Cisco VG248 Analog Phone Gateway
Software Configuration Guide
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Cisco VG248 Analog Phone Gateway Software Configuration Guide
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C O N T E N T S
About this Guide xi
Overview xi
Audience xi
Objectives xi
Organization xii
Related Documentation xii
Obtaining Documentation xiii
World Wide Web xiii
Documentation CD-ROM xiii
Ordering Documentation xiii
Documentation Feedback xiv
Obtaining Technical Assistance xiv
Cisco.com xiv
Technical Assistance Center xv
Contacting TAC by Using the Cisco TAC Website xv
Contacting TAC by Telephone xvi
CHAPTER
1
Overview 1-1
Using the VG248 with Analog Devices 1-1
Supported Analog Telephony Features 1-2
Supported Telephony Features 1-3
Understanding Voice-Mail Message Indicators 1-3
Understanding Call Control Modes 1-4
Understanding Caller ID Support 1-7
Supported Analog Devices 1-8
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Contents
Analog Phones 1-8
Speakerphones 1-8
Private Line Automatic Ringdown Phones 1-9
Fax Machines 1-9
Modems 1-9
Using the VG248 with Voice Mail Systems 1-9
Choosing a Configuration Option 1-12
Basic Configuration 1-13
Chained Configuration 1-14
Multiplexing Configuration 1-16
Supported Protocols 1-19
Data and Voice Protocols 1-20
Voice Mail Protocols 1-20
Network Management Protocols 1-20
Understanding SNMP Support 1-21
Understanding Trap Support 1-21
Understanding Supported MIBs 1-21
CHAPTER
2
Getting Started with the VG248 2-1
Accessing Configuration Options 2-1
Using the Console Port 2-1
Using Telnet 2-2
Displaying the Main Menu 2-3
Restarting the VG248 2-4
Configuring Network Settings 2-5
Setting the Host Name 2-5
Configuring Ethernet 2-6
Using DHCP 2-6
Renewing IP Address from DHCP 2-7
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Contents
Assigning a Static IP Address 2-7
Setting the IP Address 2-8
Setting the Subnet Mask 2-8
Setting the Default Router 2-9
Setting the DNS Server 2-10
Setting the Domain Name 2-10
Committing the Changes to the Static IP Settings 2-11
Enabling CDP 2-12
Setting DSCP Quality of Service Values 2-12
Configuring Passwords 2-13
Configuring the Login Password 2-13
Configuring the Enable Password 2-14
Configuring SNMP Settings 2-14
Setting Community Strings 2-14
Configuring Contact Information 2-15
Configuring Contact Name 2-15
Configuring System Name 2-16
Configuring Location 2-16
Configuring Trap Settings 2-17
Enabling Authentication Traps 2-17
Configuring Trap Receiver Stations 2-17
CHAPTER
3
Configuring the Telephony Settings on the VG248 3-1
Identifying the Cisco CallManager TFTP Server 3-2
Changing the Cisco CallManager Device Name 3-2
Assigning Feature Codes 3-3
Identifying the Country Code for VG248 3-5
Setting the Port Enable Policy 3-5
Configuring Port Parameters 3-7
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Contents
Enabling a Specific Port 3-8
Choosing the Call Control Mode 3-9
Enabling Caller ID 3-10
Choosing Message Waiting Indicator Type 3-11
Choosing a Call Supervision Method 3-12
Setting the Input Gain 3-13
Setting the Output Gain 3-13
Changing the Dialing Digit Detection 3-14
Configuring Fax and Modem Settings 3-15
Enabling Fax Relay 3-16
Enabling Error Correction Mode 3-17
Enabling Fax Relay NSF 3-17
Configuring Pass-through Mode 3-18
Configuring Pass-through Signaling 3-19
Changing the Fax Relay Payload Size 3-20
Setting Maximum Speed of Fax Relay 3-21
Modifying the Fax Relay Playout Delay 3-22
Configuring Advanced Settings 3-23
Reverting to Previous Configuration 3-23
Using SRST 3-24
Allowing Use of SRST 3-24
Choosing an SRST Provider 3-25
Preserving Calls 3-26
Setting Media Receive Timeout 3-27
Enabling Busy Tones on Off-Hook Ports 3-28
Modifying the DTMF Tone Duration 3-29
Choosing an Echo Cancelling Policy 3-30
Changing the Hook Flash Timer for Analog Phones 3-31
Changing the Hook Flash Reject Period 3-31
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CHAPTER
4
Configuring Voice Mail Settings 4-1
Connecting the Voice Mail Links to the VG248 4-2
Configuring Universal Voice Mail Settings 4-3
Choosing a Voice Mail Protocol 4-3
Identifying the Pilot Directory Number 4-4
Assigning Number of Voice Mail Ports 4-5
Identifying the First Voice Mail Port Number 4-5
Setting the Number Format 4-6
Forwarding MWIs to Cisco CallManager 4-7
Forwarding MWIs to Async 2 4-8
Identifying the Directory Number for Setting MWI on Cisco CallManager 4-9
Identifying the Directory Number for Clearing MWI on
Cisco CallManager 4-9
Modifying Serial Settings for Async Ports 4-10
Configuring SMDI Settings 4-12
Assigning the Message Desk Number 4-12
Setting Voice Mail Number Length 4-13
Allowing Voice Mail Number to be Truncated 4-14
Forwarding INV Responses to Async 1 4-14
Entering a Keep Alive Number 4-15
Configuring Disconnect Notification 4-16
Configuring Settings for MCI Voice Mail 4-16
Entering the System Address 4-17
Identifying the Tenant Number 4-17
Choosing the Entry Index 4-18
Configuring Settings for Ericsson Voice Mail 4-18
Choosing the Mode 4-18
Setting the Extension Number Length 4-19
Choosing the Port Number Length 4-19
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Contents
CHAPTER
5
Configuring VG248 Ports Using Cisco CallManager 5-1
Adding the VG248 to Cisco CallManager 5-1
Using Auto-Registration 5-2
Auto-Registering with Cisco CallManager 3.1 5-2
Auto-Registering with Cisco CallManager 3.2 or 3.3 5-3
Manually Adding the VG248 Cisco CallManager 5-5
Manually Registering with Cisco CallManager 3.1 5-5
Manually Registering with Cisco CallManager 3.2 or 3.3 5-6
Configuring Analog Phone Ports 5-7
Configuring Voice Mail Ports 5-7
Configuring the Voice Mail Hunt Group in Cisco CallManager 5-8
Setting Up the Voice Mail Hunt Group Using Cisco CallManager 3.1 5-8
Setting Up the Voice Mail Hunt Group Using Cisco CallManager 3.2 and
3.3 5-10
Configuring the MWI Port Using Cisco CallManager 5-14
Configuring the MWI Port Using Cisco CallManager 3.1 5-14
Configuring the MWI Port Using Cisco CallManager 3.2 and 3.3 5-14
Configuring Voice Mail Ports in Cisco CallManager 5-15
Configuring the VG248 5-16
Configuring Voice Mail Ports Using Cisco CallManager 3.1 5-16
Configuring Voice Mail Ports Using Cisco CallManager 3.2 or 3.3 5-17
Configuring End-User Phones 5-18
CHAPTER
6
Troubleshooting the VG248 6-1
Troubleshooting Hardware Errors 6-1
Displaying Hardware Status 6-2
Identifying Fan Faults 6-3
Identifying Power Supply Faults 6-3
Monitoring Internal Operating Temperature 6-3
Connecting Too Many Phones to the VG248 6-4
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Resolving Additional Hardware Errors 6-5
Troubleshooting Software Errors 6-5
Resolving Network and System Errors 6-6
Resolving Cisco CallManager Errors 6-10
Resolving Analog Errors 6-13
Resolving Voice Mail Errors and Warnings 6-13
Upgrading or Restoring Software Images 6-16
Suspending Voice Mail Port Activity 6-17
Upgrading the Main Image 6-18
Upgrading the Boot Loader 6-19
Resolving an Incomplete Upgrade 6-20
Restoring to Factory Defaults 6-20
Verifying Connectivity 6-20
Verifying Network Connectivity 6-21
Validating the SMDI Connection and Configuration 6-21
Displaying Status and Configuration Settings 6-22
Displaying System Status 6-22
Displaying Network Statistics 6-24
Displaying Port Status 6-24
Displaying Detailed Port Status 6-25
Displaying Port Statistics 6-27
Displaying Current Configuration 6-28
Displaying VG248 Device Configuration 6-29
Displaying Port Configuration 6-29
Displaying Software Version 6-30
Monitoring the CPU Utilization 6-31
Monitoring System Status Remotely 6-31
Working with the Event Log 6-33
Identifying a Syslog Server 6-33
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Contents
Enabling Syslog 6-33
Identifying a Specific Syslog Server 6-34
Selecting Logging Levels and Logged Ports 6-34
Displaying Recent Messages 6-35
Understanding Sub-Systems on the VG248 6-36
Resolving Incorrect Date and Time in Event Log 6-36
INDEX
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About this Guide
Overview
The Cisco VG248 Analog Phone Gateway Software Configuration Guide
provides the information you need to configure and manage the Cisco VG248
Analog Phone Gateway (VG248) on your network.
Audience
Network engineers, system administrators, and telecom engineers should review
this guide for information about configuring and using the VG248 in the network.
The tasks described in this guide are considered to be administration-level tasks.
Because of the close interaction of the VG248 with Cisco CallManager and
analog telephony systems, these tasks require that you are familiar with these
systems as well.
Objectives
This guide provides the required steps to configure and manage the VG248. You
must use this guide in conjunction with the Cisco VG248 Analog Phone Gateway
Hardware Installation Guide to get the VG248 up and running on your network.
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About this Guide
Organization
Because of the complexity of an IP telephony network, this guide does not provide
detailed information for required procedures performed on other Cisco or
third-party devices. Refer to the documentation provided with these systems for
installation and configuration instructions.
Organization
Table 1 provides an overview of the organization of this guide.
Table 1
Cisco VG248 Analog Phone Gateway Software Configuration Guide Organization
Chapter
Description
Chapter 1, “Overview”
Provides an overview of software features and
how they are implemented on the VG248.
Chapter 2, “Getting Started with the VG248”
Describes the basic network settings you need to
configure on the VG248.
Chapter 3, “Configuring the Telephony Settings
on the VG248”
Includes the procedures for configuring the
telephony settings on the VG248.
Chapter 5, “Configuring VG248 Ports Using
Cisco CallManager”
Describes necessary steps in Cisco CallManager
for adding and configuring the VG248 ports.
Chapter 4, “Configuring Voice Mail Settings”
Provides an overview of voice mail support,
configuration options, instructions for
configuring, and troubleshooting tips.
Chapter 6, “Troubleshooting the VG248”
Provides troubleshooting tips for the VG248.
Related Documentation
For information about Cisco CallManager and additional information about the
VG248, refer to these publications:
•
Cisco VG248 Analog Phone Gateway Hardware Installation Guide
•
Cisco VG248 Analog Phone Gateway Release Notes
•
Cisco CallManager Administration Guide
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About this Guide
Obtaining Documentation
Obtaining Documentation
The following sections provide sources for obtaining documentation from Cisco
Systems.
World Wide Web
You can access the most current Cisco documentation on the World Wide Web at
the following sites:
•
http://www.cisco.com
•
http://www-china.cisco.com
•
http://www-europe.cisco.com
Documentation CD-ROM
Cisco documentation and additional literature are available in a CD-ROM
package, which ships with your product. The Documentation CD-ROM is
updated monthly and may be more current than printed documentation. The
CD-ROM package is available as a single unit or as an annual subscription.
Ordering Documentation
Cisco documentation is available in the following ways:
•
Registered Cisco Direct Customers can order Cisco Product documentation
from the Networking Products MarketPlace:
http://www.cisco.com/cgi-bin/order/order_root.pl
•
Registered Cisco.com users can order the Documentation CD-ROM through
the online Subscription Store:
http://www.cisco.com/go/subscription
•
Nonregistered Cisco.com users can order documentation through a local
account representative by calling Cisco corporate headquarters (California,
USA) at 408 526-7208 or, in North America, by calling 800
553-NETS(6387).
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About this Guide
Obtaining Technical Assistance
Documentation Feedback
If you are reading Cisco product documentation on the World Wide Web, you can
submit technical comments electronically. Click Feedback in the toolbar and
select Documentation. After you complete the form, click Submit to send it to
Cisco.
You can e-mail your comments to [email protected].
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We appreciate your comments.
Obtaining Technical Assistance
Cisco provides Cisco.com as a starting point for all technical assistance.
Customers and partners can obtain documentation, troubleshooting tips, and
sample configurations from online tools. For Cisco.com registered users,
additional troubleshooting tools are available from the TAC website.
Cisco.com
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certification programs are also available.
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About this Guide
Obtaining Technical Assistance
Customers and partners can self-register on Cisco.com to obtain additional
personalized information and services. Registered users can order products, check
on the status of an order, access technical support, and view benefits specific to
their relationships with Cisco.
To access Cisco.com, go to the following website:
http://www.cisco.com
Technical Assistance Center
The Cisco TAC website is available to all customers who need technical
assistance with a Cisco product or technology that is under warranty or covered
by a maintenance contract.
Contacting TAC by Using the Cisco TAC Website
If you have a priority level 3 (P3) or priority level 4 (P4) problem, contact TAC
by going to the TAC website:
http://www.cisco.com/tac
P3 and P4 level problems are defined as follows:
•
P3—Your network performance is degraded. Network functionality is
noticeably impaired, but most business operations continue.
•
P4—You need information or assistance on Cisco product capabilities,
product installation, or basic product configuration.
In each of the above cases, use the Cisco TAC website to quickly find answers to
your questions.
To register for Cisco.com, go to the following website:
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If you cannot resolve your technical issue by using the TAC online resources,
Cisco.com registered users can open a case online by using the TAC Case Open
tool at the following website:
http://www.cisco.com/tac/caseopen
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About this Guide
Obtaining Technical Assistance
Contacting TAC by Telephone
If you have a priority level 1 (P1) or priority level 2 (P2) problem, contact TAC
by telephone and immediately open a case. To obtain a directory of toll-free
numbers for your country, go to the following website:
http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml
P1 and P2 level problems are defined as follows:
•
P1—Your production network is down, causing a critical impact to business
operations if service is not restored quickly. No workaround is available.
•
P2—Your production network is severely degraded, affecting significant
aspects of your business operations. No workaround is available.
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C H A P T E R
1
Overview
The Cisco VG248 Analog Phone Gateway (VG248) enables you to integrate
analog telephones, modems, and fax machines with the Cisco CallManager IP
telephony system. You can also integrate Cisco CallManager with analog voice
mail systems that implement any of the following voice mail protocols:
•
Simplified Message Desk Interface (SMDI)
•
NEC Message Center Interface protocol (MCI)
•
Ericsson Voice Mail Protocol
The following topics provide an overview of the supported analog devices, voice
mail systems, and the supported data and voice protocols:
•
Using the VG248 with Analog Devices, page 1-1
•
Using the VG248 with Voice Mail Systems, page 1-9
•
Supported Protocols, page 1-19
Using the VG248 with Analog Devices
The Cisco VG248 is a high-density gateway for using analog phones, fax
machines, modems, and speakerphones within the Cisco IP telephony network
(see Figure 1-1). The Cisco VG248 offers 48 fully-featured analog phone lines to
be used as extensions to the Cisco CallManager system in a compact 19-inch
rack-mount chassis.
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1-1
Chapter 1
Overview
Using the VG248 with Analog Devices
Figure 1-1
VG248 Integrated in the Cisco IP Telephony Network
PSTN
Fax
V
Gateway
Cisco CallManager
cluster
Modem
M
M
VG248
IP
IP
IP phones
Analog
phones
63891
IP
These sections provide detailed information about the analog telephony features
and devices supported by the VG248:
•
Supported Analog Telephony Features, page 1-2
•
Supported Analog Devices, page 1-8
Supported Analog Telephony Features
Review the following sections to understand which telephony features are
supported by the VG248 and to understand how they are implemented:
•
Supported Telephony Features, page 1-3
•
Understanding Voice-Mail Message Indicators, page 1-3
•
Understanding Call Control Modes, page 1-4
•
Understanding Caller ID Support, page 1-7
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Chapter 1
Overview
Using the VG248 with Analog Devices
Supported Telephony Features
The VG248 supports the following features:
•
Call Transfer (supervised and blind)
•
Conference
•
Call Waiting (with calling party ID display)
•
Hold (including switch between parties on hold)
•
Call Forward All
•
Send All Calls to Voice Mail
•
Pickup
•
Group Pickup
•
Call Voice Mail
•
Speed Dial (maximum of 9 speed dials)
•
Last Number Redial
•
Caller ID
To understand how users access and use these features, see Table 1-1.
Understanding Voice-Mail Message Indicators
The VG248 can receive message-waiting indicator (MWI) information from
Cisco CallManager and send it to analog phones. The VG248 sends MWI
messages using any of the following methods:
•
Playing stutter dial tone when a user picks up the phone
•
Illuminating the MWI lamp on the phone
•
Using caller ID mechanism to send information to the LCD screen on the
phone
You can enable or disable any of these options. See the “Choosing Message
Waiting Indicator Type” section on page 3-11 for details.
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Chapter 1
Overview
Using the VG248 with Analog Devices
Understanding Call Control Modes
The VG248 supports different call control modes, which indicate how users
access and use the supported telephony features. You can choose the call control
mode appropriate to the specific needs of your users and the abilities of your
analog devices. The supported call control modes include:
•
Standard
•
Feature
•
Basic
•
Restricted
To understand the differences among these modes, keep the following tips in
mind:
•
The four modes differ in how they support call waiting, transfer, and other
phone features.
•
Users can access features using the hook flash, 0-9, *, or # buttons, depending
on how you have configured the feature codes.
•
You cannot use a double flash hook.
See the “Assigning Feature Codes” section on page 3-3 for details about setting
the call control mode on the VG248.
Standard
Standard is the default telephony mode, and it provides standard Bellcore
features, such as used in North America.
Users use the flash button or hook flash to transfer, conference and hold calls, with
the following requirements:
•
You cannot use hook flash to activate phone features.
•
When putting calls on hold, the first call can be either incoming or outgoing.
•
When transferring a call or establishing conferences, the second call must be
outgoing.
Users also use feature codes to activate other features in standard mode. See
Table 1-1 for details about how to access the telephony features in standard mode.
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Chapter 1
Overview
Using the VG248 with Analog Devices
Feature
For simple calls, the feature mode is indistinguishable from the standard mode.
While on calls, users use the flash button or hook flash to get a second dial tone
to dial a second party. However, users then must enter feature codes to transfer the
call or establish a conference.
When using feature mode with two calls established, the hook flash cycles around
four states:
1.
First call connected
2.
Feature code tone
3.
Second call connected
4.
Feature code tone
These different states enable you to keep both calls active and switch between
them. Thus, unlike Standard mode you can keep both calls active for as long as
you want and freely switch between them.
To transfer or conference, you need to enter the relevant feature code at one of the
feature tones (which are similar to dial tones except you can only enter feature
codes rather than being able to dial a directory number).
See Table 1-1 for details about how to access the telephony features in feature
mode.
Basic
This mode provides a simple phone interface but does not provide call transfer or
conference features. Basic mode might work best for fax machines or modems.
See Table 1-1 for details about how to access the telephony features in basic
mode.
Restricted
This is the most limited of the available call modes. Restricted mode is most
appropriate for situations in which a billing system is used that begins charging
when calls connect. Therefore, call waiting and other features requiring hook
flash are not supported. See Table 1-1 for details about how to access the
telephony features in restricted mode.
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Chapter 1
Overview
Using the VG248 with Analog Devices
Table 1-1
Overview of Default Feature Access in Call Control Modes
Restricted
Basic
Standard
Feature
SpeedDial
SpeedDial
SpeedDial
SpeedDial
*1
*2
*1
*2
*1
*2
*1
*2
*3
*4
*3
*4
*3
*4
*3
*4
*5
*6
*5
*6
*5
*6
*5
*6
*7
*8
*7
*8
*7
*8
*7
*8
*9
*9
*9
*9
Last Number Redial
Last Number Redial
Last Number Redial
Last Number Redial
*#
*#
*#
*#
Pickup
Pickup
Pickup
Pickup
**3
**3
**3
**3
Group Pickup
Group Pickup
Group Pickup
Group Pickup
**4
**4
**4
**4
Call Voice Mail
Call Voice Mail
Call Voice Mail
*0
*0
*0
Forward All to
Voicemail1
**0
Forward All to
Voicemail1
**0
Forward All to Voicemail1
**0
Forward All1
Forward
All1
Forward All1
**1 number
**1 number
**1 number
Disable Forward All
Disable Forward All
Disable Forward All
**2
**2
**2
Call Waiting
Call Waiting
Call Waiting
Hook flash to answer
and switch between
calls.
Hook flash to answer and Hook flash to answer
switch between calls.
and switch between
calls.
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Chapter 1
Overview
Using the VG248 with Analog Devices
Table 1-1
Overview of Default Feature Access in Call Control Modes (continued)
Restricted
Basic
Standard
Feature
Blind Transfer
Blind Transfer
Call 1, hook flash, call 2, Call 1, hook flash, #2,
hang up.
call 2, hang up
Supervised Transfer
Supervised Transfer
Call 1, hook flash, call 2, Call 1, hook flash, call 2,
wait for call 2 to be
wait for call 2 to be
answered, hang up
answered, hook flash, #2
Conference
Conference
Call 1, hook flash, call 2, Call 1, hook flash, call 2,
hook flash
hook flash, #3
Hang up Last Call
Call 1, hook flash, call 2,
hook flash, #1
Hold
Call 1, hook flash, call 2;
hook flash to toggle
1. When forward all is activated, users hear a distinctive dial tone to indicate that all incoming calls are currently being
forwarded to a different directory number.
Understanding Caller ID Support
If you have activated caller ID on Cisco CallManager, the VG248 can collect that
information and pass it on to analog phones. You can disable caller ID on a per
port basis. You can also enable caller ID using different methods depending on the
type of phone in use. This enables you to support caller ID on some analog phones
and not on others (see the “Enabling Caller ID” section on page 3-10 for details).
The VG248 supports the following caller ID standards:
•
Bellcore GR-30-CORE—North America
•
ETS 300 648 and ETS 300 659-1—Europe (excluding the United Kingdom)
•
British Telecom SIN227 and SIN 242—United Kingdom
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When a call arrives, the VG248 sends the following information:
•
Time and date information
•
Calling number up to 18 digits when available, otherwise the reason why
number is unavailable
•
Calling name up to 20 characters when available
Supported Analog Devices
The VG248 has a maximum ringer equivalency number (REN) load of three (3).
Because some devices might have a REN load greater than one (1), you cannot
necessarily connect three devices to the chain.
You should use analog devices designed to work in the country in which you are
using the VG248. For example, if you are using the VG248 in the United
Kingdom, you should use analog devices designed for use in that country.
These sections provide an overview of the types of analog devices supported by
the VG248:
•
Analog Phones, page 1-8
•
Speakerphones, page 1-8
•
Private Line Automatic Ringdown Phones, page 1-9
•
Fax Machines, page 1-9
•
Modems, page 1-9
Analog Phones
The VG248 supports analog phones and the standard telephony features available
on them.
Speakerphones
The VG248 performs line echo cancellation, but it does not perform acoustic echo
cancellation. Speakerphones with built-in echo cancellation such as the
Polycom-brand phones should work fine. However the voice quality might be
unsatisfactory when using a speakerphone that does not perform acoustic echo
cancellation itself.
