Combined Release Notes for Cisco NextPort SPE
Firmware Version 8.x
September 20, 2004
These release notes contain Cisco NextPort dial feature card (DFC) firmware version code information.
This document contains the following sections:
•
Cisco NextPort SPE Firmware and Dial Feature Card Overview, page 1
•
Cisco NextPort SPE Firmware Features, page 2
•
New Features In Version 8.x SPE Firmware, page 5
•
Cisco IOS Software Compatibility, page 10
•
NextPort Caveats, page 11
•
Related Links, page 22
•
Obtaining Documentation, page 23
•
Obtaining Technical Assistance, page 24
Cisco NextPort SPE Firmware and Dial Feature Card Overview
NextPort SPE firmware is software that drives the digital signal processor (DSP) portion of the NextPort
dial feature cards (DFCs). NextPort firmware is bundled with Cisco IOS software.
NextPort SPE firmware runs on the NextPort DFC60, DFC108, 1 CT3, UPC 216, and UPC324 DFCs on
the Cisco AS5350, Cisco AS5400, and Cisco AS5850 platforms. The ports on these modules can support
modem, voice, fax, and digital services and can be aggregated at any of the following levels:
•
Slot level of the NextPort module
•
SPE level within the NextPort module
•
Individual port level
Corporate Headquarters:
Cisco Systems, Inc., 170 West Tasman Drive, San Jose, CA 95134-1706 USA
Copyright © 2003 Cisco Systems, Inc. All rights reserved.
Cisco NextPort SPE Firmware Features
Note
To use the NextPort Voice Tuning feature, you must upgrade from the default NextPort SPE firmware
code that runs with Cisco IOS software to NextPort SPE firmware release 8.8.1. Release 8.8.1 can be
downloaded from the Software Center on Cisco.com.
For more information, refer to the “Related Links” section on page 22.
Cisco NextPort SPE Firmware Features
Table 1 contains feature content for Version 8.x.
Table 1
Cisco NextPort SPE Firmware Version 8.x Features
Cisco
NextPort
SPE
Firmware
Version
New NextPort SPE Firmware Features
8.11.2
Maintenance release. There are no new features. See the “Caveats for Release 8.11.2” section on page 11.
8.11.1
Maintenance release. There are no new features. See the “Caveats for Release 8.11.1” section on page 13.
8.8.1
This version of NextPort SPE firmware introduces the NextPort Voice Tuning feature. For caveat information,
see the “NextPort Caveats” section on page 11.
8.5.1
Maintenance release. There are no new features. See the “Caveats for Release 8.5.1” section on page 16.
2
Cisco NextPort SPE Firmware Features
Table 1
Cisco NextPort SPE Firmware Version 8.x Features
Cisco
NextPort
SPE
Firmware
Version
New NextPort SPE Firmware Features
8.5
Maintenance release. There are no new features. See the “Caveats for Release 8.5” section on page 17.
3
Cisco NextPort SPE Firmware Features
Table 1
Cisco
NextPort
SPE
Firmware
Version
8.3
Cisco NextPort SPE Firmware Version 8.x Features
New NextPort SPE Firmware Features
Initial release. This version contains fixes from Cisco NextPort Firmware Release 7.18.3. Refer to the
Combined Release Notes for Cisco NextPort SPE Firmware Version 7.xy document on Cisco.com.
Voice Codecs
•
G.711, G.723.1 (5.3K and 6.3K), G.729a, G.729ab, G.726 (16K,24K,32K,40K1), GSMFR, and G.Clear
DSP Voice Features
•
G.168 echo cancellation—Up to 128 ms tail length
•
Transparent transcoding between A-law and mu-law encoding
•
Voice activity detection, silence suppression, comfort noise generation, fixed and adaptive jitter buffering
•
Modem passthrough
•
Call progress tone detection and generation—Dial tone, busy, ring-back, congestion, and re-order tones,
with local country variants
•
DTMF, MF, DTMF relay using NTE, DTMF relay RFC-2833
Voice and Fax Signaling Protocols
•
H.323v2, T.37, T.38 real-time fax relay at modulations V.17, V.29 and V.27ter
•
Fax out (transmission) Group 3, standards EIA 2388 Class 2 and EIA 592
•
Class 2.0, at modulations V.33, V.17, V.29, V.27ter, and V.21
•
No Circuit Tone Generation and Detection
•
Large packet support for IVR
•
SR2275-Type 105 test tone1
ISDN Protocols
•
Sync mode PPP and V.110 at rates up to 38400 bps
•
Async V.120 at speeds of 64K and 56K for T1 and E1
Modem Modulations
•
V.92 Modem on Hold and Quick Connect
•
V.90 standard supporting rates of 56000 to 28000 in 1333 bps increments
•
K56Flex at 56,000 to 32,000 in 2000 bps increments
•
ITU-T V.34 Annex 12 at 33,600 and 31,200 bps
•
V.32bis at 14400, 12000, 9600, 7200, 4800; V.32 at 9600, 4800; V.22bis at 2400, 1200; V.21 at 300; Bell
103 at 300; V.22 at 1200; V.23 at 1200/75
Modem Protocols
•
ITU-T V.44
•
ITU-T V.42 (including MNP 2-4 and LAPM) error correction
•
ITU-T V.42bis (1000 nodes) and Microcom Networking Protocol (MNP) 5 data compression
•
Async-mode PPP
Wireless Protocols
V.110
4
New Features In Version 8.x SPE Firmware
1. This feature is supported by NextPort firmware but not by Cisco IOS Software.
New Features In Version 8.x SPE Firmware
This section contains new feature information for all Version 8.x.x releases.
Note
There are no new features for the following NextPort SPE firmware versions: 8.11.1, 8.5.1, or 8.5.
New With Version 8.8.1 SPE Firmware
This section introduces new features for NextPort SPE firmware version 8.8.1.
NextPort Voice Tuning
Note
To use the NextPort Voice Tuning feature, you must upgrade from the default NextPort SPE firmware
code that runs with Cisco IOS software to NextPort SPE firmware release 8.8.1 or later. Release 8.8.1
can be downloaded from the Software Center on Cisco.com.
