Release Notes for Cisco MGX 8260 Media Gateway, Version 1.2.4

BSCFC-6T3

Front card for Broadband Service Card (BSC); provides TDM switching for 6 channelized DS3 lines

800-06397

-02 D0

-02 C0

01.02.04

01.02.02

MGX8260

System chassis

800-06541

-02 D2

-01 A0

N/A

N/A

NSCFC-8DSP

Front card for Narrowband Service Card (NSC); provides DSP processing for up to 8 channelized T1/E1 lines, including voice, G.711, echo, VAD, and CNG functions

800-06406

-03 C0

-02 A0

01.02.04

01.02.02

NSCFC-16DSP

NSC front card providing DSP processing for up to 16 channelized T1/E1 lines, including voice, G.711, echo, VAD, and CNG functions

800-06405

-03 C0

-02 A0

01.02.04

01.02.02

NSCFC-8TDM

NSC front card providing TDM switching for up to 8 channelized T1/E1 lines

800-06407

-03 C0

-02 A0

01.02.04

01.02.02

NSCFC-16TDM

NSC front card providing TDM switching for up to 16 channelized T1/E1 lines

800-06408

-03 C0

-02 A0

01.02.04

01.02.02

OC3MMBC-4

SCC back card providing 4 OC-3 Multi-Mode Fiber (MMF) interfaces

800-06393

-01 A0

-01 A0

N/A

N/A

OC3SMIBC-4

SCC back card providing 4 OC-3 Single-Mode Fiber Interface (SMFI)

800-06396

-01 A0

-01 A0

N/A

N/A

SCC5FC-4FE¹

5 Gbps front card for System Control Card (SCC). Supports 4 FE ports.

800-06392

-01 F1

-01 F0

01.02.04

01.01.03

SCC5FC-4FE/B

5 Gbps, 256 MB SCC front card. Supports 4 FE ports.

800-15982

-01 D0

-01 A0

01.02.04

01.02.02

SCC5FC-4OC3²

5 Gbps SCC front card. Supports 4 OC-3 ports.

800-06474

-01 A1

-01 A0

01.02.04

01.02.00

SCC5FC-4OC3/B

5 Gbps, 256 MB SCC front card. Supports 4 OC-3 ports.

800-16007

-01 D0

-01 A0

01.02.04

01.02.02

SCCBC-4FE

SCC back card providing NMS ports and four 100BASE-T network interface ports

800-06325

-01 C0

-01 C0

N/A

N/A

T1E1BC-50NR

NSC back card providing 50-pin, 100-ohm, T1/E1 interfaces

800-06322

-01 D0

-01 D0

N/A

N/A

T1E1BC-RED

NSC back card providing 1:N redundancy support

800-06323

-01 C1

-01 B1

N/A

N/A

T1E1BC-RJ48

NSC back card providing 16 E1 120-ohm RJ-48 interfaces

800-06463

-01 B0

-01 A0

N/A

N/A

T3E3BC-6DSX

BSC back card providing 6 Tx and Rx coaxial T3 interfaces

800-06324

-01 D0

-01 D0

N/A

N/A

CSCdr03594

Telnet session suspended on active and Stby SCCs

In rare instances, debugging operations cause Telnet sessions to become suspended.

N/A

CSCdr88819

Multiple tftp connections cause the tftp service to crash

Occurs only for scripts run on Microsoft Windows NT.

Run tftp only from a UNIX workstation. Do not run scripts on Microsoft Windows NT.

CSCdr89536

During connection, DS3 modification should not be allowed

During a connection, it is possible to modify DS3 parameters. This should not be possible, as it can affect calls in progress.

N/A

CSCds67779

Documentation change to have ECAN and VAD default to off

ECAN and VAD default have been changed to OFF but the user documentation does not include this change as of Release 1.2.

N/A

CSCds70201

update user guide for new cli stopdisk

As of Release 1.2.1, a new CLI command, stopdisk, is available to provide a method to shut off hard disk access. This command is not yet included in the Cisco MGX 8260 Command Line Interface Guide.

N/A

CSCds71682

typo in lsevt help message

If incorrect parameters are passed to the lsevt CLI command, the usage message describes the date as dd/mm/yyyy instead of mm/dd/yyyy.

When entering the lsevt CLI command, structure your command in the format mm/dd/yyyy.

CSCds79125

CLI - adddlsp; dlsapTEIAssign does not default to 2

According to the Cisco MGX 8260 Command Line Interface Guide, the default value for the addlsp dlsapTEIAssign parameter is 2. This is incorrect. The current default is 1.