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Private Line Automatic Ringdown Phones
A telephone configured as a Private Line Automatic Ringdown (PLAR) telephone
dials a pre-configured number when it goes off-hook. You cannot use PLAR
phones to dial any other numbers. Telephones in hotel lobbies and airports are
often configured in this way.
Cisco CallManager release 3.0 and later can be configured to support the PLAR
phone feature for an IP phone or for an analog telephone connected to the VG248.
Fax Machines
The VG248 supports fax transmissions (or calls) over TCP/IP using either fax
pass-through and Cisco fax relay modes. Fax pass-through sends the signals in an
audio form similar to that used for modems, except echo cancellers are not
disabled (see the “Modems” section on page 1-9 for details). Cisco fax relay
encodes the information in a different format which is converted back to analog
fax signals by the other party in the call.
To use Cisco fax relay, the terminating gateway must also support Cisco fax relay.
If necessary, you can disable Cisco fax relay (see the “Configuring Fax and
Modem Settings” section on page 3-15 for details).
Modems
The VG248 supports modems, which connect using pass-through mode. Using
pass-through mode, modem traffic is transported over a channel similar to that
used for a voice call. The modem pass-through channel uses G.711 and has the
VG248 echo canceller and high-pass filter disabled to prevent interference with
the tone-based signalling used by modems (see the “Configuring Fax and Modem
Settings” section on page 3-15 for details).
Using the VG248 with Voice Mail Systems
Simplified Message Desk Interface (SMDI) is a common method used by phone
systems to provide voice mail systems with the information needed to
intelligently process incoming calls. It is an industry-standard signaling protocol
that supplies calling and called party identification and sets and clears Message
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Waiting Indicators (MWIs) through an RS-232 serial connection. MCI and
Ericsson voice mail protocols are proprietary voice mail signalling protocols that
function similarly to SMDI.
Using the VG248, you can integrate your existing analog voice mail systems
(which are compatible with SMDI, MCI, or Ericsson voice mail protocols) and
legacy PBX systems with Cisco CallManager.
The VG248 generates call information for all calls coming into any of the voice
mail-enabled ports. The VG248 can also send and receive voice mail messages to
and from other voice mail devices, such as other VG248 devices, a legacy PBX,
or the legacy voice mail system.
The VG248 provides advantages to other methods used for integrating
Cisco CallManager with analog voice mail systems, including:
•
Reliability for voice mail links using Cisco CallManager failover (see
Figure 1-2).
•
Scalability by linking VG248 devices (see Figure 1-3).
•
Multiple voice mail systems can be used on a single cluster, by using one
VG248 per voice mail system (see Figure 1-3).
•
A single voice mail system to be used by multiple clusters, by using one
VG248 per cluster (see Figure 1-4).
•
A single voice mail system to be shared between Cisco CallManager and a
legacy PBX (see Figure 1-5).
Table 1-2 provides an overview of the tasks required to implement this
integration.
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Table 1-2
Voice Mail Configuration Tasks
Task
Description
For More Information
Decide on an
integration method
Choose one of the following methods:
See the “Choosing a
Configuration
• Basic—connect a voice mail system to
Option” section on
Cisco CallManager system via the VG248 (48 port
page 1-12.
maximum)
•
Chained—connect a voice mail system to
Cisco CallManager system via multiple VG248
devices (more than 48 ports)
•
Multiplexing—connect a voice mail system to
multiple Cisco CallManager clusters or legacy
PBX systems
Connect the voice
mail links to the
VG248
Use Async 1 to connect to the voice mail system (any
configuration) or voice mail source (chained or
multiplexing configuration). Use Async 2 to connect
VG248 devices together or to a legacy PBX system.
See the “Connecting
the Voice Mail Links
to the VG248” section
on page 4-2.
Update service
parameters in
Cisco CallManager.
You should verify that the voice mail service
parameters are properly configured to support the
voice mail system.
See the “Configuring
the Voice Mail Hunt
Group in
Cisco CallManager”
section on page 5-8.
Add the MWI port to
Cisco CallManager.
You must add a special port to Cisco CallManager that See the “Configuring
is used to set and clear MWI commands.
the MWI Port Using
Cisco CallManager”
section on page 5-14.
Add the voice mail
ports to
Cisco CallManager.
You must add and configure the VG248 ports used for See the “Configuring
voice mail to the Cisco CallManager database.
Voice Mail Ports in
Cisco CallManager”
section on page 5-15.
Update end-user
phones.
You should update the voice mail settings for the
end-user phones that are using the analog voice mail
system.
See the “Configuring
End-User Phones”
section on page 5-18.
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Table 1-2
Voice Mail Configuration Tasks (continued)
Task
Description
For More Information
Configure the local
You must configure the local voice mail settings on the See Chapter 4,
voice mail settings on VG248. Some of these settings must match settings on “Configuring Voice
the VG248.
the voice mail system or Cisco CallManager.
Mail Settings.”.
Verify the status of
the voice mail
configuration.
You can check the status of the voice mail connections See the “Validating
to help resolve any problems.
the SMDI Connection
and Configuration”
section on page 6-21.
Choosing a Configuration Option
You can use the VG248 to integrate analog voice mail systems (compatible with
SMDI, MCI, or Ericsson voice mail protocols) with Cisco CallManager in
different configurations depending on your needs:
•
Basic—if you need 48 or fewer voice mail ports and do not need to integrate
with multiple Cisco CallManager clusters or a legacy PBX system.
•
Chained—if you need more than 48 voice mail ports; can be used with the
multiplexing configuration.
•
Multiplexing—if you need to integrate with multiple Cisco CallManager
clusters or with a legacy PBX system.
These sections provide additional information about these methods:
•
Basic Configuration, page 1-13
•
Chained Configuration, page 1-14
•
Multiplexing Configuration, page 1-16
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Basic Configuration
In the basic configuration (see Figure 1-2), you can use a single VG248 device to
connect up to 48 voice channels to a voice mail system. This configuration
enables you to use your existing voice mail system and integrate it with
Cisco CallManager using the appropriate voice mail protocol.
When using the VG248 in this configuration, you have a more flexible failover
system than when using a single Cisco CallManager server for voice mail
integration. When connecting the voice mail link directly to Cisco CallManager,
if that Cisco CallManager system fails, the voice mail link goes down. The link
cannot automatically be switched or transferred to another Cisco CallManager
system. However, if you are using the VG248 and the primary Cisco CallManager
system fails, the VG248 automatically switches to its backup Cisco CallManager
system, and the voice mail link remains.
Configuration Tips
When configuring the VG248 using the basic configuration, refer to these tips.
Note, however, that this is not a complete list of the items you must configure;
these are tips specific to the basic configuration. Refer to the Chapter 4,
“Configuring Voice Mail Settings” for a description of all voice mail
configuration tasks.
•
The VG248 should be set to forward MWI commands to Cisco CallManager.
See the “Forwarding MWIs to Cisco CallManager” section on page 4-7 for
details.
•
If the VG248 is set to forward MWI commands to Cisco CallManager, you
must set the MWI directory numbers in Cisco CallManager. See the
“Identifying the Directory Number for Setting MWI on Cisco CallManager”
section on page 4-9 and “Identifying the Directory Number for Clearing MWI
on Cisco CallManager” section on page 4-9.
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Figure 1-2
Basic Configuration of VG248 Voice Mail Integration
Legacy
voice mail
Voice Mail
Protocol
Analog
VGA248
Cisco CallManager
M
M
IP
IP
79997
IP
Chained Configuration
Each VG248 system enables you to use up to 48 ports for voice mail access. If
you need more than 48 ports, you can use the chained configuration. The chained
configuration (see Figure 1-3) enables you to connect multiple VG248 devices
together, expanding the number of voice ports available for your voice mail
integration.The voice mail information is shared and passed between the VG248
devices via the Async ports (see “Connecting the Voice Mail Links to the VG248”
section on page 4-2 for details about the Async ports).
Configuration Tips
The tips that follow are not a complete list of the items you must configure; these
are tips specific to the chained configuration. Refer to the Chapter 4,
“Configuring Voice Mail Settings” for a description of all voice mail
configuration tasks.
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When using multiple VG248 systems, refer to these tips:
•
All VG248 systems connected together must be connected to a single voice
mail system.
•
Verify that you identify the first voice mail port correctly on each VG248
device. See the “Identifying the First Voice Mail Port Number” section on
page 4-5 for details.
•
The first VG248 per Cisco CallManager cluster should be set to forward
MWI commands to Cisco CallManager. See the “Forwarding MWIs to
Cisco CallManager” section on page 4-7 for details.
•
You do not need to set the VG248 systems to forward MWI commands along
the Async 2 connection unless a second cluster or a legacy PBX is attached
to the end of the voice mail chain. For example, if you are using the chained
configuration in conjunction with the multiplexing configuration. See the
“Forwarding MWIs to Async 2” section on page 4-8.
•
If a VG248 device is configured to forward MWI commands to
Cisco CallManager, you must identify the MWI directory numbers used in
Cisco CallManager. See the “Identifying the Directory Number for Setting
MWI on Cisco CallManager” section on page 4-9 and “Identifying the
Directory Number for Clearing MWI on Cisco CallManager” section on
page 4-9.
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Figure 1-3
Chained Configuration of VG248 Voice Mail Integration
Legacy
voice mail
Analog
VG248
Voice Mail
Protocol
Voice Mail
Protocol
Voice Mail
Protocol
Voice mail
information passed
between VG248
devices
Cisco CallManager
M
M
IP
IP
79998
IP
Multiplexing Configuration
This method enables you to share a single voice mail system with multiple
Cisco CallManager systems or another PBX system. Using the multiplexing
configuration, you can integrate analog voice mail systems with multiple PBX
systems, including:
•
Multiple Cisco CallManager clusters (see Figure 1-4)
•
Legacy PBX system and Cisco CallManager (see Figure 1-5)
Configuration Tips
The tips that follow are not a complete list of the items you must configure; these
are tips specific to the multiplexing configuration. Refer to Chapter 4,
“Configuring Voice Mail Settings” for a description of all voice mail
configuration tasks.
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When integrating voice mail links from more than one PBX system, refer to these
tips:
•
If connecting to a legacy PBX, all VG248 devices should be set to forward
MWIs to Async 2. See the “Forwarding MWIs to Async 2” section on
page 4-8.
•
At least one VG248 per cluster should be set to forward MWI commands to
Cisco CallManager. See the “Forwarding MWIs to Cisco CallManager”
section on page 4-7.
•
If you are not using a legacy PBX, set the VG248 systems to forward MWI
commands along the Async 2 connection. You do not need to set this on the
VG248 system furthest away on the voice mail chain from the voice mail
system. That VG248 device should be configured to forward MWI commands
to Cisco CallManager. See the “Forwarding MWIs to Async 2” section on
page 4-8.
•
If the VG248 is set to forward MWI commands to Cisco CallManager, you
must set the MWI directory numbers in Cisco CallManager. See the
“Identifying the Directory Number for Setting MWI on Cisco CallManager”
section on page 4-9 and “Identifying the Directory Number for Clearing MWI
on Cisco CallManager” section on page 4-9.
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Figure 1-4
Multiplexing Configuration of VG248 Integration with Multiple Cisco CallManager
Clusters
Legacy
voice mail
Voice Mail
Protocol
Voice Mail
Protocol passed
between VG248
devices
Analog
VG248-1
Voice Mail
Protocol
VG248-2
Cisco CallManager
Cluster 2
M
M
IP
Network
IP
IP
M
M
Cisco CallManager
Cluster 1
IP
79999
IP
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Supported Protocols
Figure 1-5
Multiplexing Configuration of VG248 Integration with
Cisco CallManager and Legacy PBX
Legacy
voice mail
Analog
Analog
Voice Mail
Protocol
VG248
Voice Mail
Protocol
Cisco CallManager
M
M
V
Gateway
IP
IP
Legacy PBX
80000
IP
Supported Protocols
The VG248 supports several industry-standard and Cisco networking protocols
required for voice communication over an IP network. Additionally, the VG248
supports protocols required for remote network management.
These sections provide an overview of the protocols supported by the VG248:
•
Data and Voice Protocols, page 1-20
•
Voice Mail Protocols, page 1-20
•
Network Management Protocols, page 1-20
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Supported Protocols
Data and Voice Protocols
The VG248 supports the following data and voice communication protocols.
•
Internet Protocol (IP)—addresses and sends packets across the network.
•
Internet Group Management Protocol (IGMP)—used to report multicast
group memberships
•
Trivial File Transfer Protocol (TFTP)—allows you to transfer files over the
network.
•
HyperText Transfer Protocol (HTTP)—defines how messages are formatted
and transmitted, and what actions Web servers and browsers should take in
response to various commands.
•
File Transfer Protocol (FTP)—allows you to transfer files over the network.
•
Dynamic Host Configuration Protocol (DHCP)—dynamically allocates and
assigns an IP address to network devices.
•
Real-Time Transport Protocol (RTP)—enables transporting of real-time data,
such as interactive voice and video over data networks.
•
Skinny Client Control Protocol (SCCP)—enables communication between
the VG248 and Cisco CallManager.
Voice Mail Protocols
The VG248 supports the following analog voice mail protocols:
•
Simplified Message Desk Interface (SMDI)—an industry-standard voice mail
protocol used by the majority of analog voice mail systems for call integration
•
Message Center Interface (MCI)—a proprietary voice mail protocol used by
NEC NEAX systems
•
Ericsson voice mail protocol—a voice mail protocol used by equipment
manufactured by Ericsson
Network Management Protocols
The VG248 supports Simple Network Management Protocol (SNMP) and
implements several industry-standard Management Information Bases (MIBs).
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Supported Protocols
Understanding SNMP Support
The VG248 supports SNMP versions 1 and 2, enabling you to perform the
following commands:
•
Get—Retrieve a specific node’s value.
•
GetNext—Retrieve the first value present in the ordered tree whose node
succeeds the one specified.
•
GetBulk—Retrieve bounded number of values whose nodes succeed, in the
numerical ordering, the one specified. GetBulk is available only in SNMP v2.
•
Set—Set a specific value.
Understanding Trap Support
The VG248 generates the following general traps, as defined in RFC 1157:
•
Cold start—when the VG248 starts up and obtains an IP address
•
Warm start—when the VG248 changes IP addresses
•
Authentication failure—when an invalid community string is used
You must have set at least one network management station in order for the
VG248 to generate traps. See the “Configuring Trap Settings” section on
page 2-17 for details.
Understanding Supported MIBs
The VG248 supports the following MIBs.
RFC 1213
RFC 1213 is the basic MIB 2 specification which indicates the state of embedded
interfaces and statistics for network protocols.
The VG248 supports RFC 1213 with the following caveats:
•
ifAdminStatus for the Ethernet interface cannot be written, and it is fixed at
“up”.
•
ifSpecific for all interfaces returns as “0, 0”.
•
atTable cannot be written.
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Supported Protocols
•
No “ip***” values can be written.
•
You cannot write to “tcpConnState” for an active TCP connection.
•
The VG248 does not implement the External Gateway Protocol (EGP).
Interface MIB
This MIB is defined in RFC 1573 and extends the range of information available
about a device's interfaces from that provided by the ifTable in RFC 1213. The
VG248 implements this MIB for its Ethernet interface and the 48 FXS interfaces.
However, the octet or packet count values are not available for the FXS interfaces
because they are not applicable to these interface types.
RMON
The VG248 implements the Ethernet Statistics group in Remote Monitoring
(RMON), with the exception of “EtherStatsStatus.” This is fixed at “valid” and
cannot be written.
Cisco CDP MIB
Cisco Discovery Protocol (CDP) is a method that Cisco devices use to advertise
their presence and to discover information about other nearby devices. The
VG248 supports CDP and implements this MIB. You can enable or disable CDP
on the VG248. See the “Enabling CDP” section on page 2-12 for details.
Cisco Process MIB
The Cisco Process MIB describes the processes currently running on the device.
However, because the VG248 runs threads, rather than processes, the MIB is
implemented with the following caveats:
•
The amount of memory allocated is not recorded on a per-thread basis.
Therefore, cpmProcExtMemAllocated and cpmProcExtMemFreed are
returned as 0.
•
All threads run at the same priority. Therefore, every process
cpmProcExtPriority are returned as “normal.”
•
It is not possible to change a process’s priority, so attempts to write
“cpmProcExtPriority” are unsuccessful.
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Supported Protocols
Cisco Memory Pool MIB
This MIB allows detailed information to be retrieved for all memory pools present
within a Cisco device. The VG248 implements this MIB, but because all dynamic
memory management uses a single heap, the resulting table has one row, which is
returned as “Processor”.
Cisco EnvMon MIB
“EnvMon” refers to the on-board environmental monitor on the VG248 that
monitors the internal voltage, power supply, temperature, and fan settings.
The VG248 routinely measures these values recording the information in the rows
within the different tables:
•
ciscoEnvMonVoltageStatusTable—records voltage and power supply
readings
•
ciscoEnvMonFanStatusTable—records fan status readings
•
ciscoEnvMonTemperatureStatusTable—records temperature settings
You can use this MIB to access these recorded values. Also, if the VG248 detects
readings beyond the acceptable limits, the device generates warning messages.
See the “Troubleshooting Hardware Errors” section on page 6-1 for details.
Cisco Voice Interface MIB
This Cisco proprietary MIB (CISCO-VOICE-IF-MIB.my) allows access to
voice interface parameters such as gain values and echo cancellation status. The
VG248 implementation of this MIB provides read access only. You can configure
the gain values using the VG248 interface (see the “Setting the Output Gain”
section on page 3-13 and the “Setting the Input Gain” section on page 3-13 for
details).
Cisco Analog Voice Interface MIB
This Cisco proprietary MIB (CISCO-VOICE-ANALOG-IF-MIB.my) allows
access to interface parameters related to the analog ports. These parameters
include hardware issues such as electrical impedance value and ring frequency
and user factors such as whether an attached handset is currently on- or off-hook.
The electrical impedance value and ring frequency is determined by the country
code you set in the VG248 (see “Identifying the Country Code for VG248”
section on page 3-5 for details). You can modify the hook-flash timer using the
VG248 interface (see “Changing the Hook Flash Timer for Analog Phones”
section on page 3-31).
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Supported Protocols
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2
Getting Started with the VG248
Before you can configure the telephony features on the VG248 to interact with the
analog phones, you must first configure the basic network, SNMP, and password
settings. These settings enable the VG248 to connect to the IP network and help
you manage the device.
These sections provide details about configuring these settings on the VG248:
•
Accessing Configuration Options, page 2-1
•
Restarting the VG248, page 2-4
•
Configuring Network Settings, page 2-5
•
Configuring Passwords, page 2-13
•
Configuring SNMP Settings, page 2-14
Accessing Configuration Options
You can access the VG248 configuration options, after the device has started up,
using a console terminal connected to the RJ-45 console port or through a Telnet
session.
Using the Console Port
You might want to use the console port to connect to the VG248 when you initially
install the device. This enables you to observe the initial startup procedure and
manually assign an IP address and host name if you are not using DHCP.
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Accessing Configuration Options
Procedure
To access the VG248 through the console RJ-45 port, perform these steps.
Task
Description
Step 1
Connect the console terminal to
the console port.
See the Cisco VG248 Analog Phone Gateway Hardware
Installation Guide.
Step 2
At the prompt, enter the password. <password>
The VG248 does not have a
default password. If no password
has been configured, the main
menu displays.
Step 3
Choose the necessary options to
complete your desired tasks.
Choose the desired option from the menus.
Step 4
When finished, exit the session.
—
Using Telnet
To access the VG248 through a Telnet session, you must know its IP address or
host name. By default, the device uses DHCP. If you want to assign a specific IP
address or host name, you must first configure the network settings using the
console port before connecting through a Telnet session.
Procedure
To access the VG248 from a remote host with Telnet, perform these steps:
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Accessing Configuration Options
Task
Command
Step 1
telnet hostname | ip_addr
From the remote host, enter the
telnet command and the host name
or IP address of the VG248 that
you want to access.
Step 2
At the prompt, enter the password, <password>
if you have configured one.
The VG248 does not have a
default password. If no password
has been configured, the main
menu displays.
Step 3
Choose the necessary options to
complete your desired tasks.
Choose the desired option from the menus.
Step 4
When finished, exit the Telnet
session
—
Displaying the Main Menu
After connecting to the VG248 through the console port or a Telnet session, the
main menu appears (see Figure 2-1). Follow these guidelines to navigate the
menus:
•
Use the arrow keys or numeric keypad to navigate the available options.
•
Press Enter to choose an option.
•
Press Esc to return to the previous menu.
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Restarting the VG248
VG248 Main Menu
63311
Figure 2-1
Restarting the VG248
Although not required for configuration, you should restart the VG248 after
upgrading or downgrading the software.
Procedure
To restart the VG248, perform these steps:
Step 1
From the main menu, choose Configure.
Step 2
Choose Restart.
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Configuring Network Settings
Configuring Network Settings
You must configure the network settings on the VG248 to connect it to the IP
network.
These sections describe the configurable network settings on the VG248:
•
Setting the Host Name, page 2-5
•
Configuring Ethernet, page 2-6
•
Using DHCP, page 2-6
•
Renewing IP Address from DHCP, page 2-7
•
Assigning a Static IP Address, page 2-7
•
Enabling CDP, page 2-12
•
Setting DSCP Quality of Service Values, page 2-12
Setting the Host Name
The host name identifies each VG248 on your TCP/IP network, enabling you to
access the device using this name rather than the IP address. By default, this value
is set to be the same as the device name registered in the Cisco CallManager
database. This device name is a unique character string generated based on the
MAC address for the VG248 (see the “Adding the VG248 to Cisco CallManager”
section on page 5-1.
Procedure
To set the host name, perform these steps:
Step 1
From the main menu, choose Configure.
Step 2
Choose Network interface.
Step 3
Choose Host name.
Step 4
Enter the host name to be used by the VG248.
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Configuring Network Settings
Configuring Ethernet
The VG248 fully supports 10/100 Mbps half- and full-duplex Ethernet. If you
choose auto-negotiation, the VG248 automatically negotiates the speed and
duplex mode with the switch to which it is attached; this is the default setting. The
switch port used by the VG248 should also be set to auto-negotiation.
Procedure
Follow these steps to configure the VG248 as your network requires:
Step 1
From the main menu, choose Configure.
Step 2
Choose Network interface.
Step 3
Choose Ethernet.
Step 4
Choose the option that matches the setting on the switch to which the VG248 is
connected:
•
auto-negotiation
•
100Mb/s half duplex
•
100Mb/s full duplex
•
10Mb/s half duplex
•
10Mb/s full duplex
Using DHCP
If you are using Dynamic Host Configuration Protocol (DHCP) in your network,
the VG248 automatically obtains an IP address when you connect it to the
network. Although the VG248 uses DHCP by default, you can disable DHCP and
manually assign an IP address to the VG248.
Before You Begin
If you do not use DHCP, you must enter the additional network settings. See the
“Assigning a Static IP Address” section on page 2-7 for details:
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Configuring Network Settings
Procedure
To use DHCP, perform these steps:
Step 1
From the main menu, choose Configure.
Step 2
Choose Network interface.
Step 3
Choose Use DHCP.
Step 4
Press Enter to toggle between yes (use DHCP) and no (do not use DHCP).
Renewing IP Address from DHCP
You might need to renew the IP address automatically assigned to the VG248. For
example, if you have changed the physical location of the VG248 from one subnet
to another or if you need assistance troubleshooting a connectivity problem.
Procedure
To renew an IP address assigned by DHCP, follow these steps:
Step 1
From the main menu, choose Configure.
Step 2
Choose Network interface.
Step 3
Choose Renew DHCP.
