Release Notes for Cisco MICA Portware Version
8.2.3.0 on Cisco AS5300 Universal Access
Servers with PIAFS (T1) Support for
Cisco IOS Release 12.2(2)XA and 12.2(2)XB
August 24, 2002
These release notes describe Cisco MICA Portware Version 8.2.3.0 for use with
Cisco IOS Software Release 12.2(2)XA and 12.2(2)XBon Cisco AS5300 universal access servers for
T1. Version 8.2.3.0 provides support for the Personal Handyphone System (PHS) Internet Access Forum
Standard (PIAFS). PIAFS is an error-correcting link layer protocol used in Japan over PHS digital
cellular networks. This release adds PIAFS 2.1 functionality, which provides an incremental improvement
over PIAFS 2.0 functionality.
Note
Version 8.2.x.x does not support modem modulations (for example, V.90), V.110, or fax.
If non-PIAFS features are desired, other portware images, such as
Cisco MICA Portware Version 2.7.3.0 can be loaded onto other Hex Modem Modules (HMMs) or
Double Density Modem Modules (DMMs) in your Cisco AS5x00 universal access server. See the
Restrictions section for more information.
These release notes describe the following topics:
•
PIAFS Overview, page 2
•
PIAFS-Specific Cisco MICA Portware Features, page 3
•
Compatibility Requirements, page 5
•
Restrictions, page 5
•
Known Problems with Cisco MICA Version 8.2.3.0, page 6
•
Downloading Portware Modem Code, page 7
•
Related Links, page 9
•
Obtaining Documentation, page 9
•
Obtaining Technical Assistance, page 10
Release Notes for Cisco MICA Portware Version 8.2.3.0 on Cisco AS5x00 Universal Access Servers
1
PIAFS Overview
PIAFS Overview
The PHS PIAFS protocol specifies a transmission system that uses the PHS 64,000 bps/32,000 bps
unrestricted digital bearer, which allows dynamic data rate change between 32 and 64 kbps during a call.
The PIAFS protocol allows for these dynamic data rate changes.
The PIAFS terminal adapter (TA) module works like a modem or a V.110 module by using the same
call-setup Q.931 message, but differs by its use of the 32k and 64k user rate and the ability to support
ISDN bearer channel capability and Calling Party Subaddress.
PIAFS provides data connectivity between a client computer and remote access server (RAS) using the PHS
digital cellular telephone system. Figure 1 shows a typical PIAFS RAS configuration.
PIAFS Configuration
Digital I/F
(PCMCIA
serial, USB)
PHS
base station/
public phone
ISDN
PRI
Access server
w/ PIAFS support
ISDN
PRI
Japanese
ISDN
network
Or
ISDN
BRI
Laptop
computer
PHS/PIAFS
terminal
adapter (TA)
PIAFS
TA
Digital I/F
(PCMCIA
serial, USB)
37402
Figure 1
With the PIAFS protocol, a call is initiated from the client computer/Personal Digital Assistant (PDA)
through a TA, which is typically connected to the computer using a PCMCIA slot, serial interface, or
USB interface. The TA contains PIAFS functionality and is either connected (or integrated) with a PHS
handset for wireless communications, or connected directly to the telco network using an ISDN BRI line.
For wireless operation, the PHS base station allocates either a 32 or 64 kbps user rate channel for the
connection with the client TA. The client and RAS perform PIAFS synchronization and feature
negotiation to set up an error correcting communication channel with optional V.42bis data compression.
PHS manages the user channel capacity based on the aggregate bandwidth used at the local base station
to maximize the number of supported users. In return, the channel capacity for each user is reduced.
PIAFS 2.1 allows the user rate to change during a call as base station use changes.
In previous PIAFS versions, the data rate was established at call setup and remained fixed during the
call. The dynamic user rate change capability introduced in PIAFS 2.1 uses radio frequency (RF) channel
capacity more efficiently and reduces the occurrence of call denial in heavily utilized cells.