N/A

CSCds79162

CLI - adddlsp; min for dlsap203Timer should be 20

According to the Cisco MGX 8260 Command Line Interface Guide, the minimum value for the addlsp dlsap203Timer parameter is 20. This is incorrect. Currently, this value can be as low as 10.

N/A

CSCdt00032

Cells are being dropped when there are 2300 connections

Cells are being dropped slowly when there are 2300 connections with 4 Ethernet lines active. dspatm2stat shows ErrCrc increasing slowing. Also, if the user continues operations with 2300 connections, the database will somehow become corrupted and will result in MGCP reporting 540 on CRCX and 400 on MDCX with the very first endpoint.

N/A

CSCdt00517

DTMF mid-signal duration not working properly

DTMF mid-signal duration is not working correctly. A DTMF signal may not be detected if the signal duration is borderline.

N/A

CSCdt04637

Datapath distorts original tone from HPT1 tester

When a 404-Hz tone is sent through the bearer path, and switched over to Slot 6, the 404-Hz tone is replaced with a much higher frequency tone.

This problem is caused by bad NSC hardware. Contact the Cisco TAC for assistance.

CSCdt10260

BIP-8 bit does not report cell crash error in CbtPrintStatus function

Upon occurrence of cell bus BIP-8 problems, the cell bus controller (Cubit) driver on the SCC and NSC does not accurately report the problem. Furthermore, upon this specific error condition, the SCC/NSC is not switched over. The occurrence of cell bus BIP-8 problem itself can be intermittent due to defective hardware. This problem is associated with the occurrence of BIP-8 cell bus problems.

N/A

CSCdt13497

MRPC errors in event log and 502 responses to MGCP.

Some MGCP events in the event log are not explained in the user documentation.

N/A

CSCdt21007

BSC Environmental Monitoring Module (EMM) Reports Failed

The environmental monitoring module (EMM) reports created before and after resetting the BSC cards are different.

N/A

CSCdt27477

Incorrect clock source card type displayed after entering the chsclksrc command.

After changing the secondary clocking source, the Clock Source Card Type field displayed by lsclksrc shows the secondary clocking source rather than the current clocking source.

N/A

CSCdt31117

Misleading information on T1 lines in the documentation.

The MGX 8260 documentation for DS1/T1 lines states that the received direction is always set to robbed bit. This should be changed to state that the default signal mode for DS1/T1 lines in the receive direction is None, rather than robbed bit signaling.

N/A

CSCdt40426

NMS-IP addr of format xxx.xxx.xxx.0 broadcast to that subnet

IP addresses of the format xxx.xxx.xxx.0 are broadcast to IP addresses in that subnet. Unless this is intended, such as the manager IP address in the community string, then it is possible that the recipient host is not the intended target of the message. This problem is found in the email server IP configuration and the trap manager IP address configuration. These features are not intended for broadcast.

N/A

CSCdt56759

Tones not measured correctly with gain less than -38dBm in E1

N/A

N/A

CSCdt60334

E1MC: PSQM score is too high

E1 VoIP voice calls may have reduced quality.

Do not use high compression codecs for voice calls.

CSCdt62577

Need CLI to shut off RSIP generation

When the call agent does not generate traffic, the MGX 8260 eventually brings down the MGCP link and starts sending RSIPs.

None

CSCdt72583

DS1 Bert failure on repetitive patterns

During a Bert for DS1 on NSC, with repetitive patterns:
1) With error insertion, COMET sometimes will report error rate mismatch.
2) Without error insertion, COMET sometimes indicates that error bits are detected.
These cases are very likely to happen on patterns 3in24 and 1in16.

N/A

CSCdt75173

System Name is lost after resetnd or upgrade

N/A

N/A

CSCdt77965

clrndcnf may potentially lose trap mgr info if SCC switches over

When the node configuration is cleared, the trap Register RAM information is backed up in a temporary file. When the node rebuilds, this backup file is restored so that traps can be generated when the node is rebuilt. On normal operation, when the node configuration is cleared, when the active card is reset, the same active card is assumed to still be the active one. However, in the SCC mastership arbitration, if the once active card gives up mastership and the standby SCC takes over before the trap manager backup is restored, all trap manager information is gone. The active SCC does not update the standby SCC trap register RAM information, which is the source of information for backing up the trap information.

Update the standby SCC's trap register RAM information. When clrndcnf is invoked, the standby SCC should also invoke the SnmpDbSave function so it can save its RAM information. If the SCC comes up as standby, it should not restore the backup. It should wait for updates from the active card. If there is an ungraceful switchover and the standby SCC becomes active, it will restore the backup trap manager.

