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Release Notes for Cisco NextPort SPE Firmware Version 10.x.x

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Combined Release Notes for Cisco NextPort SPE Firmware Version 10.x.x

Table Of Contents

Combined Release Notes for Cisco NextPort SPE Firmware Version 10.x.x

Cisco NextPort SPE Firmware and Dial Feature Card Overview

Cisco NextPort SPE Firmware Features

New Features In Version 10.x.x SPE Firmware

NextPort Dual-Filter G.168 Echo Canceller

Cisco IOS Software Compatibility

NextPort SPE Firmware Caveats

Caveats for Release 10.9

Resolved 10.9 Caveats

Caveats for Release 10.8

Resolved 10.8 Caveats

Caveats for Release 10.7

Resolved 10.7 Caveats

Open 10.7 Caveats

Caveats for Release 10.6

Resolved 10.6 Caveats

Caveats for Release 10.4.1

Resolved 10.4.1 Caveats - NextPort SPE Firmware

Caveats for Release 10.4.0

Resolved 10.4.0 Caveats - NextPort SPE Firmware

Caveats for Release 10.3.1

Resolved 10.3.1 Caveats - NextPort SPE Firmware

Caveats for Release 10.2.2

Resolved 10.2.2 Caveats

Finding Software Bugs

Related Links

Obtaining Documentation

Cisco.com

Product Documentation DVD

Ordering Documentation

Documentation Feedback

Cisco Product Security Overview

Reporting Security Problems in Cisco Products

Product Alerts and Field Notices

Obtaining Technical Assistance

Cisco Technical Support & Documentation Website

Submitting a Service Request

Definitions of Service Request Severity

Obtaining Additional Publications and Information


Combined Release Notes for Cisco NextPort SPE Firmware Version 10.x.x


Revised: March 21, 2008
Version 0.10.9.0

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

Cisco NextPort SPE Firmware Features

New Features In Version 10.x.x SPE Firmware

Cisco IOS Software Compatibility

NextPort SPE Firmware Caveats

Related Links

Obtaining Documentation

Documentation Feedback

Cisco Product Security Overview

Product Alerts and Field Notices

Obtaining Technical Assistance

Obtaining Additional Publications and Information

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


Note To use the NextPort SPE Firmware Release Notes feature, you must upgrade from the default NextPort SPE firmware code that runs with Cisco IOS software to NextPort SPE firmware 10.x. Release 10.x.x can be downloaded from the Software Center on Cisco.com.


For more information, refer to the "Related Links" section.

Cisco NextPort SPE Firmware Features

Table 1 contains feature content for Version 10.x.x.

Table 1 Cisco NextPort SPE Firmware Version 10.x.x Features

Cisco NextPort SPE Firmware Version
New NextPort SPE Firmware Features

10.9

Maintenance release. See the "Caveats for Release 10.9" section.

10.8

Maintenance release. See the "Caveats for Release 10.8" section.

10.7

Maintenance release. See the "Caveats for Release 10.7" section.

10.6

Maintenance release. See the "Caveats for Release 10.6" section.

10.4.1

Maintenance release. See the "Caveats for Release 10.4.1" section.

10.4.0

Maintenance release. See the "Caveats for Release 10.4.0" section.

10.3.1

Maintenance release. See the "Caveats for Release 10.3.1" section.

10.2.2

Initial release. This version of NextPort SPE firmware supports the dual-filter G.168 echo canceller. See the "NextPort Dual-Filter G.168 Echo Canceller" section. See also the "Caveats for Release 10.2.2" section.


New Features In Version 10.x.x SPE Firmware

This section contains feature information for NextPort SPE firmware version 10.x.x.

NextPort Dual-Filter G.168 Echo Canceller

Dual-filter G.168 echo canceller capability has been added to the CSMV6 dial feature card (DFC) for NextPort platforms. The NextPort dual-filter G.168 echo canceller (EC) improves voice quality in VoIP connections by providing relatively less residual echo leakage, better non-linear processing (NLP) timing, less clipping, and better comfort noise generation (CNG) in most environments.

The dual-filter G.168 echo canceller features two concurrently operating adaptive filters (which control echo tail coverage) and two double-talk detection functions. In addition, the comfort noise model uses "Hoth noise" spectrum shaping to better replicate the true noise spectrum.

The NextPort dual-filter G.168 echo canceller uses the same voice-tuning (VCtune) interface for configuring voicecap parameters as the Cisco-proprietary G.164 echo canceller. Adjusting the dual-filter echo canceller is carried out by using a voicecap or by using the Cisco IOS command-line interface (CLI) during configuration.

