Cisco MGX 8850 VISM, Release 1.5 Installation and Configuration
1.5.04 Version Release Notes, Cisco MGX 8850 VISM
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1.5.04 Version Release Notes Cisco MGX 8850 VISM

Table Of Contents

1.5.04 Version Release Notes
Cisco MGX 8850 VISM

About These Release Notes

About the 1.5.04 Release

About the 1.5.03 Release

About the 1.5.02 Release

Features

Features Introduced in Release 1.5.04

Features Introduced in Release 1.5.03

Features Introduced in Release 1.5.02

Features Introduced in Release 1.5.01

Release 1.5.04 VISM Hardware

VISM Hardware not supported on Release 1.5.03

Redundancy

Features not Supported in this Release:

VISM MIB:

Notes and Cautions for Release 1.5.04

Notes and Cautions for Release 1.5.03

Notes & Cautions For Release 1.5.02

Problems Fixed in Release 1.5.03

Problems Fixed in Release 1.5.02

Compatibility Notes

Special Installation and Upgrade Requirements

VISM Firmware Download Procedure

VISM Upgrade from 1.5.02 or 1.5.03 to 1.5.04

VISM Upgrade from 1.5.01 to 1.5.02, 1.5.03, and 1.5.04

Known Anomalies for VISM

VISM 1.5.04 Anomalies

VISM 1.5.03 Anomalies

VISM 1.5.02 Anomalies

VISM 1.5.01 Anomalies

VISM 1.0 Anomalies

Obtaining Service and Support

Cisco Connection On-line


1.5.04 Version Release Notes
Cisco MGX 8850 VISM


About These Release Notes

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About the 1.5.04 Release

The 1.5.04 release is a maintenance upgrade of the VISM 1.5.03 release with a small number of Anomalies being corrected. There is also better support for E1 lines. This release is compatible with the MGX 8850 release 1.1.23.

About the 1.5.03 Release

The 1.5.03 release is a maintenance upgrade of the VISM 1.5.02 release with a small number of Anomalies being corrected. This release is compatible with the MGX 8850 release 1.1.23.

About the 1.5.02 Release

The previous release of VISM, known as Release 1.5.01, was part of the general MGX 8850 Release 1.1.22.

VISM releases have now been unbundled from the MGX8850.

This VISM release, known as Release 1.5.02, is, therefore, an independent VISM software release that stands alone and is not part of a general MGX 8850 release. There are, however, compatibility issues regarding which release of VISM can operate with which release of the MGX 8850 and other Cisco products, see the Compatibility section of these release notes for details.

The update procedure included in these release notes should be noted to work around a clrsmcnf problem on slots with VISM cards.

Features

This section lists the features supported in each of the VISM 1.5.x releases.

Features Introduced in Release 1.5.04

E1 Backcard support in AAL2 Trunking Mode.

Features Introduced in Release 1.5.03

None

Features Introduced in Release 1.5.02

VISM 1.5.02 includes all the features included with Release 1.5.01 and introduces the following new features:

E1 backcard support (VoIP mode only).

The following new CLI commands
dsploops - display line and endpoing loopbacks
pinglndsp - display the health of DSPs for a specified line
dsplnendptstatus - display endpoint status for a specified line.

The addcon command has been modified to allow the user to specify the local VCI to be used for the connection.

Features Introduced in Release 1.5.01

The features provided in VISM 1.5.01 are:

Provides 8 standard T1 interfaces with B8ZS, AMI & HDB3 line coding.

Support for voice over ATM using AAL 2 cells (multiplexing only, no LLC/SNAP encapsulation).

Voice over IP (VoIP) using AAL5 cells to RFC 1889.

Support for both PCM a-law and u-law.

Programmable 24, 32, 48, 64, 80, 96, 112, 128 ms near end echo cancellation.

Voice compression to G.711 and G.726-32K standards.

Nx64 clear channel (N = 1 only) support.

Voice activity detection (VAD) and comfort noise generation (CNG) using variable threshold energy (Cisco proprietary).

Support for call agent Simple Gateway Control Protocol (SGCP) version 1.0, SGCP 1.1+, and Media Gateway Control Protocol (MGCP) 0.1.

Support for CCS signaling transport across an AAL5 trunk.