CSCdt83222

SCC switch over when adding inactive FastEthernet lines

When adding 4 new Fast Ethernet lines to the primary SCC, the SCC switches over. This should not occur when the Fast Ethernet lines on the secondary SCC are also down. In addition, when the two Fast Ethernet lines on the primary and secondary become active, the SCC also switches over.

N/A

CSCdt84087

TCG reports AAL1 add error

After a few switchovers, a few calls start failing due to Add Channel failure from RMG (possibly due to TCG failure).

N/A

CSCdt84298

Call Agent times out while waiting for COT notify from the MGX 8260

The call agent times out while waiting for a notification of continuity test result from the MGX 8260 when transponder continuity testing is requested on an endpoint before the terminating call is set up.

N/A

CSCdt87073

BSC s/o causes one of the ds3ln to remain in blinking yellow state

While performing graceful shutdown of the BSC, when a call is active, one of the DS3 lines goes to a permanent blinking yellow state.

N/A

CSCdt89367

Cannot add an ethernet line when OSPF and loopback ip are enabled

N/A

N/A

CSCdt89970

Standby NSC cannot be upgraded

When using the upgrade functions (upgd, upgdcmit), NSC modules in standby state but not set up as part of a redundant pair cannot be upgraded. Also, the nsc.fw file is not updated when the last NSC module is upgraded. This causes any new NSC modules that are introduced into the system or previously upgraded NSC modules which are clear configured (clrcdcnf) to boot up on the pre-upgrade software version.

N/A

CSCdt90496

A unique/special tftp key should be added for sensitive files

Currently it is possible to tftp the pswd file out of the MGX 8260. This is a high security risk because any user can do this. A unique/secret tftp key (separate from that for normal files) needs to be added and applied against all sensitive/security related files on the system.

N/A

CSCdt91753

System Date accepting invalid values

The MGX 8260 allows invalid settings for system date and time. For example, February 31 is allowed.

N/A

CSCdt94852

FAX call failed sometimes on data transmission stage

Fax calls sometimes fail during data transmission stage. This problem is different from what has been addressed in resolved issue CSCdt59149 where the failure happens during negotiation stage.

N/A

CSCdt96988

COT transponder tests on each channel of BSC DS1 times out.

COT transponder tests may fail when the sctTimeout value in the COT tests is set to a small number, e.g. 100 ms.

N/A

CSCdu00119

D channels dropped during BSC switchover

N/A

N/A

CSCdu02910

Multiple NTFY sent by the MGX 8260

The NSC reports multiple instances of modem tone upon receipt of each MDCX message. This occurs when modem up-speed is set to G.711. This processing of the MDCX message by TCG will cause multiple instances of modem tone to be detected. As a result, MPC will then report multiple MT NTFY messages to the call agent.

N/A

CSCdu03079

Unrequested NFTY G/vbd sent by 8260

This problem occurs when the
MGX 8260 is configured to send fax/modem NTFY messages.When a modem call is made with FaxModemDetect enabled, 2 NTFY messages are sent from the MGX 8260, one with modem tone detection and a second with voice band detection.

Customers using Release 1.2.2 or prior software should manually turn off the fax/modem reporting via the CLI command 'chmpc'. Customers using Release 1.2.3 will have the fax/modem reporting configuration set to off as default.

CSCdu03115

All endpoints reset due to 1 unack message

Using G.726 32k codec selection, when a modem call with FaxModemDetect enabled, 2 MGCP NTFY messages are sent from the MGX 8260. One message is sent for modem tone detection and a second with voice band data detection. Eventually the repetition of this event results in all configured endpoints on the MGX 8260 to reset.

N/A

CSCdu04802

clrndinf dosent clear inband ip address

Clearing node config should clear inband ip, so the value would be at default again. This does not occur. When the clrndinf command is used, the inband ip address is not reset to the default.

N/A

CSCdu04944

updatefls CLI command should not require path for flashfile

The CLI updatefls command returns an error if the flashfile path is not also included in the command syntax.

N/A

CSCdu12480

VPI header error during T1 multichassis testing

Running a T1 multichassis test, there is sometimes no bearer path on the terminating side, and a VPI header problem. This is caused by hardware problems with certain SCCs.

Contact Cisco TAC.

CSCdu13426

Adding and deleting DS1 lines causes COT test instability

Continually adding and deleting DS1 lines can cause COT tests to become unstable.

N/A

CSCdu16859

Event log entry needed for system clock events.

An event log entry should be made whenever there is a status change to either the primary or secondary clock. Currently clock failures/recoveries are not recorded in the event log.