For more information about the dual-filter G.168 echo canceller, see the following documents:

NextPort Voice Tuning and Background Noise Statistics with NextPort Dual-Filter G.168 Echo Cancellation

NextPort Dual-Filter G.168 Echo Canceller Whitepaper

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

10.9

This SPE image has been tested with Cisco IOS Release 12.4(18).

10.8

This SPE image has been tested with Cisco IOS Release 12.4(3)T and 12.4(7)T.

10.7

This SPE image has been tested with Cisco IOS Release 12.3(7)T and 12.3(10).

10.6

10.4.1

10.4.0

10.3.1

10.2.2


NextPort SPE Firmware Caveats

This section describes known problems and resolved caveats with NextPort firmware and NextPort SPE firmware:

Caveats for Release 10.9

Caveats for Release 10.8

Caveats for Release 10.7

Caveats for Release 10.6

Caveats for Release 10.4.1

Caveats for Release 10.4.0

Caveats for Release 10.3.1

Caveats for Release 10.2.2

Caveats for Release 10.9

Resolved 10.9 Caveats

CSCsg66906: SPE crashes when modemcap is applied

Symptom: SPE crashes when modemcap applied to modems in a Cisco AS5400.

Condition: This was found on a Cisco AS5400 running Cisco IOS12.4.7b image.

Workaround: There is no workaround.

CSCsh25948: NextPort connects at a different modulation than specified in s64

Symptom: NextPort seems to connect with a different modulation than specified in s64 register setting, by using the S64 register, NextPort is forced to try ONLY the standard specified in S64. The only exception is if S64 is set to 1(V.90) where, due to the V.8 specification, a fallback to V.34 is allowed.

Conditions: Dailout using NextPort with a modemcap that has s64 set.

Workaround: There is no workaround other than not using s64 in the modemcap and having the default automode enabled.

CSCsi47380: NextPort not handling non-zero CC field in RTP header correctly

Symptom: NextPort does not handle non-zero CC field in RTP header correctly.

Conditions: Non-zero values in the CC field of the RTP header.

Workaround: There is no workaround.

Caveats for Release 10.8

Resolved 10.8 Caveats

CSCse82173: Invalid DTMF relay sent from Cisco AS5850 to PSTN

Symptoms: The Cisco AS5850 is sending the incorrect duration for DTMF digit relay to the PSTN. Unable to measure DTMF digit relay locally on the Cisco AS5850.

Conditions: Trying to measure duration played out by 5850 towards PSTN side. The setup is as follows:

[A] ----{ip}----- 5850 ----{tdm}--- [B]

The Cisco 5850 is controlled by a CA using MGCP.

[A] sends 2833 telephony events with Event Duration of 800 for 3 RTP packets with 'End of Event' (which should be equivalent to 100msec). At [B], the customer put on an analyzer and measured digit duration to be around 50-55msec.

Workaround: There is no workaround.

CSCsf08167: Noise heard when barging into a prompt

Symptoms: A sound is heard when barging into vxml prompt by saying the option.

Conditions: This only seems to happen while barging in with voice not DTMF.

Workaround: There is no workaround.

CSCsf09206: Clicking noise heard at beginning of VXML script

Symptoms: A clicking sound is heard at the beginning of the vxml script on the Cisco AS5400.

Conditions: Calls are not lost and clicking sound does not repeat later in the call.

Workaround: There is no workaround.

Caveats for Release 10.7

Resolved 10.7 Caveats

CSCeg00452: Slip call does not work with NP after upgrade to Cisco IOS 12.3(9)

Symptoms: The customer is running Slip on POS modem:

CPOS (POS modem) <---->PSTN <---> AS5350 <----> CXI (POS server)

The connection ends because the CPOS sent a packet that never arrived at the CXI server. Because the CPOS does not retry in this case, it times out when the CXI server does not respond (since it did not get the packet) and ends the connection.

Workaround: This problem is not seen on the Cisco 3725 running Cisco MICA. Use non-NextPort-based platform like the Cisco 3725.

CSCsa88459: T.38 may fail with certain fax machines due to missing EOLs

Symptoms: T.38 fax may fail with certain third party fax servers communicating with certain client fax machines due to missing EOLs.

Conditions: This occurs only when third party fax servers and certain client fax machines with non-ECM calls are used.

Workaround: Use ECM for fax calls.

CSCsa82291: Digit redundancy pkts may be interrupted with voice packets

Symptoms: Not all DTMF digits are being decoded correctly by ASR server.

Workaround: There is no workaround.

CSCsd49012: Import CSM Protocol Interop Failure with MNP Fix to CSMv6

Symptoms: Layer 2 error control protocol MNP window size failure requires Mindspeed fix from CSMv12 to be ported into CSMv6. WIthout the protocol correction, NextPort is unable to interoperate with client transactions using MNP4.

