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Release Notes for Cisco Voice Interworking Service Module Release 3.3.25

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Table Of Contents

Release Notes for Cisco Voice Interworking Service Module Release 3.3.25

Table of Contents

About Release 3.3.25

About Release 3.3.20

About Release 3.3.10

About Release 3.3

Overview

New Features Introduced in Release 3.3.25

SPVC Capacity Expansion

VISM-PR Alarm Events Reported in the MGX Log File

Configurable Loopback Cell Priority

History Statistics Enhancement

VISM Management Information Base

VISM Redundancy

VISM Call Rate

Compatibility

Limitations and Restrictions

Upgrade Procedures

Prerequisites

VISM/VISM-PR Upgrades with PXM1

VISM-PR Upgrades with PXM1E and PXM45

VISM/VISM-PR Downgrade Procedure

VISM to VISM-PR Hardware Upgrade

Caveats in Release 3.3.25

Resolved Caveats in Release 3.3.25

Open Caveats in Release 3.3.25

Caveats in Release 3.3.20

Resolved Caveats in Release 3.3.20

Open Caveats in Release 3.3.20

Caveats in Release 3.3.10

Resolved Caveats in Release 3.3.10

Open Caveats in Release 3.3.10

Caveats in Release 3.3

Resolved Caveats in Release 3.3

Open Caveats

Related Documentation

Obtaining Documentation

Cisco.com

Product Documentation DVD

Ordering Documentation

Documentation Feedback

Cisco Product Security Overview

Reporting Security Problems in Cisco Products

Obtaining Technical Assistance

Cisco Technical Support & Documentation Website

Submitting a Service Request

Definitions of Service Request Severity

Obtaining Additional Publications and Information


Release Notes for Cisco Voice Interworking Service Module Release 3.3.25


These release notes are Part Number OL-8428-01 Rev. A0, November 21, 2005.

The Voice Interworking Service Module (VISM) product is supported by MGX Voice Media Gateways. Refer to these release notes for Media Gateway and version level support guidelines.

The VISM/VISM-PR software release notes are supported by the Cisco Voice Interworking Services (VISM) Configuration Guide and Command Reference Release 3.3, which is available on Cisco.com.

Table of Contents

About Release 3.3.25

VISM/VISM-PR Release 3.3.25 is a maintenance release of Release 3.3.20 and contains new features for VISM-PR. For a description of these features, see the "New Features Introduced in Release 3.3.25" section.

For a list of the resolved caveats in this release, see the "Resolved Caveats in Release 3.3.25" section.

About Release 3.3.20

VISM/VISM-PR Release 3.3.20 is a maintenance release of Release 3.3 and contains the following new features:

1560/980 Hz modem tones

VQT statistics

V.110


Note For a description of these features, refer to the Cisco Voice Interworking Services (VISM) Configuration Guide and Command Reference, Release 3.3.


For a list of the open and resolved caveats in this release, see the "Caveats in Release 3.3.20" section.

About Release 3.3.10

The VISM/VISM-PR Release 3.3.10 is a maintenance release of Release 3.3 and contains no new features. For a list of the open and resolved caveats in this release, see "Caveats in Release 3.3.10" section.

About Release 3.3

VISM/VISM-PR Release 3.3 is a new release. Table 1 summarizes the new features in VISM/VISM-PR Release 3.3.


Note For a description of these features, refer to the Cisco Voice Interworking Services (VISM) Configuration Guide and Command Reference, Release 3.3.


Table 1 VISM/VISM-PR Release 3.3 Features 

Feature
Summary

ATM Fax Relay

VISM-PR can transport fax over an ATM trunk using less bandwidth than fax pass through.

Filtering Traps

To reduce the load on CWM, you can filter the VISM-PR traps while the card is being configured.

VISM-PR Bulk Statistics Upload to CWM

You can upload history statistics data collected on a VISM-PR card to Cisco WAN Manager (CWM).

Display History Statistics

VISM and VISM-PR can collect history statistics.

Display All Static Configuration

On the VISM/VISM-PR card, you can use the dspall command to display static configurations, run-time statistics, and real-time dynamic data.

TDM Companding Law

VISM-PR supports non-standard law companding on the TDM interface.

G.729a Codec with 20 ms

VISM/VISM-PR cards contain a custom profile to support G.729a with 20 milliseconds (ms) packetization period.

Priority Bumping

On the VISM-PR card, you can set up high priority connections even if the available resources on the links are not enough to route the call.

Bearer IP Address Ping

On the VISM/VISM-PR card, you can ping both the controller traffic IP address and the bearer traffic IP address.

Call Throttling

VISM-PR card supports call throttling to maintain the stability of the card when the call rate exceeds the maximum allowable limit.


For a list of the open and resolved caveats this release, see "Caveats in Release 3.3" section.


Note The content of VISM Release 3.3 supersedes previous releases.


Overview

These release notes contain the following sections:

"New Features Introduced in Release 3.3.25" section

"VISM Management Information Base" section

"VISM Redundancy" section

"VISM Call Rate" section

"Compatibility" section

"Limitations and Restrictions" section

"Upgrade Procedures" section

"Caveats in Release 3.3.25" section

"Caveats in Release 3.3.20" section

"Caveats in Release 3.3.10" section

"Caveats in Release 3.3" section

"Related Documentation" section

"Obtaining Documentation" section

"Documentation Feedback" section

"Cisco Product Security Overview" section

"Obtaining Technical Assistance" section

"Obtaining Additional Publications and Information" section

New Features Introduced in Release 3.3.25

This section contains the description of the following new features:

"SPVC Capacity Expansion" section

"VISM-PR Alarm Events Reported in the MGX Log File" section

"Configurable Loopback Cell Priority" section

"History Statistics Enhancement" section

SPVC Capacity Expansion

In this release, you can now configure a maximum of 248 PVCs on a VISM-PR-8E1 card and a maximum of 192 PVCs on a VISM-PR-8T1 card. The cards must be running in the AAL2 trunking mode.

Prior to Release 3.3.25, you could configure a maximum of 64 PVCs on a VISM-PR card.

With the increase in SPVC capacity now supported, you have the option of assigning each DS0 to a separate PVC.

VISM-PR Alarm Events Reported in the MGX Log File

Prior to Release 3.3.25, VISM-PR reported the Receive Line alarms to the PXM log file.

In Release 3.3.25, in addition to the Receive Line alarms, VISM-PR reports the following alarms in the PXM log file:

Transmitted Line alarms

Transmitted and Received PVC alarms

Transmitted and Received Ds0 alarms

The reporting of these alarms is applicable to all of the VISM-PR modes.

The following new commands support this feature:

cnflnalmlog

cnfpvcalmlog

cnfallalmlog

dspalmlog

By default, the alarm log is disabled on all the lines, and the timer is set to 0.

cnflnalmlog

To enable or disable the reporting of VISM-PR line alarms to the PXM log file, use the cnflnalmlog command.

nodename.1.27.VISM8.a > cnflnalmlog <line_number> <logEnab> |LogTimer|

Replace the above arguments with the values listed in Table 2.

Table 2 Parameters for cnflnalmlog Command 

Parameter
Description

line_number

Line number for which you want to enable or disable the DS0 alarm reporting.

logEnab

Value you can use to enable or disable the logging of VISM-PR line alarms to the PXM alarm log.

1 = Enable

2 = Disable

|LogTimer|

(Optional) Number of minutes for which you want the line alarms to be reported to the PXM log file. The maximum time is 7200 minutes (5 days).


In the following example, DS0-based alarm logging is enabled on line 1 for 1440 minutes (1 day):

nodename.1.27.VISM8.a > cnflnalmlog 1 1 1440
nodename.1.27.VISM8.a >

cnfpvcalmlog

To enable or disable the reporting of the alarms for all of the PVCs on a VISM-PR card to the PXM log file, use the cnfpvcalmlog command.

nodename.1.27.VISM8.a > cnfpvcalmlog <logEnab> <LogTimer> 

Replace the above arguments with the values listed in Table 3.

Table 3 Parameters for cnfpvcalmlog Command 

Parameter
Description

logEnab

Value you can use to enable or disable the alarm reporting for all of the PVCs on a VISM-PR card.

1 = Enable

2 = Disable

|LogTimer|

(Optional) Number of minutes for which you want the PVC alarms to be reported to the PXM log file. The maximum time is 7200 minutes (5 days).