Assigning a Static IP Address
Rather than using DHCP to obtain an IP address, you can assign a static IP address
to the VG248. You can also change any of these settings even if you are using
DHCP in your network. To assign a static IP address, you must manually assign
several network settings described in these sections:
•
Setting the IP Address, page 2-8
•
Setting the Subnet Mask, page 2-8
•
Setting the Default Router, page 2-9
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Configuring Network Settings
•
Setting the DNS Server, page 2-10
•
Setting the Domain Name, page 2-10
Setting the IP Address
The IP address identifies each VG248 on your TCP/IP network. You must enter
the IP address if you are not using DHCP. The VG248 automatically obtains an IP
address if you are using DHCP.
Before You Begin
An asterisk (*) appears next to any setting that you have changed until you commit
the changes. See the“Committing the Changes to the Static IP Settings” section
on page 2-11 for details.
Procedure
To assign an IP address, perform these steps:
Step 1
From the main menu, choose Configure.
Step 2
Choose Network interface.
Step 3
Choose Static IP settings.
Step 4
Choose IP address.
Step 5
Enter the IP address to be used by the VG248.
Setting the Subnet Mask
You must enter the subnet mask if you are not using DHCP. The VG248
automatically obtains a subnet mask if you are using DHCP.
Before You Begin
An asterisk (*) appears next to any setting that you have changed until you commit
the changes. See the“Committing the Changes to the Static IP Settings” section
on page 2-11 for details.
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Configuring Network Settings
Procedure
To set the subnet mask, perform these steps:
Step 1
From the main menu, choose Configure.
Step 2
Choose Network interface.
Step 3
Choose Static IP settings.
Step 4
Choose Subnet mask.
Step 5
Enter the subnet mask.
Setting the Default Router
You must enter the default router if you are not using DHCP. The VG248
automatically obtains a default router if you are using DHCP.
Before You Begin
An asterisk (*) appears next to any setting that you have changed until you commit
the changes. See the“Committing the Changes to the Static IP Settings” section
on page 2-11 for details.
Procedure
To set the default router, perform these steps:
Step 1
From the main menu, choose Configure.
Step 2
Choose Network interface.
Step 3
Choose Static IP settings.
Step 4
Choose Default router.
Step 5
Enter the IP address of the default router.
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Configuring Network Settings
Setting the DNS Server
Domain Name System (DNS) allows users to specify remote computers by host
names. The VG248 uses DNS to resolve the host name of TFTP servers and
Cisco CallManager systems when the system is configured to use names rather
than IP addresses.
Before You Begin
An asterisk (*) appears next to any setting that you have changed until you commit
the changes. See the“Committing the Changes to the Static IP Settings” section
on page 2-11 for details.
Procedure
To set the DNS server, perform these steps:
Step 1
From the main menu, choose Configure.
Step 2
Choose Network interface.
Step 3
Choose Static IP settings.
Step 4
Choose DNS server.
Step 5
Enter the IP address of the DNS server.
Tips
You can enter a secondary DNS server by choosing Network
interface > DNS server 2 and entering the IP address.
Setting the Domain Name
The domain name is the name of the Domain Name System (DNS) domain in
which the VG248 is located.
Before You Begin
An asterisk (*) appears next to any setting that you have changed until you commit
the changes. See the“Committing the Changes to the Static IP Settings” section
on page 2-11 for details.
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Configuring Network Settings
Procedure
To set the domain name, perform these steps:
Step 1
From the main menu, choose Configure.
Step 2
Choose Network interface.
Step 3
Choose Static IP settings.
Step 4
Choose Domain name.
Step 5
Enter the domain name.
Committing the Changes to the Static IP Settings
After making any changes to the static IP settings, you must commit the changes
to apply them. Keep in mind that depending on the changes made, you might lose
connectivity to the IP network.
Tip
If you choose not to accept these settings, choose Configure > Network interface
> Static IP settings > Reset values to return to the previous settings.
Procedure
Follow these steps to accept the changes you’ve made:
Step 1
From the main menu, choose Configure.
Step 2
Choose Network interface.
Step 3
Choose Static IP settings.
Step 4
Choose Commit Changes.
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Configuring Network Settings
Enabling CDP
The VG248 can advertise itself to other network devices using Cisco Discovery
Protocol (CDP). Many network management applications require that CDP is
enabled.
Procedure
To enable CDP, perform these steps:
Step 1
From the main menu, choose Configure.
Step 2
Choose Network interface.
Step 3
Choose CDP.
Step 4
Press Enter to toggle between enabled and disabled.
Setting DSCP Quality of Service Values
Differentiated Services Code Point (DSCP) is an IETF standard that uses six bits in
the IPv4 header's Type of Service (ToS) field to specify the class of service for each
packet. You can modify the assigned DSCP Quality of Service (QoS) value for certain
types of traffic. This enables you to give priority to media traffic over control traffic.
Procedure
To enable modify the DSCP QoS values, perform these steps:
Step 1
From the main menu, choose Configure.
Step 2
Choose Network interface.
Step 3
Choose Set DSCP QoS values.
Step 4
Choose one of the following options:
•
Media traffic—RTP packets carrying voice, fax, and modem calls
•
Control traffic—SCCP data packets carrying telephony control data
•
All other traffic—such as FTP, HTTP, SNMP, and so on
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Configuring Passwords
Step 5
Enter the new value for Media traffic or Control traffic from 0 to 63, using
decimal format.
By default, Media traffic is set to 46, and Control traffic is set to 26. You cannot
change the value for All other traffic; it is set to 0.
Configuring Passwords
The VG248 ships without a set or enabled password. You should enable
passwords to prevent unauthorized access to and control of the VG248. The
VG248 does not support or use user names.
Once you set a password, however, the VG248 requires that you use it, whether
you are accessing the device using the console port, telnet, HTTP, or FTP. When
using the HTTP, you are required to enter the login password if one is set; you
cannot modify any settings when accessing the VG248 using HTTP. When
accessing the VG248 using FTP, the FTP server adopts the highest level of
security currently set. For example, if you have set both a login and enable
password, you must use the enable password to use FTP.
Caution
By default, the VG248 does not have an assigned password. To avoid
unauthorized access, assign passwords to this device.
Configuring the Login Password
The login password enables you or other users to view the current status of the
VG248.
Procedure
To configure the login password, perform these steps:
Step 1
From the main menu, choose Configure.
Step 2
Choose Passwords.
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Configuring SNMP Settings
Step 3
Choose Login password.
Step 4
Enter the new password.
Configuring the Enable Password
The enable password allows you to view current settings and make changes to the
VG248. Once set, you must use the enable password to make changes to the
VG248.
Procedure
To configure the enable password, perform these steps:
Step 1
From the main menu, choose Configure.
Step 2
Choose Passwords.
Step 3
Choose Enable password.
Step 4
Enter the new password.
Configuring SNMP Settings
The VG248 supports Simple Network Management Protocol (SNMP) by
supporting standard MIBs. Modify the SNMP settings as appropriate for your
network management needs. You need to configure the SNMP settings if you want
to manage the VG248 remotely.
Setting Community Strings
The community string settings enable network management systems to access the
VG248 for remote management.
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Configuring SNMP Settings
You can configure a read-only password, which restricts access to the device,
allowing users to view information but not to make changes. You can also
configure a read-write community string, which allows users to make changes to
the device remotely.
By default, the read-only community string is set to public, which provides
read-only access. If you do not set these community strings on the VG248, you
cannot manage the device remotely using the Simple Network Management
Protocol (SNMP).
Procedure
To set the community strings, perform these steps:
Step 1
From the main menu, choose Configure.
Step 2
Choose SNMP.
Step 3
To set the read-only community string, choose Read-only community string.
Step 4
To set the read-write community string, choose Read-write community string.
Step 5
Enter the community string value.
Configuring Contact Information
You can enter the contact name of the person responsible for the VG248 and the
location of the VG248 on your campus.
Configuring Contact Name
The contact name on the VG248 corresponds to the sysContact variable defined
in RFC 1213.
Procedure
To add a contact name indicating the person responsible for the VG248, perform
these steps:
Step 1
From the main menu, choose Configure.
Step 2
Choose SNMP.
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Configuring SNMP Settings
Step 3
Choose Contact name.
Step 4
Enter the name of the person responsible for the VG248.
Configuring System Name
The system name on the VG248 corresponds to the sysName variable defined in
RFC 1213.
Procedure
To specify the system name of the VG248 to the network management system
perform these steps:
Step 1
From the main menu, choose Configure.
Step 2
Choose SNMP.
Step 3
Choose System name.
Step 4
Enter the system name of the VG248.
Configuring Location
The location on the VG248 corresponds to the sysLocation variable defined in
RFC 1213.
Procedure
To add the location of the VG248 in your network or on your site, perform these
steps:
Step 1
From the main menu, choose Configure.
Step 2
Choose SNMP.
Step 3
Choose Location.
Step 4
Enter the location of the VG248.
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Configuring SNMP Settings
Configuring Trap Settings
You can configure the VG248 to notify up to four network management systems
when certain significant system events occur. You can also specify the IP address
for the network management system that is acting as a trap receiver. See the
“Understanding Trap Support” section on page 1-21 for information about
supported trap types.
Enabling Authentication Traps
Procedure
To enable authentication traps, perform these steps:
Step 1
From the main menu, choose Configure.
Step 2
Choose SNMP.
Step 3
Choose Generate authentication traps.
Step 4
Press Enter to toggle between yes and no.
Configuring Trap Receiver Stations
Procedure
To set up to four trap receiver stations, perform these steps:
Step 1
From the main menu, choose Configure.
Step 2
Choose SNMP.
Step 3
Choose Trap receiver stations.
Step 4
Enter the IP address or host name of the network management system used to
receive the traps.
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C H A P T E R
3
Configuring the Telephony Settings on
the VG248
The telephony settings on the VG248 determine the functionality of the analog
phones connected to it. However, before configuring these settings, ensure that
you have completed the basic network configuration described in Chapter 2,
“Getting Started with the VG248.”
After verifying connectivity to the network, review these sections to customize
the telephony settings:
•
Identifying the Cisco CallManager TFTP Server, page 3-2
•
Changing the Cisco CallManager Device Name, page 3-2
•
Assigning Feature Codes, page 3-3
•
Identifying the Country Code for VG248, page 3-5
•
Changing the Hook Flash Timer for Analog Phones, page 3-31
•
Setting the Port Enable Policy, page 3-5
•
Configuring Port Parameters, page 3-7
•
Configuring Fax and Modem Settings, page 3-15
•
Configuring Advanced Settings, page 3-23
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Identifying the Cisco CallManager TFTP Server
Identifying the Cisco CallManager TFTP Server
The VG248 uses the TFTP server to identify the correct Cisco CallManager
system. If you are using DHCP, the VG248 attempts to obtain the TFTP server
address from the DHCP server. Or, you can select a different TFTP server by
modifying this setting. If you are not using DHCP, or if your DHCP server is not
configured with a TFTP server address, you should identify the TFTP server using
this setting.
Procedure
To assign a TFTP server, perform these steps:
Step 1
From the main menu, choose Configure.
Step 2
Choose Telephony.
Step 3
Choose CallManager TFTP server.
Step 4
Enter the IP address or host name of the TFTP server.
To enter multiple TFTP servers, separate them using a comma (,) or semicolon (;).
You can enter a maximum of five (5) TFTP servers.
Changing the Cisco CallManager Device Name
The VG248 uses the Cisco CallManager device name when registering ports with
Cisco CallManager. The actual device name used is the value shown for this menu
option followed by the port number. By default, this is set to “VGC” followed by
10 digits of the MAC address of the VG248. For example, port one would use
VCGxxxxxxxxxx01 as its device name, where xxxxxxxxxx are the last 10 digits
of the MAC address.
You can change the default device name, but you must use the standard format
described in the “Using Auto-Registration” section on page 5-2.
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Assigning Feature Codes
Procedure
To change the Cisco CallManager device name, perform these steps:
Step 1
From the main menu, choose Configure.
Step 2
Choose Telephony.
Step 3
Choose CallManager device name.
Step 4
Enter the new device name.
Assigning Feature Codes
Many of the telephony features available in standard and feature mode are
activated by feature codes, which end users indicate using the dial pad on their
telephones.
Procedure
To change these feature codes from their default values, follow these steps:
Step 1
From the main menu, choose Configure.
Step 2
Choose Telephony.
Step 3
Choose Feature codes.
Step 4
Choose the code to configure.
Step 5
Enter the setting for the code.
The default settings for the feature codes are as follows:
Code
Default Setting
Call Mode
Hang up last call
#1
Feature
Transfer
#2
Feature
Conference
#3
Feature
**0
Basic, Standard, Feature
**1
Basic, Standard, Feature
Forward all to voice mail1
Call forward
all1
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Assigning Feature Codes
Code
Default Setting
Call Mode
Cancel call forward
**2
Basic, Standard, Feature
Pickup
**3
Basic, Standard, Feature
Group Pickup
**4
Basic, Standard, Feature
Redial
*#
All
SpeedDial Voicemail
*0
All
SpeedDial 1
*1
All
SpeedDial 2
*2
All
SpeedDial 3
*3
All
SpeedDial 4
*4
All
SpeedDial 5
*5
All
SpeedDial 6
*6
All
SpeedDial 7
*7
All
SpeedDial 8
*8
All
SpeedDial 9
*9
All
1. When forward all is activated, users hear a distinctive dial tone to indicate that all
incoming calls are currently being forwarded to a different directory number.
Tip
•
If you set a feature code to a blank string, users cannot use that feature.
•
You cannot disable transfer or conference in standard mode because those
features are activated by hanging up or using the hook flash, rather than by
feature codes.
•
If you have two feature codes assigned to the same setting, one of the features
does not work.
•
If one feature code setting masks another, you cannot use the masked setting
(such as if transfer is * and conference is **, conference does not work).
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Identifying the Country Code for VG248
Identifying the Country Code for VG248
The country code identifies the country in which you are using the VG248. It
automatically sets country-specific settings, such as the sound of the tones, the
cadence of the rings, impedance, hook, and gain, for example.
Procedure
Follow these steps to set the country code:
Step 1
From the main menu, choose Configure.
Step 2
Choose Telephony.
Step 3
Choose Country.
Step 4
Choose the country name in which you are using the VG248.
If your country is not available, select a country that uses similar telephony
standards.
Setting the Port Enable Policy
To configure the ports on the VG248 and the features required for the analog
devices connected to the ports, you must add them to the Cisco CallManager
database.
The port enable policy on the VG248 determines whether the VG248 can enable
a port and register the phone in Cisco CallManager.
Before You Begin
The port enable policy interacts with the auto-registration settings in
Cisco CallManager. Review the following explanations before choosing a port
enable policy:
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Setting the Port Enable Policy
VG248
Cisco CallManager
Analog Phone Behavior
auto
auto-registration enabled
1.
User picks up the phone to use for
first time.
2.
VG248 attempts to register in
Cisco CallManager
3.
Cisco CallManager adds phone to
database.
4.
User makes call.
auto
auto-registration disabled
Tips
User picks up the phone to use for If the phone has
already been
first time.
manually added and
2. VG248 attempts to register in
configured in
Cisco CallManager
Cisco CallManager,
3. Cisco CallManager refuses
Cisco CallManager
registration.
recognizes this, and
the phone works.
4. If phone is not registered, user
1.
cannot make call.
manual
auto-registration enabled
or disabled
User picks up the phone to use for You can enable the
specific port that is
first time.
connected to this
2. VG248 does not attempt to register
phone. The VG248
with Cisco CallManager.
will then attempt to
3. User cannot make call.
register this port with
Cisco CallManager.
See the “Enabling a
Specific Port” section
on page 3-8 for
details.
1.
Procedure
To set the port enable policy on the VG248, follow these steps:
Step 1
From the main menu, choose Configure.
Step 2
Choose Telephony.
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Configuring Port Parameters
Step 3
Choose Port enable policy.
Step 4
Choose one of these options:
•
auto (default setting)
•
manual
Configuring Port Parameters
You must configure the VG248 ports using Cisco CallManager. Each of the ports
are entered in the Cisco CallManager database as a “VGC” phone type. See the
“Configuring VG248 Ports Using Cisco CallManager” section on page 5-1 for
details.
These sections provide details of the parameters that you configure on a per port
basis:
•
Enabling a Specific Port, page 3-8
•
Choosing the Call Control Mode, page 3-9
•
Enabling Caller ID, page 3-10
•
Choosing Message Waiting Indicator Type, page 3-11
•
Choosing a Call Supervision Method, page 3-12
•
Setting the Input Gain, page 3-13
•
Setting the Output Gain, page 3-13
•
Changing the Dialing Digit Detection, page 3-14
In addition to these sections, you can also configure many fax options on a per
port basis. Refer to these sections for a description of these fax features:
•
Enabling Fax Relay, page 3-16
•
Enabling Error Correction Mode, page 3-17
•
Enabling Fax Relay NSF, page 3-17
•
Configuring Pass-through Mode, page 3-18
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Configuring Port Parameters
Tip
Although these procedures describe how to make changes to individual ports, you
can configure a range of ports to use the same settings. To do this, choose
Telephony > Port specific parameters, and then press R on the keyboard. Then
enter a port range (such as 1-10, or 1, 2,3) and apply changes to all of those ports
at once.
Enabling a Specific Port
By enabling a specific port on the VG248, you are allowing it to be registered with
Cisco CallManager. When used in conjunction with the port enable policy (see the
“Setting the Port Enable Policy” section on page 3-5), you can determine whether
an analog phone can simply be plugged into a port connected to the VG248 and
be ready to use.
Before You Begin
Before changing the port enable status for a specific port, review these guidelines
to understand how this setting interacts with the port enable policy.
Port Enable Policy
Port Enable Status
Explanation
auto
enabled
You have used this phone and registered this port in
Cisco CallManager.
auto
disabled
You have either manually disabled the specific port
using the Telephony > Port specific parameters
menu, or no one has attempted to use a phone
connected to this port.
This is the default setting.
After someone attempts to use a phone connected to
this port, the port enable status will change to enabled.
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Configuring Port Parameters
Port Enable Policy
Port Enable Status
Explanation
manual
enabled
You have manually enabled the specific port using the
Telephony > Port specific parameters menu. By
doing this, you are overriding the manual setting on the
port enable policy.
When the VG248 starts up, the port will attempt to
register with Cisco CallManager.
manual
disabled
The port cannot be enabled by picking up the phone.
To use the phone, you must manually change the port
from disabled to enabled using the Telephony > Port
specific parameters menu.
Procedure
Follow these steps to enable a specific port:
Step 1
From the main menu, choose Configure.
Step 2
Choose Telephony.
Step 3
Choose Port specific parameters.
Step 4
Use the arrow keys to select the port to configure and press Enter.
Step 5
Choose Status.
Step 6
Choose enabled or disabled.
Choosing the Call Control Mode
The call control mode determines how users interact with their analog phones to
access features such as speed dialing, call transfer, conference, call waiting, and
so on.
For assistance determining which call control mode best meets your needs, see the
“Understanding Call Control Modes” section on page 1-4.
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Configuring Port Parameters
Procedure
Follow these steps to set the call control mode:
Step 1
From the main menu, choose Configure.
Step 2
Choose Telephony.
Step 3
Choose Port specific parameters.
Step 4
Use the arrow keys to select the port to configure and press Enter.
Step 5
Choose Call control mode.
Step 6
Choose one of the following:
•
restricted
•
basic
•
standard
•
feature
Enabling Caller ID
You can enable caller ID on a per-port basis. This allows caller ID information to
be passed to some, all, or none of the analog phones connected to the VG248.
Enabling caller ID determines how the VG248 handles any caller ID instructions
received from Cisco CallManager. If you are not using caller ID on
Cisco CallManager, then the VG248 does not receive any caller information to
pass on to the analog ports, regardless how you set the VG248.
Procedure
To enable caller ID for a specific port on the VG248, follow these instructions:
Step 1
From the main menu, choose Configure.
Step 2
Choose Telephony.
Step 3
Choose Port specific parameters.
Step 4
Use the arrow keys to select the port to configure and press Enter.
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Configuring Port Parameters
Step 5
Choose Caller ID.
Step 6
Choose from the following options:
•
enabled
•
not with call waiting—Caller ID displays only if the phone is on-hook.
•
disabled.
Choosing Message Waiting Indicator Type
The VG248 supports several types of methods for sending MWI messages to
analog phones. Because you might have different types of analog phones
connected to the VG248, you can modify the MWI type on a per-port basis. So, if
you have some analog phones that have MWI lamps on them, you can notify users
of awaiting messages using the lamp. Or, you can choose to play a tone when users
pick up their phones.
Keep in mind that the VG248 only sends this information to the phones if it is
received from Cisco CallManager. If Cisco CallManager is not integrated with
your voice mail system, it does not send this information to the VG248.
Procedure
To choose the MWI type, follow these steps:
Step 1
From the main menu, choose Configure.
Step 2
Choose Telephony.
Step 3
Choose Port specific parameters.
Step 4
Use the arrow keys to select the port to configure and press Enter.
Step 5
Choose MWI type.
Step 6
Choose from the following options:
•
lamp—illuminates lamp on phone
•
caller ID—uses caller ID mechanism to send MWI messages to the LCD
screen on phone
•
stutter—plays tones when user picks up the phone
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Configuring the Telephony Settings on the VG248
Configuring Port Parameters
•
lamp + stutter—illuminates lamp and plays tone
•
caller ID + stutter—sends message to LCD screen and plays tone
•
none—does not send MWI information
Choosing a Call Supervision Method
You can choose between several different call supervision methods:
•
None—no call supervision
•
Drop loop current—indicates to an analog device that the remote caller has
hung up. For example, if a user calls someone with an answering machine,
leaves a message, and hangs up, disconnect supervision is the electrical state
that briefly drops the loop current and indicates to the answering machine that
the caller has hung up.
•
Reverse polarity—useful for billing systems. When a call connects, polarity
reverses, indicating that charges begin to accrue. When the call goes down,
polarity reverses back to normal and charges stop.
Procedure
Follow these steps to choose a call supervision method on a per port basis:
Step 1
From the main menu, choose Configure.
Step 2
Choose Telephony.
Step 3
Choose Port specific parameters.
Step 4
Use the arrow keys to select the port to configure and press Enter.
Step 5
Choose Call supervision method.
Step 6
Choose one of the following options:
•
none
•
drop loop current
•
reverse polarity
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Configuring the Telephony Settings on the VG248
Configuring Port Parameters
Setting the Input Gain
The input gain specifies, in decibels, the amount of gain from the analog phone to
the VG248.
The country option you set on the VG248 determines the default input gain.
However, you might need to modify it to account for different cable lengths, to
make the signal louder or quieter, or to use a phone from a different country.
Procedure
Follow these steps to modify the input gain. The default setting is based on the
country code you set (see the“Identifying the Country Code for VG248” section
on page 3-5).
Step 1
From the main menu, choose Configure.
Step 2
Choose Telephony.
Step 3
Choose Port specific parameters.
Step 4
Use the arrow keys to select the port to configure and press Enter.
Step 5
Choose Input gain.
Step 6
Choose from the available options (ranging from -6dB through + 14db).
Keep in mind that the value you are choosing is a delta value and does not reflect
the actual gain value. For example, if the base value is -3dB, you might choose
+1dB as the delta value. Therefore, the actual gain value for that port is -2dB
overall.
Setting the Output Gain
The output gain specifies, in decibels, the amount of gain from the VG248 to the
analog phone.
The country option you set on the VG248 determines the default output gain.
However, you might need to modify it to account for different cable lengths
(longer cables might require more gain), to make the signal quieter, or to use a
phone from a different country.
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Configuring the Telephony Settings on the VG248
Configuring Port Parameters
Procedure
Follow these steps to modify the input gain. The default setting is based on the
country code you set (see the“Identifying the Country Code for VG248” section
on page 3-5).