Conditions: This problem is experienced with legacy MNP client Ryder16. Mindspeed has ported an initial correction into the v6 which allows the protocol to establish and exchange data but if at any time there is an abnormal disconnect the only recovery mechanism is to reload the SPE.

At the request of Mindspeed, a subsequent defect for the protocol failures will be chained from this defect to address each aspect individually. See CSCsd49012.

Workaround: Replace the Cisco AS5350 and Cisco AS5400s with a Cisco 2811 with CSMv12. No NextPort workaround exists.

CSCsc51697: Modem CSR and abnormal disconnect rate too high

Symptoms: Modem connection performance needs to be improved including call success rate and abnormal disconnection rate with some particular client modems.

Workaround: There is no workaround.

CSCse01122: NextPort does not reply with OK in the first try after using +++ and ath

Symptoms: NextPort does not reply with "OK" in the first try after using the +++ and ath commands.

Conditions: After entering the ath command, there is initially no modem response to additional commands. Entering the additional command a second works.

Workaround: There is no workaround.

CSCse31695: NextPort ignores s7 and s37 register settings

Symptoms: If the answering modem (or called modem) does not answer the call (go OFFHOOK), the calling Nextport modem will continue to ring endlessly and will not terminate the call with a "NO ANSWER."

Conditions: Access server platforms with NextPort modem (Cisco AS5350, Cisco AS5400, and Cisco AS5850) dialing a modem that does not answer will never time out. This problem is seen in Cisco IOS software release 12.4(7a) with SPE version np.0.10.3.1.spe and np.0.10.6.0.spe.

For example, if you enter ats7=12s37=12dt1234567890, the request will never time out if the called modem does not answer the call (go offhook).

Workaround: There is no workaround

CSCsb21942: Extend T.38 TX level range

Symptoms: Faxes are not coming through customer networks because T.38 levels change throughout the Cisco AS5400 Gateways. Calls enter from the PSTN at the correct signal levels and exit to the PSTN with the incorrect levels.

Conditions: This only happens to fax calls and looks like the gateways are changing the level without any configuration to do so. By using the Telecom Faxright service it is possible to get a report on the Signal levels and all T.38 Fax calls are reported to have a level of -10.5dBm. The correct level should be about -17.5dBm. It has been confirmed that the correct levels are seen on the incoming call but leave with the incorrect levels. Voice calls are fine and a test 2khz tone was used to verify the levels are not being modified by the gateways. When using the test tone and adjusting the output attenuation the levels are adjusted on the output side which is correct. This problem is only experienced with T.38 Fax calls with a level of -10.5dBm and can be replicated every time with a fax test. Could there be a problem in the IOS code that limits or sets the Signal Level to -10.5dBm and not allowing it to be the level that it receives? The signal level should be -17.5dbm. Hardware is Cisco AS5400s with E1 SS7 circuits to the Telecom (carrier). The Cisco IOS software version that is running on these access servers is 12.3(8)T8.

Workaround: There is no workaround.

Open 10.7 Caveats

There are no open caveats in this release.

Caveats for Release 10.6

Resolved 10.6 Caveats

CSCsa74947: SPE 7002 session aborts seen on a Cisco AS5400 doing modem dial up calls

Symptoms: Modem calls are dropped and the following error message is seen:

%NP_SSM-3-RUNTIME_ERROR: SSM(6/64): Session Runtime Error Code = 6, Recovery
Action = 2.

Conditions: This error is seen on Cisco AS5400s running the Cisco IOS Release 12.3 (20040913:160920) software image with SPE version 8.11.1.

Workaround: There is no workaround.

CSCef88319: DTMF tones being heard when DTMF relay is configured

Symptoms: DTMF tones being heard in the RTP stream when DTMF relay is configured.

Workaround: There is no workaround.

CSCsa57457: Cisco AS5400 using fax relay is corrupting the t30 DCN message

Symptoms: Fax relay t30 DCN message is being corrupted on egress from AS5400. This stops certain faxes and fax severs from working correctly.

Conditions: This problem occurs during fax relay between a Cisco 3745 and a Cisco AS5400.

Workaround: There is no workaround.

CSCsa51298: ISDN data call fails over Clear channels on MGCP Controlled TGW

Symptoms: Calls that require a clear channel codec on a Cisco Voice Gateway controlled with MGCP by a Call Agent (MGC) may experience user failure.

Conditions: This problem occurs only to calls that require the clear channel codec.

Workaround: There is no workaround.

CSCeh14211: Slip with duplicate packets

Symptoms: Previous SLIP calling client TFTP requests get dumped from a Cisco AS5350 when the new SLIP calling client is connected to the same async interface.

Workaround: After each file transfer, enter the clear spe command.