Support for Fax and modem VoIP bearer transmissions.

Support for dual (redundant) virtual circuits across the packet network

Support for full continuity testing (COT). Supports origination and terminating loopback and transponder COT towards the packet bearer and the TDM sides.

Support for looptiming, payload and line loopbacks.

1:N cold redundancy using SRM-3T3 capabilities (bulk mode support for T1 lines only). Call do not persist during switchover.

Courtesy downing of ongoing voice calls when the VISM is taken out of service for maintenance or other reasons.

Release 1.5.04 VISM Hardware

VISM hardware consists of two versions of a front card, one supporting T1 and one supporting E1.

The following versions of back card are supported by VISM Rel. 1.5.02:

An 8-port T1 version using RJ48 connectors.
An 8-port E1 version using RJ48 connectors.
An 8-port E1 version using SMB connectors.

Each of the above backcards also has a redundant version.

Release 1.5.03 hardware front cards and back cards and their revisions that are supported are as follows:

Front card model #
Rev #
Back card model #
Rev #

Ax-VISM-8T1

B1

AX-RJ48-8T1

A

   

AX-R-RJ48-8T1

A

AX-VISM-8E1

B1

AX-SMB-8/E1

A

   

AX-R-SMB-8E1

A

   

AX-RJ48-8/E1

A

   

AX-R-RJ48-8E1

A



Note The E1 versions of the above front and back cards are supported only when VISM is operating in VoIP mode.


VISM Hardware not supported on Release 1.5.03

None

Redundancy

Support for 1:N and 1:1 Service Module Redundancy, as indicated in the table below:

Front card model #
Redundancy supported

MGX-VISM-8T1

1:N redundancy (bulk mode support for T1 lines only)

MGX-VISM-8E1

1:N redundancy (bulk mode support for T1 lines only)


Support for Bulk Distribution using SRM-3T3B card.

Features not Supported in this Release:

T1/CAS Backhaul

Interworking with SGCP 1.1+ compliant call agent (Bellcore CA SM1.5)

G.729a and G.729ab voice compression

G729ab voice activity detection

Bearer continuity testing

Ring back tone on Ground Start

Separate PVCs for signaling and bearer channels

VBR Provisioning - Although the CLI allows the user to specify VBR (variable bit rate), VISM does not actually provision the card for VBR in this release.

ABR/UBR Provisioning - These connections are not supported in this release and not connections are made when these parameters are specified by the user through the CLI.


Note Code for the above features may be included in the VISM code image. However, no specific mechanism has been included to prevent the use of these unsupported features. If the user attempts to use these unsupported features, there is no guarantee that the features will operate correctly.


VISM MIB:

The VISM MIB is being provided with the delivery of Release 1.5.04 of the VISM software bundles with the MGX 8850 software on CCOand is located at:

http://www.cisco.com/kobayashi/sw-center/wan/wan-planner.shtml

Under MGX8850, select the release (in this case 1.1.23) and click GO.

When the selected FW *.tar file is downloaded, un tar the file & you will find all the latest MIBs bundled with this release.

The MIB is in standard ASN.1 formand may be compiled with most standards-based MIB compilers. For changes in this MIB from release 1.5.01 please refer to the MIB release notes on CCO.

Notes and Cautions for Release 1.5.04

Do NOT upgrade the VISM backup boot firmware as this may render the VISM card inoperable.

None -All other Notes and Cautions for Release 1.5.02 still apply (see below).

Notes and Cautions for Release 1.5.03

Do NOT upgrade the VISM backup boot firmware as this may render the VISM card inoperable.

None - All other Notes and Cautions for Release 1.5.02 still apply (see below).

Notes & Cautions For Release 1.5.02

Do NOT upgrade the VISM backup boot firmware as this may render the VISM card inoperable.

CLI modification and changes:

The following new CLI commands
dsploops - display line and endpoint loopbacks. This command has no parameters.
pinglndsp <line #>- display the health of DSPs for a specified line
dsplnendptstatus <line#>- display the endpoint status for a specified line.

The following CLI commands are not supported in Release 1.5.02
cnfcasxgcp - configure CAS CGCP.

The dspxgcpstat and dspxgcpstats commands have been renamed to dspxgcpcnt and dspxgcpcnts respectively.