Release Notes for Cisco MICA Portware Version 8.2.3.0 on Cisco AS5x00 Universal Access Servers
2
PIAFS-Specific Cisco MICA Portware Features
PIAFS-Specific Cisco MICA Portware Features
Table 1 contains information about Cisco MICA portware releases for PIAFS.
Table 1
Feature Content by Modem Version
Portware
Version
Cisco IOS
Software
8.2.3.0
12.2(2)XA,
12.2(2)XB
Maintenance release. Support for PIAFS version 2.1.
8.2.1.1
12.1(5)T
Maintenance release. Improvements made to existing PIAFS feature.
8.2.1.0
12.1(2a)XH
Initial release. Personal Handyphone (PHS) Internet Access Forum
Standard (PIAFS)
Feature Content
The following PIAFS 2.1 features are supported on the Cisco AS5300 platform with
Cisco MICA Version 8.2.3.0:
•
In-band negotiation and synchronization of variable-speed Type 2 data transmission. This allows
variable Type 2 devices such as Cisco MICA modems to connect with Type 1 and Type 2 initiating
devices. A PIAFS 2.1 connection can be with two Type 2 devices, two Type 1 devices, or a Type 1
and a Type 2 device. Operational Cisco MICA is always Type 2, but it can communicate with Type 1
and Type 2 devices as well as with systems running PIAFS 1.x and 2.0.
A Type 2 device cannot directly sense traffic channels (TCH). The TCH is the number of 32k
channels bound to a call. If the Type 2 device loses synchronization, the device assumes that the
speed has changed, so the device periodically switches its I.460 (1988 ITU-T standard) intermediate
rate adaptation function on and off while it is out of synchronization until it achieves
synchronization or fails to resynchronize. An originating Type 2 device switches every 1.6 to 1.8
seconds; a receiving Type 2 device switches every 200 milliseconds. A Type 2 device is notified of
speed changes from within the PIAFS protocol.
A Type 1 device directly senses the number of 32k RF channels bound to a call. It can either sense
the total number of channels that are currently bound (TCH) or issue an early warning of TCH
change (a preliminary signal, or PS). If a Type 1 device senses a TCH speed change, it switches
directly to the new speed, turning its I.460 intermediate rate adaptation on or off as necessary. If a
PS change is sensed, the device sends a protocol message before switching its I.460 logic. Both the
originating and the receiving device can be Type 1, depending on whether each device can sense
TCH or PS.
•
Note
Fixed user rate negotiation with PIAFS 2.0 and 1.x clients.
Some TAs support both PIAFS 2.0 and 2.1 protocols, but the negotiation message that is sent
to the initiated server unit indicates a preference for 2.0. Cisco MICA might create a 2.0
connection rather than a 2.1 connection. This is a normal Cisco MICA occurrence. A non-RF
connected client should have 64k available and would not benefit from the features of
PIAFS 2.1.
•
Real-time statistics for negotiated parameters and speed changes.
•
Mixed Cisco MICA (PIAFS and modem/fax/data) images on a DFC. A Cisco AS5300 universal
access server running Cisco IOS Release 12.2.(2)XA or 12.2(2)XB supports both PIAFS 2.1 and
modem calls together, on different SPEs in a multiple SPE configuration. See the Restrictions
section for more information.
Release Notes for Cisco MICA Portware Version 8.2.3.0 on Cisco AS5x00 Universal Access Servers
3
PIAFS-Specific Cisco MICA Portware Features
•
AT commands (modemcaps)—PIAFS is controlled by entering the MSC=&F&D2 modemcap. Enter
the no flush-at-activation command in the line configuration if Point-to-Point Protocol (PPP) is
desired.
•
S34 S-register—The S34 S-register interfaces with new PHS or TA devices in the field by selectively
inhibiting or enabling parts of the PIAFS 2.1 protocol. This S-register allows the use of non-standard
values.
For more information about S-registers and AT commands, refer to the
AT Command Set and Register Summary for MICA Six-Port Modules with PIAFS.
For information about configuring PIAFS Version 2.1, refer to the
PIAFS Wireless Data Protocol for Cisco MICA Modems, Version 2.1 feature module.