In the following example, alarm logging for all PVCs is enabled on line 1440 minutes (1 day):

nodename.1.27.VISM8.a > cnfpvcalmlog 1 1440
nodename.1.27.VISM8.a >

cnfallalmlog

To enable or disable the reporting of alarms on all of the lines and PVCs to the PXM log file, use the cnfallalmlog command. The default reporting time is 7200 minutes (5 days).

nodename.1.27.VISM8.a > cnfallalmlog <logEnab>

Replace the <logEnab> argument with one of the following values to enable or disable the alarm reporting for all of the lines and PVCs on the VISM-PR card:

1 = Enable

2 = Disable

In the following example, alarm logging for all of the lines and PVCs on a VISM-PR card is enabled.

nodename.1.27.VISM8.a > cnfallalmlog 1
nodename.1.27.VISM8.a >

This command is valid when all of the lines on the card are enabled.

dspalmlog

To display the current settings for reporting VISM-PR line and PVC alarms to the PXM log file, use the dspalmlog command.

nodename.1.27.VISM8.a > dspalmlog

In the following example, the line and PVC alarm reporting settings are displayed:

8850.1.1.VISM8.a > dspalmlog

Detailed PVC Alarms to Log: Enabled
-----------------------------------

 Alarm Time Configured(minutes)         Alarm Time Left(minutes)
 ==============================        ================================
   7200                                  7200



Detailed Line Alarms to Log 
-----------------------------

Line Number     Timer Configured(minutes)       Time Left(minutes)
==========      =============================== ========================
1                 1440                          1440
2                 7200                          7198
3                Disabled 
4                Disabled 
5                Disabled 
6                Disabled 
7                Disabled 
8                Disabled 

Configurable Loopback Cell Priority

The ATM OAM loopback cell is used to monitor the end to end connectivity of the PVC in an ATM network.The cell loss priority (CLP) bit in the ATM header is used to set the priority of the cell. A cell with CLP set to 0 has higher priority compared to a cell with CLP set to 1. During traffic congestion events, the lower priority cells are eligible first for discard.

The ATM OAM loopback cells in the VISM-PR card have the cell loss priority (CLP) bit set to 1 by default. These cells can be discarded during traffic congestion even though the class of service is configured to be constant bit rate (CBR). This discard can cause the SPVCs to go into alarm as a result of an OAM loopback timeout, which could result in the dropping of all calls on the SPVCs.

In Release 3.3.25, you can set the CLP bit of an OAM loopback cell to 0 on a VISM-PR card. This setting is propagated across the network to preserve the calls during traffic congestion.

CLP bit configuration is applicable to the OAM loopback cells in all configured PVCs of a VISM-PR card.

To configure the loopback cell priority, complete the following steps:


Step 1 Ensure you are logged in to a VISM-PR card and are operating in the VoIP switching/trunking or AAL2 trunking mode.

Step 2 To set the CLP bit in the OAM cell, enter the cnfoamloopbkclp command.

nodename.1.27.VISM8.a > cnfoamloopbkclp <ClpSetFlag>

Replace the <ClpSetFlag> argument with one of the following values:

1 = Enable (default). The CLP bit of the OAM cell is set to 1.

2 = Disable. The CLP bit of the OAM cell is set to 0.

Step 3 To display the CLP bit settings for the OAM loopback cell, enter the dspvismparam command.

The following example shows the CLP bit of the OAM cell is set to 0.

nodename.1.27.VISM8.a > dspvismparam

  VISM mode:                   voipSwitching/voipTrunking
  VISM features Bit Map:       0x5bc
  FunctionModuleType:          VISM-PR-8T1
  CAC flag:                    enable
  DS0s available:              192
  Template number:             2
  Percent of functional DSPs:  100
  IP address:                  20.25.14.99
  Subnet mask:                 255.255.255.0
  Bearer IP address:           0.0.0.0
  Bearer Subnet mask:          0.0.0.0
  Bearer IP ping:              disable
  RTCP report interval:        5000 msec
  RTCP receive multiplier:     3
  RTP receive timer:           disable
  ControlPrecedence/Tos:       0x60
  BearerPrecedence/Tos:        0xa0
  Aal2 muxing status:          disable
  Tftp Server Dn               TFTPDOMAIN
  Aggregate Clipping           enable

Type <CR> to continue, Q<CR> to stop: 

  Aggregate Svc Bandwidth      0
  Codec negotiation option     1
  Profile negotiation option   1
  VAD Duty Cycle               61
  VAD Tolerance                100
  VISM Initiated NW COT        Off
  VISM CO4 Timer               1000 msec
  CALEA flag                   disable
  Oam Loopback CLP Bit         0
  Continuity Check Cell        1
  SupportdModuleType:          VISM-PR-8T1.
  VismNSAP:                    3838353000000000000000000000000001000100


History Statistics Enhancement

In Release 3.3.25, the VISM-PR card can collect the following new statistics:

OAM Loopback Timeout counts

New OAM Loopback Timeout duration

Active OAM Loopback Timeout Duration

OAM Loopback Timeout Threshold

When all of the statistics are enabled, VISM-PR performance is not affected. All of the statistics are enabled by default except for the statistics upload file, which is enabled through CWM.

The following two commands are modified to include these new statistics:

dsphistorystats

dspconcnt

You can collect history statistics on PVCs 1-64. PVCs above the 64th PVC are not tracked in history statistics and cannot be displayed with the dsphistorystats command.

For more information about collecting history statistics and the commands, refer to the Cisco Voice Interworking Services (VISM) Configuration Guide & Command Reference, Release 3.3 located at the following URL on Cisco.com:

http://www.cisco.com/en/US/products/hw/switches/ps1938/products_configuration_guide_book09186a0080301d30.html

To view the new OAM history statistics, use the dsphistorystats command.

nodename.1.5.VISM8.a > dsphistorystats <StatsType> <Interval> <InterfaceIndex>
|InterfaceIndex2|

Replace the above arguments with the values listed in Table 4.

Table 4 Parameters for dsphistorystats Command 

Parameter
Description

StatsType

Type of history statistics. Value is 1 for PVC.

Interval

Interval. Range is 0-96.

A value of 0 displays the 24-hr total of all of the intervals. Values 1-96 are 15-minute time intervals for the previous 24 hrs.

InterfaceIndex

If StatsType is set to 1 (PVC) or 2 (CID), this value is in the range 131-510 for the logical channel number (LCN).

|InterfaceIndex2|

Not applicable for displaying the new OAM statistics.


In the following example the new OAM statistics are shown in bold.


pxm45-24.1.13.VISM8.a > dsphistorystats 1 80 132
PVC History Statistics: interval = 80, LCN = 132
--------------------------------------------

Valid Flag                              = VALID
Last Reset Uptime Ticks                 = 0
Total ATM Xmt Cells                     = 33157
Total ATM Rcv Cells                     = 31380
Avg Per Sec ATM Xmt Cells               = 36
Avg Per Sec ATM Rcv Cells               = 34
Peak Per Sec ATM Xmt Cells              = 49
Peak Per Sec ATM Rcv Cells              = 40
Total OAM Xmt End-to-End Lpbk Req Cells = 874
Total OAM Rcv End-to-End Lpbk Rsp Cells = 874
Total OAM Xmt Segment Lpbk Cells        = 0
Total OAM Rcv Segment Lpbk Cells        = 0
Total OAM End-to-End Lpbk Lost Cells    = 0
Total Discarded Rcv OAM Cells           = 0
Total OAM Lpbk Timeout Cnts             = 0
Total New OAM Lpbk Timeout Duration     = 0
Total Active OAM Lpbk Timeout Duration  = 0
OAM Lpbk Timeout Threshold              = 5
Total AIS Suppress Cnts                 = 0
Total Xmt AIS Cnts                      = 0
Total Rcv AIS Cnts                      = 0
Total Xmt FERF Cnts                     = 0
Total Rcv FERF Cnts                     = 0
Total Xmt AIS Cells                     = 0
Total Rcv AIS Cells                     = 0
Total Xmt FERF Cells                    = 0
Total Rcv FERF Cells                    = 0
Total AAL2 CPS Sent Pkts                = 196985
Total AAL2 CPS Rcvd Pkts                = 223126
Total AAL2 HEC Errors                   = 0
Total AAL2 CRC Errors                   = 0
Total AAL2 Invalid OSF Cells            = 0
Total AAL2 Invalid Parity Cells         = 0
Total AAL2 Invalid Cid Pkts             = 12997
Total AAL2 Invalid UUI Pkts             = 0
Total AAL2 Invalid Length Pkts          = 0
Total AAL5 PDU Sent Pkts                = 0
Total AAL5 PDU Rcvd Pkts                = 0
Total AAL5 Invalid CPI PDUs             = 0
Total AAL5 Oversized SDU Rcvd PDUs      = 0
Total AAL5 Invalid Length PDUs          = 0
Total AAL5 CRC32 Errored PDUs           = 0
Total AAL5 Reassembly Timer Expiry PDUs = 0

Last Completed Interval Number is 81

To display the real-time count and duration of OAM Loopback Timeouts, use the dspconcnt command.

nodename.1.5.VISM8.a > dspconcnt <LCN>

Replace <LCN> with the number of the logical channel for which OAM loopback timeout information is to be displayed. Range is 131-510.