Both codec templates, 1 and 2, now include clear channel

The addcon command has been changed to include a new "localVCI" parameter. Also the permissable ranges for the addcon PCR parameter have been changed.

The format of the addcon command is now:

addcon <localVCI><preference><pvcType><application><PCR><mastership>[<remoteConnId>]

Where:

localVCI

The local VCI to be used for the connection in the range 131 - 510. The value entred is also used as the LCN value.

preference

Specifies the use of a primary or secondary channel, 1 for primary, 2 for secondary.

pvcType

Specifies the AAL type of the connection. 1 for AAL5, 2 for AAL2

application

The application of the connection. 1 = control, 2 = bearer, 3 = signaling. If the connection is used for bearer and signaling, specify 2 for bearer

PCR

Peak cell rate in Cells per Second. Ranges are: 1 - 75600 for VoIP bearer,
1 - 24400 for VoIP control, 1 - 50000 for AAL2 T1, 1- 60000 for AAL2 E1,
1 - 400 for AAL2 signaling (trunking).

mastership

Specifies the connection as master or slave. 1 = master, 2 = slave(default).

temoteConnId

Remote connection identifier. This paramater has the format "nodename.slot.port.vpi.vci". (This parameter is used only when mastership is set to 1).


There is now a new way of configuring CAS. The command sequence is:

addln "1" (Assuming line# 1)
cnflnsig "1 1" (Configuring line#1 for CAS signaling type 1)

The addcasvar command can now be executed in any order.

For wink-start application, use filename as wink-did-dod.o

For immediate-start appln, use filename as immed-did-dod.o

For Ground-start appln, use filename as basic-pbx.o

For wink-start, MF appln, use filename as wink-did-dod-mf.o

For example, to add wink-start MF variant.

addcasvar "winkmf wink-did-dod-mf.o"
this can be done at any time, irespective of whether you had configured the other cas variants or not.

If a valid filename is not entered, the command will displays and error saying that filename has to be one of the above.

Problems Fixed in Release 1.5.04

AAL2 Mode Anomalies.

Bug ID
Description

CSCdp49340

VoAAL2

Headline: cnfcon does not change the PCR

Description:When the value of the PCR parameter is changed through the cnfcon command, Vism does not change the value in the MIB

CSCdp72954

VoAAL2

Headline: LOS does not cause Vism to switch clock if vism is clocking the shelf

Description: When the VISM line is used to clock the MGX shelf , if the VISM gets a loss of signal on the T1 line, or, if the line from which clock is derived is deleted , the PXM does not switch to the secondary clock source as expected. Loss of clock is recognized at the PXM only when the VISM port is down ( when a card is reset or if a port is deleted )..

CSCdr16013

VoAAL2

Headline: Vism & 3810 Tx ones(seizures) on last 6 ds0s to pbx.

Description: Vism & 3810 Tx ones(seizures) on last 6 ds0s to pbx. On testbed (pbx loop - ie no 4ESS connection), both 3810 & Vism are transmitting ones on ds0s 19 to 24.


VoIP Mode Anomalies

Bug ID
Description

CSCdr17034

VoIP

Headline: Unable to detect co2 in transponder mode.

Description:The NTFY message is not forwarded to the CA and cot fails.


Problems Fixed in Release 1.5.03

Bug ID
Description

CSCdr16005

VoAAL2

Headline:Manual call upspeeds by itself after static pops

Description:While testing CCS INC to Frame with 20 Hammer calls up, one modem call up and one manual call, the manual call would have a static pop and then upspeed and downspeed. Testing with CNN on one end of the call this was happening about every second. With two people talking, it happened much less offen but still happened.

CSCdr16020

VoAAL2

Headline: Vism sending packets to Cisco 3810 when no voice call is active.

Description:

CSCdr12039

VoAAL2

Headline: Vism bulk stress test call failure

Description:duing test using uising the VCO4k some degradation in tone shaping was detected. the VCO4k flag these calls as failed. No call drops resulted from this condition.


Problems Fixed in Release 1.5.02

Bug ID
Description

CSCdp69061

Headline: vism cards reset during 15 cps test

Description:During a 15 cps test, all vism cards reset unexpectedly stopping all traffic.Cause is being investigated.