Module Firmware
The Cisco MICA module firmware is composed of two software components: Digital Signalling
Processor (DSP) firmware (also called the signal processor, or SP) and the module controller (CP)
firmware. The fundamental Cisco MICA processing block is composed of a single CP and three SPs, and
supports six ports or channels. The CP is an I.960 family reduced instruction set computing (RISC)
processor, and the SP is a C53 family DSP. Both the SP and the CP firmware can either both be PIAFS,
or both be modem.
During resynchronization, the PIAFS 2.1 protocol specifies when a station should switch its send and
receive speed. At these speed switch times, the SP switches by sending empty pad bits while the CP
requests by sending empty pad bits. At 64k, the SP passes all bits between the line and the CP. At 32k,
the SP adds 50 percent pad bits on transmission, and removes them on reception. At 32k, the SP must
also detect the alignment of these pad bits to determine which bits should be removed. This intermediate
rate adaption is described in the ITU-T I.460 recommendation.
When the SP has switched, it confirms the new speed to the CP. When the CP resynchronizes to a
different speed, it informs the Cisco IOS software that a speed change occurred, by issuing Cisco MICA
state changes. At the same time, it counts the number of actual speed changes in a statistics counter that
Cisco IOS software can request.
The SP firmware is bundled with the CP firmware image, which is downloaded on system reboot (or
during a user initiated download). A dial feature card (DFC) can contain either an HMM (a single
Cisco MICA processing block), or a DMM containing two processing blocks (supporting 12 ports or
channels per module).
The CP is responsible for implementing the data link level of the PIAFS protocol and interfacing with
the host (feature card and Cisco IOS software).
The following features are required to implement PIAFS 2.1:
•
In-band negotiation for variable-speed Type 2.
•
Implementation of the transmission speed switching negotiation protocol (PIAFS 2.1 protocol),
including timeouts.
•
Notification and coordination with SP for resynchronization (SP is responsible for I.460
intermediate rate synchronization and rate conversion). The CP performs PIAFS frame
synchronization.
•
Transmission change rate for intermediate rate conversion and synchronization after call setup and
upon notification from the CP.
•
Additional speedshift statistics.
Release Notes for Cisco MICA Portware Version 8.2.3.0 on Cisco AS5x00 Universal Access Servers
4
Compatibility Requirements
•
Cisco IOS Plus images for use with Cisco IOS Release 12.2(2)XA and 12.2(2)XB. See the
Restrictions section for more information.
Cisco IOS Software and Cisco MICA Portware
Cisco IOS software allows different Cisco MICA portware images to be loaded onto a DFC (restricted
to a signal processing element (SPE) boundary, an HMM, or DMM). Cisco MICA PIAFS support resides
in a PIAFS-only image. Cisco IOS supports mixed PIAFS and standard Cisco MICA modem
configurations including the following:
•
Download
•
Configuration
•
Statistics
•
Diagnostics
Cisco MICA continues to support earlier protocol versions and works with older PHSs and TAs.
Compatibility Requirements
Cisco MICA Portware Version 8.2.3.0 is supported with Cisco IOS Software Releases 12.1(2a)XH,
12.1(3)T, 12.1(5)T, 12.2(2)XA, and 12.2(2)XB. PIAFS Version 2.0 continues to be supported.
Supported Platforms
Cisco MICA Portware Version 8.2.3.0 is supported on the following platforms:
•
Cisco AS5300 universal access servers
For complete Cisco IOS software/Cisco MICA portware compatibility information, see the
Cisco AS5x00 and Cisco 3600 Cisco MICA 6-Port and 12-Port Modem Module Portware/Cisco IOS
Software Compatibility Matrixes.
Note
For Cisco IOS software release compatibility information, refer to the Cisco AS5300 Universal
Access Servers Release Notes.
Note
Contact your account representative for a list of modems tested with Cisco MICA portware.
Restrictions
Cisco MICA Portware Version 8.2.x.x supports the PIAFS protocol on T1 PRI ISDN only and does not
support modem modulations (for example, V.90), V.110, or fax. Similarly, standard (non-PIAFS)
Cisco MICA portware versions cannot support the PIAFS protocol.