CSCsa95120: Intermittent one-way voice from SIP to PSTN in the Cisco AS5400

Symptoms: One-way voice on from SIP to PSTN (the PSTN user cannot hear the SIP user) happens randomly for calls going through a Cisco AS5400 gateway; the call is established properly and both parties can hear each other, but eventually one-way voice periods of 10-20 seconds occur from the IP user to the PSTN user.

Conditions: No packets are lost in the de-jitter buffer during faulty calls.

Workaround: There is no workaround.

CSCsb39054: RTP Comfort Noise (CN) frame being sent when VAD disabled

Symptoms: In the Session Description Protocol (SDP) of an "Invite" message, there is no advertisement of payload type 13 or 19 for comfort noise. The media information in the SIP 200 OK shows that no comfort noise was negotiated. However, in the RTP media stream, comfort noise packets are being propagated.

Conditions: This problem occurs on a Cisco AS5400HPX and VAD is disabled on the VoIP dial peers.

Workaround: There is no workaround.

CSCsb00457: Nextport fails to dial out with dial modifier and modemcap applied

Symptoms: Nextport modems do not connect to V.22bis/2400bps modems when in originate mode. The Nextport state will go to connect, then link, and then it will disconnect.

Conditions: Setting up s29=4 and s64=6 to force it to do V.22bis only, turning off EC (s23=s24=0) and setting max or minimum connect speed to 2400 bps (s30=s31=2400) has no effect.

Workaround: There is no workaround.

CSCsa91021: NextPort does not prefix CONNECT result code with CR LF

Symptoms: When dialing out using a NextPort modem, the CONNECT result code is not prefixed with a <CR><LF> sequence. As a result, the following occurs:

The ATDT dialstring command on the dialing terminal may be overwritten.

An application expecting the CONNECT result code to be prefixed with <CR><LF> may fail to recognize the CONNECT

An application using Windows TAPI may fail to recognize the vendor-specific CONNECT information (speed, compression, etc.)

Workaround: Modify the dialing application (or TAPI .inf file) so that it does not look for the <CR><LF> sequence prior to the CONNECT.

CSCsc09596: Voice dropouts with G729abr8 codec

Symptoms: When using the g729abr8 codec with Voice Activity Detection (VAD), users may experience an approximate -10dB decrease in VAD capability possibly triggering Comfort Noise Generation (CNG) where voice activity should be present.

Conditions: This problem occurs in voice gateway to voice gateway environments using G729abr8 codecs in their dial peers. This is specifically present in the 0.10.4.0 & 0.10.5.0 SPE code versions.

Workaround: There is no workaround.

CSCsc11992: MNP may drop outgoing data

Symptoms: Nextport modem does not relay a second packet over MNP to an INGENICO ETP if this packet arrives more than one second after the first one.

Workaround: Use a Cisco Mica-based platform instead.

CSCsc13646: Infinite Session Hang in EC mode - all modulations - No EC Timer Expiry

Symptoms: NextPort hangs in Error Control Negotiation and never progresses to Steady State when a non error control client tries to connect to Nextport with error control enabled. It is likely that Nextport's timer for error control fails to expire.

Conditions: This problem occurs when a client with no EC forces a connection with Nextport with EC-enabled.

Workaround: There is no workaround.

Caveats for Release 10.4.1

Resolved 10.4.1 Caveats - NextPort SPE Firmware

Resolved 10.4.1 Caveats - NextPort SPE Firmware

CSCsa57457: T.30 DCN message corrupted leaving TGW

Symptoms: Issue was found to be due to race condition between ISDN call-teardown and DCN message being sent. This change allows the DCN message latency to be reduced via an API.

Conditions: Fax relay between 3745 and AS5400. Certain faxes fail.

Workaround: There is no workaround.

Caveats for Release 10.4.0

Resolved 10.4.0 Caveats - NextPort SPE Firmware

Resolved 10.4.0 Caveats - NextPort SPE Firmware

CSCee95794: COT fails with loopback mode

Symptoms: COT test fails with loopback and contest modes in 12.3(9.8)T.

Workaround: There is no workaround.

CSCeg00452: Slip does not work with nextport after upgrade to 12.3(9) IOS image

Symptoms: A Cisco AS5400 discards SLIP traffic received from an Async dialup client when the IP destination address contains 192.

Conditions: The Cisco AS5400 is configured for Async SLIP dial-in. For example:

async mode interactive on the Group-Async interface

autoselect slip on the TTY lines

Workaround: Give the destination host to which Async SLIP dialup clients send IP traffic an IP address which does not contain 192.

CSCeg69837: FAX passthrough fails after few days - NSE changed

Symptoms: When the Cisco 5350 voice gateway is receiving faxes from PSTN and is connecting to an ATA 186, the fax transmission may start failing after a few days.