Workaround: None

CSCdp68582

Headline: Loss of voice quality on PXM to PXM calls

Description: Some voice dropout and clipping experienced during testing on PXM to PXM calls. Cause is being investigated.

Workaround: None.

CSCdp66621

Headline: Slower data rates when modem calls pass through vism cards

Description: When modem calls were passed through VISM, the achieved data rates were lower than expected.

Workaround: Modem support is limited to V.34 in this release


Compatibility Notes

VISM Software Interoperability with MGX 8850 Platform Software

Table 1 Image Configuration Matrix 

Product
Boot Image
Firmware image

PXM1

pxm_bkup_1.1.23.fw

pxm_1.1.23.fw

PXM1-2-T3E3

pxm_bkup_1.1.23.fw

pxm_1.1.23.fw

PXM1-4-155

pxm_bkup_1.1.23.fw

pxm_1.1.23.fw

PXM1-1-622

pxm_bkup_1.1.23.fw

pxm_1.1.23.fw

AX-CESM-8E1

cesm_8t1e1_CE8_BT_1.0.02.fw

cesm_8t1e1_10.0.11.fw

AX-CESM-8T1

cesm_8t1e1_CE8_BT_1.0.02.fw

cesm_8t1e1_10.0.11.fw

MGX-AUSM-8E1/B

ausm_8t1e1_AU8_BT_1.0.02.fw

ausm_8t1e1_10.0.11.fw

MGX-AUSM-8T1/B

ausm_8t1e1_AU8_BT_1.0.02.fw

ausm_8t1e1_10.0.11.fw

MGX-CESM-T3

cesm_t3e3_CE8_BT_1.0.02.fw

cesm_t3e3_10.0.11.fw

MGX-CESM-E3

cesm_t3e3_CE8_BT_1.0.02.fw

cesm_t3e3_10.0.11.fw

AX-FRSM-8E1

frsm_8t1e1_FR8_BT_1.0.02.fw

frsm_8t1e1_10.0.11.fw

AX-FRSM-8E1-C

frsm_8t1e1_FR8_BT_1.0.02.fw

frsm_8t1e1_10.0.11.fw

AX-FRSM-8T1

frsm_8t1e1_FR8_BT_1.0.02.fw

frsm_8t1e1_10.0.11.fw

AX-FRSM-8T1-C

frsm_8t1e1_FR8_BT_1.0.02.fw

frsm_8t1e1_10.0.11.fw

MGX-FRSM-HS2

frsm_vhs_VHS_BT_1.0.02.fw

frsm_vhs_10.0.11.fw

MGX-FRSM-2CT3

frsm_vhs_VHS_BT_1.0.02.fw

frsm_vhs_10.0.11.fw

MGX-FRSM-2T3E3

frsm_vhs_VHS_BT_1.0.02.fw

frsm_vhs_10.0.11.fw

MGX-FRSM-HS1/B

frsm_hs1_HS1_BT_1.0.02.fw

frsm_hs1_10.0.11.fw

MGX-VISM-8T1

vism_8t1e1_VI8_BT_1.0.02.fw

vism_8t1e1_1.5.0_4.fw

MGX-VISM-8E1

vism_8t1e1_VI8_BT_1.0.02.fw

vism_8t1e1_1.5.0_4.fw

MGX-RPM-64M/B

rpm-boot-mz.120-5.T1

rpm-js-mz.120-7.XT

MGX-RPM-128M/B

rpm-boot-mz.120-5.T1

rpm-js-mz.120-7.XT


1. VISM 1.5.03 Software Interoperability with other Cisco Products

Cisco 3810

MC3810_A2JSV5_MZ.121_1.XA2

Network Management Software:

CWM 9.2.08 .SOL.Patch6.tar

CiscoView:

CV 4.2 WAN CV 2.08

Virtual Switch Controller Software

VSC 7.4(6)


2. VISM 1.5.01 Software Boot and Runtime Firmware Requirements:

Board Pair
Latest Boot Code Version
Minimum Boot Code Version
Firmware
Latest Firmware Version
Minimum Firmware Version