Voicecaps
Voicecaps are a means to tune voice services and potentially provide improved voice quality. The
following parameters, among others, can be configured:
•
PSTN gains
•
IP gains
•
Dynamic attenuation
•
Comfort noise generation (CNG)
•
Minimum ERL—Switches off near-end talker clipping and poor echo canceller performance
Voice services on NextPort DFCs can be tuned with voicecap strings, which are configured and applied
using the voicecap entry and voicecap configure commands.
For more information about voicecaps and how they are used, refer to the NextPort Voice Tuning
Whitepaper on Cisco.com.
How to Configure NextPort Voice Tuning
This sections contains tasks to configure the NextPort Voice Tuning feature.
•
Downloading NextPort SPE Firmware, page 6 (required)
•
Creating and Applying Voicecaps, page 7 (required)
•
Verifying Voicecap Configurations, page 9
•
Troubleshooting NextPort Voicecaps, page 9
5
New Features In Version 8.x SPE Firmware
Downloading NextPort SPE Firmware
To download NextPort SPE firmware, use the following commands.
SUMMARY STEPS
1.
enable
2.
configure terminal
3.
spe slot/spe-begin slot/spe-end
4.
firmware location system: firmware
5.
end
6.
copy running-config startup-config
DETAILED STEPS
Step 1
Command or Action
Purpose
enable
Enables privileged EXEC mode.
•
Enter your password if prompted.
Example:
Router> enable
Step 2
configure terminal
Enters global configuration mode.
Example:
Router# configure terminal
Step 3
spe slot/spe-begin slot/spe-end
Example:
Router(config)# spe 1/0 1/17
Step 4
firmware location system: filename
Example:
Router(config-spe)# firmware location
flash:np.8.8.1.spe
6
Downloads SPE modem code to all modems in a particular
slot (that is, all modems on a feature card containing
eighteen 6-port modem modules).
•
Enters SPE configuration mode.
Downloads SPE modem code to Flash memory.
New Features In Version 8.x SPE Firmware
Step 5
Command or Action
Purpose
end
Completes the download and exits SPE configuration mode.
Example:
Router(config-spe)# end
Step 6
copy running-config startup-config
Copies the configuration from running RAM into NVRAM.
•
The download occurs when the modems become
available and the display shows the SPE firmware
upgrade option defined (default: busyout).
•
The spe command generates NVRAM modem
download and configuration file entries.
Example:
Router# copy running-config startup-config
Note
•
If the configuration is not saved as described above,
download of the firmware specified with the spe
command will not occur after the next reboot.
For detailed information on the spe command, refer to
the Cisco document
SPE and Firmware Download Enhancements.
Creating and Applying Voicecaps
Note
To create and apply voicecaps, it is required that you contact Cisco Technical Response Center (TAC).
The steps in this section allow you to configure a voicecap on a single voice port. Although voicecaps
can be used to configure any of the voice service parameters, voicecaps are primarily used to configure
only those parameters that do not have associated Cisco IOS commands.
The voicecap entry name string command configures NextPort SPE firmware through voicecap strings
in global configuration mode. This command allows you to assign values to specific registers. Voicecaps
are applied to specific voice ports at system startup.
The voicecap configure name command applies a voicecap on NextPort platforms in voice-port
configuration mode.
Restrictions
•
Voicecaps are configured in global configuration mode. A maximum of five voicecap entries can be
defined.
•
Applying a voicecap is possible only in voice-port configuration mode. Once applied to a voice port,
the voicecap affects all calls associated with that voice port.
•
An SPE image capable of voice tuning must be used in conjunction with a Cisco IOS release
12.3(1)M or later
1.
enable
2.
configure terminal
3.
voicecap entry name string
SUMMARY STEPS
7
New Features In Version 8.x SPE Firmware
4.
voice-port slot/port:D
5.
voicecap configure name
6.
exit
DETAILED STEPS
Step 1
Command or Action
Purpose
enable
Enables privileged EXEC mode.
•
Enter your password if prompted.
Example:
Router> enable
Step 2
configure terminal
Enters global configuration mode.
Example:
Router# configure terminal
Step 3
voicecap entry name string
Creates a voicecap.
•
The name argument is a word that uniquely identifies
this voicecap.
•
The string argument is a string of characters composed
of a series of voicecap register entries, similar to a
modemcap. Each entry is of the form
vINDEX=VALUE, where INDEX refers to a specific
V register, and VALUE designates the value to set that
V register to.
•
The example creates a simple voicecap string named
“EXAMPLE v0 = 0.”
Example:
Router(config)# voicecap entry EXAMPLE v0 = 0
Note
Step 4
voice-port slot/port:D
Contact Cisco TAC to assist in designing a voicecap
configuration.
Enters voice-port configuration mode on the selected slot
and port.
Example:
Router(config)# voice-port 3/0:D
Step 5
voicecap configure name
Applies a voicecap.
•
The name argument designates which of the newly
created voicecaps to use on this voice port. This
character value must be identical to the value entered
when you created the voicecap entry. In this case, the
value is “EXAMPLE v0 = 0.”
Note
To configure multiple voice ports, repeat the
voice-port slot/port:D and voicecap configure
name commands for each voice port.
Example:
Router(config-voiceport)# voicecap configure
EXAMPLE v0 = 0
Step 6
exit
Example:
Router(config-voiceport)# exit
8
Exits voice-port configuration mode and completes the
configuration.
New Features In Version 8.x SPE Firmware
Verifying Voicecap Configurations
Use the following show command in privileged EXEC mode to verify your configuration.
SUMMARY STEP
1.
show voice port
DETAILED STEP
Step 1
show voice port
Use this command to display configured voicecaps, for example:
Router# show voice port
ISDN 2/0:D - 2/0:D
Type of VoicePort is ISDN
Operation State is DORMANT
Administrative State is UP
No Interface Down Failure
Description is not set
.
.
.
Station name None, Station number None
Translation profile (Incoming):
Translation profile (Outgoing):
Voicecap:EXAMPLE
Troubleshooting NextPort Voicecaps
Use the following debug and show commands in privileged EXEC mode to debug the application of a
voicecap and to check debugging output:
SUMMARY STEPS
1.
debug nextport vsmgr detail
2.
debug dspapi detail
DETAILED STEPS
Step 1
debug nextport vsmgr detail
Use this command to turn on debugging for NextPort voice services, for example:
Router# debug nextport vsmgr detail
NextPort Voice Service Manager:
NP Voice Service Manager Detail debugging is on
.
.
.