Step 1
From the main menu, choose Configure.
Step 2
Choose Telephony.
Step 3
Choose Port specific parameters.
Step 4
Use the arrow keys to select the port to configure and press Enter.
Step 5
Choose Output gain.
Step 6
Choose from the available options (ranging from -14dB through 0db)
Keep in mind that the value you are choosing is a delta value and does not reflect
the actual gain value. For example, if the base value is -3dB, you might choose
+1dB as the delta value. Therefore, the actual gain value for that port is -2dB
overall.
Changing the Dialing Digit Detection
The VG248 detects DTMF tones when users press the keys on their telephones.
However, if the VG248 is having difficulty detecting the DTMF tones on some
phones, you can change the dialing digit detection setting.
Changing this setting enables the VG248 to recognize the DTMF tones when
users press the keys to make a new call. However, once the call connects, the
VG248 might fail to recognize the DTMF tones again if users need to navigate
through DTMF-driven menus.
You should only change this setting if you are working with a Cisco technical
representative.
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Configuring the Telephony Settings on the VG248
Configuring Fax and Modem Settings
Procedure
Follow these steps to change this setting:
Step 1
From the main menu, choose Configure.
Step 2
Choose Telephony.
Step 3
Choose Port specific parameters.
Step 4
Use the arrow keys to select the port to configure and press Enter.
Step 5
Choose Dialing digit detection.
Step 6
Choose one of the following options:
•
default: use DSP
•
alternate: use SLIC
Configuring Fax and Modem Settings
The VG248 enables you to integrate analog fax machines and modems with
Cisco CallManager. These sections provide details of recommended settings to
help achieve the most reliable and compatible configuration:
•
Enabling Fax Relay, page 3-16
•
Enabling Error Correction Mode, page 3-17
•
Enabling Fax Relay NSF, page 3-17
•
Configuring Pass-through Mode, page 3-18
•
Configuring Pass-through Signaling, page 3-19
•
Changing the Fax Relay Payload Size, page 3-20
•
Setting Maximum Speed of Fax Relay, page 3-21
•
Modifying the Fax Relay Playout Delay, page 3-22
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Configuring the Telephony Settings on the VG248
Configuring Fax and Modem Settings
Enabling Fax Relay
When making fax calls through a VG248, the VG248 uses either fax pass-through
or Cisco fax relay to transport the document information. Fax pass-through sends
the signals in an audio form similar to that used for a normal voice call. Cisco fax
relay encodes the information in a different format which is converted back to
analog fax signals by the other party in the call.
Fax relay is more robust and should normally be enabled. However, some types of
modems sometimes appear to the VG248 to be sending fax signals. In these cases,
Cisco fax relay should not be initiated. If you experience these modem problems,
disable fax relay on the affected ports on the VG248.
If Cisco fax relay is enabled on the VG248 and the far-end gateway only supports
fax pass-through, the VG248 can negotiate fax pass-through. However, if the
VG248 is configured with Cisco fax relay disabled, then the VG248 cannot
negotiate Cisco fax relay even if the far-end gateway can perform Cisco fax relay
too.
You can enable fax relay on a per port basis instead. This enables you to configure
individual ports for Cisco fax relay or fax pass-through to ensure best
performance depending on the types of fax machines attached.
Cisco fax relay is enabled by default on all ports. To disable Cisco fax relay and
use fax pass-through instead, follow these steps:
Procedure
Follow these steps to change the fax relay settings:
Step 1
From the main menu, choose Configure.
Step 2
Choose Telephony.
Step 3
Choose Port specific parameters.
Step 4
Use the arrow keys to select the port to configure and press Enter.
Step 5
Choose Fax relay.
Step 6
Choose disabled to disable Cisco fax relay.
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Configuring the Telephony Settings on the VG248
Configuring Fax and Modem Settings
Enabling Error Correction Mode
Error Correction Mode (ECM) is intended to eliminate errors in the fax
transmission. By default, ECM is enabled on the VG248. With ECM enabled, if
packets drop, the receiving fax machine generates retransmission requests. If the
packet drop is excessive, the call duration increases, and the call might be
dropped.
For Cisco fax relay calls, you can disable ECM on the gateway itself rather than
disabling it on multiple fax machines. However, if packet drops occur, the fax
image quality might deteriorate. Therefore, you should disable ECM only after
considering whether you want to risk compromising image quality rather than
experiencing longer call durations or dropped calls. You should also monitor and
evaluate the network to identify and resolve the cause of the dropped packets.
If the fax call uses fax pass-through, ECM will not be disabled regardless how the
ECM option is configured on the VG248.
Procedure
Follow these steps to modify the ECM settings:
Step 1
Choose Telephony.
Step 2
Choose Port specific parameters.
Step 3
Use the arrow keys to select the port to configure and press Enter.
Step 4
Choose Fax relay ECM.
Step 5
Choose disabled to disable ECM.
Enabling Fax Relay NSF
Non-standard facilities (NSF) enables fax manufacturers to implement
proprietary extensions to the fax protocol if the fax machines detect that they are
talking to another machine from the same company.
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Configuring the Telephony Settings on the VG248
Configuring Fax and Modem Settings
You can choose one of these options:
•
Preserve value—Retains the proprietary NSF information
•
Override with zeros—Replaces the NSF data containing the manufacturer's
ID with zeros to eliminate possible conflicts with Cisco fax relay.
Procedure
Follow these steps to modify the fax relay NSF settings:
Step 1
Choose Telephony.
Step 2
Choose Port specific parameters.
Step 3
Use the arrow keys to select the port to configure and press Enter.
Step 4
Choose Fax relay NSF.
Step 5
Choose one of the following options:
•
preserve value—default setting
•
override with 000000
Configuring Pass-through Mode
Typically, you should not modify these options unless you are experiencing
specific difficulties with fax machines or modems connected to the VG248. You
should work with a Cisco technical representative to resolve these more complex
issues.
Procedure
Follow these steps to configure pass-through mode:
Step 1
Choose Telephony.
Step 2
Choose Port specific parameters.
Step 3
Use the arrow keys to select the port to configure and press Enter.
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Configuring the Telephony Settings on the VG248
Configuring Fax and Modem Settings
Step 4
Choose Passthrough mode.
Step 5
Choose one of the following options:
•
default:automatic—do not modify unless instructed to do so
•
voice only: no passthrough
•
passthrough only: ECAN disabled
•
passthrough only: ECAN enabled
Configuring Pass-through Signaling
The VG248 negotiates Cisco fax relay and fax pass-through with far-end gateways
by sending special RTP packets to identify the call type (fax, modem, voice) and
method (Cisco fax relay or fax pass-through). The VG248 supports two different
pass-through signaling methods for negotiating fax, modem, and voice:
•
Legacy—Used for older versions of the VG248, WS-X6624-FXS, and
WS-X6608-T1 or E1 gateways.
To determine if these devices are using legacy mode:
– For VG248, if this menu option is not present in the software interface,
then it only supports legacy pass-through signalling.
– For the S-X6624-FXS, and WS-X6608-T1 or E1 gateways, check the
entries for these devices in Cisco CallManager. If the NSE type field is
not present in the gateway parameters, the device only supports legacy
pass-through signalling.
•
IOS mode—Used if the far-end gateway meets any of these conditions:
– Runs Cisco IOS
– Is an ATA-186/188
– WS-X6624-FXS and WS-X6608-T1 or E1 gateways that have NSE type
in Cisco CallManager
– VG248 gateway with the pass-through signaling option.
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Configuring the Telephony Settings on the VG248
Configuring Fax and Modem Settings
Before You Begin
You should only modify this setting if you are experiencing complex technical
issues and are instructed to make changes by a Cisco technical representative.
Procedure
Follow these steps to configure pass-through signaling:
Step 1
From the main menu, choose Configure.
Step 2
Choose Telephony.
Step 3
Choose Advanced settings.
Step 4
Choose Passthrough signaling.
Step 5
Choose one of the following options:
•
legacy
•
IOS mode
Changing the Fax Relay Payload Size
By default, if a Cisco fax relay call takes place, the encoded fax information is
transported in 20 byte payloads. However, if the remote fax relay device is
configured to use a different payload size, calls can fail because of the
mismatched data rates. You can change this setting on the VG248, but you should
also verify that all participating Cisco fax relay devices in the network have this
parameter set to the same value.
Before You Begin
You should only modify this setting if you are experiencing complex technical
issues and are instructed to make changes by a Cisco technical representative.
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Configuring the Telephony Settings on the VG248
Configuring Fax and Modem Settings
Procedure
Follow these instructions to change the Cisco fax relay payload size
Step 1
From the main menu, choose Configure.
Step 2
Choose Telephony.
Step 3
Choose Advanced settings.
Step 4
Choose Fax relay payload size.
Step 5
Enter a new value from 20 to 48 bytes.
Setting Maximum Speed of Fax Relay
The default speed for Cisco fax relay is 14400 bps. You should not need to change
this unless you are concerned about bandwidth limitations. In those situations,
you can change the speed from 2400 bps to 14400 bps. Or, you can choose voice
bandwidth which limits the speed to whatever the voice codec was using before.
Procedure
Follow these steps to set the maximum speed of fax relay:
Step 1
From the main menu, choose Configure.
Step 2
Choose Telephony.
Step 3
Choose Advanced settings.
Step 4
Choose Fax relay maximum speed.
Step 5
Choose one of the available options:
•
voice bandwidth
•
2400 bps
•
4800 bps
•
7200 bps
•
9600 bps
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Configuring the Telephony Settings on the VG248
Configuring Fax and Modem Settings
•
12000 bps
•
14400 bps
Modifying the Fax Relay Playout Delay
The fax relay playout delay determines the time duration of the jitter buffer. By
default this is 300ms, which is adequate for most networks with an average
amount of jitter.
For an explanation of the jitter issues in IP telephony networks, refer to the
document, Playout Delay Enhancements for Voice over IP, available at the
following location on Cisco.com:
http://www.cisco.com/en/US/products/sw/iosswrel/ps1834/products_feature_gui
de09186a008008033c.html
Before You Begin
You should only modify this setting if you are experiencing complex technical
issues and are instructed to make changes by a Cisco technical representative.
Procedure
Follow these steps to modify the fax relay playout delay:
Step 1
From the main menu, choose Configure.
Step 2
Choose Telephony.
Step 3
Choose Advanced settings.
Step 4
Choose Fax relay playout delay.
Step 5
Enter a new time duration.
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Configuring the Telephony Settings on the VG248
Configuring Advanced Settings
Configuring Advanced Settings
The VG248 has several settings that typically do not require any changes. You
should only modify these settings if you are experiencing complex technical
issues and are instructed to make changes by a Cisco technical representative.
In addition to these sections, several of the fax settings (see “Configuring Fax and
Modem Settings” section on page 3-15) are also considered to be advanced
settings.
These sections provide information about the advanced settings:
•
Reverting to Previous Configuration, page 3-23
•
Using SRST, page 3-24
•
Preserving Calls, page 3-26
•
Setting Media Receive Timeout, page 3-27
•
Enabling Busy Tones on Off-Hook Ports, page 3-28
•
Modifying the DTMF Tone Duration, page 3-29
•
Choosing an Echo Cancelling Policy, page 3-30
•
Changing the Hook Flash Timer for Analog Phones, page 3-31
•
Changing the Hook Flash Reject Period, page 3-31
Reverting to Previous Configuration
By default, the VG48 ports identify their configuration using TFTP. This
configuration determines the Cisco CallManager system to which these ports
connect.
If persistent TFTP problems prevent the VG248 from retrieving this
configuration, the VG248 ports can revert to their previous configuration. This
enables the ports to connect to the Cisco CallManager system with which they
were previously registered.
By default, the VG248 automatically reverts to the previous configuration if the
ports fail to connect via TFTP.
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Configuring the Telephony Settings on the VG248
Configuring Advanced Settings
Before You Begin
You should only modify these settings if you are experiencing complex technical
issues and are instructed to make changes by a Cisco technical representative.
Procedure
To disable this functionality, follow these steps:
Step 1
From the main menu, choose Configure.
Step 2
Choose Telephony.
Step 3
Choose Advanced settings,
Step 4
Choose Allow last good configuration.
Step 5
Choose one of the following:
•
enabled
•
disabled
Using SRST
The Survivable Remote Site Telephony (SRST) feature provides the
Cisco CallManager with fallback support for the VG248. SRST enables a router
or other nominated device to provide call handling support for the Cisco IP phones
when the Cisco IP phones lose connection to the Cisco CallManager. Survivable
Remote Site Telephony (SRST) indicates that there is an SRST device capable of
providing Cisco CallManager functionality with a limited feature set. If all other
Cisco CallManager servers are unreachable, this device assumes control of call
processing.
Allowing Use of SRST
By default, the VG248 allows use of SRST on the default router. However, you
can disable SRST or specify a different SRST provider. If you choose an
alternative provider, you must also follow the steps in the “Choosing an SRST
Provider” section on page 3-25.
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Configuring the Telephony Settings on the VG248
Configuring Advanced Settings
Before You Begin
You should only modify these settings if you are experiencing complex technical
issues and are instructed to make changes by a Cisco technical representative.
Procedure
Follow these steps to change the SRST setting:
Step 1
From the main menu, choose Configure.
Step 2
Choose Telephony.
Step 3
Choose Advanced settings
Step 4
Choose SRST policy.
Step 5
Choose one of the following:
•
disabled
•
enabled: use default router
•
enabled: use specified provider
Choosing an SRST Provider
If you do not want to use the default router as the SRST device, you must specify
an alternative. By default, the VG248 connects to TCP port 2000 on the SRST
device, but you can specify a different port.
Before You Begin
You should only modify these settings if you are experiencing complex technical
issues and are instructed to make changes by a Cisco technical representative.
Procedure
Follow these steps to choose an SRST provider:
Step 1
From the main menu, choose Configure.
Step 2
Choose Telephony.
Step 3
Choose Advanced settings
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Configuring the Telephony Settings on the VG248
Configuring Advanced Settings
Step 4
Choose SRST provider.
Step 5
Enter the IP address or host name of the device to use as an SRST provider.
To specify an alternative port, append the port number to the IP address or host
name using a colon. This example indicates that the host name is SRSTrouter and
the VG248 should connect to port 9999: SRSTrouter:9999
Preserving Calls
Call preservation allows the VG248 to continue active calls if the connectivity to
Cisco CallManager to which the VG248 is registered is lost. If connectivity is
lost, each VG248 port with an active call enters call preservation mode. In this
mode, the VG248 continues to send and receive media with the other party in the
call. When the active call ends (phone returns on-hook), the call is terminated, call
preservation mode ceases, and the VG248 registers with another
Cisco CallManager or SRST device.
Under certain circumstances you might not want to activate call preservation. For
example, when interacting with the voice mail system, if the VG248 does not
receive indication from Cisco CallManager that an incoming call has been
terminated, the voice mail system might not go on-hook, resulting in the port
becoming permanently unavailable.
Before You Begin
You should only modify these settings if you are experiencing complex technical
issues and are instructed to make changes by a Cisco technical representative.
Procedure
Follow these steps to configure call preservation:
Step 1
From the main menu, choose Configure.
Step 2
Choose Telephony.
Step 3
Choose Advanced settings
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Configuring Advanced Settings
Step 4
Choose Call preservation.
Step 5
Choose one of the following:
•
disabled
•
enabled: no timeout
•
enabled: 2 minute timeout
Setting Media Receive Timeout
If the connection between the VG248 and Cisco CallManager is lost and the
VG248 is on a call, the VG248 maintains the call using call preservation (see
“Preserving Calls” section on page 3-26 for details).
However, if the remote party of the call, such as a Cisco IP Phone on a different
Cisco CallManager cluster, fails or loses its connection to Cisco CallManager, the
VG248 cannot identify this failure or return the port to an on-hook state. The
result is that the particular voice mail port or analog device might perpetually
appear to be busy
To resolve this, you can modify the media receive timeout. By default, the media
receive timeout is set to disabled. When enabled, this feature causes the VG248
to disconnect the call if no media packets have been received during the specified
interval.
Before You Begin
You should only modify these settings if you are experiencing complex technical
issues and are instructed to make changes by a Cisco technical representative.
Procedure
Follow these steps to change the media receive timeout setting:
Step 1
From the main menu, choose Configure.
Step 2
Choose Telephony.
Step 3
Choose Advanced settings
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Configuring the Telephony Settings on the VG248
Configuring Advanced Settings
Step 4
Choose Media receive timeout.
Step 5
Choose one of the following:
•
enabled: 2 minutes
•
disabled
Enabling Busy Tones on Off-Hook Ports
From the perspective of Cisco CallManager, the state of an analog device
connected to the VG248 might not necessarily correspond to its physical hook
state. For example, if the user is on a call and the remote user hangs up, that port
becomes idle, and new calls can be placed to it. however, from the user’s
perspective, the actual analog phone might still be off-hook, and they might
expect callers to hear a busy tone when dialing the extension number. In fact, in
all call control modes (except restricted), the following occur:
1.
Callers to the off-hook extension hear a ring-back tone
2.
The VG248 sends the call-waiting tone to the analog phone
3.
The user can answer the call using hook-flash.
If you do not want this to happen, you can configure the VG248 to keep off-hook
ports busy so remote callers will hear a busy tone until the handset physically goes
on-hook.
Before You Begin
You should only modify these settings if you are experiencing complex technical
issues and are instructed to make changes by a Cisco technical representative.
Procedure
Follow these steps to enable this feature:
Step 1
From the main menu, choose Configure.
Step 2
Choose Telephony.
Step 3
Choose Advanced settings
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Configuring the Telephony Settings on the VG248
Configuring Advanced Settings
Step 4
Choose Busy out off hook ports.
Step 5
Choose one of the following:
•
disabled
•
enabled
Modifying the DTMF Tone Duration
During a call, if the remote party presses a number on the telephone keypad,
Cisco CallManager instructs the VG248 to play a DTMF tone to the attached
analog device. However, this analog device could be a voice mail or other IVR
system on which such tones are used to navigate an automatic, interactive system.
By default, the VG248 plays these DTMF tones for 100ms duration, with 100ms
gaps between the tones. Thus, each tone requires a total of 200ms to complete.
However, you can modify the length of the audio tone if the attached system is
experiencing difficulties.
Before You Begin
You should only modify these settings if you are experiencing complex technical
issues and are instructed to make changes by a Cisco technical representative.
Procedure
Follow these steps to modify the DTMF tone duration:
Step 1
From the main menu, choose Configure.
Step 2
Choose Telephony.
Step 3
Choose Advanced settings
Step 4
Choose DTMF tone duration
Step 5
Choose one of the following:
•
100ms
•
150ms
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Configuring the Telephony Settings on the VG248
Configuring Advanced Settings
•
200ms
•
250ms
Choosing an Echo Cancelling Policy
You can select an alternative method for cancelling echo that might be present in
the system. For an explanation of the echo issues in IP telephony networks, refer
to the document, Echo Analysis for Voice over IP, available at the following
location on Cisco.com:
http://www.cisco.com/univercd/cc/td/doc/cisintwk/intsolns/voipsol/ea_isd.htm
The default echo cancelling technique in version 1.1(2) is identical to previous
software versions. You should only change this setting if you experience certain
specific echo issues in your network and you are instructed to do so by a Cisco
technical representative.
Before You Begin
You should only modify these settings if you are experiencing complex technical
issues and are instructed to make changes by a Cisco technical representative.
Procedure
Follow these steps to choose the echo cancelling policy:
Step 1
From the main menu, choose Configure.
Step 2
Choose Telephony.
Step 3
Choose Advanced settings
Step 4
Choose Echo cancelling policy.
Step 5
Choose one of the following:
•
default: use SLIC
•
alternate: use DSP
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Configuring the Telephony Settings on the VG248
Configuring Advanced Settings
Changing the Hook Flash Timer for Analog Phones
The hook flash timer is the length of time before the hook flash indicates a
time-out (or call disconnect). The hook flash timer setting is based on the country
of origin of the analog phones. This is normally set to the default value for the
country code selected, but you can modify this setting.
Before You Begin
You should only modify these settings if you are experiencing complex technical
issues and are instructed to make changes by a Cisco technical representative.
Procedure
To change the hook flash timer, follow these steps:
Step 1
From the main menu, choose Configure.
Step 2
Choose Telephony.
Step 3
Choose Advanced settings
Step 4
Choose Hook flash timer.
Step 5
Choose the appropriate hook flash timer value (ranging from 100-1500ms).
Changing the Hook Flash Reject Period
This option allows hook-flashes to be ignored for a short period after an off-hook
event. Unless you are experiencing difficulties with the VG248 not distinguishing
between on-hook, off-hook, and flash signalling, you should not need to change
this setting.
Before You Begin
You should only modify these settings if you are experiencing complex technical
issues and are instructed to make changes by a Cisco technical representative.
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Configuring the Telephony Settings on the VG248
Configuring Advanced Settings
Procedure
To change this setting, follow these steps:
Step 1
From the main menu, choose Configure.
Step 2
Choose Telephony.
Step 3
Choose Advanced settings
Step 4
Choose Hook flash reject period.
Step 5
Choose one of the following options:
•
None
•
200 ms
•
500 ms
•
1000 ms
•
2000 ms
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4
Configuring Voice Mail Settings
To properly prepare the VG248 to support analog voice mail systems that use
implement SMDI, MCI, or Ericsson voice mail protocols, you must modify some
local configuration settings. Some of these settings must match settings on the
voice mail system or Cisco CallManager. Therefore, you must be familiar with the
configuration settings on those systems as well.
These sections provide details about the required configuration options:
•
Connecting the Voice Mail Links to the VG248, page 4-2
•
Configuring Universal Voice Mail Settings, page 4-3
•
Configuring SMDI Settings, page 4-12
•
Configuring Settings for MCI Voice Mail, page 4-16
•
Configuring Settings for Ericsson Voice Mail, page 4-18
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Configuring Voice Mail Settings
Connecting the Voice Mail Links to the VG248
Connecting the Voice Mail Links to the VG248
The voice mail protocols are RS-232-based serial protocols, and the VG248 has
two serial ports for supporting voice mail connections, the Async 1 and Async 2
ports (see Figure 4-1).
Figure 4-1
VG248 Voice Mail Connections
4
8 12 16 20 24 Ports 28-48
28 32 36 40 44 48
1
68462
Ports 1-24
10/100
BASE-TX
Li 10 R Tx
nk 0 x
A A
2 1
CONSOLE
C St Po
on a w
so tus er
le
VG 248
ASYNC 1 ASYNC 2
3
2
1
Async 1
2
Async 2
3
LEDs
Both serial ports operate at a default rate and format of 9600 baud, no parity, 8
data bits, one stop bit, and no flow control. However, you can change these
settings (see the “Modifying Serial Settings for Async Ports” section on page 4-10
for details). Use a standard RJ-45-to-RJ-45 rollover serial cable (up to 50 feet in
length) and either an RJ-45-to-DB-9 adapter or an RH-45-to-DP25 adapter to
connect the VG248 to other voice mail devices using these ports:
•
Async 1—the primary serial port used for connecting to the voice mail system
(any configuration) or voice mail source (chained or multiplexing
configuration). If you are using a single VG248 device, connect the voice
mail system to the Async 1 port on the VG248. With multiple VG248 devices,
use the Async 1 port to connect to the previous VG248 device’s Async 2 port.