The following example shows the OAM Loopback Timer count and duration in bold.

pxm45-24.1.13.VISM8.a > dspconcnt 132

ChanNum:                   132
Chan State:                okay
Chan XMT ATM State:        Normal
Chan RCV ATM State:        Normal
Chan Status Bit Map:                0x0
OAM Lpb Lost Cells:                 0
AAL2 HEC Errors:                    0
AAL2 CRC Errors:                    0
AAL2 Invalid OSF Cells:             0
AAL2 Invalid Parity Cells:          0
AAL2 CPS Packet Xmt:                3619340
AAL2 CPS Packet Rcv:                3745789
AAL2 Invalid CID CPS:               220398
AAL2 Invalid UUI CPS:               0
AAL2 Invalid Len. CPS:              0
Chan 24Hr Peak Xmt Cell Rate (CPS): 192
Chan Current   Xmt Cell Rate (CPS): 38
Chan 24Hr Peak Rcv Cell Rate (CPS): 160
Chan Current   Rcv Cell Rate (CPS): 36
AAL5 PDU Packet Xmt:                0
AAL5 PDU Packet Rcv:                0
AAL5 Invalid CPI:                   0
AAL5 oversized SDU PDU:             0
AAL5 Invalid Len. PDU:              0
AAL5 PDU CRC32 Errors:              0
AAL5 Reassembly Timer expired PDU:  0
AIS Successful Suppression Count:   0
AIS Alarm Transmitted Count:        0
AIS Alarm Received Count:           0
FERF Alarm Transmitted Count:       0
FERF Alarm Received Count:          1
OAM Loopback Timeout Count          0
OAM Loopback Timeout Duration(secs):0

VISM Management Information Base

VISM Release 3.3.25 uses Management Information Base (MIB) Version 76. VISM MIBs are compatible with both PXM1-based and PXM1E/PXM45-based chassis.

To access the MIBs, complete the following steps:


Step 1 Load the MIBs available with MGX Release 1.3.11 located at the following URL: http://www.cisco.com/public/sw-center/wan/wan-planner.shtml

Step 2 Copy the modified MIBs that are contained in the MIBS.zip file, which is available at the same location as the firmware files for this release.



Note The MIB version number was last updated in Release 3.3.25.


VISM Redundancy

Table 5 provides the support level for 1:N Service Module Redundancy (N = 1 through 11).

Table 5 Service Module Redundancy 

Front Card Model Number
Redundancy Support

MGX-VISM-8T1

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

MGX-VISM-8E1

1:N redundancy (bulk mode support for E1 lines only).

MGX-VISM-PR-8T1

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

MGX-VISM-PR-8E1

1:N redundancy (bulk mode support for E1 lines only).



Note You can use a VISM-PR card as a redundant card for a VISM card, but a VISM card cannot be used as a redundant card for a VISM-PR card.


VISM/VISM-PR cards support bulk distribution using the SRM-3T3 and SRM-E (OC3) cards. In a redundancy configuration VISM/VISM-PR cards in bulk distribution mode do not require any back cards.

VISM Call Rate

Software Release 3.3.25 for VISM/VISM-PR handles 10 CAS, SS7, or PRI calls per second per VISM/VISM-PR card.

Compatibility

VISM/VISM-PR software interoperability with Cisco MGX 8230, Cisco MGX 8250, Cisco MGX 8830, Cisco MGX 8850 (PXM1, PXM1E, PXM45), and Cisco MGX 8880 platform software is listed in Table 6.

Table 6 VISM/VISM-PR Software Interoperability 

Product
Firmware

PXM1

1.3.12

1.2.23

1.2.13

PXM1E

5.002.000.200

5.000.020.201

4.000.017.202

3.000.025.200

PXM45

5.002.000.200

5.000.020.201

4.000.017.202

3.000.025.200

RPM-PR

12.3(7)T3

12.2(8)T1

RPM-XF

12.3(7)T3

12.2(15)T5

AXSM

5.002.000.200

5.000.020.201

4.000.017.202

3.000.025.200

MPSM

5.002.000.200

VXSM

5.002.000.200


Table 7 shows VISM and VISM-PR compatibility with the PXM controller cards.

Table 7 VISM/VISM-PR Compatibility with PXM Cards

 
PXM1
PXM1E
PXM45 (A/B/C)

VISM

Yes

No

No

VISM-PR

Yes

Yes

Yes


Table 8 shows VISM and VISM-PR compatibility with the Cisco MGX chassis.

Table 8 VISM/VISM-PR Compatibility with Cisco MGX Chassis

 
Cisco MGX 8230
Cisco MGX 8250
Cisco MGX 8830
Cisco MGX 8850 (PXM1)
Cisco MGX 8850
(PXM1E or PXM45)
Cisco MGX 8880 (PXM45)

VISM

Yes

Yes

No

Yes

No

No

VISM-PR

Yes

Yes

Yes

Yes

Yes

Yes


Table 9 describes the VISM/VISM-PR software interoperability with other Cisco products.

Table 9 VISM/VISM-PR Release 3.3.25 Interoperability with Other Cisco Products 

Product
Latest Firmware

CWM

15.1.50 P1 and P2

BTS

4.5

4.4

4.2

3.5.4

PGW

9.5(2)

9.3(2)

CISCO 2421

12.3(10a)

AS5400

12.3.9

AS5300

12.3.9 with vcware 11.32


Table 10 describes the software images available for Release 3.3.25 for VISM/VISM-PR.

Table 10 Software Images for VISM/VISM-PR Release 3.3.25 

Product Name
Software Version
Firmware Image Name
Description

MGX-VISM-SW3325

003.003.025.201.FW

vism_8t1e1_003.003.025.201.fw

This image does not support the CALEA1 feature.

MGX-VISM-LISW3325

003.053.025.201.FW

vism_8t1e1_003.053.025.201.fw

This image supports the CALEA2 feature.

1 CALEA = Commission on Accreditation for Law Enforcement Agencies.

2 The CALEA implementation supports the CALEA law intercept confirmation interface.


Table 11 describes the software boot code requirements for VISM/VISM-PR Release 3.3.25.

Table 11 VISM/VISM-PR Software 3.3.25 Boot Code Requirements 

Board Pair
Boot Code Image Name
Boot Code Version

MGX-VISM-8T1

vism_8t1e1_VI8_BT_3.2.00.fw

VI8_BT_3.2.00

MGX-VISM-8E1

vism_8t1e1_VI8_BT_3.2.00.fw

VI8_BT_3.2.00

MGX-VISM-PR-8T1

vism_8t1e1_VI8_BT_3.2.00.fw

VI8_BT_3.2.00

MGX-VISM-PR-8E1

vism_8t1e1_VI8_BT_3.2.00.fw

VI8_BT_3.2.00



Note Loading this release of the backup boot code is required for existing VISM-PR cards not using this new release.


Limitations and Restrictions

The following limitations and restrictions are valid for software Release 3.3.25 for VISM/VISM-PR:

If you are upgrading the VISM-PR image to Release 3.2.1x or later and the PXM1E or PXM45 image from Release 4.x or earlier to Release 5.x, first upgrade the VISM-PR cards. Then, upgrade the PXM1E or PXM45 cards in the same node.

Do not configure the new VISM features until you have fully upgraded the network. After you upgrade your network to PXM1E or PXM45 Release 5.x or later and VISM-PR to Release 3.2.1x or later, apply the standard upgrade process.

Cisco recommends that you use the cnfcodecjtrdelay command to configure the fixed jitter-delay argument to 20  ms when using VISM-PR 3.3.25.

In a PNNI network, upspeeding SVC fax or modem calls requires an increase in bandwidth between the voice codec and the vbd codec. For fax calls to go through, you must disable policing.

Switched AAL2 PVC mode is not recommended as this mode requires a meshed PVC network topology, which does not scale.

The following commands are not supported:

cnfmaxconfnum

dspconferences

dspmaxconfnum

GR-303 is not supported for the LAPD commands.

In AAL2 SVC mode, all active calls on the VISM cards are dropped upon PXM hard and soft switchover.

For VISM-PR cards that are running on a PXM45 chassis, you can add connections to a maximum of 11 VISM-PR cards.

To add more cards and connections, you must enable the expanded memory option on the PXM45 card by using the cnfndparms (option 4) command.

When configuring VoIP for modem or fax upspeed (passthrough), set the EventNegoPolicy parameter of the cnfvoiptransparams command to the value all.

This configuration is required for all related upspeed codecs to function correctly. An upspeed codec is defined as the codec that is switched to G.711a/u law, Clear Channel, or G.726.

For a list of open issues and mitigations in VISM Release 3.3.25, see "Caveats in Release 3.3.25" section.