The following additional restrictions apply to this release:
Release Notes for Cisco MICA Portware Version 8.2.3.0 on Cisco AS5x00 Universal Access Servers
5
Known Problems with Cisco MICA Version 8.2.3.0
•
PIAFS Version 2.1 with Cisco IOS Release 12.2(2)XA or 12.2(2)XB requires Cisco IOS Plus
images. The following Cisco IOS Plus images are supported with this feature:
– Desktop Plus
– Desktop Voice Plus
– Enterprise Plus
– Enterprise Plus IPSEC 56
– Enterprise Voice Plus
– IP Plus
– IP Plus IPSEC 56
– IP/Voice Plus
•
PIAFS and non-PIAFS functionality cannot be mixed on the same SPE. Each SPE can only support
one version of Cisco MICA portware at a time. You can reconfigure Cisco MICA SPEs to be either
modem or PIAFS. The portware determines SPE functionality.
A single SPE (6 Cisco MICA modem sessions with an HMM, or 12 Cisco MICA modem sessions
with a DMM) can support only one of the following:
– PIAFS 2.1 calls with Portware Version 8.2.3.0
Or
– Modem modulations using standard (non-PIAFS) Cisco MICA modem portware releases (for
example, Version 2.9.1.0).
•
PIAFS 2.1 is supported only over a T1 interface with ISDN switch-type set to primary-ntt.
Known Problems with Cisco MICA Version 8.2.3.0
This section describes known problems with Cisco MICA Portware Version 8.2.3.0 that are associated
with the PIAFS feature. If a workaround is not provided, a solution is being developed.
Bugs
•
CSCdt93924—PIAFS 2.1 needs to implement Extended FI.
For information about Cisco IOS software bugs and features for Cisco IOS release 12.2(2)XA, refer to
the following documents:
Note
•
Release Notes for Cisco AS5300 Universal Access Servers for Cisco IOS Release 12.2 XA
•
Release Notes for Cisco AS5300 Universal Access Servers for Cisco IOS Release 12.2 XB
•
Caveats for Cisco IOS Release 12.2.
If you have an account with Cisco.com, you can use Bug Navigator II to find caveats of any severity
for any release. To reach Bug Navigator II, log into Cisco.com and click Service and Support:
Technical Assistance Center: Select & Download Software: Jump to a software resource: Software
Bug Toolkit/Bug Watcher. Another option is to go to http://www.cisco.com/support/bugtools/.
Release Notes for Cisco MICA Portware Version 8.2.3.0 on Cisco AS5x00 Universal Access Servers
6
Downloading Portware Modem Code
Caveats
The following caveats apply to this release:
•
Register S29 is a read-only register. Attempts to write to this register using an AT command result
in an error message, and the remainder of the AT command line is ignored. This could impair
Cisco IOS software from applying modemcaps to the modem. (This condition also existed in
Cisco MICA version 8.2.1.0). To avoid this problem, Cisco recommends that the S29 register not be
set.
•
Index 38 of the link information parameters (error correction frames received bad/aborted) actually
registers the number of frames retransmitted by the PIAFS protocol due to errors or flow control.
Downloading Portware Modem Code
Cisco supports portware configuration using service processing element (SPE) configuration commands
and modem-pool commands. The spe command allows portware to be downloaded to the SPE. The spe
command is available for use with Cisco IOS Software Release 12.0(4)XI1 and higher.
SPE Download Tasks
To download modem firmware using the spe command, enter the spe command, one configuration
command per line.
Step 1
Enter the spe command and subcommands, one configuration command per line:
Router# configure terminal
Router(config)# spe <slot>/<spe_begin> <slot>/<spe_end>
Router(config-spe)# firmware location system:/ucode/mica_port_firmware
Router(config-spe)# ^Z
For example, the following display shows a Cisco AS5300 SPE download to all modems in Slot 1 (that
is, all modems on a feature card containing ten 6-port modem modules). The modem code resides in the
Flash memory, and the modem code filename is mica-modem-portware.8.2.3.0.bin.