Step 2
debug dspapi detail
Use this command to turn on debugging for DSP API message event details, for example:
Router# debug dspapi detail
9
Cisco IOS Software Compatibility
DSP API:
DSP API Command debugging is on
DSP API Detail debugging is on
.
.
.
NextPort Voice Service Manager:
NP Voice Service Manager Detail debugging is on
DSP API:
DSP API Command debugging is on
DSP API Detail debugging is on
*Aug 22 08:34:47.399:dspapi [2/1:1 (4)] dsp_init
*Aug 22 08:34:47.399:dspapi [2/1:1 (4)] dsp_voice_config_params:10 params
*Aug 22 08:34:47.399: [0] ENCAP RTP:t_ssrc=20 r_ssrc=0 t_vpxcc=0 r_vpxcc=0
ifp_payload_type=122 sid_support=19 tse_payload=101
seq_num_start=6303 redundancy=0 cc_payload_typ
Router# e=125 fax_payload_type=122 alaw_pcm_switchover=8 mulaw_pcm_switchover=0
dtmf_payload_type=121, nte_rcv_payload_type=101dynamic_payload=0, codec=5
*Aug 22 08:34:47.399: [1] PO_JITTER:mode=2 initial=60 max=200 min=40 fax_nom=300
*Aug 22 08:34:47.399: [2] INBAND_SIG:mode=0x1 enable
*Aug 22 08:34:47.399: [3] ECHO_CANCEL:flags=0x17 echo_len=256
*Aug 22 08:34:47.399: [4] IDLE_CODE_DET:enable = 0 code=0x0 duration=6000
*Aug 22 08:34:47.403: [5] GAIN:input=0 output=0
*Aug 22 08:34:47.403: [6] CNG:
Router# 1
*Aug 22 08:34:47.403: [7] INFO_FIELD_SIZE:160
*Aug 22 08:34:47.403: [8] DIGIT_RELAY:2
*Aug 22 08:34:47.403: [9] VOICECAP:EXAMPLE
*Aug 22 08:34:47.403:dspapi [2/1:1 (4)] dsp_start_service:G711_U (5)
*Aug 22 08:34:47.403:Matched voicecap:v0=0 v1=1
*Aug 22 08:34:47.403:msg length = 0x001D
*Aug 22 08:34:47.403:session ID = 0x006D
*Aug 22 08:34:47.403:
msg tag = 0x0000
*Aug 22 08:34:47.403:
msg ID = 0xF201
Cisco IOS Software Compatibility
Table 2 describes Cisco IOS Software compatibility with Cisco NextPort SPE firmware releases.
Table 2
Cisco IOS Software Compatibility
Cisco NextPort SPE Firmware Version
Cisco IOS Software Version
8.11.2
This SPE image has been tested with 12.3(11)T.
8.11.1
This SPE image has been tested with 12.3(4)T6.
8.8.1
This SPE image has been tested with 12.3(3) mainline.
8.5.1
This SPE image has been tested with 12.2(13)T5.
8.5
This SPE image has been tested with 12.2(11)T8,
12.2(15)T4, and 12.3(3) mainline.
8.3
This SPE image has been tested with 12.2(11)T5 and
12.2(13)T1. It is bundled with Cisco IOS Release
12.2(13)T3.
10
NextPort Caveats
NextPort Caveats
This section describes known problems and resolved caveats with NextPort firmware and NextPort SPE
firmware:
•
Caveats for Release 8.11.1, page 13
•
Caveats for Release 8.8.1, page 14
•
Caveats for Release 8.5.1, page 16
•
Caveats for Release 8.5, page 17
•
Caveats for Release 8.3, page 19
Caveats for Release 8.11.2
This section describes known problems and resolved caveats with NextPort SPE firmware.
•
Release 8.11.2 Cisco NextPort SPE Firmware Caveats
Release 8.11.2 Cisco NextPort SPE Firmware Caveats
•
Resolved Caveats for Cisco NextPort SPE Firmware Version 8.11.2
•
Unresolved Caveats for NextPort SPE Firmware Version 8.11.2
Resolved Caveats for Cisco NextPort SPE Firmware Version 8.11.2
•
CSCee53791—EOP/MPS not received on S&F onramp call
•
CSCee11457—POST aborts with 8.8.1 in manufacturing test
Unresolved Caveats for NextPort SPE Firmware Version 8.11.2
•
CSCdx00509—T.38 Fax Relay ECM Cisco AS5400 to Cisco AS5300 fails random packet loss
testing
•
CSCdz72276—More than 2 page can not be sent (MPS not detected)
•
CSCea86206—Nextport connect at lower speeds than Cisco MICA for specific line condition
•
CSCeb06976—Faxlab profile fails to complete call on Cisco AS5400 to Cisco AS5400
•
CSCeb09418—MPT-G726 codecs-initial connect rates fail criteria
•
CSCeb09730—MPT-failure to connect and low mods to some tier one clients
•
CSCeb12533—RFC 2833 enhancement (adding new events)
•
CSCeb26612—SSE new feature add to support MPT standard
•
CSCeb35784—Intermittent fax relay failure on Cisco AS5350
•
CSCeb41233—Low CSR when doing modem passthrough between Cisco 7200 to Cisco AS5400
•
CSCeb61150—Cisco AS5400 G729a voice quality lower than expected during impairment test
•
CSCeb86823—NextPort takes too long to disconnect at end of T.38 MGCP call
•
CSCec51534—Remove G728 codec support in DSP firmware
•
CSCec55672—Nextport V.34 asymmetry link rate violation
11
NextPort Caveats
12
•
CSCec62153—VAD threshold with G729r8 packets is incorrect
•
CSCec72269—Low DSR percentage on modem passthrough calls with customer modem
•
CSCec85701—High comfort noise level on GSMFR
•
CSCed05997—During T.30 negotiation, a delayed DCS will cause repeated DIS
•
CSCed18316—Callback process chat script fail status=Connection timed out
•
CSCed39443—New echo canceller improvements (split adaptive filter)
•
CSCed68818—Add support for S49
•
CSCed69637—Client-to-client calls failing over AS5xxx/third-party gateways
•
CSCed71753—Digit entered is lost when using modules
•
CSCed86457—Support for NTT CP tone
•
CSCed95441—Invalid tone detect notifications
•
CSCee02179—NextPort unable to trainup with USR client under certain line conditions
•
CSCee26845—Echo canceller convergence delay with 8.8.1 SPE firmware
•
CSCee27653—VAD hang-over counter needs to be shortened
•
CSCee27728—Need to enhance T.38 statistics (CSMV/6 changes)
•
CSCee46817—Low connect rates and failures compared to Cisco MICA in poor line condition
•