Upgrade Procedures

This section describes the following upgrade procedures:

Prerequisites

VISM/VISM-PR Upgrades with PXM1

VISM-PR Upgrades with PXM1E and PXM45

VISM/VISM-PR Downgrade Procedure

VISM to VISM-PR Hardware Upgrade

VISM/VISM-PR Release 3.3.25 provides a procedure for the graceful upgrade (one in which the existing VISM/VISM-PR configuration is preserved throughout the upgrade procedure) from one of the following releases:

From VISM 3.2.11 to VISM 3.3.25

From VISM 3.3 to VISM 3.3.25

From VISM 3.3.20 to VISM 3.3.25

Prerequisites

To ensure that the VISM/VISM-PR configuration is preserved throughout the upgrade procedure, you must complete the prerequisites listed in this section.

Before starting the graceful upgrade procedure, complete the following prerequisites:

Configure your MGX 8000 Series shelf with at least two VISM cards in a redundant configuration.

For more information on adding redundancy, refer to the add redundancy, addred, command in the Cisco MGX 8250, Cisco MGX 8230, and Cisco MGX 8850 PXM1-based Command Reference documentation and the Cisco MGX 8830 and Cisco MGX 8850 PXM1E/ PXM45-based Command Reference documentation.

Ensure that the VISM cards are running at least Release 2.1, and the VISM-PR cards are running at least Release 3.0.

Download software Release 3.3.25 for VISM/VISM-PR to the MGX 8000 Series shelf.

If you are using the CALEA feature, ensure that you have the version of VISM/VISM-PR software that supports CALEA.

VISM/VISM-PR Upgrades with PXM1

This section describes the procedures for upgrading VISM/VISM-PR software when the VISM/VISM-PR is used with a PXM1 card.

Download VISM/VISM-PR Boot Code and Firmware to PXM1

To download the VISM/VISM-PR boot code and firmware to the PXM1 card, use TFTP.


Step 1 Log in to your TFTP server.

Step 2 Download the bootcode and firmware images from the Cisco website.

Step 3 Download the selected revision of service module boot code into the service module.

a. tftp <node_name or IP address>

b. bin

c. put <backup boot> POPEYE@SM_1_0.BT

d. quit

Step 4 Download the selected firmware file.

a. tftp <node_name or IP address>

b. bin

c. To upgrade all VISM cards:

put <FW file> POPEYE@SM_1_0.FW

quit

d. To upgrade an individual VISM card:

put <FW file> POPEYE@SM_1_<slot number of card to upgrade>.FW

quit


Note Do not enter two put commands in the same TFTP session.


Step 5 Proceed to the "Upgrade VISM/VISM-PR Firmware with PXM1 Card" section to install the download.


Upgrade Boot Code with PXM1 Cards

Complete the following steps to upgrade the new backup boot code when you are using PXM1 cards in in a Cisco MGX 8230, Cisco MGX 8250, and Cisco MGX 8850 chassis:


Step 1 Log in to the active PXM1 card (slot 7 or 8 for Cisco MGX 8250 and Cisco MGX 8850 chassis; slot 1 or 2 for Cisco MGX 8230 and Cisco MGX 8830 chassis).


Note VISM/VISM-PR must be in the active state in order to update the VISM/VISM-PR boot code.


Step 2 Execute the PXM1 install command.

nodename.1.27.VISM8.a > install [bt] [sm <slot>] <version>

Caution Do not touch the VISM/VISM-PR card until the status comes back ('Sent xxx bytes in yyy seconds'). Failure to follow this recommendation corrupts the boot code, which cannot be recovered.

When the boot code is being written to PROM, you see comments displayed at the VISM/VISM-PR prompt. This behavior is normal and expected.

Step 3 Type the version command to verify the correct boot code.


Note Step 3 is optional.



Upgrade VISM/VISM-PR Firmware with PXM1 Card

Software Release 3.3.25 is for VISM and VISM-PR cards. Ensure that the VISM and VISM-PR cards have the minimum boot code version of vism_8t1e1_VI8_BT_3.2.00.fw.

The following versions of VISM software Release 3.3.25 are available:

003.003.025.201.FW—without CALEA

003.053.025.201.FW—with CALEA

In this procedure the following conditions apply:

If two VISM or VISM-PR cards are part of a redundancy group, initially the primary card is in the active state, and the secondary card is in the standby state.

Old-rev refers to the firmware, Release 3.2 and prior.

New-rev refers to the firmware after the upgrade, Release 3.3.25.

Perform the firmware upgrade on the VISM or VISM-PR cards. Do not remove the VISM cards and replace them with VISM-PR cards at this time.


Step 1 Log in to the active PXM1 card (slot 7 or 8 for Cisco MGX 8250 and Cisco MGX 8850 chassis; slot 1 or 2 for Cisco MGX 8230 and Cisco MGX 8830 chassis).

Step 2 Save the existing configuration as a contingency plan by entering:

nodename.1.8.PXM.a > savesmcnf <SM slot#>

This command saves the existing configuration in the C:CNF directory. This file can be used during the downgrade procedure.

Step 3 To obtain the correct version of VISM/VISM-PR firmware, enter the dspfwrevs command.

nodename.1.8.PXM.a > dspfwrevs
Card Type   Date       Time     Size     Version             File Name
----------- ------------------- -------- -------------------------------------
VISM-8T1E1  04/26/2004 20:06:04 248688   VI8_BT_3.2.00       sm150.bt
PXM1        01/04/2004 08:19:52 2602836  1.2.11              pxm_1.2.11.fw
PXM1        01/04/2004 11:03:02 2620132  1.2.21              pxm_1.2.21.fw
VISM-8T1E1  09/10/2004 16:22:32 4135208  003.003.000.200     sm150_12.fw
VISM-8T1E1  09/10/2004 15:37:52 4077560  003.002.010.200     sm150.fw
VISM-8T1E1  06/16/2004 13:29:38 3863768  003.051.002.000     sm150_11.fw
PXM1        01/04/2004 11:01:56 1346844  1.2.21              pxm_bkup_1.2.21.fw
VISM-8T1E1  03/08/2004 08:20:16 4037880  003.002.000.000     sm150_3.fw
VISM-8T1E1  03/08/2004 08:19:44 248688   VI8_BT_3.2.00       sm150_3.bt
PXM1        01/04/2004 07:58:44 1345328  1.2.11              pxm_bkup_1.2.11.fw
VISM-8T1E1  01/07/2004 23:33:02 3863768  003.051.002.000     sm150_2.fw
VISM-8T1E1  03/08/2004 08:21:12 248688   VI8_BT_3.2.00       sm150_4.bt
VISM-8T1E1  05/10/2005 19:59:52 4037880  003.003.020.000     sm150.fw

Step 4 Execute the PXM install command.

nodename.1.8.PXM.a > install sm <SM slot#> <new-rev>

Replace <SM slot#> with the slot number of the primary VISM or VISM-PR card.

Replace <new-rev > with the version of the new firmware (for example, 003.003.025.201.FW).

The install sm command causes the secondary VISM or VISM-PR card to reset and come up in the standby state, running the new-rev firmware. The primary VISM or VISM-PR card is unaffected by this command.


Caution Ensure that you perform Step 4. If you do not perform Step 4, the boot code is corrupted and not recoverable.

Step 5 Execute the PXM newrev command.

nodename.1.8.PXM.a > newrev sm <SM slot#> <new-rev>

Replace <SM slot#> with the slot number of the primary VISM or VISM-PR card.

Replace <new-rev> with the version of the new firmware.

The newrev command causes the primary VISM or VISM-PR card to reset. The secondary VISM or VISM-PR card becomes active and runs the new-rev firmware.

Step 6 Execute the PXM commit command.

nodename.1.8.PXM.a > commit sm <SM slot#> <new-rev>

Replace <SM slot#> with the slot number of the primary VISM or VISM-PR card.

Replace <new-rev> with the version of the new firmware.

The two VISM or VISM-PR cards are now back to their original condition, except that both cards are now running the new-rev firmware.

Step 7 Log in to the active VISM or VISM-PR card and use the display commands (for example, dspendpts, dspcasvar, and so forth) to confirm that the configuration has been preserved through the upgrade process.


Note For more than one primary VISM or VISM-PR card in a redundancy group, ensure that the secondary card is in the standby state, and repeat Step 5 and Step 6 for each VISM/VISM-PR card in the redundancy group.


Step 8 Perform the following verifications:

Make minor modifications to the configuration.

Check that the changes have been executed correctly.

Change the configuration back again.



Note If the VISM or VISM-PR card is not part of a redundancy group, complete only
Step 1 to Step 4.


VISM-PR Upgrades with PXM1E and PXM45

This section describes the procedures for upgrading VISM-PR software when the VISM-PR is used with a PXM1E or PXM45 card.

If you are upgrading the VISM-PR image to Release 3.2.1x or later and the PXM1E or PXM45 image from Release 4.x or earlier to Release 5.x, first upgrade the VISM-PR cards. Then, upgrade the PXM1E or PXM45 cards in the same node.

Do not configure the new VISM features until you have fully upgraded the network. After you upgrade your network to PXM1E or PXM45 Release 5.x or later and VISM-PR to Release 3.2.1x or later, apply the standard upgrade process.