Router(config)# spe 1/0 1/9
Router(config-spe)# firmware location flash:mica-modem-portware.8.2.3.0.bin
Step 2
Copy the configuration from NVRAM into running RAM:
Router# copy running-config startup-config
When download occurs and the modems become available, the modem shows the SPE firmware upgrade
option defined (default: busyout). The spe command generates NVRAM modem download and
configuration file entries.
Note
If the configuration is not saved as described above, download of the portware specified with
the spe command does not occur after the next reboot.
For detailed information about the spe command, go to the following link:
Release Notes for Cisco MICA Portware Version 8.2.3.0 on Cisco AS5x00 Universal Access Servers
7
Downloading Portware Modem Code
http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/120newft/120t/120t7/spe1206t.htm
Modem-Pool Download Tasks
To download modem firmware using FTP if you are using Cisco IOS Software Release 12.0(5)T or
earlier releases, use the Cisco Software Center link provided at the following URL:
•
For Cisco AS5300 universal access servers:
http://www.cisco.com/univercd/cc/td/doc/cisintwk/intsolns/as5xipmo/mostats.htm
Release Notes for Cisco MICA Portware Version 8.2.3.0 on Cisco AS5x00 Universal Access Servers
8
Related Links
Related Links
For further information about Cisco MICA portware and Cisco IOS software, see the following related
sources:
•
PIAFS Wireless Data Protocol Version 2.1 for Cisco MICA Modems
•
Cisco IOS Release 12.2 master indexes
•
AT Command Set and Register Summary for MICA 6-Port Modules
•
SPE and Firmware Download Enhancements
•
Cisco AS5300 universal access servers MICA release notes index page
•
Compatibility Matrix - Cisco MICA 6-Port and 12-Port Module Portware for Cisco AS5x00
Universal Access Servers
•
Cisco IOS 12.2 release notes for Cisco AS5300 universal access servers
•
Cisco AS5300 access servers, Appendix A, “Managing Modems,” and Appendix B, “Rom Monitor,”
in the Cisco AS5300 Universal Access Server Software Configuration Guide
•
Modem Management Commands
•
Cisco IOS Dial Services Command Reference for Cisco IOS Software Release 12.2
•
Cisco IOS Dial Technologies Configuration Guide, Release 12.2
•
Quick Start Guide, Cisco AS5300 Universal Access Server Install and Configure
•
V.90 and RFC-2217 dialout support for fax/data
The Cisco DialOut Utility (CDU) is no longer supported. Refer to the
Sample NAS Configurations for Cisco DialOut Utility document for information about
RFC-2217 reverse TELNET support.
Note
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.
Release Notes for Cisco MICA Portware Version 8.2.3.0 on Cisco AS5x00 Universal Access Servers
9
Obtaining Technical Assistance
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).
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].
To submit your comments by mail, use the response card behind the front cover of your document, or
write to the following address:
Attn Document Resource Connection
Cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA 95134-9883
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
Cisco.com is the foundation of a suite of interactive, networked services that provides immediate, open
access to Cisco information and resources at anytime, from anywhere in the world. This highly
integrated Internet application is a powerful, easy-to-use tool for doing business with Cisco.
Cisco.com provides a broad range of features and services to help customers and partners streamline
business processes and improve productivity. Through Cisco.com, you can find information about Cisco
and our networking solutions, services, and programs. In addition, you can resolve technical issues with
online technical support, download and test software packages, and order Cisco learning materials and
merchandise. Valuable online skill assessment, training, and certification programs are also available.
Release Notes for Cisco MICA Portware Version 8.2.3.0 on Cisco AS5x00 Universal Access Servers
10
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
Note
For PIAFS protocol support, contact Cisco.com Japan:
http://www.cisco.com/jp/
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:
http://www.cisco.com/register/
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
Release Notes for Cisco MICA Portware Version 8.2.3.0 on Cisco AS5x00 Universal Access Servers
11
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.
This document is to be used in conjunction with the Cisco IOS software and Cisco MICA portware documents.
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Release Notes for Cisco MICA Portware Version 8.2.3.0 on Cisco AS5x00 Universal Access Servers
12