CSCee66364—NextPort loses incoming unframed null dataw np_md_recv_inband_msg
•
CSCee71851—Mis-detection of V21 message after T4 high speed data transfer
•
CSCee75839—7001 session abort
•
CSCee76135—SPE fails to respond to SESSION_STOP_CMD properly
•
CSCee81629—Dynamic attenuation minimum ERL is not working
•
CSCee95794—COT fails with loopback and contest modes
•
CSCef10046—Cisco IOS gateway fails to send digit end notification for RFC 2833
•
CSCef24901—DSP stops requesting data for up to 90 seconds
•
CSCef42203—Fax passthrough fax success rate only 77%
•
CSCef45055—Cisco AS5400 NSE DTMF-relay using SDP is not working incoming from PSTN
•
CSCef48269—After some period of time certain nextport modems do not start PPP
•
CSCef49277—7002 session abort after 30 hours specific setting stress run
•
CSCef50098—Data packet not reached to terminating modem after dialer de-queued
•
CSCef57920—T.38 fails with 200-700ms of IP impairment/latency
•
CSCef63911—Fax passthrough interop problem between 5400-3745 with 4.4.x DSPware
•
CSCef72195—Extended tail echo canceller for SPE firmware version 10.x
•
CSCef72216—CNG Power offset voicecap addition to VPtune
•
CSCuk52898—T38 GW controlled fax calls terminating on IBMT40 fail
•
CSCed39443—New dual-filter echo canceller improvements
•
CSCec50774—Effort in T.38 statistics enhancement
•
CSCeb35784—Intermittent fax relay failure on Cisco AS5350
•
CSCed52941—DTMF-Relay failures with certain codecs
NextPort Caveats
•
CSCee26845—Echo canceller convergence delay with 8.8.1 SPE firmware
•
CSCee43381—Problem with enabling fax relay packet loss concealment
•
CSCee69375—VoIP calls with G.711 ulaw VAD on generating excessive silence packets
Caveats for Release 8.11.1
This section describes known problems and resolved caveats with NextPort Firmware and NextPort SPE
firmware.
•
Release 8.11.1 Cisco NextPort SPE Firmware Caveats
Release 8.11.1 Cisco NextPort SPE Firmware Caveats
•
Resolved Caveats for Cisco NextPort SPE Firmware Version 8.11.1
•
Unresolved Caveats for NextPort SPE Firmware Version 8.11.1
Resolved Caveats for Cisco NextPort SPE Firmware Version 8.11.1
•
CSCdy66236—NextPort sends SYN in response to LR
•
CSCee69375—VoIP calls w/ G.711 ulaw VAD on generating excessive silence packets
•
CSCee11457—POST aborts with 8.8.1 in manufacturer’s test
•
CSCee01062—DTMF relay failures with default codec
•
CSCdz88491—NextPort sends ABORTED rather than 8 with numeric result codes on
•
CSCea46223—Fax call fails due to delay between first MPS and second MPS
•
CSCeb08393—T30 debug message enhancement
•
CSCed95810—CSMV/6 IP side tone detector is needed
•
CSCec40023—MPT clients disconnect early with 1% random loss.
•
CSCec88042—T38 fax failures between client fax machines due to T30-NSF signal
•
CSCea82278—Bell 103 fails to connect in modem passthrough
•
CSCeb31958—Client modem falls to V.34 when V.92 enabled
•
CSCeb18962—SPE Crash 7001 Session Aborts with modem and fax tones
•
CSCeb80408—7001: Extraneous CMDREQ/Fail Codes, at customer site
•
CSCeb22393—Cisco AS5350: Loud noise occurs soon after voice media is reconnected
•
CSCea13329—7003 session abort at customer site
•
CSCdz53097—7002 Session abort at customer site
•
CSCec01576—Fax Class 1 should not be configurable on the V6
•
CSCea38093—7002 session abort at customer site
•
CSCeb38576—Clear Channel codec translates hex 7f incorrectly
•
CSCea23338—Jitter buffer and latency improvement in all codecs
•
CSCec09483—Session aborts seen
13
NextPort Caveats
Unresolved Caveats for NextPort SPE Firmware Version 8.11.1
•
CSCee75839—7001 Session abort
•
CSCee76135—SPE fails to respond to SESSION_STOP_CMD properly
•
CSCea86206—Nextport connects at lower speeds than Cisco MICA for specific line conditions
•
CSCeb09418—MPT-G.726 codecs-initial connect rates fail criteria
•
CSCeb09730—MPT-failure to connect and low mods to some tier1 clients
•
CSCeb35784—Intermittent fax relay failure on Cisco AS5350
•
CSCeb41233—Low CSR when doing modem passthrough between Cisco 7200 to Cisco AS5400
•
CSCeb61150—Cisco AS5400 G.729a voice quality lower than expected during impairment test
•
CSCeb78453—MPT fails when a call is placed from a POS modem
•
CSCec72269—Low DSR percentage on modem passthrough calls with specific client modem
•
CSCed47874—Cisco AS5400 fails to start T.38 fax session to non-IOS device
•
CSCed69637—Client-to-client calls failing over Cisco AS5xxx/third party gateways
•
CSCed71753—Digit entered is lost when using modules
•
CSCed86024—T38 Fax-relay calls fail (OGW sends DIS, no DCS seen)
•
CSCed95441—Invalid tone detect notifications
•
CSCee02179—Nextport unable to trainup with client under certain line conditions
•
CSCee27653—VAD hang-over counter needs to be shortened
•
CSCee29582—No ringback or audio heard on intermittent calls
•
CSCee49909—Connection failure occurs when Nextport is calling out to non-Cisco rackmount
server
•
CSCee53791—EOP/MPS not received on S&F onramp call
•
CSCdz72276—More than two pages cannot be sent (MPS not detected)
•
CSCee34206—SIP: DSP stops transmitting RTP when RTP payload type mismatched
•
CSCee63799—Very low level negative noise artifact generated during silence periods in G.729
Caveats for Release 8.8.1
This section describes known problems and resolved caveats with NextPort Firmware and NextPort SPE
firmware.