Download VISM-PR Boot Code and Firmware to PXM1E and PXM45

To download the VISM-PR boot code and firmware to the PXM1E or PXM45 card, use FTP.


Step 1 Access the boot code and firmware images on Cisco.com.

Step 2 To download the images, enter the ftp command.

ftp node-ip

The node-ip argument is the IP address of the node to which you want to download the image.

Step 3 Enter your user name and password.

Step 4 Enter bin.

Step 5 Change to the C:FW directory.

cd C:FW

Step 6 Download the images to your C:FW directory.

a. To download one file at a time, use the put image-version command.

b. To download multiple files at the same time, use the mput <image-version> <image-version> command.

The image-version argument is the image that you accessed in Step 1.

Step 7 To exit the download procedure, enter bye.


Upgrade Boot Code with PXM1E and PXM45 Cards

Complete the following steps to upgrade the new backup boot code when you are using PXM1E or PXM45 cards in your MGX 8000 Series chassis:


Step 1 Complete the steps in the "Download VISM-PR Boot Code and Firmware to PXM1E and PXM45" section.

Step 2 Log in to the active PXM1E or PXM45 card.

Step 3 To upgrade the VISM-PR boot, enter the burnboot command.

nodename.1.7.PXM.a > burnboot <slot> <revision>

Replace <slot> with the number of the VISM-PR card that you want to upgrade.

Replace <revision> with the version of the bootcode you downloaded from Step 1.

The following example shows sample results from the burnboot command.

nodename.1.7.PXM.a > burnboot 12 3.2(0.0)

The card in slot 12 will be reset.
burnboot:Do you want to proceed (Yes/No)? yes

For VISM-PR cards without redundancy, the card automatically resets and becomes active with the latest boot code image.

For VISM-PR cards with redundancy, the active card takes approximately 60 seconds to reset as standby. For the original standby card, complete Step 2- Step 3. This card now resets and becomes the standby again, and the standby card is now active.


Upgrade VISM-PR Firmware with PXM1E and PXM45 Cards

Complete the steps in this section to upgrade the VISM-PR firmware. Ensure that the VISM-PR cards have the minimum boot code version of vism_8t1e1_VI8_BT_3.2.00.fw.

The following versions of VISM-PR software Release 3.3.25 are available:

003.003.025.201.FW—Without CALEA

003.053.025.201.FW—With CALEA


Caution If you plan to upgrade PXM cards and VISM-PR modules, upgrade the PXM cards first. Wait until the PXM cards are operating in active and standby modes with the correct software before upgrading the VISM-PR modules. Failing to upgrade the node in the correct order can fail VISM connections, causing significant service disruption.

Perform the firmware upgrade on the VISM-PR cards.


Step 1 Log in to the active PXM1E or PXM45 card.

Step 2 Ensure that the card is in the redundant mode, where the active card is the primary card.

Step 3 To save the existing configuration, enter the saveallcnf command.

nodename.1.7.PXM.a > saveallcnf

Step 4 To load the new software, enter the loadrev command.

nodename.1.7.PXM.a > loadrev <sm-primary-slot-num> <new-rev> 

Replace <sm-primary-slot-num> with the slot number of the VISM-PR card on which you want to install the new software.

Replace <new-rev> with the new firmware version number for the VISM-PR software.


Caution Temporary traffic loss occurs.

Step 5 Ensure that the redundant card is returned to the standby state by executing the dspcds command.


Note You must wait for the redundant card to return to the standby state. If you issue the runrev command too early, an error message is generated. The rev change does not occur.


Step 6 To execute the download, enter the runrev command.

nodename.1.7.PXM.a > runrev <sm-primary-slot-num> <new-rev>

Replace <sm-primary-slot-num> with the slot number of the VISM-PR card on which you want to install the new software.

Replace <new-rev> with the new firmware version number for the VISM-PR software.


Caution Temporary traffic loss occurs.

Step 7 Ensure that the primary card completes booting up and goes into the standby state by executing the dspcds command.


Note You must wait for the primary card to finish booting up and get to standby state. Issuing the commitrev command early might be accepted without an error. However, the active and standby cards might not be swapped back to their original states. For example, the original primary card might be left in standby, and the original redundant card might be left as active.


Step 8 To commit the new download to the VISM-PR card, enter the commitrev command.

nodename.1.7.PXM.a > commitrev <sm-primary-slot-num> <new-rev>

Replace <sm-primary-slot-num> with the slot number of the VISM-PR card on which you want to install the new software.

Replace <new-rev> with the new firmware version number for the VISM-PR software.

The commitrev command switches the primary card from a standby state to an active state and the redundant card from an active state back to a standby state.

Step 9 To verify the card states, execute the dspcds command.


VISM/VISM-PR Downgrade Procedure

Use this procedure to downgrade VISM/VISM-PR software from software Release 3.3.25 to an earlier VISM/VISM-PR release. If you use the downgrade procedure described here, you can retain the configurations after the downgrade.


Note The configurations that existed with old-rev firmware should have been saved earlier. You cannot downgrade from VISM-PR to VISM.


Complete the following steps to downgrade the VISM/VISM-PR software:


Step 1 If the VISM/VISM-PR card is in a redundancy group, remove the redundancy.

nodename.1.7.PXM.a > delred <SM slot#>

Step 2 Download the old-rev firmware onto the MGX shelf.

Step 3 Execute the PXM clrsmcnf command.

nodename.1.7.PXM.a > clrsmcnf <SM slot#>

Replace <SM slot#> with the slot number of the VISM/VISM-PR card to be downgraded.

Wait for the card to become active. The VISM/VISM-PR card resets after you execute this command.

Step 4 Execute the PXM restoresmcnf command.

nodename.1.7.PXM.a > restoresmcnf -f <filename> -s <SM slot#>

Replace <filename> with the name of the old configuration file that was saved while the old-rev firmware was running. The file can be found in the C:CNF directory on the MGX shelf.

Replace <SM slot#> with the slot number of the VISM/VISM-PR card to be downgraded.

The VISM/VISM-PR card resets again. The card becomes active, running the old-rev firmware with the old configuration.


Note For PXM1E/PXM45 cards, you cannot restore the configuration for an individual VISM-PR service module. You can save and restore the configuration of all cards in a chassis using the saveallcnf and restoreallcnf commands.



Caution The restoreallcnf command reconfigures all of the cards in the chassis.

Step 5 Reconfigure the redundancy group, if required.


VISM to VISM-PR Hardware Upgrade

Complete the following steps to upgrade your system from VISM cards to VISM-PR cards.


Caution For this procedure, you must install the redundant (standby) VISM-PR card first. Failure to follow this recommendation results in traffic loss. In addition, do not remove an active VISM card from your chassis. Ensure that you change an active VISM card to the standby state before you remove it and replace it with a VISM-PR card.


Step 1 Remove the redundant (standby) VISM card from its slot in your chassis.

Step 2 Install a VISM-PR card in the same slot.

Step 3 Administratively configure the VISM-PR card you installed in Step 2 as primary (active).

Step 4 Remove the now redundant VISM card from your chassis.

Step 5 Install a VISM-PR card in the slot from which you removed the VISM card in Step 4.

Step 6 Log in to the redundant (secondary) VISM-PR card and execute the dspcd command. Verify that the output from the dspcd command lists the card type under FunctionModuleType as a VISM-PR card. If the card type still indicates the VISM card, execute the resetcd slot-num command from the PXM and repeat the dspcd command to ensure that the correct card type is shown.

Step 7 Log in to the active VISM-PR card and execute the dspcd command. Verify that the output from the dspcd command lists the card type under FunctionModuleType as a VISM-PR card.

If the card type still indicates the VISM card, execute the resetcd slot-num command from the PXM. Repeat the dspcd command to ensure that the correct card type is shown.

Step 8 If you have no other VISM cards in your chassis, you have completed the hardware upgrade procedure; do not proceed to Step 9. If you have more VISM cards in your chassis, proceed to Step 9.

Step 9 Remove a standby VISM card from its slot in your chassis.

Step 10 Install a VISM-PR card in the same slot.

Step 11 Repeat Step 9 and Step 10 to remove any remaining VISM cards in your chassis and replace them with VISM-PR cards.

Step 12 Repeat Step 6 and Step 7 on the remaining VISM-PR cards to ensure that the correct card type is shown for each.


Caveats in Release 3.3.25

This section describes the resolved and open caveats in VISM/VISM-PR Release 3.3.20.

Resolved Caveats in Release 3.3.25

Table 12 describes the caveats that have been resolved in Release 3.3.25 as of November 4, 2005.