N/A

CSCdu18974

SCC resetcd boots all cards and fails them

When you reset the SCC card with a redundant SCC card, all cards in the chassis reboot and later fail. You then need to use the resetnd command to return to the normal mode.

N/A

CSCdu20559

BSC reset when SCC s/o due to mastership HW signal delay

When initiating an SCC switchover, the BSC sometimes resets. This is a hardware-related problem.

N/A

CSCdu22897

DTMFmid high pitch tones after switchover

When switchover is performed, sometimes tones are discontinued and a high pitch tone is heard while the call connection is still active. If tones are re-sent, the high pitch tones stop, and the correct tones are received.

N/A

CSCdu23980

NSC Standby responds badly to swcd command

When the redundant NSC module is in active state and the swcd command is issued to return this module to Standby state (and reactivate the primary NSC), the standby card boots to Failed state.

N/A

CSCdu24995

lsreds command inconsistent when rdndnt NSC in slot 16

The MGX 8260 does not display redundancy correctly (via lsreds command) when the redundant card is in the upper slots (11 to 16) and there is BSC redundancy as well as NSC redundancy.

N/A

CSCdu26624

Received functions of lsmacsapstat command do not work.

The received fields of the lsmacsapstat command do not display any received statistics. These fields include Received Frames, Received Bytes, and Received Queued.

N/A

CSCdu26823

Dchan display reports Arbitration scheme as passive when active set

The Macsap profile has a parameter called "Link Arbitration Setup Scheme". This parameter is set to either active or passive. When set to active, it should be reported as active when viewing the details of a Dchan that is using the specific Macsap profile. Instead, the Dchan detail reports the arbitration scheme as passive.

N/A

CSCdu28263

Non-existant NSC appears as failed card.

An NSC card was installed in slot 12. The card came up OK. The card was then moved to slot 1. When the lscd command is executed, the card in slot 12 appears as a failed card even though it is not present. No alarms are reported for the card. It also appears as an installed card on the WebViewer chassis view.

N/A

CSCdu30720

AddChan and/or DelChan take 2 secs.

This problem is for PRI calls only. Some calls are taking up to 2 seconds for call setup request. The normal setup time is 0.2 seconds. This problem only occurs during high PRI call rates, such as 30 calls per second.

None

CSCdu30746

MGX reboot when making BSC-NSC TDM(EC) with rmDemo at very high CPS

When running a high rate of calls, and setting up VoIP calls on a BSC and NSC, the MGX 8260 will sometimes restart while the calls are being set up.

N/A

CSCdu36092

Many performance alarm traps in event log but there is no alarm

During normal traffic load tests, many performance alarm traps fill up the event log, but there is no alarm.

N/A

CSCdu37541

Channel addition fails on TCG

N/A

N/A

CSCdu38083

Congestion is detected at 70 calls/sec VoIP traffic

At 50 VoIP calls per second, MGX 8260 call processing becomes congested.

N/A

CSCdu47056

SCC standby card reported as not present with lscd and lscds cmds

This problem occurs randomly. Sometimes the standby SCC is reported as not being present. This occurs after the active SCC sends an MRPC message to the standby SCC and the standby SCC does not respond. Attempts to restore communications have included reseting the node and attempting to reseat the standby SCC. Sometimes resetting the node returns the communication path.

N/A

CSCdu47381

~2k G.726/G.729 connections cause system to behave abnormally

When performing tests with 2000 connections using G.726 for VoIP, Ethernet alarms sometimes occur, bringing down the Ethernet lines and dropping calls in progress. This problem also occurs with G.729, but not with G.711.

N/A

CSCdu54067

DS1 lines change to SOLID RED after resetnd and bootup

When performing a resetnd, after the MGX 8260 node boots up, some DS1 lines go to SOLID RED alarm.

Do not reset node or BSC card. Do not switch over the BSC. Do not disconnect the DS3 lines.

CSCdu54353

ALBM Channel Addition fails on BSC card after SCC switchover w/red

At 30 cps TDM with BSC redundancy, after SCC switchover, channel additions continuously fail for some of the ports on BSC cards. The event log indicates ALBM Channel Addition failures. Detailed analysis of the event log indicates that ALBM has the port already in connected/used state while TCG has the particular port in idle state.

N/A

CSCdu54837

COT terminating side need to stop once the originating side stops

The terminating side of COT will generate the tone for a fixed period.

N/A

CSCdu55215

NSC redundancy failed

After running integretion test for 12 hours, NSC redundancy failed on E1 mode.

N/A

CSCdu57481

To minimize transient call drops after SCC switchover

After SCC switchover and during standby SCC DB resync, new call attempts will not be accepted for a few seconds.