•
Async 2—used for connecting multiple VG248 devices together. If there are
multiple VG248 devices in use, connect the Async 2 port of the first VG248
device (which is connected directly to the voice mail system via the Async 1
port) to the next VG248 device’s Async 1 port. Continue to connect all the
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Configuring Voice Mail Settings
Configuring Universal Voice Mail Settings
VG248 devices in the chain similarly. If you are connecting a legacy PBX
system to the voice mail chain, connect the Async 2 port of the last chained
VG248 device to the voice mail port of the legacy PBX.
Configuring Universal Voice Mail Settings
The VG248 supports several different analog voice mail protocols, including
SMDI, MCI, and Ericsson. Although each of these protocols have some settings
that are specific to them, many settings on the VG248 apply to all of these
protocols.
These sections describe the voice mail settings on the VG248 that apply to all of
the supported voice mail protocols:
•
Choosing a Voice Mail Protocol, page 4-3
•
Identifying the Pilot Directory Number, page 4-4
•
Assigning Number of Voice Mail Ports, page 4-5
•
Identifying the First Voice Mail Port Number, page 4-5
•
Setting the Number Format, page 4-6
•
Forwarding MWIs to Cisco CallManager, page 4-7
•
Forwarding MWIs to Async 2, page 4-8
•
Identifying the Directory Number for Setting MWI on Cisco CallManager,
page 4-9
•
Identifying the Directory Number for Clearing MWI on Cisco CallManager,
page 4-9
•
Modifying Serial Settings for Async Ports, page 4-10
Choosing a Voice Mail Protocol
You can integrate analog voice mail systems that are compatible with either
SMDI, MCI, or Ericsson voice mail protocols.
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Configuring Voice Mail Settings
Configuring Universal Voice Mail Settings
Procedure
To choose the protocol used by your voice mail system, follow these steps:
Step 1
From the main menu, choose Configure.
Step 2
Choose Voice mail.
Step 3
Choose Voice mail protocol.
Step 4
Choose one of the following options:
•
SMDI
•
MCI
•
Ericsson
Identifying the Pilot Directory Number
The pilot directory number corresponds to the number users dial on their phones
to access voice mail. This enables the VG248 to distinguish between calls made
to retrieve a user’s voice mail from calls made to leave a voice mail for another
user.
The pilot directory number configured on the VG248 must match the value
configured in Cisco CallManager. See the “Configuring the Voice Mail Hunt
Group in Cisco CallManager” section on page 5-8 for information specific to your
version of Cisco CallManager.
Procedure
To identify the pilot directory number, follow these steps:
Step 1
From the main menu, choose Configure.
Step 2
Choose Voice mail.
Step 3
Choose Pilot directory number.
Step 4
Enter the number, which corresponds to the setting in Cisco CallManager.
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Configuring Voice Mail Settings
Configuring Universal Voice Mail Settings
Assigning Number of Voice Mail Ports
By default, none of the ports on the VG248 are configured to send voice mail
information about calls made to those ports. To enable the voice mail protocols,
you must assign the number of voice mail ports a value from 1 to 48. Using fewer
than 48 ports for voice mail means that the remaining ports can be used for
connecting analog phones, modems, or fax machines.
If you use fewer than 48 ports for voice mail, you must ensure that the voice mail
ports are consecutive ports beginning with port 1. For example, if this value is set
to “10”, VG248 ports 1 through 10 should be connected to the voice mail system
and ports 11 to 48 are available for other analog devices.
Procedure
To assign the number of voice mail ports, follow these steps:
Step 1
From the main menu, choose Configure.
Step 2
Choose Voice mail.
Step 3
Choose Number of voice mail ports.
Step 4
Enter the number of voice mail ports.
The default setting is 0.
Identifying the First Voice Mail Port Number
With a single VG248 connected to a voice mail system (such as in the basic
configuration), port 1 on the VG248 should be connected to port 1 of the voice
mail system, and similarly for the other VG248 ports.
However, with multiple VG248 devices connected to a single voice mail system
(such as in the chained configuration) this simple mapping is possible only on the
first VG248. On the other VG248 devices, port 1 must connect to higher voice
mail port numbers.
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Configuring Universal Voice Mail Settings
Using this setting, you can identify the first port used on the voice mail system.
This value should correspond to the port number on the voice mail system to
which port 1 is connected. In all cases, connections from a single VG248 must use
consecutive, successive ports of the voice mail system.
For example, if two VG248 devices are connected to a 96 port voice mail system,
one VG248 connects to ports 1-48, and the other connects to ports 49-96. On the
first VG248 device, set the First voice mail port number to 1 (the default value)
and set the value to 49 on the second VG248.
As another example, if 80 voice mail ports were in use and two VG248 devices
were each providing 40 ports, the Number of voice mail ports on each VG248
would be set to 40, and the First voice port number would be set to 1 on the first
VG248 and 41 on the second VG248.
Procedure
Follow these steps to change the first voice mail port number:
Step 1
From the main menu, choose Configure.
Step 2
Choose Voice mail.
Step 3
Choose First voice mail port number.
Step 4
Enter the voice mail port index which corresponds to port 1 of the VG248.
Setting the Number Format
In some instances, the VG248 must extend extension numbers before passing
them to the voice mail system. For example, if the minimum length is set to more
digits than are present in the Cisco CallManager voice mail box numbers, the
VG248 adds zeroes to the left of the number. For example, if the Number length
is set to seven digits. the extension number 1234 becomes 0001234
Number format allows other digits to be used. For example, with a Number
format of 1234567, the extension number 8989 would become 1238989. Zeroes
are used for any additional required digits. For example, with SMDI, if Number
length was 10, the final extension number would be 0001238989. If the Number
length is set to <unpadded>, this setting has no effect.
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Configuring Voice Mail Settings
Configuring Universal Voice Mail Settings
Procedure
Follow these steps to modify the number format:
Step 1
From the main menu, choose Configure.
Step 2
Choose Voice mail.
Step 3
Choose Number format.
Step 4
Enter the required number format.
Forwarding MWIs to Cisco CallManager
You can specify whether the VG248 sends MWI commands it receives from the
voice mail system to Cisco CallManager.
Before You Begin
Follow these guidelines for enabling this setting based on your configuration:
•
Basic—Enable this on the VG248 system.
•
Chained—Enable this on only one of the VG248s in a chain, and for
simplicity, set it on the one directly connected to the voice mail system.
•
Multiplexing—Enable this on one VG248 connected to each
Cisco CallManager cluster.
Procedure
To forward MWIs to Cisco CallManager, follow these steps:
Step 1
From the main menu, choose Configure.
Step 2
Choose Voice mail.
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Configuring Universal Voice Mail Settings
Step 3
Choose Forward MWIs to CallManager.
Step 4
Choose one of the following:
•
yes
•
no
Forwarding MWIs to Async 2
You can specify whether the VG248 forwards MWI commands received from the
voice mail system to the next device in the voice mail chain.
Before You Begin
Follow these guidelines for enabling this setting based on your configuration:
•
Basic—Do not enable this setting.
•
Chained—Enable this setting on all VG248 devices except the last device in
the chain on which you have set Forward MWIs to CallManager to yes.
•
Multiplexed—Enable this setting on all VG248 devices if you are connecting
to a legacy PBX system. Otherwise, follow the guidelines for the chained
configuration.
Procedure
To forward MWIs to Async 2, follow these steps:
Step 1
From the main menu, choose Configure.
Step 2
Choose Voice mail.
Step 3
Choose Forward MWIs to Async 2.
Step 4
Choose one of the following:
•
yes
•
no
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Configuring Voice Mail Settings
Configuring Universal Voice Mail Settings
Identifying the Directory Number for Setting MWI on
Cisco CallManager
If you have enabled the VG248 to forward MWI commands from the voice mail
system to Cisco CallManager, you must identify the directory number used to set
MWI commands.
These values must match the MWI settings configured in Cisco CallManager. See
the “Configuring the MWI Port Using Cisco CallManager” section on page 5-14
for information specific to your version of Cisco CallManager.
Procedure
To identify the directory number used to set MWI commands, follow these steps:
Step 1
From the main menu, choose Configure.
Step 2
Choose Voice mail.
Step 3
Choose CallManager MWI on DN.
Step 4
Enter the value that matches the parameter in Cisco CallManager.
Identifying the Directory Number for Clearing MWI on
Cisco CallManager
If you have enabled the VG248 to forward MWI commands from the voice mail
system to Cisco CallManager, you must identify the directory number used to
clear MWI commands.
These values must match the MWI settings configured in Cisco CallManager. See
the “Configuring the MWI Port Using Cisco CallManager” section on page 5-14
for information specific to your version of Cisco CallManager.
Procedure
To identify the directory number used to clear MWI commands, follow these
steps:
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Configuring Universal Voice Mail Settings
Step 1
From the main menu, choose Configure.
Step 2
Choose Voice mail.
Step 3
Choose CallManager MWI off DN.
Step 4
Enter the value that matches the parameter in Cisco CallManager.
Modifying Serial Settings for Async Ports
The VG248 uses the Async 1 and Async 2 serial ports to transport voice mail
protocols.
You can modify the settings on these ports to synchronize with those required by
your voice mail system.
Note
The console port, used to access the VG248 menu interface through a serial
connection, remains fixed at: 9600 baud, 8 data bits, no parity and 1 stop bit.
Async port speed
This parameter defines the baud rate used for the Async 1 and Async 2 serial
connections used to connect VG248 devices to an analog voice mail system or to
a legacy PBX. The speed of the Async 1 and Async 2 must be the same, and this
speed must match the baud rate of the analog voice mail system’s port. If you have
chained multiple VG248 devices together, ensure that each device is set to the
same port speed.
Async 1 or 2 Data Bits
You can set the number of data bits being used for the serial connection of the
Async 1 or Async 2 port to be 8 (the default value) or 7.
Set this value to match the corresponding setting of the device to which the Async
port is connected.
•
Async 1—setting should match the setting on the voice mail port of the
analog voice mail system or the Async 2 port of the next VG248 device in the
chain.
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Configuring Voice Mail Settings
Configuring Universal Voice Mail Settings
•
Async 2—setting should match the legacy PBX or the Async 1 of another
VG248 device.
Async 1 or 2 Parity
You can set the parity on the Async ports to: none (the default setting), even or
odd.
•
Async 1—setting should match the setting on the voice mail port of the
analog voice mail system or the Async 2 port of the next VG248 device in the
chain.
•
Async 2—setting should match the legacy PBX or the Async 1 of another
VG248 device.
Async 1 or 2 Stop Bits
You can set the number of stop bits being used for the serial connection of the
Async 1 or 2 port to be set to either 1 (the default value) or 2.
•
Async 1—setting should match the setting on the voice mail port of the
analog voice mail system or the Async 2 port of the next VG248 device in the
chain.
•
Async 2—setting should match the legacy PBX or the Async 1 of another
VG248 device.
Procedure
Follow these steps to modify the async port settings:
Step 1
From the main menu, choose Configure.
Step 2
Choose Voice mail.
Step 3
Choose Async port serial settings
Step 4
Choose one of the following and choose the appropriate setting:
•
Async port speed
•
Async 1 data bits
•
Async 1 parity
•
Async 1 stop bits
•
Async 2 data bits
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Configuring Voice Mail Settings
Configuring SMDI Settings
•
Async 2 parity
•
Async 2 stop bits
Configuring SMDI Settings
These sections provide information about configuring settings on the VG248 to
support analog voice mail systems using SMDI:
•
Assigning the Message Desk Number, page 4-12
•
Setting Voice Mail Number Length, page 4-13
•
Allowing Voice Mail Number to be Truncated, page 4-14
•
Forwarding INV Responses to Async 1, page 4-14
•
Entering a Keep Alive Number, page 4-15
•
Configuring Disconnect Notification, page 4-16
Assigning the Message Desk Number
Typically, a voice mail system is configured with a single Message Desk Number
(normally 1), and incoming SMDI messages are required to use this value for
proper operation. You need to set the message desk number on the VG248 to
match the value used by the voice mail system.
Before You Begin
If you are using the chained configuration all devices in the SMDI chain should
use the same message desk number.
Procedure
To choose the message desk number, follow these steps:
Step 1
From the main menu, choose Configure.
Step 2
Choose Voice mail.
Step 3
Choose SMDI settings.
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Configuring SMDI Settings
Step 4
Choose Message desk number.
Step 5
Enter the message desk value used by your voice mail system.
Setting Voice Mail Number Length
Traditional SMDI includes caller and called party information as 7-digit numbers.
If the number is shorter than 7 digits, extra digits (typically zeros) are added to
the left. For example, the extension number “12345” becomes “0012345” when
sent via SMDI. However, because 7 digits are not enough for external caller ID,
an extended SMDI format is available that uses 10-digit numbers.
Most voice mail systems are flexible, supporting either SMDI format. However,
some older systems insist on receiving exactly seven digits. Check the voice mail
system’s documentation to determine which setting is most appropriate.
You can set the VG248 to output using either using any value from 2-10 digit
numbers. It should match the value required by your voice mail system. You can
also set the number length to <unpadded>., which indicates that the voice mail
box numbers are always passed unmodified between Cisco CallManager and the
analog voice mail system.
Procedure
Follow these steps to change the voice mail number length:
Step 1
From the main menu, choose Configure.
Step 2
Choose Voice mail.
Step 3
Choose SMDI settings.
Step 4
Choose Voice mail number length.
Step 5
Choose one of the available options, ranging from 2-10 or <unpadded>.
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Configuring Voice Mail Settings
Configuring SMDI Settings
Allowing Voice Mail Number to be Truncated
If SMDI extension numbers are longer than the specified Voice mail number
length, the VG248 can either pass on the entire number or truncate the extension
number to the length you defined.
Most voice mail systems can accept longer numbers, but some systems insist on
an exact number of digits. Check which format your system supports before
selecting this option. If the Voice mail number length is set to <unpadded>, this
setting has no effect.
Procedure
Follow these steps to allow the voice mail number to be truncated:
Step 1
From the main menu, choose Configure.
Step 2
Choose Voice mail.
Step 3
Choose SMDI settings.
Step 4
Choose Truncate number if too long.
Step 5
Choose one of the following:
•
yes—to restrict the number length to 2 or 10 digits
•
no—to pass on the entire number
Forwarding INV Responses to Async 1
Some PBX systems generate an INV response to MWI commands from the voice
mail system if an error occurs. These INV responses are received on the Async 2
port of a VG248 attached to the PBX.
The VG248 cannot distinguish which extension numbers are connected to the
legacy PBX and which are connected to Cisco CallManager. Therefore, MWI
commands are sent to both systems. If the VG248 is connected to a legacy PBX
and Cisco CallManager (such as in the multiplexing configuration), the PBX is
likely to generate these error responses to commands it receives from the VG248.
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Configuring Voice Mail Settings
Configuring SMDI Settings
Procedure
Follow these steps to forward INV responses to Async 1:
Step 1
From the main menu, choose Configure.
Step 2
Choose Voice mail.
Step 3
Choose SMDI settings.
Step 4
Choose Forward INV responses to Async 1.
Step 5
Choose one of the following:
•
yes—errors generated by the PBX are sent to the voice mail system.
•
no—default setting
Entering a Keep Alive Number
Some voice mail systems use a Keep alive number to determine whether or not
the SMDI connection is active. The voice mail system sends out a test MWI
operation for this voice mail box number and expects to receive a negative
response from the attached VG248.
You must configure the VG248 with this keep alive number so it distinguishes the
MWI commands on this number from those on a real extension number.
By default, this value is set to 5551212, which is a number commonly used for
this purpose by analog voice mail systems.
Procedure
To enter a keep alive number, follow these steps:
Step 1
From the main menu, choose Configure.
Step 2
Choose Voice mail.
Step 3
Choose SMDI settings.
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Configuring Voice Mail Settings
Configuring Settings for MCI Voice Mail
Step 4
Choose Keep alive number.
Step 5
Enter the extension number.
Configuring Disconnect Notification
When a remote party hangs up, the voice mail system should detect this so it can
hang up also, freeing the port for use by another caller. If this parameter is set to
yes, the VG248 sends an additional SMDI message to the voice mail system when
a call into it has finished. This message is not part of the SMDI standard. By
default, this option is set to no.
Procedure
To configure the disconnect notification, follow these steps:
Step 1
From the main menu, choose Configure.
Step 2
Choose Voice mail.
Step 3
Choose SMDI settings.
Step 4
Choose Disconnect notification.
Step 5
Choose one of the following:
•
yes
•
no
Configuring Settings for MCI Voice Mail
These sections provide information about configuring settings on the VG248 to
support analog voice mail systems compatible with the MCI voice mail protocol:
•
Entering the System Address, page 4-17
•
Identifying the Tenant Number, page 4-17
•
Choosing the Entry Index, page 4-18
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Configuring Voice Mail Settings
Configuring Settings for MCI Voice Mail
Entering the System Address
Ensure that this value matches the setting required by your voice mail system.
Procedure
Step 1
From the main menu, choose Configure.
Step 2
Choose Voice mail.
Step 3
Choose MCI settings.
Step 4
Choose System address.
Step 5
Choose one of the following options:
•
0
•
1
Identifying the Tenant Number
Ensure that this value matches the setting required by your voice mail system.
Procedure
Step 1
From the main menu, choose Configure.
Step 2
Choose Voice mail.
Step 3
Choose MCI settings.
Step 4
Choose Tenant number.
Step 5
Enter a value from 0 to 99.
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Configuring Voice Mail Settings
Configuring Settings for Ericsson Voice Mail
Choosing the Entry Index
Ensure that this value matches the setting required by your voice mail system.
Procedure
Step 1
From the main menu, choose Configure.
Step 2
Choose Voice mail.
Step 3
Choose MCI settings.
Step 4
Choose Entry index.
Step 5
Choose a value from A to Z.
Configuring Settings for Ericsson Voice Mail
These sections provide information about configuring settings on the VG248 to
support analog voice mail systems compatible with the Ericsson voice mail
protocol:
•
Choosing the Mode, page 4-18
•
Setting the Extension Number Length, page 4-19
•
Choosing the Port Number Length, page 4-19
Choosing the Mode
The mode determines the level of features provided by the voice mail system.
Procedure
To configure this setting on the VG248, follow these steps:
Step 1
From the main menu, choose Configure.
Step 2
Choose Voice mail.
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Configuring Settings for Ericsson Voice Mail
Step 3
Choose Ericsson settings.
Step 4
Choose one of the following options:
•
standard
•
extended
•
extended level 2
•
extended level 3
Setting the Extension Number Length
Extension number length is the length of directory numbers configured on the
voice mail system.
Procedure
Step 1
From the main menu, choose Configure.
Step 2
Choose Voice mail.
Step 3
Choose Ericsson settings.
Step 4
Choose Extension Number Length
Step 5
Choose one of the available options, ranging from 2-10 or <unpadded>.
Choosing the Port Number Length
If you have a 100 or more voice mail ports, you might need to increase the port
number length above the default setting, which is 2.
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Configuring Voice Mail Settings
Configuring Settings for Ericsson Voice Mail
Procedure
Follow these steps to configure this setting on the VG248:
Step 1
From the main menu, choose Configure.
Step 2
Choose Voice mail.
Step 3
Choose Ericsson settings.
Step 4
Choose Port number length.
Step 5
Choose one of the available options, ranging from 2-5.
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5
Configuring VG248 Ports Using
Cisco CallManager
The VG248 connects to Cisco CallManager to provide access from the analog
phones to Cisco CallManager or from Cisco IP Phones to an analog voice mail
system. Each port on the VG248 corresponds to an analog device or voice mail
port in your IP telephony network. To manage these devices and voice mail ports
using Cisco CallManager you must add the VG248 to the Cisco CallManager
database and configure the individual ports, which are managed as phones by
Cisco CallManager.
These sections provide information about adding and configuring the VG248 and
its ports to Cisco CallManager, but for detailed installation and configuration
instructions about Cisco CallManager, refer to the documentation and online help
included with it:
•
Adding the VG248 to Cisco CallManager, page 5-1
•
Configuring Analog Phone Ports, page 5-7
•
Configuring Voice Mail Ports, page 5-7
Adding the VG248 to Cisco CallManager
Cisco CallManager enables you to automatically register the VG248 and its ports
or manually add them to the Cisco CallManager database. You can choose
whichever method works best in your environment.
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Configuring VG248 Ports Using Cisco CallManager
Adding the VG248 to Cisco CallManager
These sections provide the details about using auto-registration or manually
adding the VG248 and its ports to Cisco CallManager:
•
Using Auto-Registration, page 5-2
•
Manually Adding the VG248 Cisco CallManager, page 5-5
Using Auto-Registration
You can choose to have the VG248 automatically added to Cisco CallManager
using auto-registration. To do this, you must
•
Verify that auto-registration is enabled in Cisco CallManager. Refer to the
documentation or online help included with the Cisco CallManager
application for details.
•
If you are using the VG248 with analog phones, verify that the VG248 port
enable policy is set to “auto.” See the “Setting the Port Enable Policy” section
on page 3-5 for details.
•
If you are using the VG248 with analog voice mail systems, you should
enable the voice mail ports to enable them to register with
Cisco CallManager. See the “Enabling a Specific Port” section on page 3-8
for details.
The procedures differ slightly depending on the version of Cisco CallManager
you are using in your network. Be sure to refer to the applicable set of
instructions.
Auto-Registering with Cisco CallManager 3.1
When the VG248 connects to Cisco CallManager 3.1 using auto-registration,
each enabled port attempts to register with Cisco CallManager.
Cisco CallManager first determines if the port has previously registered or
verifies that the port can register using auto-registration. Then,
Cisco CallManager adds the port to its database.
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Configuring VG248 Ports Using Cisco CallManager
Adding the VG248 to Cisco CallManager
Phone Port
During auto-registration, the following fields are automatically populated for the
VGC phone record for each port on the VG248:
•
MAC address—Cisco CallManager requires unique MAC addresses for all
devices, but all 48 ports on the VG248 share the same MAC address.
Therefore, auto-registration includes a process that converts the MAC
addresses into this format:
– The first two digits of the MAC address are dropped.
– The number is shifted two places to the left.
– The two-digit port number is added to the right.
For example, if the MAC address on the VG248 is
000039A44218
the MAC address registered for port 12 in Cisco CallManager is
0039A4421812
•
Description—The Cisco CallManager device name assigned to the VG248
(see the “Changing the Cisco CallManager Device Name” section on
page 3-2) is entered in the Description field in the record for the emulated
phone in Cisco CallManager. By default, the following sequence applies for
the device description: VGC + the last 10 digits of the MAC address.
•
Directory number—The directory number assigned is the next one available
in sequential order within the device pool assigned to this phone type in
Cisco CallManager. However, if you need to, you can modify this directory
number for each emulated phone or voice mail port (see the “Configuring
Analog Phone Ports” section on page 5-7 or the “Configuring Voice Mail
Ports” section on page 5-7).
After adding each port, make configuration changes as described in the
“Configuring Analog Phone Ports” section on page 5-7 or the “Configuring Voice
Mail Ports” section on page 5-7.
Auto-Registering with Cisco CallManager 3.2 or 3.3
When the VG248 connects to Cisco CallManager 3.2 or 3.3 using
auto-registration, each enabled port attempts to register with Cisco CallManager.
Cisco CallManager first determines if the port has previously registered or
verifies that the port can register using auto-registration.
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Configuring VG248 Ports Using Cisco CallManager
Adding the VG248 to Cisco CallManager
Cisco CallManager then determines if the VG248 gateway to which the port is
connected already exists in the Cisco CallManager database. If it does not,
Cisco CallManager first creates the VG248 gateway and then registers the port.
Gateway Device
During auto-registration the following fields are automatically populated for the
VG248 gateway record:
•
MAC address—Only the last 10 digits of the MAC address are populated.
For example, if the MAC address on the VG248 is
000039A44218
the MAC address registered for the VG248 gateway in
Cisco CallManager is
0039A44218
•
Description—The prefix, VGCGW, is appended to the MAC address.