Table 12 Resolved Caveats in Release 3.3.25 

DDTS Issue
Description

CSCee41976

VISM cards are failing due to incorrect card id field on MB/DC

CSCee92429

Performance degradation since 3.1.3 results in additional AAL2 errors

CSCeh49678

dspxgcpendpt shows wrong information

CSCeh64800

Fax passthrough fails when excessive jitter is experienced

CSCeh72843

False statistics displayed by dspconcnt after deleting and adding AAL2 CIDs

CSCei20746

Profile 1, 7 (ITU 7) AAL2 indicates generic SID which is incorrect

CSCei54326

VISM stops sending RTCP packets after cnfgwoos forceful

CSCei54618

Discrepancy in the VISM statistical information

CSCei69138

NLP gets stuck in VoIP switching mode

CSCei85965

Insufficient bandwidth causes CIDs to be put OOS after card reset

CSCei87559

Configurable continuity check cell

CSCei93468

Voice path exists when CID is out of service

CSCej16082

Bad voice quality after upgrade from 3.1 to 3.3

CSCej24398

VISM line DB corruption

CSCej24487

Cannot clear dspconcac counter when card is reset

CSCej54263

VISM statistics upload key field for PVC statistics is incorrect

CSCin90085

In RSVP, GUI shows new element created although the LCN does not exist

CSCin95193

Modifying the session type for the RUDP session should throw error


Open Caveats in Release 3.3.25

Table 13 describes the open caveats in VISM/VISM-PR Release 3.3.25 as of November 17, 2005.

Table 13 Open Caveats in VISM/VISM-PR Release 3.3.25 

DDTS Issue
Description

CSCei29995

Symptom: VISM-PR reports latency of zero when it interoperates with platforms: 2421, 3745, and 5400.

Conditions: This issue is seen intermittently in VISM-PR interop testing with 2421, 3745, and 5400.

Workaround: None.

CSCei51973

Symptom: Fax retrains to a lower data rate in case of VISM <-> IOS interop.

Conditions: With a T38 Fax Relay call between VISM-T1/VISM-PR-T1 (Template 3; G711u) and 5300, 2421, and 3745 IOS platforms, the fax transmission retrains from 14400 bps to 12000 bps. The fax transmission is successful but only at the lower data rate.

This conditions occurs when the IOS (5300, 2421, and 3745) platforms originate fax calls. The fax calls run successfully when VISM/VISM-PR originates the call.

With VISM interoperating with 5400 and 3810 platforms, this problem is not observed.

Workaround: None.

CSCej06477

Symptom: When 248 PVCs are configured and CIDs with G711a and VAD off are added per PVC, some PVCs go into failed state.

Conditions: The problem occurs if all 248 PVCs are added and each PVC has one CID on it.

Workaround: None.

CSCej12076

Symptom: VISM stops transporting DTMF after BW change.

Conditions: CIDS are in alarm state and are not able to transmit DTMF digits.

Workaround: None.

CSCej45540

Symptom: The UDP port used by the static RTP stream is used later by a dynamic RTP stream, which causes the datamover to send all the data from the C7 signaling stream to the wrong DSP channel.

Conditions: This issue occurs because after 1 to 2 hours, more than 248 dynamic RTP connections are set up. The 249 dynamic RTP connections use UDP port 49684, which is used by slot 2, C7 signaling channel. If the call rate is less, the time it takes to the dynamic RTP connection is more.

Workaround: Delete the RTP connections for the C7 signal, and add them back with a local UDP port greater than 49748.

CSCej61968

Symptom: Even after successfully recovering from DSP failure, VISM sends a 900 "DSP Failure" message in response to AUEP message CA.

Conditions: This issue occurs with a DSP failure.

Workaround: None.


Caveats in Release 3.3.20

This section describes the resolved and open caveats in VISM/VISM-PR Release 3.3.20.

Resolved Caveats in Release 3.3.20

Table 14 describes the caveats that have been resolved in Release 3.3.20 as of August 9, 2005.

Table 14 Resolved Caveats in Release 3.3.20 

DDTS Issue
Description

CSCec68687

Simultaneous ISDN call drops not clearing all the endpoints on VISM

CSCef12950

VISM processes calls with Clr Chan Codec and ECAN On

CSCef32606

DSP fails to re-download when DSP failed

CSCef55005

High failure rate for fax passthrough calls on VISM

CSCef55425

Path confirmation failures-G729a codec, adaptive Jtr Delay

CSCef72611

Path confirmation failures with CCD calls and VISM 3.1(3.x)

CSCef80145

No speech with 0 fixed JB, timestamp on and 20 ms codec packet period

CSCeg25307

Increasing the jitter buffer has no effect in one-way delay

CSCeg61617

VISM crashes hours after running PRI backhaul load

CSCeg82063

RTP ports check on RTP stream

CSCeg86053

PVC bandwidth not freed up correctly after FAX relay call

CSCeg86125

VISM-PR DTMF not working for tones of 50 ms or less with Arris E-MTA

CSCeg90314

Wrong values for E1 dsplndsx0s default idle and seize CAS code

CSCeh02598

VISM displays novram via PXM1E incorrectly

CSCeh06598

VISM should return 540 errors instead of 501

CSCeh07389

T38 failed if dtmf-relay low-bit-rate configured on IAD side

CSCeh18123

After failing DSPs, dsplncidcps shows negative values

CSCeh35201

VISM crashes with E1 CCS load-ATMizier not responding

CSCeh36322

Six extra packets cause metallic voice

CSCeh39265

VISM-PR crashes when CP tone SIT is played out

CSCeh46707

Interop with SIP fails as VISM does not accept different codec strings

CSCeh47379

CCS AAL2 Trunking load of 200 V.110 calls cause reset

CSCeh51733

VISM dspcidcps does not show correct display

CSCeh54188

VISM is reset when interop with VXSM

CSCeh58782

32740 byte ping to vism host IP causes card to reset

CSCeh72843

False statistics displayed by dspconcnt after deleting/adding AAL2 CIDs

CSCeh77215

Softswitch on VISM causes burst of audible noise

CSCeh78724

Calls fail when adding cas variant endpoints in AAL2 trunking mode

CSCeh89668

Remote loopback on VISM does not appear to be working

CSCeh91020

E911 call drops when BTS sends piggybacked mgcp messages

CSCei26177

Call failures in benchmark load tests due to call throttling

CSCei26288

Restore the UUI codepoint range of custom profile 210

CSCin82554

VISM-PR sec.card allows SNMP set for trap filtering but not from CLI

CSCin87735

Wrong codec status displayed when fax mode changed to relay/passthru

CSCin89464

D_vismChanState_oid 1.3.6.1.4.1.351.110.5.5.3.2.1.1.2 missing in CF


Open Caveats in Release 3.3.20

Table 15 describes the open caveats in VISM/VISM-PR Release 3.3.20 as of July 19, 2005.

Table 15 Open Caveats in VISM/VISM-PR Release 3.3.20 

DDTS Issue
Description

CSCeh72843

Symptom: CLI dspconcnt shows false AAL5 statistics when AAL2 CIDs have been deleted and re-added.

Conditions: This symptom occurs with the following conditions:

AAL2 trunking

CIDs added, deleted and re-added

Releases 3.3.10 and earlier

Workaround: Do not delete and re-add CIDs.

Issue the clrsmcnf command and reconfigure the card if CIDs are changed and statistics are needed.

CSCei25172

Symptom: VISM lines are stuck in AIS.

Conditions: VISM-PR-8T1 is configured for AAL2 trunking and has CID. When the DS3 links go down and come back up, the VISM line remains stuck in AIS alarm.

Workaround: Disconnect and then reconnect the VISM cable.

CSCei30249

Symptom: VISM resets itself upon receiving RTP packets with different SSRCs on each RTP packet.

Conditions: The symptom happens only when VISM receives RTP packets with different SSRCs on each RTP packet.

This condition occurred with 12.3.4T6 on one of its IAD 2431 to create the problem.

Workaround: Fix the issue on the other side of the RTP session so that the correct SSRCs are used.

CSCei54326

Symptom: VISM stops sending RTCP packets after cnfgwoos forceful.

Conditions: RTCP packets are not sent from VISM for any of the calls when the VISM meets the following conditions:

1. One hundred or more active calls exist.

2. The gateway is forcefully taken out of service: cnfgwoos 2

3. The gateway is put back in service: cnfgwis

Workaround: Take the gateway gracefully out of service: cnfgwoos 3

CSCei54618

Symptom: Discrepancy in the VISM statistical information.

Conditions: The issue was observed with the CTM /MGM 5.0 Element Management on the MGX 8850 with VISM-PR-8T1/E1 Release 3.3.10.

Workaround: Use SNMP to get the current real-time and last 15 minute statistics for unavailable seconds (UAS) statistics.

Further Problem Description: The incorrect report value is of the UAS that is calculated by the VISM-PR.

CSCei61996

Symptom: VQT Stats: Latency is different between each direction of a call. During the early stage of a call, the A-->B and B-->A directions of a call report different values of latency.

Conditions: This symptom occurs with the following conditions:

VAD ON

Fixed jitter buffer

Timestamp disabled

VoIP switching mode

Workaround: Use one of the following workarounds:

1. Fixed jitter buffer mode with timestamp enabled

2. Adaptive jitter buffer mode

3. VAD disabled

CSCei85965

Symptom: CIDs are put in OOS as a result of insufficient bandwidth.