N/A

CSCdu58060

Standby BSC fails to boot up while high calls in progress

When high call-rates are in progress on the active BSC and the standby BSC is reset for some reason, it fails to boot-up for a long time.

Stop the calls or reduce the call rate on the active BSCs while the standby BSC is booting up. Once the standby BSC is up, the call-rates can be restored to normal high call-rates.

CSCdu58584

Get Clock Source Card Type from Current System Clock

Changed the primary clocking to BITS and secondary clocking to OC3. After sending an lsclksrcs command, the Clock Source Card Type indicates OC3 when it should indicate BITS. After setting the primary clocking to BITS and secondary clocking to internal, the ClockSource Card Type does indicate BITS as intended.

N/A

CSCdu62039

H/W mphy overrun in SCC when adding ~1200 G.726 VoIP

This is a duplicate of CSCdu47381.

N/A

CSCdu66753

E1 switchover sees yellow alarm.

When a redundant NSC module comes active for a failed NSC, there is a latency during which no signal is generated on the E1 line. The far-end device can interpret this latency as a loss of signal and generate back a yellow alarm. When the MGX sees the yellow alarm, all calls on the affected E1 are dropped.

N/A

CSCdu66949

CLI does not allow sonetmedium type to be set to sdh

Previous software versions allow users to add a SONET line with a sonetMediumtype of SDH. Release 1.2.4 does not allow this parameter. It states that it is out of range, even though SDH is a valid option.

N/A

CSCdu67763

add checking for CLI input parameters

No error checking is performed on some CLI input parameters

N/A

CSCdu68300

Node name missing after swcd during upgrade process

This is a duplicate of CSCdt75173. After upgrading the SCC, when switching back from the standby to active side, the active side has the node name missing.

N/A

CSCdu70455

speech tone failed in VoIP mode in long duration calls

This is a duplicate of CSCdu73466.

N/A

CSCdu73430

DTMF digits not detected by 8260

MGX8260 does not relay DTMF keys with the format RFC-2833 specifies.

N/A

CSCdu73466

NSC FPGA drop cell when bursty cell traffic arrive cause buffer full

The NSC's FPGA can drop cells when bursty cell traffic arrives at the NSC and the receive buffers are full. As a result, the AAL1 statistic will be shown as underrun.

N/A

CSCdu73788

Active NSC Reboots with 1 cps of PRI Calls

At a rate of approximately one CPS, with four NSC T1 lines active, the NSC reboots after a few minutes of sustained calls.

N/A

CSCdu84838

After upgdcmit on SCC no further calls can be made

This problem occurs when upgrading from software version 1.2.2 to 1.2.4 or from 1.2.3 to 1.2.4. After issuing the upgdcmit command, the newly active SCC runs 1.2.4, while all other cards are running the previous software version. While the SCCs and the service cards are at different software versions, established calls are preserved, but new calls can not be made until the service cards and SCCs are at the same software version (1.2.4).

N/A

CSCdu08121

Congestion is detected at 70 calls/sec VoIP traffic.

CSCdu19148

AAL1 problem: RxDropCell counter increasing.

CSCdu21565

Calls hang at S6 state when cards went into fail state.

CSCdu35892

Modification to use SAR directly for PRI traffic.

CSCdu35901

Do MRPC call back processing in separate task on SCC.

CSCdu40957

SiwTaskWait() waits too long in some cases.

CSCdu42162

Added function to print min/avg/max chan setup delays.

CSCdu42166

Enhance RMG to interleave bim and ALBM programming.

CSCdu42197

SCC switchover due to BIM SAR failure.

CSCdu42212

Workaround for CSCdu40426.

CSCdu46029

Nsc switchover causes the Nsc to failed state permanently.

CSCdu46061

resetnd after an scc s/w at 40 calls/sec causes Bsc and Nsc to fail.

CSCdu46148

Calls fail on graceful switchover while db syncs up.

CSCdu51753

8260 DSP boundary calculation.

CSCdu53431

Reduce call drops during SCC switchover.

CSCdu53503

BIM SAR fails due to BIM monitor failure.

CSCdu53567

TCG (BSC) may be out of sync when SCC s/o.

CSCdu67935

Unable to log in with WebViewer and RUDP session stopped working.

Cisco MGX 8260 Hardware Installation Guide

DOC-7810966=

Describes the procedures for hardware installation and initial software setup.

Cisco MGX 8260 Command Line Interface Guide

DOC-7810987=

Describes how to configure MGX 8260 Media Gateways from the command line interface.

Cisco WebViewer Guide

DOC-7811012=

Describes how to use the Cisco WebViewer tool.