MGX-VISM-8T1

vism_8t1e_VI8_BT_1.0.02.fw

1.0.01

vism_8t1e1_VI8_1.5_01fw

1.5.01

1.5.01

MGX-VISM-8E1

vism_8t1e_VI8_BT_1.0.02.fw

1.0.01

vism_8t1e1_VI8_15_01.fw

1.5.01

1.5.01


3. VISM 1.5.02 Software Boot and Runtime Firmware Requirements:

Board Pair
Latest Boot Code Version
Minimum Boot Code Version
Firmware
Latest Firmware Version
Minimum Firmware Version

MGX-VISM-8T1

vism_8t1e_VI8_BT_1.0.02.fw

1.0.02

vism_8t1e1_1.5.0_2.fw

1.5.02

1.5.02

MGX-VISM-8E1

vism_8t1e_VI8_BT_1.0.02.fw

1.5.02

vism_8t1e1_1.5.0_2.fw

1.5.02

1.5.02


4. VISM 1.5.03 Software Boot and Runtime Firmware Requirements:

Board Pair
Latest Boot Code Version
Minimum Boot Code Version
Firmware
Latest Firmware Version
Minimum Firmware Version

MGX-VISM-8T1

vism_8t1e_VI8_BT_1.0.02.fw

1.0.02

vism_8t1e1_1.5.0_2.fw

1.5.03

1.5.03

MGX-VISM-8E1

vism_8t1e_VI8_BT_1.0.02.fw

1.0.02

vism_8t1e1_1.5.0_2.fw

1.5.03

1.5.03


5. VISM 1.5.04 Software Boot and Runtime Firmware Requirements:

Board Pair
Latest Boot Code Version
Minimum Boot Code Version
Firmware
Latest Firmware Version
Minimum Firmware Version

MGX-VISM-8T1

vism_8t1e_VI8_BT_1.0.02.fw

1.0.02

vism_8t1e1_1.5.0_4.fw

1.5.04

1.5.04

MGX-VISM-8E1

vism_8t1e_VI8_BT_1.0.02.fw

1.0.02

vism_8t1e1_1.5.0_4.fw

1.5.04

1.5.04


Special Installation and Upgrade Requirements

VISM Firmware Download Procedure


Step 1 Download the selected revision of service module firmware into the service module in the selected slot.

tftp <node_name or IP address> 
bin 
put <backup boot> POPEYE@SM_1_<slot#>.BOOT
quit
tftp <node_name or IP address>
put <FW file> POPEYE@SM_1_0.FW
quit 

You cannot do two puts in the same tftp session.


Step 2 Install bt SM slot version.

Step 3 Answer Yes to the question the install command will ask.

VISM Upgrade from 1.5.02 or 1.5.03 to 1.5.04

Standard Service Module Download Procedure

The following step needs to be followed for service module upgrade. Service module firmware images cannot be downloaded as specific versions in MGX 8850 Release 1.1.23 because only one image can be present on the disk at one instance. Hence the user cannot revert back during the installation process.

Download the service module firmware to the shelf:

        unix-prompt> tftp shelf.ip.address
        tftp> bin
        tptp>put vism_8t1e1_1.5.03.fw POPEYE@SM_1_0.FW
        Sent 1982672 bytes in 18.3 seconds

Make sure that the transfer is successful, by looking at the message displayed on the PXM console after the transfer:

        Program length = 1982672
        Calculated checksum = 0xd9779bc6 stored checksum = 0xd9779bc6
        Fw checksum passed

Repeat for each service module type and for each slot independent firmware.


Note There is no abort command for service module upgrade.


VISM Upgrade from 1.5.01 to 1.5.02, 1.5.03, and 1.5.04

VISM 1.5.02 configurations are incompatible with earlier VISM configurations.

VISM does not provide MIB upgrades, so the old configuration must be cleared.

The resetsys command will not clear the configuration.

The clrsmcnf command is not supported on VISM cards that have ports and connections.

So you must follow the procedure below to sucessfully load the new VISM configuration.


Step 1 With old PXM and VISM images still loaded, delete all:

CIDs

CCS (in case of a CCS config)

connections

endpoints

lines

resource partitions

ports

on the VISM cards.

Step 2 Remove VISM cards from the shelf.


Note THIS STEP IS VERY IMPORTANT.


Step 3 Now do clrsmcnf on all VISM cards.