•
Release 8.8.1 Cisco NextPort Firmware Caveats, page 14
•
Release 8.8.1 Cisco NextPort SPE Firmware Caveats, page 15
Release 8.8.1 Cisco NextPort Firmware Caveats
14
•
Resolved Caveats for Cisco NextPort Firmware Version 8.8.1
•
Unresolved Caveats for Cisco NextPort Firmware Version 8.8.1
NextPort Caveats
Resolved Caveats for Cisco NextPort Firmware Version 8.8.1
•
CSCdx71816—GSMFR SID frames are not compatible between the Cisco AS5400 and
Cisco AS5300
•
CSCdy15936—F201 NAKs for INVALID_PARAMETER_VALUE needs to add index of bad
parameter
•
CSCdy15943—Suppress NAKs for messages arriving after a session abort
•
CSCeb53742—MC should appropriately range-check voicecap configurations
•
CSCeb23949—New echo canceller background noise link information is reported
•
CSCeb27192—Average voice statistics is reported in the terminating link information
Unresolved Caveats for Cisco NextPort Firmware Version 8.8.1
•
CSCdv77113—No branch dynamic LI notifications when LI interval is set
•
CSCdv85833—Need to implement G.726 asynchronous payload types
•
CSCdw54654—Mail command first ACKd then NACKd
•
CSCdz15333—PT13/19 mismatch between Cisco AS5400 and Cisco AS5300 for generic SID
frames
Release 8.8.1 Cisco NextPort SPE Firmware Caveats
•
Resolved Caveats for Cisco NextPort SPE Firmware Version 8.8.1
•
Unresolved Caveats for Cisco NextPort SPE Firmware Version 8.8.1
Resolved Caveats for Cisco NextPort SPE Firmware Version 8.8.1
•
CSCea43403—Disable 2100Hz notch filter for complex codec
•
CSCea07858—Background noise statistics improvement
•
CSCea36877—Dynamic attenuation in echo canceller
•
CSCea54242—Voice tune API
•
CSCeb09439—Overall degradation in modem CSR as (term NAS) in MPT testing
Unresolved Caveats for Cisco NextPort SPE Firmware Version 8.8.1
•
CSCdx00509—T.38 Fax Relay Cisco AS5400 to Cisco AS5300 fails random packet loss
•
CSCdx86537—T.38 fax fails with specific client modem and fax machines
•
CSCdy68328—Timeout expecting OK after sending ATZ in chat script on dialout
•
CSCdy78313—7002 session abort due to DSP RAM access
•
CSCdy87188—Barge-in not smooth when using ASR
•
CSCdz15984—SPE crash with command 0XF103 with FPT MGCP stress
•
CSCdz39198—show port fax log fails to verify change when ECM is enabled and disable
•
CSCdz42089—Use V.110 user rate as indicated in E-bits
•
CSCdz42832—New feature add to voice COT
15
NextPort Caveats
Caveats for Release 8.5.1
This section describes known problems and resolved caveats with NextPort Firmware and NextPort SPE
firmware.
•
Release 8.5.1 Cisco NextPort Firmware Caveats, page 16
•
Release 8.5.1 Cisco NextPort SPE Firmware Caveats, page 16
Release 8.5.1 Cisco NextPort Firmware Caveats
•
Resolved Caveats for Cisco NextPort Firmware Version 8.5.1
•
Unresolved Caveats for Cisco NextPort Firmware Version 8.5.1
Resolved Caveats for Cisco NextPort Firmware Version 8.5.1
None.
Unresolved Caveats for Cisco NextPort Firmware Version 8.5.1
•
CSCdv77113—No branch dynamic LI notifications when LI interval set
•
CSCdy15936—F201 NAKs for INVALID_PARAMETER_VALUE needs to add index of bad
parameter
•
CSCdy15943—Suppress NAKs for messages arriving after a session abort
•
CSCdw54654—Mail command first ACKd then NACKd
Release 8.5.1 Cisco NextPort SPE Firmware Caveats
•
Resolved Caveats for Cisco NextPort SPE Firmware Version 8.5.1
•
Unresolved Caveats for Cisco NextPort SPE Firmware Version 8.5.1
Resolved Caveats for Cisco NextPort SPE Firmware Version 8.5.1
•
CSCec04134—PSTN user hears loud squeal when VoIP (SIP) user puts call on hold
Unresolved Caveats for Cisco NextPort SPE Firmware Version 8.5.1
16
•
CSCdv85833—Need to Implement G.726 Asynchronous Payload types
•
CSCdx00509—T.38 Fax Relay Cisco AS5400 to Cisco AS5300 fails random packet loss
•
CSCdx71816—GSMFR SID frames not compatible between Cisco AS5400 and Cisco AS5300
•
CSCdx86537—T.38 fax fails with specific client modem/fax machines
•
CSCdy36798—V.92 client connect lots of V.34 to NAS (Cisco AS5400)
•
CSCdy66236—NEXPORT send SYN in response to LR
•
CSCdz15333—PT13/19 mismatch between Cisco AS5400 and Cisco AS5300 for generic SID
frames
•
CSCdz15984—SPE crash with command 0XF103 with FPT MGCP stress
•
CSCdz42089—Use V.110 user rate as indicated in E-bits
NextPort Caveats
•
CSCdz42832—New feature add to voice COT
•
CSCdz47520—Add new MOH features
•
CSCdz53097—7002 session abort at customer site
•
CSCdz53103—7002 session abort at customer site
•
CSCdz53978—NextPort reports V.23 rates incorrectly
•
CSCdz62066—T.38 fax fails from vendor fax machine
•
CSCdz72276—More than two pages cannot be sent (MPS not detected)
•
CSCdz75121—Runtime_Error_Ntf:Invalid end of digit timestamp2
•
CSCdz75341—Implement new codec G726IETF to fix G726 IETF/ITU bit ordering issue
•
CSCdz79123—Multiple page faxes are failing from Cisco AS5400 and Cisco AS5300 to vendor
gateway
•
CSCdz79222—COT fails when adding -6 dB attenuation with 128.0.1.14.spe
•
CSCdz79505—Voice call fails 50% on SPE with modem-passthrough
•
CSCdz88491—NextPort sends ABORTED rather than 8 with numeric result codes on
•
CSCea06476—SIP: Gateway has issues playing out DTMF to PSTN call leg (RTP-NTE)
•
CSCea07858—When VAD=off, background noise level is always - 120,8dbm
•
CSCea13318—7001 session abort at customer site
•
CSCea13329—7003 session abort at customer site
•
CSCea16527—Crosstalk on Cisco AS5400
•
CSCea23338—Jitter buffer and latency improvement in all codecs
•
CSCea36602—Session abort debug improvement effort
•
CSCea36877—Dynamic attenuation in echo canceller
•
CSCea38093—7002 session abort at customer site
•
CSCea43403—Disable 2100Hz notch filter for complex codec
•
CSCea46165—ECHAN CNG needs improvement
•
CSCea46223—Fax call fails due to delay between 1st MPS and 2nd MPS
•
CSCea54242—SPE needs to implement voice tuning API
•
CSCea81998—Run time error on E1 R2 on the Cisco AS5350
•
CSCea82278—Bell 103 fails to connect in modem passthrough
Caveats for Release 8.5
This section describes known problems and resolved caveats with NextPort Firmware and NextPort SPE
firmware.