Conditions: This was reported on a Cisco 5350 running Cisco IOS Release 12.3(11)T The values sent by the Cisco 5350 when the fax does not work is an NSE value different from 100.

Workaround: Implement voice class and assign a higher priority to g729 and the next highest priority to g711.

CSCsa79308: Cisco AS5400 negative noise bias issue with Cisco SIP phones

Symptoms: Cisco AS5400 running Cisco IOS 123-4T6 might have voice quality issue (noise) with Cisco IP (SIP) phones 7960.

Workaround: There is no workaround.

CSCsa51327: Cisco AS5400: Nextport:%NP_EST-6-RUNTIME_ERR_NTF

Symptoms: When upgrading to SPE version 10.2.2, the following messages are seen from time to time:

Jan  3 17:30:26.882: %NP_EST-6-RUNTIME_ERR_NTF: (NP address 4/0/0/5), SessionID=
0x01D0, Error=INVALID_SPE_RESPONSE, Data format=ASCII, Data len=73, Data=GWSERV_

Workaround: There is no workaround.

CSCef42203: Fax passthrough fax success rate only 77%

Symptoms: Testing w/ multiple fax passthrough (FPT) calls on one SPE shows degraded fax success rates when compared to previous code releases.

Conditions: Basic testing info:

OS (for all tests recorded here):12.3(20040722:195955) [daqi-8_11_2_rel 100]. Test run using QSA, generate 6 FPT calls at 14400, ECM, 10 iterations

0.8.8.1   100% CSR, 100% FSR
0.8.9.1   100% CSR  100% FSR
0.8.10.0  100% CSR  80% FSR 9 fallbacks to 12000, 6 successful
0.8.11.1  100% CSR  81% FSR- 12 fallbacks to 12000, 5 successful, 1 fallback to 9600
0.8.11.2  100% CSR  77% FSR   10 fallbacks to 12000, 3 successful, 3 fallbacks to 
9600-0 successful

Workaround: Drop back to earlier code release which did not see problem. Keep in mind that the problem was seen only w/ 6 FPT calls running on one SPE, which has a relatively low chance of occurrence outside of a testing environment.

CSCeg44676: Need proper dB level output on Nextport DSP platforms

Symptoms: Incorrect Signal Levels are shown in dBm shown in the show spe fax active x y command output.

Conditions: This is seen on Cisco AS5400, Cisco AS5850, and Cisco AS5350 using T37 onramp.

Workaround: Use GLCOMM or other test equipment to measure

CSCsa80498: NextPort cannot train in Bell103 when dialing out

Symptoms: A NextPort modem is unable to train in Bell103 modulation when dialing out.

Workaround: Downgrade to NextPort 7.11 firmware. Use the following modem configuration

s64=11s15=0s16=0s17=0s21=0s22=0s23=0s24=0

CSCef78700: No Circuit Tone test failed in China 1s and Japans SIT tone

Symptoms: This issue is due to the support of Bell103 first introduced in 8.11.1.SPE. We added a bit to support this feature, but broken No Circuit Tone in China 1's and Japan SIT tone. The root cause has been identified. Need open this DDTS to track the fix. This likely will not affect US users.

Conditions: SPE firmware versions 8.11.1 to 10.2.2 will have this issue.

Workaround: There is no workaround.

Caveats for Release 10.3.1

This section describes known problems and resolved caveats with NextPort Firmware and NextPort SPE firmware.

Resolved 10.3.1 Caveats - NextPort SPE Firmware

Resolved 10.3.1 Caveats - NextPort SPE Firmware

CSCeg37789: Cannot detect digit 0 in H245 Relay w/g723ar53,ar65,r53,r63 codecs

Symptoms: The Cisco AS5350, Cisco AS5400, and Cisco AS5850 gateways are unable to generate the first several DTMF digits in DTMF relay with g723ar53, g723ar63, g723r53, or g723r63 codecs configured.

Conditions: This occurs with NextPort firmware version 4.24.10.3 (version obtained with show next mm) or SPE firmware version 10.3 (version obtained with show spe ver) with g723ar53, g723ar63, g723r53, or g723r63 codec configured and DTMF relay is used.

Workaround: Use an SPE version other than 10.3. SPE firmware can be downloaded from the following link: http://www.cisco.com/cgi-bin/tablebuild.pl/nextport-spe

CSCeg37856: Failed Voice calls during E1R2 Mixed Codec Voice Stress.

Symptoms: Cisco AS5400 gateways are seeing a higher than normal amount of voice call failures (No path confirm [first & subsq]) while testing in E1R2.

Conditions: This occurs on the Cisco AS5400 with NextPort firmware version 4.24.10.3 (version obtained with show next mm) or SPE firmware version 10.3 (version obtained with show spe ver) with mixed codecs, VAD on or off, E1 with R2-digital or R2-compelled.