Step 4 Upgrade boot code on PXM using normal procedure

Step 5 TFTP the new PXM firmware image and new VISM firmware image. See "Standard Service Module Download Procedure" below for this step.

Step 6 resetsys --this will cause the shelf to reset.

Step 7 Insert VISM cards back into the shelf. This will rebuild the proper databases with the new images.

Standard Service Module Download Procedure

The following step needs to be followed for service module upgrade. Service module firmware images cannot be downloaded as specific versions in MGX 8850 Release 1.1.22 because only one image can be present on the disk at one instance. Hence the user cannot revert back during the installation process.

Download the service module firmware to the shelf:

        unix-prompt> tftp shelf.ip.address
        tftp> bin
        tptp>put vism_8t1e1_1.5.03.fw POPEYE@SM_1_0.FW
        Sent 1982672 bytes in 18.3 seconds

Make sure that the transfer is successful, by looking at the message displayed on the PXM console after the transfer:

        Program length = 1982672
        Calculated checksum = 0xd9779bc6 stored checksum = 0xd9779bc6
        Fw checksum passed

Repeat for each service module type and for each slot independent firmware.


Note There is no abort command for service module upgrade.


Known Anomalies for VISM

VISM 1.5.04 Anomalies

The following is the list of known anomalies in the VISM service module, Release 1.5.04 delivery. Included with each is a brief discussion of the problem.

AAL2 Mode Anomalies.

Bug ID
Description

CSCdr22479

Headline: PSQM high scores with VAC on.

Description: The PSQM threashold was set to be at 2.5 , however, the resulting scores were in the 6.5 range. Post analysis showed that leading edge and trailing edge were missing.

CSCdr26132

Headline: CAC was enabled even when the connection bandwidth was in excess of the allowed bandwidth.

Description: Added connetions (PVC) with a specific PCR, and added CIDS without CAC enabled. Reenabling CAC should fail to enable the CAC on the card because the current bandwidth was in excess of the allowed bandwidth.. Instead of failing to enable CAC, CAC is enabled.

CSCdr26900

Headline: Upspeeded CID is not down speeded when FAX call made

Description: When the FAX call was made with both the end of the connections were in MASTER mode of CAC, one end of CID upspeeded but the other end did not. After the FAX call was disconnected, the upspeeded end of the CID did not return to the original Codec type. Subsequent calls were not able to be made.

Workaround: Configure connection CAC to Slave before making any calls.


VoIP Mode Anomalies

Bug ID
Description

CSCdr08976VoIP

Headline:E1 Vism allows calls with depleted bandwidth.

Description:After 60 call completions, VISM begins to borrow or deplete bandwidth from stable calls to be used in newly setup calls.This results in tone verification failure and calls getting torn down. Once PVC bandwidth has been depleted with active calls, VISM should reject any new incoming calls. Currently it does not.

CSCdr13493VoIP

Headline: Vism E1: Ecan/Vad not disabled during modem call detection

Description: Make a modem call from the PC to the NAS via the DMS/VSC/VISM. The VISM-E1 does not dynamically disable ECAN during the detection of the modem call. After entering the VISM shellconn/CLI to disable ECAN/VAD and ignore ECAN/VAD, and changing jitter=20ms, the modem call is established with V.90 mode.


VISM 1.5.03 Anomalies

The following is the list of known anomalies in the VISM service module, Release 1.5.03 delivery. Included with each is a brief discussion of the problem.

AAL2 Mode Anomalies.

Bug ID
Description

CSCdp49340

VoAAL2

Headline: cnfcon does not change the PCR

Description:When the value of the PCR parameter is changed through the cnfcon command, Vism does not change the value in the MIB

CSCdp72954

VoAAL2

Headline: LOS does not cause Vism to switch clock if vism clocking the shelf

Description: When the VISM line is used to clock the MGX shelf , if the VISM gets a loss of signal on the T1 line (OR) if the line from which clock is derived is deleted , the PXM does not switch to the secondary clock source as expected. Loss of clock is recognized at the PXM only when the VISM port is down ( when a card is reset or if a port is deleted )..

CSCdr16013

VoAAL2

Headline: Vism & 3810 Tx ones(seizures) on last 6 ds0s to pbx.