•
Release 8.5 Cisco NextPort Firmware Caveats, page 18
•
Release 8.5 Cisco NextPort SPE Firmware Caveats, page 18
17
NextPort Caveats
Release 8.5 Cisco NextPort Firmware Caveats
•
Resolved Caveats for Cisco NextPort Firmware Version 8.5
•
Unresolved Caveats for Cisco NextPort Firmware Version 8.5
Resolved Caveats for Cisco NextPort Firmware Version 8.5
•
CSCea51409—Customer loses data in initial switch to framed mode
Unresolved Caveats for Cisco NextPort Firmware Version 8.5
•
CSCdv77113—No branch dynamic LI notifications when LI interval set
•
CSCdy15936—F201 NAKs for INVALID_PARAMETER_VALUE—Needs to add index of bad
parameter
•
CSCdy15943—Suppress NAKs for messages arriving after a session abort
•
CSCdw54654—Mail command first ACKd then NACKd
Release 8.5 Cisco NextPort SPE Firmware Caveats
•
Resolved Caveats for Cisco NextPort SPE Firmware Version 8.5
•
Unresolved Caveats for Cisco NextPort SPE Firmware Version 8.5
Resolved Caveats for Cisco NextPort SPE Firmware Version 8.5
•
CSCdz13053—DTMF digits sent from IP phone are reported invalid
•
CSCdy01417—No low level comfort noise with G.729 PT13
•
CSCdy23467—Setting minimum, initiate, maximum playout using the same parameters causes
20ms extra delay
•
CSCdz86217—T.38 fax fails during HS/LS transition
•
CSCea05796—T38 fax train failure between Cisco AS5400 and Cisco AS5300 with client machines
•
CSCea23864—Fax fails between client machines when calling through Cisco AS5400 to
Cisco AS5300
Unresolved Caveats for Cisco NextPort SPE Firmware Version 8.5
18
•
CSCdv85833—Need to implement G.726 asynchronous payload types
•
CSCdx00509—T.38 Fax Relay on Cisco AS5400 to Cisco AS5300 fails random packet loss
•
CSCdx71816—GSMFR SID frames not compatible between Cisco AS5400 and Cisco AS5300
•
CSCdx86537—T.38 fax fails with specific client modem/fax machines
•
CSCdy36798—V.92 client connect lots of V.34 to NAS (Cisco AS5400)
•
CSCdy66236—NEXPORT send SYN in response to LR
•
CSCdz15333—PT13/19 mismatch between 5400 and 5300 for generic SID frames
•
CSCdz15984—SPE Crash with Command 0XF103 with FPT MGCP stress
•
CSCdz42089—Use V.110 user rate as indicated in E-bits
•
CSCdz42832—New feature add to voice COT
NextPort Caveats
•
CSCdz47520—Add new modem on hold (MOH) features
•
CSCdz53097—7002 session abort at customer site
•
CSCdz53103—7002 session abort at customer site
•
CSCdz53978—NextPort reports V.23 rates incorrectly
•
CSCdz72276—No more than two pages can be sent (MPS not detected)
•
CSCdz75121—Runtime_Error_Ntf:Invalid end of digit timestamp2
•
CSCdz75341—Implement new codec G726IETF to fix G.726 IETF/ITU bit ordering issue
•
CSCdz79123—Multiple page faxes are failing from Cisco AS5350 and Cisco AS5400 to vendor
gateway
•
CSCdz79222—COT fails when adding -6 dB attenuation with 128.0.1.14.spe
•
CSCdz79505—Voice call fails 50% on SPE with modem passthrough
•
CSCdz88491—NextPort sends ABORTED rather than 8 with numeric result codes on
•
CSCea06476—SIP: Gateway has issues playing out DTMF to PSTN Call Leg (RTP-NTE)
•
CSCea07858—When VAD=off, background noise level always - 120,8dbm
•
CSCea13318—7001 session abort at customer site
•
CSCea13329—7003 session abort at customer site
•
CSCea16527—Crosstalk on Cisco AS5400
•
CSCea23338—Jitter buffer and latency improvement in all codecs
•
CSCea36602—Session abort debug improvement effort
•
CSCea36877—Dynamic attenuation in echo canceler
•
CSCea38093—7002 session abort at customer site
•
CSCea43403—Disable 2100Hz notch filter for complex codec
•
CSCea46165—ECHAN CNG needs improvement
•
CSCea46223—Fax call fails due to delay between 1st MPS and 2nd MPS
•
CSCea54242—SPE needs to implement voice tuning API
•
CSCea81998—Run time error on E1 R2 Cisco AS5350
•
CSCea82278—Bell 103 fails to connect in modem passthrough
Caveats for Release 8.3
This section describes known problems with NextPort Firmware and NextPort SPE firmware. If a
workaround is not provided, a solution is being developed.