Conditions: Subsequent CIDs will be put in OOS after a card reset.

Workaround: Increase the bandwidth on the PVC.


Caveats in Release 3.3.10

This section describes the resolved and open caveats in VISM/VISM-PR Release 3.3.10.

Resolved Caveats in Release 3.3.10

Table 16 describes the caveats that have been resolved in VISM/VISM-PR Release 3.3.10.

Table 16 Resolved Caveats in VISM/VISM-PR Release 3.3.10 

DDTS Issue
Description

CSCed60487

CLI dspcids does not reflect correct state of the CID

CSCee03716

DTMF Relay: missing digits in VoIP switching mode

CSCee37537

VISM-PR responses to AUEP 502 failed to allocate tuple sometimes

CSCef03116

Fax passthrough fails with AAL2 Trunking, E1 PRI

CSCef03134

Low uplink rate on modem passthrough with AAL2 Trunking, E1-PRI

CSCef10041

VISM sending AIS twice upon detection from line side

CSCef26476

VISM CLI dsplnendptstatus does not reflect correct ECAN value

CSCef39465

HEC errors, invalid OSF cells on all VISM connections

CSCef54851

Connection parameter mismatch with cnfcon CLI command

CSCef61454

Display connection database discrepancy

CSCef69692

SNMP mibwalk stuck in loop when configuration has multiple PVCs

CSCef70885

Some client modems failed to upspeed to the configured VBD codec

CSCef80412

Timestamp discrepancy between PXM1 and VISM-PR

CSCef81423

BTS VoIP Switch T1 CAS 15 cps load causes card resets

CSCef82038

One way traffic on VISM-PR-8E1 for VoIP

CSCef97639

G.729 20 ms codec not supported in template 5 AAL2 Trunking

CSCeg01767

VISM prints debug messages after executing any gain/att CLI

CSCeg02863

Need to remove lossless codec from rtpcons—not supported

CSCeg06965

VISM should handle ICMP traffic gracefully

CSCeg09338

CLI output of dspcons command on VISM needs correcting

CSCeg12913

VISM rejects the a=sendrecv SDP when using image/t38 codec

CSCeg18984

VISM SCPU is crashed/frozen VoIP implementation

CSCeg24368

cnfjtrinitdelay can silently fail to set codec jitter delay

CSCeg27900

After FAX call, VISM sends voice packets when remote TDM alarm

CSCeg29149

printf should only be called when debug flag is set on VISM

CSCeg33271

Modem call failed to upspeed/downspeed

CSCeg33898

VISM card stuck in boot state after issuing ccTraceDump

CSCeg36000

VISM response 200 OK to CRCX but never really create a connection

CSCeg45224

PVC switchover broken in 3.2.11

CSCeg47932

64 character VISM domain name causes VISM card to hang

CSCeg49706

SGCP incorrect order crashes VISM

CSCeg55292

Setting timestamp ON w adaptive jtrmode resets jtrmode to fixed

CSCin79200

Fax Tx is successful using pt when Org-fxlco=pt and Trm-fxlco=gw

CSCin79878

VAD is not turned back to ON after a fax transmission in VISM

CSCin84813

VISM-PR card resets on bulk trap addition

CSCin87238

AAL2 fax passthrough fails for multiple fax calls


Open Caveats in Release 3.3.10

Table 17 describes the open caveats in VISM/VISM-PR Release 3.3.10 as of March 11, 2005.

Table 17 Open Caveats in VISM/VISM-PR Release 3.3.10 

DDTS Issue
Description

CSCef12950

Symptom: VISM does not disable the ECAN when the codec used is Clear Channel.

Conditions: This symptom occurs when Clear Channel is set as the upspeed codec for fax/modem calls. In addition, this occurs when Clear Channel is used as a voice codec and if ECAN is enabled during call setup.

Workaround: Do not enable the ECAN through the MGCP, if the codec to be used is Clear Channel. VISM does not reject the MGCP command if ECAN is turned on and the preferred codec is Clear Channel.

CSCeg25307

Symptom: Increasing the jitter buffer has no effect in one-way delay.

Conditions: No significant change on one way delay was observed with fixed jitter buffer settings between 60 ms and 100 ms. The expected behavior is that increasing the jitter buffer would also increase the one-way delay value. Tests were performed in AAL2 Trunking mode.

Workaround: None.

CSCeg61617

Symptom: VISM crashes hours after running PRI backhaul load.

Conditions: While running PRI backhaul load on a fully loaded VISM-PR, the card would reset after running between 12-80 hours.

Workaround: The problem is fixed in VISM Patch Release 3.3.0.202. If you are running PRI backhaul load on VISM-PR, it is recommended that you upgrade to this patch release.

Contact Cisco TAC to obtain VISM Patch Release 3.3.0.202.

CSCeg82063

Symptom: VISM is not passing packets even if received at the ATM level as shown with the dspsarcnt command.

On the contrary dsprtpconnstat does not show any RTP packets received or rejected.

Conditions:

1. VISM should run 3.2(11.202) or above.

2. The CPE should use a different UDP port as source form the UDP, one used as destination. Code 3.2(11.202) introduced this check for security reasons.

Workaround: Revert back to 3.1.

CSCeg85887

Symptom: Card resets when running T.38 load in template 4.

Conditions: When configured to template 4, VISM DSPs crash if running T.38 GW mode load.

Workaround: Configure the VISM card to template 3, which supports T.38 fax relay.

CSCeg86053

Symptom: In 3.3.10 release, when using ATM Fax Relay feature, VISM checks for at least 200 cps to be available before it can upspeed the CID to Fax Relay mode.

However, it utilizes only 50 cps once in Fax Relay mode.

Conditions: This affects fax calls on VISM when using a template in AAL2 trunking mode. The configured bandwidth is lesser than that used by fax passthrough.

Workaround: Configure the PVC with extra bandwidth of 140 cps, which allows the fax calls on VISM to upspeed to Fax Relay mode.

CSCeg86125

Symptom: When VISM is working with Arris MTAs through DTMF relay and the DTMF digits duration is no more than 50 ms, Arris MTA fails to outpulse the digits correctly. MTAs from other vendors work fine.

Conditions: This only happens to Arris MTAs when the DTMF digits are less than or equal to 50 ms. For digits longer than 50 ms, it works fine.

Workaround: None.

CSCeh35201

Symptom: VISM crash with E1 CCS load. ATMizier not responding.

Conditions: This reset happens in AAL2 Trunking mode with CCS channels that are configured with signaling PVCs.

Workaround: Do not configure CCS channels with signaling PVCs. Use Clear Channel codec with bearer PVCs to transport signaling.

CSCeh36322

Symptom: Six extra packets cause metallic voice.

When 6 out-of-order RTP packets are received, PSTN side hears robotized voice with the following configuration:

dejitter buffer mode: fixed without timestamp

initial delay: 20 ms

codec: G.711A

packetization period: 20 ms

Conditions: This problem happens in fixed without timestamp dejitter mode and the above specific configuration.

This issue does not happen when less than or more than 6 packets are received.

This issue is cleared by another extra packet being added or one packet being dropped.

Workaround: Use fixed with timestamp dejitter buffer mode.

CSCeh47379

Symptom: CCS AAL2 Trunking load of 200 V.110 calls cause reset.

VISM-E1/VISM-PR-E1 cards might intermittently reset. For a non-redundant configuration, the card resets and comes back active. If redundancy is configured, the card fails over to a redundant card. PXM log shows reset reason as "Watchdog Timeout".

Conditions: VISM-E1/VISM-PR-E1 might intermittently reset if all of the following conditions are met:

1. Card is configured for AAL2 Trunking mode.

2. Statistics upload feature for VISM-E1/VISM-PR-E1 is enabled, including CID statistics. By default, statistics upload feature is disabled.

3. VISM-E1/VISM-PR-E1 has 200 or more CIDS configured.

Workaround: One of the following workarounds can be applied, depending on the customer's requirements related to statistics upload to minimize an impact to their statistics upload capability.

1. Disable statistics upload feature all together for all narrow band service module (NBSM) cards.

2. Enable statistics upload feature only for other NBSMs only.

3. Enable statistics upload feature for VISM-E1/VISM-PR-E1, but only for PVC and/or line statistics (no CID statistics enabled).


Caveats in Release 3.3

This section describes the resolved and open software caveats in VISM/VISM-PR Release 3.3.

Resolved Caveats in Release 3.3

Table 18 describes the caveats that have been resolved in VISM/VISM-PR Release 3.3.

Table 18 Resolved Caveats in VISM/VISM-PR Release 3.3 

DDTS Issue
Description

CSCed10672

VISM supports 217 AAL2 SVC calls on VISM-PR-E1 only.

CSCed43103

VISM should not send any P2P messages in Alarm mode.