Description: Vism & 3810 Tx ones(seizures) on last 6 ds0s to pbx. On testbed (pbx loop - ie no 4ESS connection), both 3810 & Vism are transmitting ones on ds0s 19 to 24.


VoIP Mode Anomalies

Bug ID
Description

CSCdr08976VoIP

Headline:E1 Vism allows calls with depleted bandwidth.

Description:After 60 call completions, VISM begins to borrow or deplete bandwidth from stable calls to be used in newly setup calls.This results in tone verification failure and calls getting torn down. Once PVC bandwidth has been depleted with active calls, VISM should reject any new incoming calls. Currently it does not.

CSCdr13493VoIP

Headline: Vism E1: Ecan/Vad not disabled during modem call detection

Description: Make a modem call from the PC to the NAS via the DMS/VSC/VISM. The VISM-E1 does not dynamically disable ECAN during the detection of the modem call. After entering the VISM shellconn/CLI to disable ECAN/VAD and ignore ECAN/VAD, and changing jitter=20ms, the modem call is established with V.90 mode.

CSCdr17034

VoIP

Headline: Unable to detect co2 in transponder mode.

Description:The NTFY message is not forwarded to the CA and cot fails.


VISM 1.5.02 Anomalies

The following is the list of known anomalies in the VISM service module, Release 1.5.02 delivery. Included with each is a brief discussion of the problem.

AAL2 Mode Anomalies.

Bug ID
Description

CSCdp49340

VoAAL2

Headline: cnfcon does not change the PCR

Description:When the value of the PCR parameter is changed through the cnfcon command, Vism does not change the value in the MIB

CSCdp72954

VoAAL2

Headline: LOS does not cause Vism to switch clock if vism clocking the shelf

Description: When the VISM line is used to clock the MGX shelf , if the VISM gets a loss of signal on the T1 line (OR) if the line from which clock is derived is deleted , the PXM does not switch to the secondary clock source as expected. Loss of clock is recognized at the PXM only when the VISM port is down ( when a card is reset or if a port is deleted )..

CSCdr12039

VoAAL2

Headline: Vism bulk stress test call failure

Description:duing test using uising the VCO4k some degradation in tone shaping was detected. the VCO4k flag these calls as failed. No call drops resulted from this condition.

CSCdr16013

VoAAL2

Headline: Vism & 3810 Tx ones(seizures) on last 6 ds0s to pbx.

Description: Vism & 3810 Tx ones(seizures) on last 6 ds0s to pbx. On testbed (pbx loop - ie no 4ESS connection), both 3810 & Vism are transmitting ones on ds0s 19 to 24.

CSCdr16005

VoAAL2

Headline:Manual call upspeeds by itself after static pops

Description:While testing CCS INC to Frame with 20 Hammer calls up, one modem call up and one manual call, the manual call would have a static pop and then upspeed and downspeed. Testing with CNN on one end of the call this was happening about every second. With two people talking, it happened much less offen but still happened.

CSCdr16020

VoAAL2

Headline: Vism sending packets to Cisco 3810 when no voice call is active.

Description:


VoIP Mode Anomalies

Bug ID
Description

CSCdr08976VoIP

Headline:E1 Vism allows calls with depleted bandwidth.

Description:After 60 call completions, VISM begins to borrow or deplete bandwidth from stable calls to be used in newly setup calls.This results in tone verification failure and calls getting torn down. Once PVC bandwidth has been depleted with active calls, VISM should reject any new incoming calls. Currently it does not.

CSCdr13493VoIP

Headline: Vism E1: Ecan/Vad not disabled during modem call detection

Description: Make a modem call from the PC to the NAS via the DMS/VSC/VISM. The VISM-E1 does not dynamically disable ECAN during the detection of the modem call. After entering the VISM shellconn/CLI to disable ECAN/VAD and ignore ECAN/VAD, and changing jitter=20ms, the modem call is established with V.90 mode.

CSCdr17034

VoIP

Headline: Unable to detect co2 in transponder mode.

Description:The NTFY message is not forwarded to the CA and cot fails.


VISM 1.5.01 Anomalies


The following is the list of known anomalies in the VISM service module, Release 1.5.01 delivery. Included with each is a brief discussion of the problem. A more in depth discussion is available in the release note enclosure of the problem record in Bug Navigator.