For example, if the MAC address on the VG248 is
000039A44218
the MAC address registered for the VG248 gateway in
Cisco CallManager is
VGCGW0039A44218
Phone Port
During auto-registration, the following fields are automatically populated for the
VGC phone record for each port on the VG248:
•
MAC address—Cisco CallManager requires unique MAC addresses for all
devices, but all 48 ports on the VG248 share the same MAC address.
Therefore, auto-registration includes a process that converts the MAC
addresses into this format:
– The first two digits of the MAC address are dropped.
– The number is shifted two places to the left.
– The two-digit port number is added to the right.
For example, if the MAC address on the VG248 is
000039A44218
the MAC address registered for port 12 in Cisco CallManager is
0039A4421812
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Configuring VG248 Ports Using Cisco CallManager
Adding the VG248 to Cisco CallManager
•
Description—The Cisco CallManager device name assigned to the VG248
(see the “Changing the Cisco CallManager Device Name” section on
page 3-2) is entered in the Description field in the record for the emulated
phone in Cisco CallManager. By default, the following sequence applies for
the device description: VGC + the last 10 digits of the MAC address.
•
Directory number—The directory number assigned is the next one available
in sequential order within the device pool assigned to this phone type in
Cisco CallManager. However, if you need to, you can modify this directory
number for each emulated phone or voice mail port (see the “Configuring
Analog Phone Ports” section on page 5-7 or the “Configuring Voice Mail
Ports” section on page 5-7).
After adding each port, make configuration changes as described in the
“Configuring Analog Phone Ports” section on page 5-7 or the “Configuring Voice
Mail Ports” section on page 5-7.
Manually Adding the VG248 Cisco CallManager
If you want to assign specific directory numbers to the ports on the VG248
without using auto-registration or make considerable modifications to them,
particularly with voice mail integration, you must manually add each phone to the
Cisco CallManager database. The procedures differ slightly depending on the
version of Cisco CallManager you are using in your network. Be sure to refer to
the applicable set of instructions.
Manually Registering with Cisco CallManager 3.1
Procedure
To add a VG248 port to Cisco CallManager, follow these steps:
Step 1
From Cisco CallManager, choose Devices > Add a New Device.
Step 2
Choose Cisco VGC Phone from the Phone type menu.
Step 3
Click Next and enter these fields:
•
MAC address—Each port must have a unique MAC address. Use the
auto-registration formula (see the “Auto-Registering with Cisco CallManager
3.1” section on page 5-2) to calculate the MAC address for each port.
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Configuring VG248 Ports Using Cisco CallManager
Adding the VG248 to Cisco CallManager
Step 4
•
Description—Use the Cisco CallManager device name or other name for the
Description for each port (see “Changing the Cisco CallManager Device
Name” section on page 3-2). For ease of administration, use a similar name
for ports configured on the same VG248.
•
Display—Consider adding a descriptive line to the Display field, such as
“Analog phone” or “Voice Mail Port”, particularly if you are using a mix of
analog or voice mail ports on the VG248. Cisco CallManager does not
distinguish between these two types of VGC phone types, and this description
can help you quickly see which ports are used for analog devices and which
are used for voice mail
Configure each port as described in the “Configuring Analog Phone Ports” section
on page 5-7 or “Configuring Voice Mail Ports” section on page 5-7.
Manually Registering with Cisco CallManager 3.2 or 3.3
With Cisco CallManager 3.2 or 3.3, you add the VG248 first as a gateway and
then you configure each of the ports individually as VGC phones.
Procedure
To add the VG248 to Cisco CallManager, follow these steps:
Step 1
From Cisco CallManager, choose Devices > Add a New Device.
Step 2
Choose Gateway from the device type menu.
Step 3
Choose Cisco VG248 Gateway from the Gateway type menu.
Step 4
Click Next and enter these fields:
•
MAC address—Enter the last 10 digits of the MAC address of the VG248
device. For details, see the “Auto-Registering with Cisco CallManager 3.2 or
3.3” section on page 5-3.
•
Description—Add a prefix or other identifier to the MAC address and enter it
here. See the “Auto-Registering with Cisco CallManager 3.2 or 3.3” section
on page 5-3 for an example.
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Configuring VG248 Ports Using Cisco CallManager
Configuring Analog Phone Ports
Step 5
Configure each port as described in the “Configuring Analog Phone Ports” section
on page 5-7 or “Configuring Voice Mail Ports” section on page 5-7.
Configuring Analog Phone Ports
Configuring the analog phone ports is very straight-forward. After the ports are
added to the database (see the “Adding the VG248 to Cisco CallManager” section
on page 5-1), you simply treat them as you would any other phone in your IP
telephony network. For example, you need to add directory numbers, calling
search space, and so on. Refer to the documentation and online help included with
Cisco CallManager for details. To update these ports:
•
Cisco CallManager 3.1—From Cisco CallManager, choose Device > Phone
to search for all registered VGC phones to update them.
•
Cisco CallManager 3.2 and 3.3—From Cisco CallManager, choose Device >
Gateway to search for the VG248 gateway. Click on any of the ports from
01-48 to update them.
Note
Using Cisco CallManager 3.2 or 3.3, do not enter any values in the
Port Specific fields of the Phone Configuration window. These fields
are not operational using the VG248 1.2(1) software. You must
configure these settings locally on the VG248. See the Chapter 3,
“Configuring the Telephony Settings on the VG248” for details.
Configuring Voice Mail Ports
When using the VG248 to integrate SMDI, MCI, or Ericsson-compatible analog
voice mail systems with Cisco CallManager, you must make changes to
Cisco CallManager to support the VG248 and the end-user phones that will use
this voice mail system.
These sections provide details about the necessary changes:
•
Configuring the Voice Mail Hunt Group in Cisco CallManager, page 5-8
•
Configuring the MWI Port Using Cisco CallManager, page 5-14
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Configuring VG248 Ports Using Cisco CallManager
Configuring Voice Mail Ports
•
Configuring Voice Mail Ports in Cisco CallManager, page 5-15
•
Configuring End-User Phones, page 5-18
Configuring the Voice Mail Hunt Group in Cisco CallManager
You must configure several settings in Cisco CallManager to ensure that the voice
mail hunt group is set up properly for the VG248. You must configure these
settings for each Cisco CallManager system in a cluster, and you must stop and
restart Cisco CallManager after making these changes. Refer to the instructions
specific to the version of Cisco CallManager that you are using with the VG248.
Setting Up the Voice Mail Hunt Group Using Cisco CallManager 3.1
You need to update some of the Cisco CallManager service parameters to support
the analog voice mail systems and the VG248.
Procedure
Step 1
From Cisco CallManager, choose Service > Service Parameters.
Step 2
From the Server drop-down list box, choose a server.
Step 3
From the Services list, choose Cisco CallManager.
Step 4
Enter the settings described in Table 5-1.
Step 5
Click Update.
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Configuring VG248 Ports Using Cisco CallManager
Configuring Voice Mail Ports
Table 5-1
Voice Mail Service Parameter Settings
Field
Description
VoiceMail
Enter the number users use to access their voice mail messages. This
number should correspond to the directory number of the first voice
mail port (see the “Configuring Voice Mail Ports in
Cisco CallManager” section on page 5-15) and the pilot directory
number entered on the VG248 (see the “Identifying the Pilot
Directory Number” section on page 4-4).
If you are connecting multiple VG248 systems to more than one
voice mail system, you have multiple hunt groups. These hunt
groups require different voice mail access numbers. For efficiency,
enter the directory number of the largest hunt group as the
VoiceMail parameter and ensure that the
AdvancedCallForwardHopFlag is set to true.
Note
The directory number entered in the VoiceMail parameter
should correspond to the directory number assigned to the
first voice mail port.
AdvancedCallForwardHopFlag
Set to true.
VoiceMailMaximumHopCount
Set this value to be at least as high as number of voice mail ports
accessible through the hunt group accessed from the VoiceMail
pilot number.
MultiTenantMWIMode
Set this flag to True, if you want Cisco CallManager to use
translation patterns to convert voice message box numbers into
directory numbers when your voice mail system issues a command
to set a message waiting indicator.
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Configuring VG248 Ports Using Cisco CallManager
Configuring Voice Mail Ports
Table 5-1
Voice Mail Service Parameter Settings (continued)
Field
Description
Forward Maximum Hop Count
You can specify the number of times Cisco CallManager forwards a
call before generating an error tone. The default setting is 12, but
you should set it to a number larger than the number of extensions
in the largest hunt group.
If you have more than one voice mail system then this parameter
should be larger than the second largest voice mail hunt group. The
the longest should be controlled by VoiceMailMaximumHopCount.
ForwardNoAnswerTimeout
The no-answer time-out setting determines how much time is spent
contacting a directory number before forwarding to voice mail. You
can specify the number of seconds allowed before the system
determines that a call to an extension forwarded to the voice mail
system.
Setting Up the Voice Mail Hunt Group Using Cisco CallManager 3.2 and 3.3
On Cisco CallManager 3.2 and 3.3, you must configure some service parameters,
but you must also configure the voice mail port and voice mail profile. These
sections provide an overview of these steps:
•
Configuring Voice Mail Service Parameters Using Cisco CallManager 3.2
and 3.3, page 5-10
•
Creating the Pilot Port for the Voice Mail Hunt Group Using
Cisco CallManager 3.2 and 3.3, page 5-12
•
Creating Voice Mail Profile for the Voice Mail Hunt Group Using
Cisco CallManager 3.2 and 3.3, page 5-13
Configuring Voice Mail Service Parameters Using Cisco CallManager 3.2 and 3.3
Procedure
Follow these steps to configure the voice mail service parameters on
Cisco CallManager 3.2 and 3.3:
Step 1
From Cisco CallManager, choose Service > Service Parameters.
Step 2
From the Server drop-down list box, choose a server.
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Configuring Voice Mail Ports
Table 5-2
Step 3
From the Services list, choose Cisco CallManager.
Step 4
Enter the settings described in Table 5-2 or Table 5-3, depending on your
Cisco CallManager version.
Step 5
Click Update.
Cisco CallManager 3.2 Voice Mail Hunt Group Settings
Field
Description
Forward Maximum Hop Count
You can specify the number of times Cisco CallManager forwards a
call before generating an error tone. The default setting is 12, but
you should set it to a number larger than the number of extensions
in the largest hunt group.
If you have more than one voice mail system then this parameter
should be larger than the second largest voice mail hunt group. The
the longest should be controlled by VoiceMailMaximumHopCount.
Forward No Answer Timeout
The no-answer time-out setting determines how much time is spent
contacting a directory number before forwarding to voice mail.
Specify the number of seconds allowed before the system
determines that a call to an extension forwarded to the voice mail
system.
VoiceMailMaximumHopCount
Set this value to be at least as high as number of voice mail ports
accessible through the hunt group accessed from the VoiceMail
pilot number.
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Configuring VG248 Ports Using Cisco CallManager
Configuring Voice Mail Ports
Table 5-3
Cisco CallManager 3.2 and 3.3 Voice Mail Hunt Group Settings
Section
Field
Cluster Wide
Forward Maximum
Parameters
Hop Count
(Feature - Forward)
Description
You can specify the number of times Cisco CallManager
forwards a call before generating an error tone. The
default setting is 12, but you should set it to a number
larger than the number of extensions in the largest hunt
group.
If you have more than one voice mail system then this
parameter should be larger than the second largest voice
mail hunt group. The the longest should be controlled by
VoiceMailMaximumHopCount.
Cluster Wide
Forward NoAnswer
Parameters
Timer
(Feature - Forward)
The no-answer timer setting determines how much time
is spent contacting a directory number before forwarding
to voice mail. You can specify the number of seconds
allowed before the system determines that a call to an
extension forwarded to the voice mail system.
Cluster Wide
VoiceMail Maximum
Hop Count
Parameters
(Feature - General)
Set this value to be at least as high as number of voice
mail ports accessible through the hunt group accessed
from the VoiceMail pilot number.
Creating the Pilot Port for the Voice Mail Hunt Group Using Cisco CallManager 3.2 and 3.3
You need to create the voice mail pilot number, which is the number users enter
to access their voice mail messages. This number should correspond to the
directory number of the first voice mail port (see the “Configuring Voice Mail
Ports in Cisco CallManager” section on page 5-15) and the pilot directory number
entered on the VG248 (see the “Identifying the Pilot Directory Number” section
on page 4-4).
Procedure
Follow these steps to create the voice mail pilot port:
Step 1
From Cisco CallManager, choose Feature > Voice Mail >Voice Mail Pilot.
Step 2
Enter the number of the first port on the VG248 in the Voice Mail Pilot Number
field.
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Configuring Voice Mail Ports
Note
This number should correspond to the directory number of the first voice
mail port (see the “Configuring Voice Mail Ports in Cisco CallManager”
section on page 5-15) and the pilot directory number entered on the
VG248 (see the “Identifying the Pilot Directory Number” section on
page 4-4).
Step 3
Enter any other optional fields.
Step 4
Click Insert.
Creating Voice Mail Profile for the Voice Mail Hunt Group Using Cisco CallManager 3.2 and 3.3
The voice mail profile enables you to assign a user a different mail box number
than their extension number. So, if users have an extension that is a different
number than their voice mail box, they can still access their voice mail using the
pilot directory number.
Procedure
Step 1
From Cisco CallManager, choose Feature > Voice Mail >Voice Mail Profile
Step 2
Click Add a New Voice Mail Profile.
Step 3
Enter the minimum information:
Step 4
•
Profile name
•
Voice Mail Pilot box—choose the pilot port you just added (see “Creating the
Pilot Port for the Voice Mail Hunt Group Using Cisco CallManager 3.2 and
3.3” section on page 5-12).
Click Insert.
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Configuring VG248 Ports Using Cisco CallManager
Configuring Voice Mail Ports
Configuring the MWI Port Using Cisco CallManager
When used with these analog voice mail systems, the VG248 requires an extra
port registered with Cisco CallManager. The VG248 uses this port when setting
or clearing MWIs on phones. On the VG248, this port is defined as port 00 and
referred to as the “Voice mail virtual port” on the port status screen (see
“Displaying Port Status” section on page 6-24 for details).
Refer to the instructions specific to the version of Cisco CallManager that you are
using with the VG248.
Configuring the MWI Port Using Cisco CallManager 3.1
To add the MWI port (port 00) to Cisco CallManager 3.1, follow the instructions
for adding ports to Cisco CallManager as described in the “Auto-Registering with
Cisco CallManager 3.1” section on page 5-2 or the “Manually Registering with
Cisco CallManager 3.1” section on page 5-5.
In addition to the procedures described in those sections, you must also make the
following modifications to port 00:
•
Make sure that the MAC address denotes that this is port 00.
•
Ensure that this port is configured within Cisco CallManager to have a unique
directory number. If this port does not have a directory number, the VG248 is
unable to set or clear message waiting indicators.
•
Choose a Calling Search space that enables this MWI port to access all
phones on which it might need to set or clear MWI commands.
Configuring the MWI Port Using Cisco CallManager 3.2 and 3.3
To make additional modifications to port 00 after registering it with
Cisco CallManager, follow these steps:
Procedure
Step 1
From Cisco CallManager, choose Device > Gateway to search for the VG248
gateway.
Step 2
Click on Port 00.
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Configuring Voice Mail Ports
Step 3
Enter these fields:
•
MAC address—Each port must have a unique MAC address. Use the
auto-registration formula (see the “Auto-Registering with Cisco CallManager
3.2 or 3.3” section on page 5-3) to calculate the MAC address for each port.
•
Description—Use the Cisco CallManager device name or other name for the
Description for each port (see “Changing the Cisco CallManager Device
Name” section on page 3-2). For ease of administration, use a similar name
for ports configured on the same VG248.
•
Display—Consider adding a descriptive line to the Display field, such as
“Analog phone” or “Voice Mail Port”, particularly if you are using a mix of
analog or voice mail ports on the VG248.
•
Calling Search Space—Choose a Calling Search space that enables this MWI
port to access all phones on which it might need to set or clear MWI
commands.
•
Directory number—Assign a unique directory number. If this port does not
have a directory number, the VG248 cannot set or clear message waiting
indicators.
Configuring Voice Mail Ports in Cisco CallManager
Using Cisco CallManager, you must add and configure each of the ports on the
VG248 that are voice mail-enabled. To Cisco CallManager, each port is
recognized and managed as a phone with the VGC phone type. So, if you have 10
ports on the VG248 that are voice mail-enabled, you need to add these 10 VGC
phones (or ports) to Cisco CallManager.
Note
If you plan to use the remaining 38 ports on the VG248 for analog devices, refer
to the “Configuring Analog Phone Ports” section on page 5-7 for instructions.
Cisco CallManager enables you to automatically register the ports from the
VG248 or manually add them to the Cisco CallManager database (see the“Adding
the VG248 to Cisco CallManager” section on page 5-1). After the ports are
registered with Cisco CallManager, you can modify their settings.
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Configuring VG248 Ports Using Cisco CallManager
Configuring Voice Mail Ports
Configuring the VG248
You must identify the number of voice mail ports locally on the VG248.
Procedure
Step 1
On the VG248, choose Configure > Voice mail> Number of voice mail ports to
set the number ports used for voice mail.
See the “Assigning Number of Voice Mail Ports” section on page 4-5 for details.
Step 2
Choose Configure > Telephony > Port specific parameters. Ensure that ports
from1 to the value set in Number of voice mail ports are enabled.
See the “Enabling a Specific Port” section on page 3-8 for details.
Step 3
Choose Display > Port Status to verify that these voice mail ports are
up-and-running.
See the “Displaying Port Status” section on page 6-24 for details.
Configuring Voice Mail Ports Using Cisco CallManager 3.1
To configure a VG248 voice mail port to Cisco CallManager 3.1, follow these
steps.
Procedure
Step 1
Add the port to Cisco CallManager as described in the “Auto-Registering with
Cisco CallManager 3.1” section on page 5-2 or the “Manually Registering with
Cisco CallManager 3.1” section on page 5-5.
Step 2
In the Directory Numbers list, click an unassigned line.
Step 3
Enter the settings described in Table 5-4
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Configuring VG248 Ports Using Cisco CallManager
Configuring Voice Mail Ports
Table 5-4
Voice Mail Port Configuration Settings
Field
Description
Directory Number
Enter the directory number for this voice mail port. The first port
must be assigned the directory number identified as the pilot
directory number on the VG248 (see the “Identifying the First Voice
Mail Port Number” section on page 4-5) and defined as the
VoiceMail number in Service > Service Parameters in
Cisco CallManager. For ease of managing these ports, assign
consecutive directory numbers to the remaining voice mail ports.
Call Waiting
Set this to Off to disable it on each of the voice mail ports.
Forward Busy
Enter the directory number for the next VG248 voice mail port on
the voice mail chain. For example, if the directory number for this
port is 75001, enter 75002 to forward to the next available port.
Forward No Answer
Enter the directory number for the next VG248 voice mail port on
the voice mail chain. For example, if the directory number for this
port is 75001, enter 75002 to forward to the next available port.
Step 4
Click Update.
Configuring Voice Mail Ports Using Cisco CallManager 3.2 or 3.3
To configure a VG248 voice mail port to Cisco CallManager 3.2 or 3.3, follow
these steps after registering the port (see the “Auto-Registering with
Cisco CallManager 3.2 or 3.3” section on page 5-3 or the “Manually Registering
with Cisco CallManager 3.2 or 3.3” section on page 5-6.).
Procedure
Step 1
From Cisco CallManager, choose Device > Gateway to search for the VG248
gateway.
Step 2
Click on any port being assigned as a voice mail port, from 01-48.
Step 3
In the Directory Numbers list, click an unassigned line.
Step 4
Enter the settings described in Table 5-4
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Configuring VG248 Ports Using Cisco CallManager
Configuring Voice Mail Ports
Note
If you are using Cisco CallManager 3.2 or 3.3, do not enter any values in
the Port Specific fields of the Phone Configuration window. These fields
are not operational using the VG248 1.2 software. You must configure
these settings locally on the VG248. See the Chapter 3, “Configuring the
Telephony Settings on the VG248” for details.
Configuring End-User Phones
You need to modify some settings on the end-user phones in Cisco CallManager
to enable them to access the analog voice mail systems.
Before You Begin
You should modify these settings on any Cisco IP Phones and on any analog
phones connected to the VG248 that require access to this voice mail system.
The following steps require that these phones have already been added to the
Cisco CallManager database. If you need assistance adding an analog phone or a
Cisco IP Phone, see the “Adding the VG248 to Cisco CallManager” section on
page 5-1 and the online help and documentation included with
Cisco CallManager.
Procedure
Step 1
From Cisco CallManager, choose Device > Phone.
Step 2
Enter search criteria to locate a specific phone, which could be a Cisco IP Phone
or an analog phone attached to another port on the VG248.
Step 3
Click the name of the phone to update.
Step 4
From the Directory Numbers list, click the line that you want to update.
Step 5
Update the settings described in Table 5-5.
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Configuring Voice Mail Ports
Table 5-5
End-User Phone Voice Mail Configuration Settings
Field
Description
Voice Message Box
Enter the voice mailbox that you want to associate with this line.
When a call is forwarded to voice mail, Cisco CallManager sends
the number that you enter here to your voice-mail application. The
voice-mail system then leaves voice-mail messages in the
configured mailbox.
Forward Busy
Enter the directory number for the first VG248 voice mail port. This
forwards the call to voice mail. This number should match the
number entered for the Voicemail parameter in Cisco CallManager
(see Table 5-1).
Forward No Answer
Enter the directory number for the first VG248 voice mail port. This
forwards the call to voice mail. This number should match the
number entered for the Voicemail parameter in Cisco CallManager
(see Table 5-1).
Step 6
Click Update.
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Configuring VG248 Ports Using Cisco CallManager
Configuring Voice Mail Ports
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C H A P T E R
6
Troubleshooting the VG248
The VG248 includes several built-in troubleshooting and diagnostic features. Use
these sections for details about troubleshooting:
•
Troubleshooting Hardware Errors, page 6-1
•
Troubleshooting Software Errors, page 6-5
•
Upgrading or Restoring Software Images, page 6-16
•
Verifying Connectivity, page 6-20
•
Displaying Status and Configuration Settings, page 6-22
•
Monitoring System Status Remotely, page 6-31
•
Working with the Event Log, page 6-33
Troubleshooting Hardware Errors
The VG248 can identify some potential hardware problems with the fans, power
supplies, the operating temperature, and other hardware systems.
These sections provide information about how the VG248 identifies these
potential problems and how to resolve them:
•
Displaying Hardware Status, page 6-2
•
Identifying Fan Faults, page 6-3
•
Identifying Power Supply Faults, page 6-3
•
Monitoring Internal Operating Temperature, page 6-3
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Chapter 6
Troubleshooting the VG248
Troubleshooting Hardware Errors
•
Connecting Too Many Phones to the VG248, page 6-4
•
Resolving Additional Hardware Errors, page 6-5
Displaying Hardware Status
If potential hardware failures are detected, warning messages appear on the main
interface window. However, you can also proactively monitor the current
operating environment on the VG248.
Procedure
To do this, follow these steps:
Step 1
From the main screen, choose Diagnostics.
Step 2
Choose Show environment.
The following information about the VG248 displays:
•
Internal temperature
•
1.8 volts supply
•
3.3 volts supply
•
5.0 volts supply
•
12.0 volts supply
•
48.0 volts supply
•
96.0 volts supply
•
Chassis fan state
The voltages and temperatures are indicated with the actual values and “okay”,
“too high”, or “too low” annotating the values. The fan status is identified as
“okay” or “faulty”.