Workaround: Use an SPE version other than 10.3. SPE firmware can be downloaded from the following link: http://www.cisco.com/cgi-bin/tablebuild.pl/nextport-spe

CSCea86206: NextPort connect at lower speeds than MICA for specific line condition

Symptoms: When client modems dial into a Cisco AS5400 via certain dual-codec circuit paths, the modems may train at a significantly lower data rate than is seen when a Cisco AS5300 is used.

Workaround: There is no workaround.

CSCeb61464: Reduced throughput with ARQ blocksize <= 128

Symptoms: Need to change the default for selective reject to enabled.

Conditions: This is related to the original addition of the selective reject code, which had the default setting as disabled. This was fixed in CSCdx03968. On a Cisco AS5xxx with nextport technology, reduced throughput may observed in the modem service with certain client modems.

Workaround: There is no workaround.

CSCec62153: VAD threshold with G729r8 packets is incorrect

Symptoms: The default VAD threshold for a call should be at -38dbm. However, while running with codec G729r8 on a VoIP session, the VAD seems to disengage at a value lower than -38dbm.

Conditions: The bandwidth used for the session may be higher than typically expected with VAD enabled.

Workaround: The impact seems to be minimized when using the G729br codec instead.

CSCee02179: Nextport unable to trainup with USR client under certain line condition

Symptoms: Under certain pots line conditions, USR client modems are unable to trainup with NextPort modems.

Conditions: This issue is strictly due to the combination of certain PBX POTS lines and old USR client modem.

Workaround: Change the POTS line or change the USR modem to the latest version.

CSCee53791: EOP/MPS not received on S&F onramp call

Symptoms: Onramp store and forward fax calls are failing in 12.3(7)T and the same calls are working in 12.2(15)XB5. Single page fax call shows up at the mail server but the fax machine shows transmission error. For multiple page fax calls, only the first page goes through.

Workaround: There is no workaround.

CSCee71851: Mis-detection of V21 message after T4 high speed data transfer

Symptoms: Mis-detection of V.21 messages after T.4 high speed data transfer with low signal from line.

Workaround: Apply a 6db boost to the receiving signal.

CSCee75839: 7001 session abort

Symptoms: 7001 session abort notices with auto recovery are seen once a week.

Workaround: There is no workaround.

CSCee95794: COT fails with loopback mode

Symptoms: COT test fails with loopback and contest modes in 12.3(9.8)T

Workaround: There is no workaround.

CSCef25724: DSP stops requesting data for up to 90 seconds

Symptoms: In certain IVR environments, NextPort DSPs may pause playout for excessive periods of time.

Workaround: There is no workaround.

Caveats for Release 10.2.2

Resolved 10.2.2 Caveats

Resolved 10.2.2 Caveats

NextPort SPE Firmware

CSCed39443: New 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

CSCee26845: Echo canceller convergence delay with NextPort SPE firmware version 8.8.1

CSCee11457: POST aborts with NextPort SPE firmware version 8.8.1 in manufacturing test workaround

CSCee43381: Problem with enabling Fax Relay packet loss concealment

CSCee69375: VoIP calls with G.711 ulaw VAD on generating excessive silence packets

CSCef15214: Fax on-ramp calls fail with T.38 fax statistics

NextPort Firmware (i960)

CSCee89086: Commit for dual-filter G.168 echo canceller (i960)

CSCec50774: Need to enhance T.38 statistics (i960)

CSCef20925: Use FAXCAP to avoid false CNG tone detection (i960)

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 the following URL:
http://www.cisco.com/cgi-bin/Support/Bugtool/launch_bugtool.pl

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 support voice, video, and fax applications

Cisco IOS Voice Configuration Library, Release 12.3

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 voice tuning and background noise statistics and the dual-filter G.168 echo canceller

NextPort Voice Tuning and Background Noise Statistics with NextPort Dual-Filter G.168 Echo Cancellation

Information about the dual-filter G.168 echo canceller

NextPort Dual-Filter G.168 Echo Canceller Whitepaper

How to configure NextPort SPE firmware

NextPort SPE Release Notes

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 platforms

Enabling Management Protocols: NTP, SNMP, and Syslog

Extended G.168 echo canceller

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


Obtaining Documentation

Cisco documentation and additional literature are available on Cisco.com. This section explains the product documentation resources that Cisco offers.