Bug ID
Description

CSCdp69061

Headline: vism cards reset during 15 cps test

Description:During a 15 cps test, all vism cards reset unexpectedly stopping all traffic.Cause is being investigated.

Workaround: None

CSCdp68582

Headline: Loss of voice quality on PXM to PXM calls.

Description: Some voice dropout and clipping experienced during testing on PXM to PXM calls. Cause is being investigated.

Workaround: None.

CSCdp66621

Headline: Slower data rates when modem calls pass through vism cards.

Description: When modem calls were passed through VISM, the achieved data rates were lower than expected.

Workaround: Modem support is limited to V.34 in this release.


VISM 1.0 Anomalies

The following is the list of known anomalies in the MGX 8850 VISM service module, Release 1.00 delivery. Included with each is a brief discussion of the problem. A more in depth discussion is available in the release note enclosure of the problem record in Bug Navigator.

Bug ID
Description

CSCdp20174

Symptom:

VISM does not recognize LOS

Description:

If T1 cables are disconnected from the VISM card, or the connected channel bank is powered off, the VISM card does not detect LOS. The card still acts like the line is connected. Reported by ATT Piscataway, MR:000233, Jan Sussman

CSCdp21467

Symptom:

VISM ignores echo setting

Description:

When sending SGCP messages that tell the VISM to turn on echo cancellation, the actual endpoints setup do not have ecan turned on.

WorkAround:

The work around for this issue in VISM 1.0 is to use the shellcon command ccIgnoreLcoEcan. Please note that this change via the use of this command is not persistant. This command needs to be re-executed everytime VISM is reset/re-booted.

CSCdp32764

Symptom:

Undeleted Connections existed on VISM after overnight calls

Description:

We have set up the VISM to originate and terminate on same T1 line, We ran the overnight calls and we observed that each endpoint had connection associated with it. VSC was sending DLCX message but VISM was responding with 510 NACK message and reason code was - CALL/Endpoint Unknown.


Obtaining Service and Support

For service and support for a product purchased from a reseller, contact the reseller. Resellers offer a wide variety of Cisco service and support programs, which are described in the section "Service and Support" in the information packet that shipped with your chassis.


Note If you purchased your product from a reseller, you can access Cisco Connection On-line (CCO) as a guest. CCO is Cisco Systems' primary, real-time support channel. Your reseller offers programs that include direct access to CCO's services.


For service and support for a product purchased directly from Cisco, use CCO.

Cisco Connection On-line

Cisco Connection On-line (CCO) is Cisco Systems' primary, real-time support channel. Maintenance customers and partners can self-register on CCO to obtain additional information and services.

Available 24 hours a day, 7 days a week, CCO provides a wealth of standard and value-added services to Cisco's customers and business partners. CCO services include product information, product documentation, software updates, release notes, technical tips, the Bug Navigator, configuration notes, brochures, descriptions of service offerings, and download access to public and authorized files.

CCO serves a wide variety of users through two interfaces that are updated and enhanced simultaneously: a character-based version and a multimedia version that resides on the World Wide Web (WWW). The character-based CCO supports Zmodem, Kermit, Xmodem, FTP, and Internet e-mail, and it is excellent for quick access to information over lower bandwidths. The WWW version of CCO provides richly formatted documents with photographs, figures, graphics, and video, as well as hyperlinks to related information.

You can access CCO in the following ways:

WWW:  http://www.cisco.com

WWW:  http://www-europe.cisco.com

WWW:  http://www-china.cisco.com

Telnet:  cco.cisco.com

Modem:  From North America, 408 526-8070; from Europe, 33 1 64 46 40 82. Use the following terminal settings: VT100 emulation; databits: 8; parity: none; stop bits: 1; and connection rates up to 28.8 kbps.

For a copy of CCO's Frequently Asked Questions (FAQ), contact cco-help@cisco.com. For additional information, contact cco-team@cisco.com.


Note If you are a network administrator and need personal technical assistance with a Cisco product that is under warranty or covered by a maintenance contract, contact Cisco's Technical Assistance Center (TAC) at 800 553-2447, 408 526-7209, or tac@cisco.com. To obtain general information about Cisco Systems, Cisco products, or upgrades, contact 800 553-6387, 408 526-7208, or cs-rep@cisco.com.