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Troubleshooting the VG248
Troubleshooting Hardware Errors
Identifying Fan Faults
If a fan fault is reported, it indicates that one (or more) of the fans is not
functioning. You should verify that nothing is lodged in the holes in the rear of the
device, but do not make any attempt to open the device or move the fans. You
should contact a technical support representative from Cisco Systems for
assistance.
Identifying Power Supply Faults
The internal DC supply voltages are measured continuously (+1.8v, +3.3v, +5.0v,
+12.0v, -48v, -96v).
The 1.8v and 3.3v voltages must be within +/- 6% of nominal, and the others must
be within +/- 10%. If any of these values are outside this range, then the VG248
reports a power supply fault.
If the phone power supplies (-48v and -96v) fail, it might indicate that the VG248
is overloaded. Verify that you have not exceeded the maximum ringer equivalency
number (REN) load for each line. You should only have a maximum REN load of
three (3). Because some devices might have a REN load greater than one (1), you
cannot necessarily connect three devices to the chain.
If one of the other power supplies fails, you should contact a Cisco technical
representative for assistance.
Monitoring Internal Operating Temperature
The VG248 monitors its internal temperature to ensure that it is operating within
the specified limits (the ambient operating environment should be 0° to 40° C or
32° to 104° F). If the VG248 identifies internal temperatures too low or too high,
it generates warning messages. Continuing to operate at ranges exceeding these
limits (either too low or too high) can damage the VG248.
If the operating temperature of the VG248 is too low, there is a risk of
condensation forming inside the device. You should move the device to a warmer
location to prevent this.
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Chapter 6
Troubleshooting the VG248
Troubleshooting Hardware Errors
If the operating temperature of the VG248 is too high, you should move the device
to a cooler location with improved ventilation. The internal fans on the VG248
maintain the internal temperature consistent with the ambient environment.
Therefore, if the device is in a location that is too warm, its internal temperature
is more likely to exceed the limits.
There are two levels of high temperature alert:
•
yellow alert—generates and logs an error, but enables the device to continue
functioning
•
red alert—causes all the phones to be immediately shut down, causing calls
to drop and preventing calls from being made. You must manually restart the
VG248 either by selecting Configure > Restart or by disconnecting power
from the device.
Connecting Too Many Phones to the VG248
The VG248 has a maximum ringer equivalency number (REN) load of three (3)
per line (using a shared directory number), and only two devices can be off-hook
at any one time. Because some devices might have a REN load greater than one
(1), you cannot necessarily connect three devices to the chain. If these
requirements are ignored, you might experience reduced quality on these analog
phones, including:
•
Difficulty hearing caller—Users have too many phones off-hook. Do not have
more than two phones per line off-hook simultaneously.
•
Dialing or caller ID on call waiting are not working properly—Users have too
many phones off-hook. Do not have more than two phones per line off-hook
simultaneously.
•
Phones not ringing properly or at all—REN load has been exceeded. Do not
exceed the REN of three (3) per line.
•
Phone power supplies (-48v and -96v) fail—REN load has been exceeded. Do
not exceed the REN of three (3) per line. See the “Identifying Power Supply
Faults” section on page 6-3 for additional information.
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Chapter 6
Troubleshooting the VG248
Troubleshooting Software Errors
Resolving Additional Hardware Errors
Table 6-1 describes errors and warnings that might appear on the VG248 either
on-screen or in the event log (see the “Working with the Event Log” section on
page 6-33 for details on accessing the event log) which are caused by a hardware
fault. Use this information to resolve these errors.
Table 6-1
Hardware Errors and Warnings Explanation
System
Error
Explanation
DSP
DSP X on SIM Y has
failed
DSP X, SIM Y
failed to boot
Ethernet has gone
down
One of the Digital Signal
Contact a Cisco technical
Processor (DSP) chips
representative for assistance.
inside the VG248 has failed.
Ethernet has gone down at
the physical level.
Verify that the Ethernet cable is
properly connected to the VG248 and
that the hub or switch to which it is
connected is up and running properly.
SCCP
Failed to update
real-time clock
The on-board real-time
clock in the VG248 has
failed to set the time from
Cisco CallManager.
Contact a Cisco technical
representative for assistance.
SLIC
EDSP failure
warning received
SLIC
Over-temperature
warning received
If these messages persist, contact a
Cisco technical representative for
assistance.
SLIC
PCM
synchronization
failure warning
received
A transient fault has been
detected in the SLICs (the
hardware that drives the
analog telephony
interfaces).
DSP
OS
Action
Troubleshooting Software Errors
The VG248 displays informational messages and errors on-screen or in the event
log (see the “Working with the Event Log” section on page 6-33 for details on
accessing the event log), which indicate potential software problems, such as
misconfiguration, time-outs, unreachable servers, and so on.
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Chapter 6
Troubleshooting the VG248
Troubleshooting Software Errors
The following sections provide details about resolving these errors:
•
Resolving Network and System Errors, page 6-6
•
Resolving Voice Mail Errors and Warnings, page 6-13
•
Resolving Analog Errors, page 6-13
•
Resolving Voice Mail Errors and Warnings, page 6-13
Resolving Network and System Errors
Table 6-2 describes errors and warnings that might appear on the VG248 either
on-screen or in the event log (see the “Working with the Event Log” section on
page 6-33 for details on accessing the event log), which are caused by a
misconfiguration or miscommunication with the network or system settings. Use
this information to resolve these errors.
Table 6-2
Network and System Errors and Warnings Explanation
System
Error
Explanation
Action
DHCP
Invalid TFTP
information
received from
DHCP server
Although the VG248
received TFTP
information from the
DHCP server, it was not
valid.
Check configuration of DHCP server. If
errors persist, assign a static IP address and
manually enter settings for the TFTP server.
Refer to the “Configuring Network
Settings” section on page 2-5 for details on
assigning a static IP address.
The VG248 might not
have enough
information to retrieve
telephony port
configuration or register
with
Cisco CallManager.
DHCP
IP address
cannot be
allocated
No DHCP server
responded to the
request.
Check configuration of DHCP server. If
errors persist, assign a static IP address.
Refer to the “Configuring Network
Settings” section on page 2-5 for details on
assigning a static IP address.
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Troubleshooting the VG248
Troubleshooting Software Errors
Table 6-2
Network and System Errors and Warnings Explanation (continued)
System
Error
Explanation
DHCP
IP address
conflict with
device
<address>
The DHCP server
allocated an IP address
to the VG248 that is
already in use by
another device on the
network.
Action
1.
Check your DHCP server configuration
to ensure that addresses allocated are
not reserved for static IP use.
2.
Check your network for misconfigured
devices.
DHCP
IP address
refused
The DHCP server
rejected the VG248’s
request for an IP
address.
DHCP
Network
interface will
be shut down
A previous error caused Check the event log for errors.
the network interface to
be shut down.
DHCP
Static IP
address
conflict with
device
<address>
The VG248 has a static
IP address that is
already assigned to
another device on the
network.
DNS
No response
from primary
server
The DNS server failed
to respond to one or
more requests from the
VG248.
DNS
Server address
not configured
A DNS query has been
attempted, but no DNS
server has been
configured.
Check configuration of DHCP server. If
errors persist, assign a static IP address.
Refer to the “Configuring Network
Settings” section on page 2-5 for details on
assigning a static IP address.
Assign a different static IP address for
either the VG248 or the conflicting device.
Refer to the “Configuring Network
Settings” section on page 2-5 for details on
assigning a static IP address.
1.
If the VG248 has a static IP address,
verify the DNS server has been
configured. Refer to the “Setting the
DNS Server” section on page 2-10 for
details.
2.
Verify that the DNS server is working
properly.
1.
If the VG248 has a static IP address,
verify the DNS server has been
configured. Refer to the “Setting the
DNS Server” section on page 2-10 for
details.
2.
If you are using DHCP, the DHCP
server has not provided a DNS server.
Check the DHCP server configuration.
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Chapter 6
Troubleshooting the VG248
Troubleshooting Software Errors
Table 6-2
Network and System Errors and Warnings Explanation (continued)
System
Error
Explanation
Action
DSP
DTMF tone
transmit buffer
overflow
There is a finite number No action is required. If this situation
of DTMF tones that can occurs, the warning appears indicating that
some tones have been discarded.
be queued up to be
played through the
VG248’s analog ports.
Each of these tones
takes about 200
milliseconds to be
played, and the
instructions to play
these tones might arrive
much faster via the
Ethernet interface.
Thus, the VG248 might
not be able to store all
the tones that need to be
played.
DSP
DTMF tone
transmit buffer
reactivated
The overflow condition No action is required. This message is
has ceased and DTMF informational only.
tones are being sent to
the attached analog
device.
FTP
Invalid
password
entered
An attempt was made to
connect to the VG248
via FTP with the wrong
password.
Verify that you have entered the password
for the highest level of security currently
set. When using FTP, if you have both a
login and an enable password set, you must
use the enable password.
Refer to the “Configuring Passwords”
section on page 2-13 for details.
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Troubleshooting the VG248
Troubleshooting Software Errors
Table 6-2
Network and System Errors and Warnings Explanation (continued)
System
Error
Explanation
Action
FTP
Partial
download
aborted
An attempt to download Reattempt the file transfer.
a file onto the VG248
was interrupted before
the entire file was
transferred.
The resulting partial file
has been deleted from
the filing system on the
VG248.
FTP
Required
An attempt was made to
password absent connect to the VG248
When using FTP, if you have both a login
and an enable password set, you must use
the enable password.
via FTP without a
password when one was
Refer to the “Configuring Passwords”
required.
section on page 2-13 for details.
OS
Ethernet failed
to restart
OS
Ethernet failed
to start
OS
Incorrect
password
entered
The Ethernet cable is
not properly connected
to the VG248 or to the
hub or switch.
Check the Ethernet cable and reconnect it to
the VG248 and the hub or switch. If error
persists, replace cable.
A user attempted to use
a telnet, console, or FTP
connection to the
VG248 but entered an
incorrect password.
Check the passwords and verify that you are
using the correct one.
Change the password if you suspect an
unauthorized login attempt. Refer to the
“Configuring Passwords” section on
page 2-13 for details.
SNMP
Attempt to use
Get with
invalid
community name
“<name>”
The VG248 received an
SNMP request with an
invalid read-only
community name
(password).
Check the community string setting on the
VG248 and ensure that your network
management system has the correct
password. Refer to the “Configuring SNMP
Settings” section on page 2-14 for details.
SNMP
Attempt to use
Set with
invalid
community name
“<name>”
The VG248 received an
SNMP request with an
invalid read-write
community name
(password).
Check the community string setting on the
VG248 and ensure that your network
management system has the correct
password. Refer to the “Configuring SNMP
Settings” section on page 2-14 for details.
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Chapter 6
Troubleshooting the VG248
Troubleshooting Software Errors
Table 6-2
Network and System Errors and Warnings Explanation (continued)
System
Error
Explanation
Action
SNMP
Received
invalid packet
The SNMP server
received an invalid
SNMP request.
Verify that your network management
system is set up properly.
TFTP
TFTP
TFTP: Rx error
Timeout
The VG248 is unable to These errors might occur if the network is
retrieve a file using
busy. The errors should resolve themselves
TFTP.
when the network load reduces.
Resolving Cisco CallManager Errors
Table 6-3 describes errors and warnings that might appear on the VG248 either
on-screen or in the event log (see the “Working with the Event Log” section on
page 6-33 for details on accessing the event log), which are caused by a
misconfiguration or miscommunication with the Cisco CallManager system. Use
this information to resolve these errors.
Table 6-3
Cisco CallManager Errors and Warnings Explanation
System
Error
Explanation
Action
SCCP
Attempt to use;
currently disabled
A user has attempted to use a
telephone handset attached to
a VG248 port, which is
currently disabled.
To allow the user to make and
receive calls, you must enable
the port so it can register with
Cisco CallManager.
See “Setting the Port Enable
Policy” section on page 3-5 for
details.
SCCP
SCCP: Failed to
connect to SRST
provider
You have configured an SRST Check the configuration and
provider, but the device does status of the SRST device.
not appear to be responding as
an SRST server. If you are
relying on SRST and see this
warning, the VG248 might
have difficulty using SRST
services if connectivity to
Cisco CallManager is lost.
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Troubleshooting the VG248
Troubleshooting Software Errors
Table 6-3
Cisco CallManager Errors and Warnings Explanation (continued)
System
Error
Explanation
Action
SCCP
SCCP: Failed to
resolve SRST
provider host name
An SRST provider name has
been configured, but the
VG248 is unable to resolve
that name to an IP address.
Change the configured name, or
(if experiencing DNS problems)
change the SRST provider menu
entry to be an IP address instead
of a host name.
SCCP
No TFTP server
address
The TFTP server has not been
set.
SCCP
SCCP
Registration
failed: X
Registration
failures; last
reason X
This message, associated with
a particular port (1 – 48),
indicates that the port had
difficulty registering itself
with Cisco CallManager.
1.
If using DHCP to obtain
TFTP server, check your
DHCP server configuration.
2.
If you want to use a fixed
TFTP server, you must
configure it on the VG248
Refer to the “Identifying the
Cisco CallManager TFTP
Server” section on page 3-2
to assign a TFTP server for
details.
If a port is not properly
registered, then you cannot make
phone calls using it.
The reason that registration with
Cisco CallManager failed is
indicated in the message.
If the port cannot successfully
register, verify that the port is
properly configured in
Cisco CallManager.
See “Configuring VG248 Ports
Using Cisco CallManager”
section on page 5-1 for details.
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Chapter 6
Troubleshooting the VG248
Troubleshooting Software Errors
Table 6-3
Cisco CallManager Errors and Warnings Explanation (continued)
System
Error
Explanation
Action
SCCP
SCCP:SRST in use
One or more ports are
registered with the SRST
provider rather than a normal
Cisco CallManager server.
Connectivity to the
Cisco CallManager cluster has
been at least partially lost.
Check the status of the
Cisco CallManager cluster and
the network connection between
it and the VG248.
SCCP
TFTP failed; using
last known good
configuration
A port on the VG248 has failed
to retrieve its configuration
using TFTP. Instead, the
VG248 is using the
configuration stored last time
the port successfully
registered with
Cisco CallManager.
No action is required. However,
this message might indicate a
potential problem with
connectivity to the TFTP server.
Verify that the TFTP server is up
and running.
SCCP
Unable to resolve
TFTP server name
The VG248 was not able to
locate the TFTP server.
Verify the name of the TFTP
server the VG248 is attempting
to locate using Display >
System Status.
•
If using DHCP, check the
configuration on the DHCP
server to verify that it is
returning a valid TFTP
server name to the VG248.
•
If you are using a fixed
TFTP server, verify the
configured server name
using Configure ->
Telephony > CallManager
TFTP server.
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Chapter 6
Troubleshooting the VG248
Troubleshooting Software Errors
Resolving Analog Errors
Table 6-4 describes errors and warnings that might appear on the VG248 either
on-screen or in the event log (see the “Working with the Event Log” section on
page 6-33 for details on accessing the event log), which are caused by a
misconfiguration or miscommunication with the analog phones or features. Use
this information to resolve these errors.
Table 6-4
Analog Errors and Warnings Explanation
System
Error
Explanation
Action
POTS
Feature
codes: X same
as Y
You have configured the
telephone feature codes such that
the code for one operation (such
as speed dial) is the same as for
another (such as call forward).
Users will not be able to use one of
these operations. You must set
unique feature codes for each
operation.
You have configured the
telephone feature codes such that
the code for one operation masks
that for a second operation. For
example, if the feature code for
speed dial 1 is *** and the code
for speed dial 2 is ****, you
could never use speed dial 2.
Instead, as soon you dial the
third *, speed dial 1 activates.
Do not assign features codes that
might mask other operations.
POTS
Feature
codes: X
precludes Y
To prohibit users from performing an
operation, leave the feature code
setting empty. See the “Assigning
Feature Codes” section on page 3-3.
See the “Assigning Feature Codes”
section on page 3-3 for details.
Resolving Voice Mail Errors and Warnings
Table 6-5 describes voice mail errors and warnings that might appear on the
VG248 either on-screen or in the event log (see the “Working with the Event Log”
section on page 6-33 for details on accessing the event log) which are caused by
voice mail problems. Use this information to resolve these errors.
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Chapter 6
Troubleshooting the VG248
Troubleshooting Software Errors
Table 6-5
Voice Mail Errors and Warnings Explanation
System
Message
Explanation
Action
SCCP
CallManager MWI
off directory
number not
defined
CallManager MWI
on directory
number not
defined
These errors are generated
when the VG248 attempts to
perform a MWI operation on
a phone connected to
Cisco CallManager, but the
required Cisco CallManager
directory number has not
been configured.
You must enter the MWI set and clear
directory numbers for
Cisco CallManager. See the
“Identifying the Directory Number
for Setting MWI on
Cisco CallManager” section on
page 4-9 and “Identifying the
Directory Number for Clearing MWI
on Cisco CallManager” section on
page 4-9.
SCCP
MWI off attempt
failed–directory
number may be
incorrect
SCCP
MWI on attempt
failed–directory
number may be
incorrect
These messages are
generated when the VG248
has attempted to set or clear
a Message Waiting Indicator
for a particular extension but
has failed to do so.
Verify that you have entered the
correct MWI set and clear directory
numbers for Cisco CallManager. See
the “Identifying the Directory
Number for Setting MWI on
Cisco CallManager” section on
page 4-9 and “Identifying the
Directory Number for Clearing MWI
on Cisco CallManager” section on
page 4-9.
VM
Async 1 now
active
Async 1 now
inactive
Async 2 now
active
Async 2 now
inactive
SCCP
VM
VM
VM
These messages are informational
These messages indicate
that the VG248 has detected only.
that it is now connected to
another system via the
indicated Async port, or the
connection has gone down.
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Troubleshooting the VG248
Troubleshooting Software Errors
Table 6-5
Voice Mail Errors and Warnings Explanation (continued)
System
Message
Explanation
Action
VM
First voice mail
port number /
Number of VM
ports invalid
If a port number
configuration problem is
detected when generating a
voice mail incoming call
message, this error appears.
For example, the SMDI
protocol limits the number
of ports to 9999 using a
four-digit format. If you set
the first voice mail port
number to 9990, and the
number of voice mail ports
to 10, the last VG248 voice
mail port would correspond
to the voice mail system's
port 10000, which is invalid.
Verify that you have configured the
number of voice mail ports and the
first voice mail port number
following the guidelines of the voice
mail protocol you are using.
Certain voice mail
configuration settings
require the use of one or
both Async ports. For
example, if the Number of
Voice mail ports is greater
than 0, Async 1 must be
active. If Forward MWIs to
Async 2 is enabled, Async 2
should be up.
If a required Async port either fails to
come up when the box starts up or
goes down at some point during its
operation, the VG248 generates these
messages.
VM
Required Async 1
link has gone
down
VM
Required Async 1
link has not come
up
VM
Required Async 2
link has gone
down
VM
Required Async 2
link has not come
up
See the “Assigning Number of Voice
Mail Ports” section on page 4-5 and
the “Identifying the First Voice Mail
Port Number” section on page 4-5 for
additional assistance.
Check the cables on the Async 1 and
Async 2 ports to verify that they are
still connected.
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Chapter 6
Troubleshooting the VG248
Upgrading or Restoring Software Images
Table 6-5
Voice Mail Errors and Warnings Explanation (continued)
System
Message
Explanation
Action
VM
VM: Suspending
Async 1 port
transmission due
to overflow
These messages do not typically
appear, but they are indicative of a
serial communication.
VM
VM: Suspending
Async 2 port
transmission due
to overflow
Voice mail number
format too long
The VG248 has too much
data to send on one of its
Async links, and it has
ceased queueing new data
for transmission until the
backlog clears.
The voice mail number
format setting allows extra
digits to be added to
Cisco CallManager voice
mail box numbers or
directory numbers.
Verify that you set the number format
to support the mail box number in
your system. See the “Setting the
Number Format” section on page 4-6
for details.
VM
If the VG248 is asked to use
a number format that is
longer than the length of
mail box numbers passed to
the voice mail system, this
error occurs.
Upgrading or Restoring Software Images
The VG248 has two software images: a main software image and a boot loader. If
necessary, you can upgrade these software images. You can also reset the software
settings to their default values.
•
Suspending Voice Mail Port Activity, page 6-17
•
Upgrading the Main Image, page 6-18
•
Upgrading the Boot Loader, page 6-19
•
Resolving an Incomplete Upgrade, page 6-20
•
Restoring to Factory Defaults, page 6-20
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Chapter 6
Troubleshooting the VG248
Upgrading or Restoring Software Images
Suspending Voice Mail Port Activity
If you are using the chained configuration and want to temporarily remove one of
the VG248 devices or upgrade software on it, you should suspend activity on the
voice mail ports before shutting down or restarting the VG248.
By suspending activity, the VG248 waits for the port to become idle, then it
temporarily removes the port from Cisco CallManager and suspends the port,
preventing any activity on it. Once all the ports have been suspended, traffic from
Aysnc 1 is also suspended on the device. Voice mail traffic from Async 2 from the
previous VG248 device in the chain queues up while this device is suspended.
Suspending the device does not affect whether ports are enabled or not; if they
were enabled before being suspended, they are enabled after being resumed.
Before You Begin
If after following this procedure, the device is not suspended immediately, it is
likely that some of the ports still have active calls or there are pending MWI
commands on the Cisco CallManager system. You can check individual ports by
pressing Esc to exit the “Suspending...” message and choosing Display > Port
Status from the main menu.
Procedure
To suspend voice mail activity, follow these steps:
Step 1
From the main menu, choose Configure.
Step 2
Choose Suspend.
A message appears indicating that the device is being suspended.
Step 3
Shut down, restart, or upgrade software on the VG248, as needed. See “Upgrading
or Restoring Software Images” section on page 6-16 for details.
Step 4
If you are removing a VG248 device from the voice mail chain, you might need
to change the voice mail cabling also.
Step 5
To resume activity, choose Configure > Resume.
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Chapter 6
Troubleshooting the VG248
Upgrading or Restoring Software Images
Upgrading the Main Image
The main software image might need to be updated if a new release is available
on CCO as a bug update or feature enhancement.
Caution
When you send a new software image to the VG248 using FTP, the
current image is automatically deleted. If the FTP transfer
terminates before the new file is copied to the VG248, the VG248
might not be able to start up. See the “Resolving an Incomplete
Upgrade” section on page 6-20 to resolve this problem.
Before You Begin
If you are using the VG248 to integrate with analog voice mail systems, be sure
to follow the instructions described in the “Suspending Voice Mail Port Activity”
section on page 6-17 before upgrading the software image on the VG248.
Procedure
To upgrade the main software image, perform these steps:
Step 1
Obtain a configuration file whose name is in the following format:
vgc-main.<version>.tar, where <version> indicates the release number, such as
1-0-1.
Step 2
Connect to the VG248 using FTP.
Step 3
Send the configuration file to the VG248 using FTP.
Step 4
Restart the VG248 for the new image to take effect.
Step 5
From the main menu on the VG248, choose Display.
Step 6
Choose Version to verify the updated version has been installed.
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Troubleshooting the VG248
Upgrading or Restoring Software Images
Upgrading the Boot Loader
The boot loader is the initial startup image. You should not upgrade this image
unless instructed to do so by a Cisco technical representative.
Caution
Only upgrade the boot loader if you are instructed to do so by a Cisco
technical representative. If you encounter difficulties during this
upgrade, such as a loss of power, the VG248 might not be able to
start up.
Procedure
To upgrade the boot loader image, perform these steps:
Step 1
Obtain a configuration file whose name is in the following format:
vgc-load.<version>.bin, where <version> indicates the release number, such as
1-0-1.