Cisco.com

You can access the most current Cisco documentation at this URL:

http://www.cisco.com/techsupport

You can access the Cisco website at this URL:

http://www.cisco.com

You can access international Cisco websites at this URL:

http://www.cisco.com/public/countries_languages.shtml

Product Documentation DVD

The Product Documentation DVD is a library of technical product documentation on a portable medium. The DVD enables you to access installation, configuration, and command guides for Cisco hardware and software products. With the DVD, you have access to the HTML documentation and some of the PDF files found on the Cisco website at this URL:

http://www.cisco.com/univercd/home/home.htm

The Product Documentation DVD is created monthly and is released in the middle of the month. DVDs are available singly or by subscription. Registered Cisco.com users can order a Product Documentation DVD (product number DOC-DOCDVD= or DOC-DOCDVD=SUB) from Cisco Marketplace at the Product Documentation Store at this URL:

http://www.cisco.com/go/marketplace/docstore

Ordering Documentation

You must be a registered Cisco.com user to access Cisco Marketplace. Registered users may order Cisco documentation at the Product Documentation Store at this URL:

http://www.cisco.com/go/marketplace/docstore

If you do not have a user ID or password, you can register at this URL:

http://tools.cisco.com/RPF/register/register.do

Documentation Feedback

You can provide feedback about Cisco technical documentation on the Cisco Technical Support & Documentation site area by entering your comments in the feedback form available in every online document.

Cisco Product Security Overview

Cisco provides a free online Security Vulnerability Policy portal at this URL:

http://www.cisco.com/en/US/products/products_security_vulnerability_policy.html

From this site, you will find information about how to do the following:

Report security vulnerabilities in Cisco products

Obtain assistance with security incidents that involve Cisco products

Register to receive security information from Cisco

A current list of security advisories, security notices, and security responses for Cisco products is available at this URL:

http://www.cisco.com/go/psirt

To see security advisories, security notices, and security responses as they are updated in real time, you can subscribe to the Product Security Incident Response Team Really Simple Syndication (PSIRT RSS) feed. Information about how to subscribe to the PSIRT RSS feed is found at this URL:

http://www.cisco.com/en/US/products/products_psirt_rss_feed.html

Reporting Security Problems in Cisco Products

Cisco is committed to delivering secure products. We test our products internally before we release them, and we strive to correct all vulnerabilities quickly. If you think that you have identified a vulnerability in a Cisco product, contact PSIRT:

For emergencies only — security-alert@cisco.com

An emergency is either a condition in which a system is under active attack or a condition for which a severe and urgent security vulnerability should be reported. All other conditions are considered nonemergencies.

For nonemergencies — psirt@cisco.com

In an emergency, you can also reach PSIRT by telephone:

1 877 228-7302

1 408 525-6532


Tip We encourage you to use Pretty Good Privacy (PGP) or a compatible product (for example, GnuPG) to encrypt any sensitive information that you send to Cisco. PSIRT can work with information that has been encrypted with PGP versions 2.x through 9.x.

Never use a revoked encryption key or an expired encryption key. The correct public key to use in your correspondence with PSIRT is the one linked in the Contact Summary section of the Security Vulnerability Policy page at this URL:

http://www.cisco.com/en/US/products/products_security_vulnerability_policy.html

The link on this page has the current PGP key ID in use.

If you do not have or use PGP, contact PSIRT to find other means of encrypting the data before sending any sensitive material.


Product Alerts and Field Notices

Modifications to or updates about Cisco products are announced in Cisco Product Alerts and Cisco Field Notices. You can receive Cisco Product Alerts and Cisco Field Notices by using the Product Alert Tool on Cisco.com. This tool enables you to create a profile and choose those products for which you want to receive information.

To access the Product Alert Tool, you must be a registered Cisco.com user. (To register as a Cisco.com user, go to this URL: http://tools.cisco.com/RPF/register/register.do) Registered users can access the tool at this URL: http://tools.cisco.com/Support/PAT/do/ViewMyProfiles.do?local=en

Obtaining Technical Assistance

Cisco Technical Support provides 24-hour-a-day award-winning technical assistance. The Cisco Technical Support & Documentation website on Cisco.com features extensive online support resources. In addition, if you have a valid Cisco service contract, Cisco Technical Assistance Center (TAC) engineers provide telephone support. If you do not have a valid Cisco service contract, contact your reseller.

Cisco Technical Support & Documentation Website

The Cisco Technical Support & Documentation website provides online documents and tools for troubleshooting and resolving technical issues with Cisco products and technologies. The website is available 24 hours a day at this URL:

http://www.cisco.com/techsupport

Access to all tools on the Cisco Technical Support & Documentation website requires a Cisco.com user ID and password. If you have a valid service contract but do not have a user ID or password, you can register at this URL:

http://tools.cisco.com/RPF/register/register.do


Note Use the Cisco Product Identification Tool to locate your product serial number before submitting a request for service online or by phone. You can access this tool from the Cisco Technical Support & Documentation website by clicking the Tools & Resources link, clicking the All Tools (A-Z) tab, and then choosing Cisco Product Identification Tool from the alphabetical list. This tool offers three search options: by product ID or model name; by tree view; or, for certain products, by copying and pasting show command output. Search results show an illustration of your product with the serial number label location highlighted. Locate the serial number label on your product and record the information before placing a service call.