•
Release 8.3 Cisco NextPort Firmware Caveats, page 19
•
Release 8.3 Cisco NextPort SPE Firmware Caveats, page 20
Release 8.3 Cisco NextPort Firmware Caveats
•
Resolved Caveats for Cisco NextPort Firmware Version 8.3
•
Unresolved Caveats for Cisco NextPort Firmware Version 8.3
19
NextPort Caveats
Resolved Caveats for Cisco NextPort Firmware Version 8.3
•
CSCdx69453—Voice and Fax-Relay information field size range from 0 is invalid
Unresolved Caveats for Cisco NextPort Firmware Version 8.3
•
CSCdy15936—F201 NAKs for INVALID_PARAMETER_VALUE needs to add index of bad
parameter
•
CSCdy15943—Suppress NAKs for arriving messages after a session abort
•
CSCdy62168—7004 session abort with SPE link-info enabled
•
CSCdz75121—Runtime_Error_Ntf:Invalid end of digit timestamp2
•
CSCdv67096—Bogus S-register values for voice service
•
CSCdv77113—No branch dynamic LI notifications when LI interval set
•
CSCdv85833—Need to implement G.726 asynchronous payload types
•
CSCdw54654—Mail command first issued an ACK then a NACK
•
CSCdx71816—GSMFR SID frames not compatible between Cisco AS5400 and Cisco AS5300
Release 8.3 Cisco NextPort SPE Firmware Caveats
•
Resolved Caveats for Cisco NextPort SPE Firmware Version 8.3
•
Unresolved Caveats for Cisco NextPort SPE Firmware Version 8.3
Resolved Caveats for Cisco NextPort SPE Firmware Version 8.3
•
CSCdz72379—IETF bit ordering is set to default for G.726
•
CSCdy78313—7002 session abort due to DSP RAM access
•
CSCdy29052—E2E delay does not return to initial value after background calls
•
CSCdy52984—Voice and Fax-Relay info field size range
•
CSCdx71846—G.726 interop w/non-Cisco gateway (GW) shows misordered 4 bit samples in
payload
•
CSCdy18321—Loud squeal when put on mute from IP phone.
•
CSCdz36559—Digit generate blocking is not free after session teardown.
•
CSCdy78995—CSMV/6 reports that values are too large for receive level
•
CSCdz41731—SPE crash 7001 session aborts with fax and packet loss
•
CSCdy60370—Disable DTMF in voice coding makes e2e delay longer
•
CSCdz51879—Double talk and NLP hangover counters adjusted to improve clipping problem at
customer sites
•
CSCdx70307—Incoming V.110 calls fail with client handset
•
CSCdy40314—Setting playout maximum to 20 ms causes higher end-to-end delay
Unresolved Caveats for Cisco NextPort SPE Firmware Version 8.3
20
•
CSCdx00509—T.38 Fax Relay from Cisco AS5400 to Cisco AS5300 fails random packet loss
•
CSCdx45215—Set top boxes fail to complete transaction because data hangs
NextPort Caveats
•
CSCdx63996—Jitter degradation is greater than 10% for G.723ar53 codec in 122-10.6.T versus
XB2 image
•
CSCdx86537—T.38 fax relay always fails between certain fax machines
•
CSCdy01417—No low level comfort noise with G.729 PT13
•
CSCdy02866—Cisco AS5850 MGCP: Off-net to on-net fax sends blank pages
•
CSCdy09675—Cisco AS5400 and Cisco AS5350 gateways fail fax interoperability test using fax
protocol T.38
•
CSCdy23467—Setting minimum, initiation, maximum playout parameters the same causes 20 ms
extra delay
•
CSCdy33137—SPE crashed: %NP_SSM-3-RUNTIME_ERROR: Running FPT stress 20 ms red.
•
CSCdy36798—V.92 client connect lots of V.34 to NAS (Cisco AS5400)
•
CSCdy37013—S54=64 (parity over echo cancellation or EC) makes EC fail for dialout calls
•
CSCdy66236—Cisco NextPort sends SYN in response to LR
•
CSCdy86134—7001 session abort at customer site
•
CSCdz13053—DTMF digits sent from IP phone are reported invalid
•
CSCdz15333—PT13/19 mismatch between Cisco AS5400 and Cisco AS5300 for generic SID
frames
•
CSCdz15984—SPE crash with command 0XF103 with FPT MGCP stress
•
CSCdz39198—Show port fax log fails to verify change when ECM is enabled or disabled
•
CSCdz42089—Use V.110 user rate as indicated in E-bits
•
CSCdz42832—New feature add to voice COT
•
CSCdz47520—Add new Modem on Hold (MOH) features
•
CSCdz49413—Voice tuning API
•
CSCdz53097—7002 session abort at customer site
•
CSCdz53103—7002 session abort at customer site
•
CSCdz53440—Specific client modem interoperability link instability
•
CSCdz56920—Specific client modem identity and bit rate mask workaround required
•
CSCdz75291—Far end echo reported as 0
•
CSCdz75341—Implement new codec, G.726IETF, to fix G.726 IETF/ITU bit ordering issue
•
CSCdz79222—COT fails when adding -6 dB attenuation with 128.0.1.14.spe
•
CSCuk40239—SPE crash and core seen intermittently
Finding Software Bugs
If you have an account with Cisco.com, you can use Bug Navigator II to find caveats of any severity for
any Cisco software release. You can reach Bug Navigator II on CCO at
Service & Support: Online Technical Support: Software Bug Toolkit
Or at
http://www.cisco.com/cgi-bin/Support/Bugtool/launch_bugtool.pl
21
Related Links
Related Links
For further information about Cisco NextPort Firmware and Cisco IOS Software, refer to the following
related sources.
Related Topic
Document Title
AT commands
AT Command Set and Register Summary for NextPort Universal
Digital Signal Processor Platforms
How to configure QoS for Cisco features.
Cisco IOS Quality of Service Solutions Configuration Guide
Cisco IOS Release 12.3 mainline roadmap
Cisco IOS Release 12.3 Configuration Guides and Command
References
Cisco AS5350 NextPort platform
Cisco AS5350 documentation index
Cisco AS5400 NextPort platform
Cisco AS5400 documentation index
Cisco AS5800 NextPort platform
Cisco AS5800 documentation index
Cisco AS5850 NextPort platform
Cisco AS5850 documentation index
How to configure your Cisco router or access server to Cisco IOS Voice Configuration Library, Release 12.3
support voice, video, and fax applications
How to use Cisco IOS commands to support voice,
video, and fax applications.