Step 2
Connect to the VG248 using FTP.
Step 3
Send the configuration file to the VG248 using FTP.
You must use a destination name that begins with “boot:”. For example:
put vgc-load.<version>.bin boot:loader
Caution
If the VG248 loses power or experiences a failure at this step, the
VG248 might not start up. If this occurs, contact a Cisco technical
representative for assistance.
Step 4
After the FTP command has completed successfully, restart the VG248 for the
changes to take effect.
Step 5
Once the VG248 has restarted, choose Display > Version to verify that the
updated version has been installed.
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Verifying Connectivity
Resolving an Incomplete Upgrade
If you initiated an upgrade to the main software image, but terminated it before
the FTP transfer of the new image completed, the VG248 might not start up.
If this occurred, the next time the VG248 starts up, one of the following occurs:
•
The boot loader loads, but the VG248 waits indefinitely at the Pausing
FTP prompt.
•
The VG248 partially loads the main image, pauses, and then restarts.
for
To resolve either of these errors (while connected to the VG248 boot loader), use
the console port to establish an FTP session and transfer the main image file again,
following the steps in the “Upgrading the Main Image” section on page 6-18.
Restoring to Factory Defaults
Before You Begin
By default, the VG248 uses DHCP to obtain an IP address. If you have assigned
a static IP address to the VG248, you are likely to lose network connectivity.
Procedure
Follow these steps to reset the settings on the VG248 to their default values:
Step 1
From the main menu choose, Diagnostics.
Step 2
Choose Restore to factory configuration.
Verifying Connectivity
Use these sections to verify that the VG248 can connect to the network and that
the voice mail chain is properly connected:
•
Verifying Network Connectivity, page 6-21
•
Validating the SMDI Connection and Configuration, page 6-21
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Verifying Connectivity
Verifying Network Connectivity
To verify that the VG248 is connected to and communicating with your network,
you can attempt to ping another device on the network.
Procedure
Follow these steps to ping another device from the VG248:
Step 1
From the main screen, choose Diagnostics.
Step 2
Choose Ping network host.
Step 3
Enter the IP address or host name of the device.
The VG248 makes an attempt to reach the device once every second.
Step 4
Press Esc to exit.
Validating the SMDI Connection and Configuration
If you are using the SMDI protocol, you can evaluate the status of the SMDI
configuration and diagnose misconfiguration on the VG248 and other VG248
devices chained together. However, this diagnosis cannot detect problems in the
configuration of Cisco CallManager, legacy PBX, or individual extension’s voice
mail box numbers.
This diagnosis can identify configuration inconsistencies, such as breaks in the
MWI forwarding chain, incorrect wiring of Async 1 and Async 2 ports, and
missing configuration items such as the Cisco CallManager MWI directory
number strings.
Before You Begin
The diagnostic process requires messages to be sent over the serial links to both
the analog voice mail system and any attached legacy PBX. Performing this
diagnosis might temporarily interfere with the voice mail system’s normal
operation.
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Displaying Status and Configuration Settings
Procedure
Follow these steps to validate the SMDI configuration:
Step 1
From the main menu, choose Diagnostics.
Step 2
Choose Validate SMDI configuration.
A window displays with the results of the diagnosis, indicating any errors or
warnings.
Displaying Status and Configuration Settings
Use these sections to obtain information about the current status and settings of
the VG248 and its connections:
•
Displaying System Status, page 6-22
•
Displaying Network Statistics, page 6-24
•
Displaying Port Status, page 6-24
•
Displaying Detailed Port Status, page 6-25
•
Displaying Port Statistics, page 6-27
•
Displaying Current Configuration, page 6-28
•
Displaying Software Version, page 6-30
•
Monitoring the CPU Utilization, page 6-31
Displaying System Status
The system status provides an overview of the current network settings on the
VG248. Use this procedure to quickly check your network settings and
connectivity information.
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Displaying Status and Configuration Settings
Procedure
To display system status, perform these steps:
Step 1
From the main screen, choose Display.
Step 2
Choose System status.
The system status displays:
•
Up time
•
Real time clock
•
Serial number
•
Ethernet MAC address
•
IP address
•
Subnet mask
•
Default router
•
DNS server
•
TFTP server
•
Syslog server
•
Domain
•
Ethernet speed and duplex
•
Async 1
•
Async 2
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Displaying Status and Configuration Settings
Displaying Network Statistics
Use the network statistics to observe the network traffic and packet errors through
the IP connection on the VG248.
Procedure
To display network statistics, perform these steps:
Step 1
From the main screen, choose Display.
Step 2
Choose Network statistics.
These statistics display:
Tips
•
Octets
•
Unicast packets
•
Nonunicast packets
•
Discarded packets
Press the Tab key to reset the network statistics while viewing.
Displaying Port Status
The port status provides detailed information about each port on the VG248.
Procedure
To display port status, perform these steps:
Step 1
From the main screen, choose Display.
Step 2
Choose Port status.
Step 3
Use the information in Table 6-6 to interpret the port status.
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Displaying Status and Configuration Settings
Table 6-6
Port Status
Status
Description
Handset Status
OnHook
Not currently in use.
OffHook
User has lifted the handset.
Ringing
Incoming call to this port.
OnCall
A call has been established and voice packets are moving across the network.
Link Status
Up
Link is in its normal operating state (for the voice mail virtual port only).
Down
Link is not up (either because the port is not enabled or because of a temporary
failure).
Register
Port is registering with Cisco CallManager
<directory number>
Directory number for the port displays indicating that the port is up and
available for use.
Unregister
Unregistering from Cisco CallManager. Displays if port is being disabled or
reset.
PeerInUse
The port’s directory number is in use by another phone that shares the directory
number. The port is not available for use while a call is active on the other
phone.
KeepCall
The Cisco CallManager link has gone down, but the call that was in progress
is being maintained.
Displaying Detailed Port Status
Port status provides detailed statistics about the Cisco CallManager links.
Procedure
To display detailed port status, follow these steps:
Step 1
From the main screen, choose Display.
Step 2
Choose Port status.
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Displaying Status and Configuration Settings
Table 6-7
Step 3
Use the arrow keys to select one of the ports and press Enter.
Step 4
Use the information in Table 6-7 to interpret the port status.
Cisco CallManager Port Status
Type
Description
CallManager link
Status of the connection to Cisco CallManager
TFTP server
Host name or IP address of the TFTP server
Device name
Device name of the port as it appears in Cisco CallManager
Directory number
Extension number assigned to the analog device connected to this port
Forwarded to
Directory number to which calls are being forwarded
Call state
Status of the port from a user's viewpoint.
Remote party
Directory name and number of caller
Remote address
IP address and port of caller
Codec in use
Codec being used by Cisco CallManager:
•
G.729A
•
G.711 mu-law
•
G.711 a-law.
MWI
Whether the message waiting indicator for this port is on or off
CallManager name
DNS name of the Cisco CallManager host
CallManager IP address
IP address of Cisco CallManager
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Displaying Status and Configuration Settings
Table 6-7
Cisco CallManager Port Status (continued)
Type
Description
CallManager state
Status of connection to Cisco CallManager:
CallManager type
•
Active—connected to this Cisco CallManager and using this
connection for SCCP communication.
•
Connecting—in the process of connecting to this Cisco CallManager
•
Idle—this Cisco CallManager is not being used
•
Standby—connected to this Cisco CallManager but not currently
using the connection. Can use connection if active connection fails.
•
Pending—attempting to make this Cisco CallManager the active
connection as soon as possible.
Type of Cisco CallManager system:
•
Normal—typical Cisco CallManager system
•
Failover—Cisco CallManager system reserved for failover
situations
Displaying Port Statistics
Port statistics provide detailed information about the current or most recent call.
Procedure
To display the port statistics, follow these steps:
Step 1
From the main screen, choose Display.
Step 2
Choose Port status.
Step 3
Use the arrow keys to select one of the ports and press Enter.
Step 4
Press the Spacebar on the keyboard.
These statistics display for the current call, or last call if no call is active:
•
Tx packets
•
Rx packets
•
Call time
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Displaying Status and Configuration Settings
•
Rx bad sequence
•
Rx bad headers
•
Rx packets late
•
Rx packets early
These statistics display for the call history:
•
Incoming calls
•
Outgoing calls
•
Connected calls
These MWI statistics display for Cisco CallManager and Async 2:
•
Completed
•
Failed
•
Retries
•
Queued
•
Discarded
These Error responses statistics display:
•
Received
•
Forwarded
•
Discarded
These voice mail packet statistics display:
•
Async 1—Received, Transmitted, and Discarded
•
Async 2—Received, Transmitted, and discarded
Displaying Current Configuration
You can display the configuration of the VG248 device and its ports to quickly see
what settings are enabled.
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Displaying Status and Configuration Settings
Displaying VG248 Device Configuration
Using the web-based interface, you can see the current configuration settings for
the network, voice mail, and telephony features.
Before You Begin
You can also display the current configuration by choosing Diagnostics > Show
configuration from the main VG248 command interface.
Procedure
Follow these steps to display these device-level configuration:
Step 1
Open the VG248 web interface. (See the “Monitoring System Status Remotely”
section on page 6-31 for details.
Step 2
Click one of the following options and refer to the noted sections for assistance
interpreting the information.
•
Network and System—See the “Displaying System Status” section on
page 6-22 and the “Configuring Network Settings” section on page 2-5.
•
Telephony—See Chapter 3, “Configuring the Telephony Settings on the
VG248.”
•
Voice Mail—See Chapter 4, “Configuring Voice Mail Settings.”
Displaying Port Configuration
Using the web-based interface, you can see the specific configuration for each
port. Ports used for voice mail integration display voice mail specific
configuration details, and ports used for analog devices display telephony specific
configuration details.
Keep in mind that the voice mail settings are applied at the device level.
Therefore, no port-specific voice mail information displays. However, many
telephony features are applied on a per port basis. Therefore, you can obtain
information about these settings as well.
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Displaying Status and Configuration Settings
Procedure
To display the port configuration, follow these steps:
Step 1
Open the VG248 web interface. (See the “Monitoring System Status Remotely”
section on page 6-31 for details.
Step 2
Click a phone icon to display the configuration for the port.
Step 3
Refer to these sections for assistance interpreting this information:
•
Voice mail ports display this information:
– CallManager status—See Chapter 3, “Configuring the Telephony
Settings on the VG248.”
– CallManager list—See the “Displaying Detailed Port Status” section on
page 6-25 for details.
– Voice mail statistics—See the “Displaying Port Statistics” section on
page 6-27.
– Voice mail configuration—See Chapter 4, “Configuring Voice Mail
Settings.”
•
Analog ports display this information:
– CallManager status—See Chapter 3, “Configuring the Telephony
Settings on the VG248.”
– CallManager list—See the “Displaying Detailed Port Status” section on
page 6-25 for details.
– Call statistics—See the “Displaying Detailed Port Status” section on
page 6-25 for details.
– Port configuration—See the “Configuring Port Parameters” section on
page 3-7 for details.
Displaying Software Version
To display the current software version you are using on the VG248, perform
these steps:
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Monitoring System Status Remotely
Procedure
Step 1
From the main screen, choose Display.
Step 2
Choose Version.
Monitoring the CPU Utilization
You can monitor the processor usage to determine how much is being dedicated
to particular tasks. For example, if the VG248 appeared to be running slowly, you
could use this diagnostic to determine the culprit.
Procedure
To monitor the CPU utilization, follow these steps:
Step 1
From the main menu choose, Diagnostics.
Step 2
Choose CPU utilization.
Different subsystems appear noting the percentage in use.
Monitoring System Status Remotely
The VG248 includes a web server so you can monitor system status remotely
using a web browser application. These options are similar to those accessible via
the main VG248 interface , but you cannot change settings from the web interface.
Procedure
Follow these steps to monitor the system status remotely:
Step 1
From a web browser window, enter the IP address or host name of the VG248.
Step 2
If prompted for a password, enter the login password you have assigned. See the
“Configuring the Login Password” section on page 2-13 for details.
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Monitoring System Status Remotely
The web interface for the VG248 appears.
Step 3
Step 4
Table 6-8
Click a phone icon to display status for the port. See these sections for information
about interpreting this information:
•
Displaying Port Status, page 6-24
•
Displaying Detailed Port Status, page 6-25
•
Displaying Port Statistics, page 6-27
See Table 6-8 for information about the other available options.
VG248 Web Interface Options
Field
For More Information
Configuration/Status
Network and System
See the “Displaying System Status” section on page 6-22 and the “Configuring
Network Settings” section on page 2-5.
Telephony
See Chapter 3, “Configuring the Telephony Settings on the VG248.” and
“Displaying Port Configuration” section on page 6-29 for details.
Voice Mail
See Chapter 4, “Configuring Voice Mail Settings.”
SNMP
See “Configuring SNMP Settings” section on page 2-14.
Port Status
“Displaying Port Status” section on page 6-24 and the “Displaying Detailed
Port Status” section on page 6-25 for details.
Statistics
Network
See the “Displaying Network Statistics” section on page 6-24
Voice Mail
See the “Displaying Port Statistics” section on page 6-27.
Version Information
See the “Displaying Software Version” section on page 6-30.
Environment
See the “Monitoring Internal Operating Temperature” section on page 6-3.
Event Log
See the “Working with the Event Log” section on page 6-33.
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Working with the Event Log
Working with the Event Log
The event log enables you to capture errors, warnings, and other informational
messages from the VG248. Typically, you use these options only when
troubleshooting a complex issue, perhaps while working with a Cisco technical
representative.
However, using the default settings and these options, you can resolve many errors
on your own:
•
Identifying a Syslog Server, page 6-33
•
Selecting Logging Levels and Logged Ports, page 6-34
•
Displaying Recent Messages, page 6-35
•
Understanding Sub-Systems on the VG248, page 6-36
•
Resolving Incorrect Date and Time in Event Log, page 6-36
Identifying a Syslog Server
You can identify a syslog server to automatically capture and receive event logs
for remote network management.
Enabling Syslog
You can assign a syslog server to the VG248 using DHCP or by identifying a
specific syslog server.
Procedure
To enable syslog, follow these steps:
Step 1
From the main screen, choose Diagnostics.
Step 2
Choose Event log.
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Working with the Event Log
Step 3
Choose Syslog.
Step 4
Choose from the following options:
•
inactive—syslog disabled
•
use server from DHCP—syslog server determined by DHCP
•
use specified server—syslog server must be specified (see the“Identifying a
Specific Syslog Server” section on page 6-34)
Identifying a Specific Syslog Server
If you want to use a specific syslog server, you must enter its IP address by
performing these steps:
Procedure
Step 1
From the main screen, choose Diagnostics.
Step 2
Choose Event log.
Step 3
Choose Syslog server.
Step 4
Enter the IP address or host name of the network management system you want
to designate as the syslog server.
Selecting Logging Levels and Logged Ports
You can set the VG248 to log progressively more detail (information, errors, or
warnings), or you can restrict logging to specific ports.
Typically, you should configure these options only when working with a Cisco
technical representative because the nature of the problem determines the amount
of information required to resolve it.
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Working with the Event Log
Procedure
To set logging levels or select ports, perform these steps:
Step 1
From the main screen, choose Diagnostics.
Step 2
Choose Event log.
Step 3
Choose Set logging levels or Set logged ports.
Step 4
Work with a Cisco technical representative to determine the best options to select
and enter.
Displaying Recent Messages
You can obtain a list of recent messages from the VG248 to help you resolve some
configuration issues.
Procedure
To display recent messages, perform these steps:
Step 1
From the main screen, choose Diagnostics.
Step 2
Choose Event log.
Step 3
Choose View recent to display recent messages.
Step 4
See “Understanding Sub-Systems on the VG248” section on page 6-36 for
information on resolving these errors.
Tips
You can also select View all to display all errors, or View new to
display new errors only.
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Working with the Event Log
Understanding Sub-Systems on the VG248
The VG248 generates informational and warning messages and errors from
different sub-systems in its software. Many of these messages do not require any
intervention on your part; the device simply notifies you of changes or updates.
Other errors and warnings require additional troubleshooting or configuration.
Table 6-9 provides an overview of the different sub-systems on the VG248 that
might generate informational or warning messages.
Table 6-9
VG248 Sub-Systems
System
Description
DHCP
Communicates with DHCP server.
Ethernet
Concerned with low-level network link integrity.
OS
Runs the low-level services of the VG248.
FTP
Used to send new software images to the VG248.
DNS
Resolves host names to IP addresses.
TFTP
Handles retrieval of Cisco CallManager port configuration.
SLIC
Detects events from analog handsets.
DSP
Provides digital signal processing.
POTS
Bridges between analog and IP telephony.
SCCP
Transmits and receives telephony events over the IP network;
communicates with Cisco CallManager.
SNMP
Coordinates SNMP communication.
VM
Provides voice mail communication.
Resolving Incorrect Date and Time in Event Log
The VG248 has a built-in real time clock that synchronizes itself periodically with
Cisco CallManager to obtain the correct date and time. To ensure that the date is
synchronized properly, the VG248 must have at least one port enabled and
registered with Cisco CallManager. See the “Enabling a Specific Port” section on
page 3-8 for assistance on enabling and registering ports in Cisco CallManager.
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Working with the Event Log
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Working with the Event Log
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I N D EX
A
C
analog phones, support for 1-8
call control modes
assigning
accessing features in 1-6
default router 2-9
basic 1-5
DNS server 2-10
choosing 3-3
domain name 2-10
feature 1-5
feature codes 3-3
general tips 1-4
host name 2-8
standard 1-4
IP address 2-8
understanding 1-4
subnet mask 2-8
caller ID
syslog server 6-33
enabling 3-10
TFTP server 3-2
understanding 1-7
audience, for this document xi
Call Voice Mail, default feature code for 1-6
authentication traps, enabling 2-17
Call Waiting, default feature code for 1-6
auto registration
CDP
of VG248 to Cisco CallManager 5-2
enabling 2-12
support for 1-22
chained configuration, for SMDI 1-14
B
Cisco CallManager
basic, call control mode 1-5
adding MWI port 5-14
basic configuration, for SMDI 1-13
adding VG248
Blind transfer, default feature code for 1-7
auto-registration 5-2
manually 5-5
configuring voice mail ports 5-15
Cisco VG248 Analog Phone Gateway Software Configuration Guide
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IN-1
Index
enabling 2-6
errors, resolving 6-13
Cisco EnvMon MIB, support for 1-23
resetting IP address 2-7
Cisco Memory Pool MIB, support for 1-23
support for 1-20
Cisco Process MIB, support for 1-22
community strings
purpose 2-14
setting 2-14
Conference, default feature code for 1-7
Disable Forward All, default feature code
for 1-6
disconnect notification, configuring 4-16
disconnect supervision, enabling 3-12
displaying
current configuration 6-28
configuration, displaying current 6-28
network statistics 6-24
configuring
port status 6-24
disconnect notification 4-16
system status 6-22
enable password 2-14
keep alive number 4-15
DNS server
assigning 2-10
login password 2-13
purpose 2-10
message desk number 4-12
number of SMDI ports 4-5
pilot directory number 4-4
documentation, organization xii
domain name, assigning 2-10
SMDI number length 4-13
SNMP settings 2-14
E
telephony features 3-1
console, using 2-1
enable password
contact name, configuring 2-15
configuring 2-14
country code, identifying 3-5
purpose 2-14
enabling
authentication traps 2-17
D
caller ID 3-10
data and voice protocols, supported 1-20
CDP 2-12
default router, assigning 2-9
DHCP
DHCP 2-6
error messages, resolving 6-36
errors
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Index
resolving 6-13
assigning 2-8
resolving in SMDI 6-13
purpose 2-8
HTTP, support for 1-20
F
I
fax machines, support for 1-9
feature, call control mode 1-5
IGMP protocol, support for 1-20
feature code
input gain, setting 3-13
assigning 3-3
IP address
Blind transfer 1-7
assigning 2-8
Call Voice Mail 1-6
purpose 2-8
Call Waiting 1-6
resetting 2-7
Conference 1-7
IP protocol, support for 1-20
Disable Forward All 1-6
Forward All 1-6
K
Hold 1-7
Last Number Redial 1-6
keep alive number, configuring 4-15
Pickup 1-6
SpeedDial 1-6
L
first voice mail port number 4-5
first voice mail port number, configuring 4-5
Forward All, default feature code for 1-6
Last Number Redial, default feature code
for 1-6
FTP, support for 1-20
location, configuring 2-16
logging in
using console port 2-1
H
using Telnet 2-2
Hold, default feature code for 1-7
logging levels, setting 6-34
hook flash timer, changing 3-31
login password
host name
configuring 2-13
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Index
purpose 2-13
P
passwords
M
configuring 2-13
enable 2-14
main menu
login 2-13
navigating 2-3
message desk number, configuring 4-12
Pickup, default feature code for 1-6
MIBs, supported types 1-21
pilot directory number
modems, support for 1-9
configuring 2-14
monitoring, remotely 6-31
purpose 2-14
multiplexing configuration, for SMDI 1-16
pilot directory number, configuring 4-4
MWI port, adding to Cisco CallManager 5-14
PLAR phones, support for 1-9
MWI types
port
enabling on VG248 3-8
choosing 3-11
description 1-3
port enable policy, setting 3-5
ports
setting logging on 6-34
N
port status, displaying 6-24
navigating, main menu 2-3
protocols
IGMP 1-20
network statistics
IP 1-20
displaying 6-24
purpose 6-24
R
O
read-only community string, setting 2-14
output gain, setting 3-13
read-write community string, setting 2-14
restarting, VG248 2-4
RFC 1213, support for 1-21
RMON, support for 1-22
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Index
RTP, support for 1-20
configuring 2-14
configuring contact name 2-15
configuring location 2-16
S
configuring trap receiver stations 2-17
Skinny client control protocol, support for 1-20
configuring trap settings 2-17
SMDI
enabling authentication traps 2-17
Async 1 port, description 4-2
speakerphones, support for 1-8
Async 2 port, description 4-2
SpeedDial, default feature code for 1-6
choosing a configuration 1-12
standard, call control mode 1-4
configuring
subnet mask
assigning 2-8
disconnect notification 4-16
first voice mail port number 4-5
supported devices
keep alive number 4-15
analog phones 1-8
message desk number 4-12
fax machines 1-9
number of SMDI ports 4-5
modems 1-9
pilot directory number 4-4
PLAR phones 1-9
SMDI number length 4-13
speakerphones 1-8
connecting links to VG248 4-2
supported telephony features 1-3
resolving errors 6-13
syslog server, assigning 6-33
suspending port activity 6-17
system status
displaying 6-22
validating configuration 6-21
purpose 6-22
SMDI configuration
basic 1-13
chained 1-14
multiplexing 1-16
SNMP
support for 1-21
SNMP settings
community strings 2-14
T
telephony features
accessing in control modes 1-6
configuring 3-1
supported 1-3
Cisco VG248 Analog Phone Gateway Software Configuration Guide
OL-1209-04
IN-5
Index
Telnet, using 2-2
TFTP protocol, support for 1-20
TFTP server
assigning 3-2
purpose 3-2
trap receiver stations, configuring 2-17
traps
supported types 1-21
trap settings, configuring 2-17
troubleshooting
SMDI errors 6-13
types, of MWI 1-3
U
understanding
call control modes 1-4
caller ID 1-7
user interactions, with telephony features 1-6
V
validating, SMDI configuration 6-21
VG248
adding to Cisco CallManager 5-1, 5-2, 5-5
enabling ports on 3-8
restarting 2-4
voice mail ports, configuring in Cisco
CallManager 5-15
Cisco VG248 Analog Phone Gateway Software Configuration Guide
IN-6
OL-1209-04