Tip Displaying and Searching on Cisco.com

If you suspect that the browser is not refreshing a web page, force the browser to update the web page by holding down the Ctrl key while pressing F5.

To find technical information, narrow your search to look in technical documentation, not the entire Cisco.com website. On the Cisco.com home page, click the Advanced Search link under the Search box and then click the Technical Support & Documentation.radio button.

To provide feedback about the Cisco.com website or a particular technical document, click Contacts & Feedback at the top of any Cisco.com web page.


Submitting a Service Request

Using the online TAC Service Request Tool is the fastest way to open S3 and S4 service requests. (S3 and S4 service requests are those in which your network is minimally impaired or for which you require product information.) After you describe your situation, the TAC Service Request Tool provides recommended solutions. If your issue is not resolved using the recommended resources, your service request is assigned to a Cisco engineer. The TAC Service Request Tool is located at this URL:

http://www.cisco.com/techsupport/servicerequest

For S1 or S2 service requests, or if you do not have Internet access, contact the Cisco TAC by telephone. (S1 or S2 service requests are those in which your production network is down or severely degraded.) Cisco engineers are assigned immediately to S1 and S2 service requests to help keep your business operations running smoothly.

To open a service request by telephone, use one of the following numbers:

Asia-Pacific: +61 2 8446 7411
Australia: 1 800 805 227
EMEA: +32 2 704 55 55
USA: 1 800 553 2447

For a complete list of Cisco TAC contacts, go to this URL:

http://www.cisco.com/techsupport/contacts

Definitions of Service Request Severity

To ensure that all service requests are reported in a standard format, Cisco has established severity definitions.

Severity 1 (S1)—An existing network is "down" or there is a critical impact to your business operations. You and Cisco will commit all necessary resources around the clock to resolve the situation.

Severity 2 (S2)—Operation of an existing network is severely degraded, or significant aspects of your business operations are negatively affected by inadequate performance of Cisco products. You and Cisco will commit full-time resources during normal business hours to resolve the situation.

Severity 3 (S3)—Operational performance of the network is impaired while most business operations remain functional. You and Cisco will commit resources during normal business hours to restore service to satisfactory levels.

Severity 4 (S4)—You require information or assistance with Cisco product capabilities, installation, or configuration. There is little or no effect on your business operations.

Obtaining Additional Publications and Information

Information about Cisco products, technologies, and network solutions is available from various online and printed sources.

The Cisco Product Quick Reference Guide is a handy, compact reference tool that includes brief product overviews, key features, sample part numbers, and abbreviated technical specifications for many Cisco products that are sold through channel partners. It is updated twice a year and includes the latest Cisco channel product offerings. To order and find out more about the Cisco Product Quick Reference Guide, go to this URL:

http://www.cisco.com/go/guide

Cisco Marketplace provides a variety of Cisco books, reference guides, documentation, and logo merchandise. Visit Cisco Marketplace, the company store, at this URL:

http://www.cisco.com/go/marketplace/

Cisco Press publishes a wide range of general networking, training, and certification titles. Both new and experienced users will benefit from these publications. For current Cisco Press titles and other information, go to Cisco Press at this URL:

http://www.ciscopress.com

Packet magazine is the magazine for Cisco networking professionals. Each quarter, Packet delivers coverage of the latest industry trends, technology breakthroughs, and Cisco products and solutions, as well as network deployment and troubleshooting tips, configuration examples, customer case studies, certification and training information, and links to scores of in-depth online resources. You can subscribe to Packet magazine at this URL:

http://www.cisco.com/packet

Internet Protocol Journal is a quarterly journal published by Cisco Systems for engineering professionals involved in designing, developing, and operating public and private internets and intranets. You can access the Internet Protocol Journal at this URL:

http://www.cisco.com/ipj

Networking products offered by Cisco Systems, as well as customer support services, can be obtained at this URL:

http://www.cisco.com/en/US/products/index.html

Networking Professionals Connection is an interactive website where networking professionals share questions, suggestions, and information about networking products and technologies with Cisco experts and other networking professionals. Join a discussion at this URL:

http://www.cisco.com/discuss/networking

"What's New in Cisco Documentation" is an online publication that provides information about the latest documentation releases for Cisco products. Updated monthly, this online publication is organized by product category to direct you quickly to the documentation for your products. You can view the latest release of "What's New in Cisco Documentation" at this URL:

http://www.cisco.com/univercd/cc/td/doc/abtunicd/136957.htm

World-class networking training is available from Cisco. You can view current offerings at this URL:

http://www.cisco.com/en/US/learning/index.html