Cisco IOS Voice, Video, and Fax Command Reference, Release 12.3
How to use Echo analysis for VoIP
Echo Analysis for Voice over IP
How to use the extended G.168 echo canceller
Enhanced ITU-T Echo Cancellation
How to configure NextPort SPE firmware
NextPort SPE Release Notes
Information about the NextPort dual-filter G.168 echo NextPort Dual-Filter G.168 Echo Canceller Whitepaper
canceller
Understanding NextPort voice tuning
NextPort Voice Tuning Whitepaper
How to use Cisco MGCs
Cisco Media Gateway Controllers
How to configure NextPort SPE firmware
NextPort SPE Release Notes
How to configure MGCP
Configuring Media Gateway Control Protocol and Related
Protocols
How to configure the digital signal processor farm
Configuring the DSP Farm
How to configure QoS for voice applications
Configuring Quality of Service for Voice
How to configure voice ports
Configuring Voice Ports, Release 12.2
Enabling basic management protocols on Cisco access Enabling Management Protocols: NTP, SNMP, and Syslog
platforms
Third-party extended G.168 echo canceller (EC)
Enhanced ITU-T G.168 Echo Cancellation
Cisco IOS Release 12.3
Release notes index, Cisco IOS Release 12.3
Downloading NextPort SPE firmware
Software Download
How to use the spe command
SPE and Firmware Download Enhancements
22
Obtaining Documentation
Obtaining Documentation
These sections explain how to obtain documentation from Cisco Systems.
World Wide Web
You can access the most current Cisco documentation on the World Wide Web at this URL:
http://www.cisco.com
Translated documentation is available at this URL:
http://www.cisco.com/public/countries_languages.shtml
Documentation CD-ROM
Cisco documentation and additional literature are available in a Cisco Documentation CD-ROM
package, which is shipped 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
through an annual subscription.
Ordering Documentation
You can order Cisco documentation in these ways:
•
Registered Cisco.com users (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 Systems Corporate Headquarters (California, U.S.A.) at 408 526-7208 or, elsewhere
in North America, by calling 800 553-NETS (6387).
Documentation Feedback
You can submit comments electronically on Cisco.com. In the Cisco Documentation home page, click
the Fax or Email option in the “Leave Feedback” section at the bottom of the page.
You can e-mail your comments to [email protected].
You can submit your comments by mail by using the response card behind the front cover of your
document or by writing to the following address:
Cisco Systems
Attn: Document Resource Connection
170 West Tasman Drive
San Jose, CA 95134-9883
23
Obtaining Technical Assistance
We appreciate your comments.
Obtaining Technical Assistance
Cisco provides Cisco.com as a starting point for all technical assistance. Customers and partners can
obtain online documentation, troubleshooting tips, and sample configurations from online tools by using
the Cisco Technical Assistance Center (TAC) Web Site. Cisco.com registered users have complete access
to the technical support resources on the Cisco TAC Web Site.
Cisco.com
Cisco.com is the foundation of a suite of interactive, networked services that provides immediate, open
access to Cisco information, networking solutions, services, programs, and resources at any time, from
anywhere in the world.
Cisco.com is a highly integrated Internet application and a powerful, easy-to-use tool that provides a
broad range of features and services to help you with these tasks:
•
Streamline business processes and improve productivity
•
Resolve technical issues with online support
•
Download and test software packages
•
Order Cisco learning materials and merchandise
•
Register for online skill assessment, training, and certification programs
If you want to obtain customized information and service, you can self-register on Cisco.com. To access
Cisco.com, go to this URL:
http://www.cisco.com
Technical Assistance Center
The Cisco Technical Assistance Center (TAC) is available to all customers who need technical assistance
with a Cisco product, technology, or solution. Two levels of support are available: the Cisco TAC
Web Site and the Cisco TAC Escalation Center.
Cisco TAC inquiries are categorized according to the urgency of the issue:
•
Priority level 4 (P4)—You need information or assistance concerning Cisco product capabilities,
product installation, or basic product configuration.
•
Priority level 3 (P3)—Your network performance is degraded. Network functionality is noticeably
impaired, but most business operations continue.
•
Priority level 2 (P2)—Your production network is severely degraded, affecting significant aspects
of business operations. No workaround is available.
•
Priority level 1 (P1)—Your production network is down, and a critical impact to business operations
will occur if service is not restored quickly. No workaround is available.
The Cisco TAC resource that you choose is based on the priority of the problem and the conditions of
service contracts, when applicable.
24
Obtaining Technical Assistance
Cisco TAC Web Site
You can use the Cisco TAC Web Site to resolve P3 and P4 issues yourself, saving both cost and time.
The site provides around-the-clock access to online tools, knowledge bases, and software. To access the
Cisco TAC Web Site, go to this URL:
http://www.cisco.com/tac
All customers, partners, and resellers who have a valid Cisco service contract have complete access to
the technical support resources on the Cisco TAC Web Site. The Cisco TAC Web Site requires a
Cisco.com login ID and password. If you have a valid service contract but do not have a login ID or
password, go to this URL to register:
http://www.cisco.com/register/
If you are a Cisco.com registered user, and you cannot resolve your technical issues by using the Cisco
TAC Web Site, you can open a case online by using the TAC Case Open tool at this URL:
http://www.cisco.com/tac/caseopen
If you have Internet access, we recommend that you open P3 and P4 cases through the Cisco TAC
Web Site.
Cisco TAC Escalation Center
The Cisco TAC Escalation Center addresses priority level 1 or priority level 2 issues. These
classifications are assigned when severe network degradation significantly impacts business operations.
When you contact the TAC Escalation Center with a P1 or P2 problem, a Cisco TAC engineer
automatically opens a case.
To obtain a directory of toll-free Cisco TAC telephone numbers for your country, go to this URL:
http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml
Before calling, please check with your network operations center to determine the level of Cisco support
services to which your company is entitled: for example, SMARTnet, SMARTnet Onsite, or Network
Supported Accounts (NSA). When you call the center, please have available your service agreement
number and your product serial number.
This document is to be used in conjunction with the documents listed in the “Related Links” section.
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of Cisco Systems, Inc.; Changing the Way We Work, Live, Play, and Learn, and iQuick Study are service marks of Cisco Systems, Inc.; and Aironet,
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are registered trademarks of Cisco Systems, Inc. and/or its affiliates in the U.S. and certain other countries.
All other trademarks mentioned in this document or Web site are the property of their respective owners. The use of the word partner does not imply
a partnership relationship between Cisco and any other company. (0304R)
25
Obtaining Technical Assistance
Copyright © 2002-2003, Cisco Systems, Inc.
All rights reserved.
26