CSCed43668

Display of AIS delay time should display remaining time also.

CSCed66304

Video conference freezing under mixed traffic condition.

CSCed74024

T.38 CA controlled mode calls fail after successful initial run.

CSCed83124

CIDs oos while adding when the con is down even enough bandwidth is available.

CSCed84289

Wrong encoding of bits type in ABCD incoming and outgoing pattern.

CSCed85909

Proper error message should be thrown if Channel Modification not possible.

CSCed86492

VISM does not send busybearercode on random endpts with bulk ATM alarms.

CSCed86763

MIB gets set to none no matter which value is set.

CSCed87750

Line alarms with restoration of ATM trunks.

CSCed88798

During VISM line alarm VISM sends voice packets to network.

CSCed88838

Implement OAM CC cells transmission on VISM.

CSCed89176

Walk on rsvpIfRefreshInterval does not work.

CSCed89221

JitterInitialDelay cannot be SET to non-multiples of 5 for lossless.

CSCed91157

Wrong Transtbl is associated with DSX0 though returns failure.

CSCed92129

Adding CIDs on the second PVC puts all the CIDs oos.

CSCed92165

CID stays in fail state even after LOS got cleared.

CSCed95335

AAL2 Trunking - cnfcodectmpl does not check for CIDs codec types.

CSCee03210

T38 interop fails between VISM and 2421.

CSCee07416

No trap is sent when only BearerBusyCode is change through SNMP set.

CSCee07440

Switch agent should reject SET on BearereBusyCode, if TrunkCond disable.

CSCee09073

VISM 3.2.1-vism_cid table is not updated when changed admin state.

CSCee13138

VISM-PR unreachable from IP cloud.

CSCee20389

tstdelay measurement reported as us instead of ms.

CSCee21753

CAS template allowed to create with out-of-range index 21 by SNMP.

CSCee22756

Media Start package-Packet detector work only on first DSP channel.

CSCee29268

REG5+: VISM MSG #9059 missing from legacy/vismGlobals.c.

CSCee31685

VISM sends extra concealment when init delay is 20 ms and 3 packet lost.

CSCee32065

911 Operator Ringback Fails on VISM.

CSCee35515

CAS signaling channel not programmed during DSP redownload.

CSCee37609

Adding multiple endpoints succeeds but failure reported.

CSCee54848

Spurious upspeed on VISM 3.2.10.

CSCee61267

Increase of PVC bandwidth should be allowed when CIDs are active.

CSCee66023

DSPs failed when running calls on Clear Channel with timestamp enable.

CSCee68257

Support 64 character domain name on VISM.

CSCef23824

VISM card resets when multiple DSPs fail.

CSCef26389

Clock slips on VISM while running load.

CSCin69879

VISM resets on giving addcon with MBS = 0.


Open Caveats

Table 19 describes the open caveats in VISM/VISM-PR Release 3.3 as of September 27, 2004.

Table 19 Open Caveats for VISM/VISM-PR Release 3.3 

DDTS Issue
Description

CSCec54765

Symptom: VISM regenerates incorrect DTMF on-times in VoIP Trunking mode.

Conditions: When DTMF digits with on-times of less than 50 ms are detected on the near-end VISM, the digits are regenerated with inconsistent on/off times on the far end VISM.

Workaround: Ensure the DTMF digits that are detected have an on-time value greater than 50-60 ms (preferably greater than 60 ms).

CSCed59217

Symptom: VISM-PR keeps sending DTMF digits when no digit is pressed.

Conditions: By random press of the digits on both on-net and off-net phone or the combination of various digits at the same time, the VISM-PR card sends out the DTMF payload type 101 packets every 50 ms (like retransmission) even when digit is entered from the TDM side.

Workaround: Press another digit in the normal fashion to clear the problem.

CSCed83268

Symptom: Lower than expected throughput on V.90 modem calls over AAL2. Some modem calls speed shift to V.34 speeds and/or retrain.

Conditions: This symptom occurs with VISM to VISM calls as well as VISM to VXSM calls.

Workaround: None.

CSCee92429

Symptom: Voice quality issue due to AAL2 packet drops.

Conditions: Configure 248 CIDS with G.711a 5 ms with VAD off and subcell muxing enabled from one VISM-PR-E1 to another VISM-PR-E1.

Delete some CIDS on one VISM-PR and re-add. The following errors are seen on other side thus causing voice quality issue:

AAL2 HEC errors

AAL2 invalid OSF cells

AAL2 invalid length

Workaround:

1. Turn subcell muxing off and/or turn VAD on.

2. Use G.729 or other 10 ms/20 ms codecs.

CSCef02022

Symptom: VISM advertising the NTE capability with DTMF relay disabled.

Conditions: When DTMF Relay is disabled on the VISM, the NTE capability is still advertised by the VISM.

Specifically, when the VISM is configured for DTMF relay off (cnfvoiptransparams 2 1 1 1), VISM response to the call agent still advertises the VISM bearer capability to use NTE for digits 0-15.

Workaround: None.

CSCef32606

Symptom: DSPs stop responding to ping after re-download is initiated when DSPs failed.

Conditions: This condition is random. Some DSPs might or might not re-download. This symptom happens when you have connections that are associated with the DSPs prior to the failure. DSP status is not in active state.

Workaround: Reset the card.

CSCef39465

Symptom: When the cell rate on one of the VISM connection exceeds its PCR value, HEC Errors and Invalid OSF cell counters starts incrementing on all of the connections on the VISM card.

Conditions: This problem happens only in AAL2 trunking mode and with subcell multiplexing on.

Workaround: Having a sufficient PCR value on all the VISM connections so that the cell rate on any of the connections exceeds the PCR value is the only solution.

CSCef55005

Symptom: When running high traffic load scenarios with eight fully loaded E1 spans in VoIP switching mode, traffic might include upspeed to G.711, clear channel, or nailed up G.711 voice connections.

Packet loss might be encountered on occasion.

Conditions: This symptom occurs when concurrent traffic load of G.711 or clear channel with VAD off is sustained on lines with greater than 220 DS0s.

Workaround: For G.711 use VAD on because this issue does not occur with VAD on. Currently for clear channel the recommendation is not to load more than seven spans when utilizing 3.3 release.

CSCef55425

Symptom: Path confirmation failures—G.729a codec, adaptive jitter delay.

Conditions: At 11 calls per second, 3% of the voice calls fail with path confirmation errors (subsequent).

VISM configuration is ISDN-G729a with template 1. Jitter buffer is adaptive with initial delay set at 60 ms.

Workaround: Configure fixed jitter buffer delay of any value should resolve this problem for G.729a codec.

CSCef69692

Symptom: Mibwalk stuck in loop on catsAal2PvcHistoryTable.

Conditions: Multiple PVCs with multiple bucket interval updates for statistics causes this symptom to occur.

Workaround: No workarounds exist for the mibwalk. Except, run the mibwalks right after a card reset.

Note SNMP gets for objects within the table work correctly.

CSCef72611

Symptom: Path confirmation failures with CCD calls and VISM 3.1(3.x).

Conditions: Voice quality degrades (hiss) when running Clear Channel codec when the originating and terminating VISM cards are running different images, for example 3.1.3.x and 3.2.x.x.

This problem is not seen with any other codec or when running the Clear Channel codec on both VISM cards that are running the same version.

Workaround: Configure VISM to utilize a different codec during upgrades. And/or upgrade both VISM cards to the same version before running Clear Channel voice traffic.

CSCef81423

Symptom: BTS VoIP Switch T1 CAS 15 CPS load causes card resets.

Conditions: This problem exists only during CAS call load. VISM supports call rates up to a maximum call load of 10 cps.

Workaround: Ensure the call rate for a fully loaded VISM card that is configured for CAS voice traffic does not exceed the supported rate of 10 cps.

CSCeg47932

Symptom: 64 character VISM domain name causes VISM card to hang.

Conditions: After adding a 64 character VISM domain name using the cnfvismdn command, the card resets. When the card becomes active and you execute the dspvismdn command, the response shows (null) instead of the vism domain name.

If you try to execute the cnfvismdn command again, the prompt hangs indefinitely.

This problem is similar to caveat CSCee68257, regarding the call agent domain names instead of the VISM domain name.

This symptom occurs on VISM cards with Release 3.3 and a 64 character VISM domain name.

Workaround: Clear the configuration and enter only vism domain names with a maximum length of 63 characters.


Related Documentation

The following documents contain information that may be useful to software Release 3.3.25 for VISM/VISM-PR:

Cisco Voice Interworking Services (VISM) Configuration Guide and Command Reference, Release 3.3

Cisco MGX 8830, MGX 8850 (PXM45 and PXM1E), and MGX 8950 Command Reference, Release 5

Cisco MGX 8850 (PXM45 and PXM1E) Hardware Installation Guide, Release 5

Cisco MGX 8850 (PXM45) and MGX 8950 Software Configuration Guide, Release 5

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