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Cisco MGX 8880 Media Gateways

Release Notes for Cisco Voice Interworking Service Module Release 3.3.30

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Table Of Contents

Release Notes for Cisco Voice Interworking Service Module Release 3.3.30

Table of Contents

About Release 3.3.30

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 3.3.30

G.723 codec for VoATM

cnfprofparams

cnfprofelemvoice

cnfprofelemvbd

dspprofparams

dspaal2profile

Enhanced Support for Controlling the EcanControl for Clearchannel Codec

cnfvbdcodec

dspvbdcodec

cnfprofelemvbd

Codec Upspeed for Fax Modems

cnflnfaxmodem

Interoperability with 1AESS Switch

cnflnsig

dspln

New Features Introduced in Release 3.3.25

SPVC Capacity Expansion

VISM-PR Alarm Events Reported in the MGX Log File

cnflnalmlog

cnfpvcalmlog

cnfallalmlog

dspalmlog

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

Upgrading VISM-PR with PXM1E and PXM45

Downgrading VISM/VISM-PR

Upgrading VISM to VISM-PR Hardware

Caveats in Release 3.3.30

Resolved Caveats in Release 3.3.30

Open Caveats in Release 3.3.30

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

Product Alerts and Field Notices

Obtaining Technical Assistance

Cisco Technical Support & Documentation Website

Submitting a Service Request

Definitions of Service Request Severity

Obtaining Additional Publications and Information


Release Notes for Cisco Voice Interworking Service Module Release 3.3.30

Part Number OL-11146-01 Revision A0, August 29, 2006

The Voice Interworking Service Module (VISM) product is supported by Cisco 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 at Cisco.com.

Table of Contents

About Release 3.3.30

VISM/VISM-PR Release 3.3.30 is a maintenance release of Release 3.3.25 and contains new features for VISM-PR. For a description of these features, see the "New Features Introduced in Release 3.3.30" section.

For a list of the caveats in this release, see the "Caveats in Release 3.3.30" section.

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 3.3.30" section

• "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 3.3.30" 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

• "Product Alerts and Field Notices" section

• "Obtaining Technical Assistance" section

• "Obtaining Additional Publications and Information" section

New Features Introduced in Release 3.3.30

This section describes the following new features:

• G.723 codec for VoATM

• Enhanced Support for Controlling the EcanControl for Clearchannel Codec

• Codec Upspeed for Fax Modems

• Interoperability with 1AESS Switch

G.723 codec for VoATM

Release 3.3.30 supports the G.723 codec with upspeed option for VoATM circuits. G.723 codecs with a packetization period of 30 ms can reduce the bandwidth requirements for voice traffic and improve the bandwidth utilization of existing AAL2 trunks. To support fax/data modem traffic, an upspeed procedure can change from G.723 to G.711 after detection of fax/data modem tones. For more information about the upspeed option, see the "Codec Upspeed for Fax Modems" section.

A new custom profile supports the G.723 codec for VoATM. Table 2 shows the default values for custom profile 211.

Table 2 Custom Profile 211

UUI Range
Packet Length (octet)
Codec
SID
M
Packet time (ms)
Sec. No. Interval (ms)

8-15

40

PCMU

No SID

1

5

5

8-15

40

PCMA

No SID

1

5

5

0-7

40

Clear Channel

No SID

40

5

5

0-15

24

G723AH

SID723

1

30

5

0-15

24

G723H

No SID

1

30

5

0-15

20

G723AL

SID723

1

30

5

0-15

20

G723L

No SID

1

30

5


The following commands are modified to accommodate custom profile 211. In each case, the command has a new parameter for selecting custom profile 211. The MIB for Release 3.3.30 supports this profile as well.

• cnfprofparams

• cnfprofelemvoice

• cnfprofelemvbd

• dspprofparams

• dspaal2profile

cnfprofparams

To configure a profile preference for a channel, use the cnfprofparams command.

cnfprofparams <profileType> <profileNumber> <profilePreference>

Syntax Description

profileType

Profile type to be used for the channel.

•1 = International Telecommunication Union (ITU) I.366.2

•3 = Custom

profileNumber

Number of the profile.

•1 = ITU profile

•2 = ITU profile

•3 = ITU profile

•7 = ITU profile

•8 = ITU profile

•12 = ITU profile

•100 = Custom profile

•101 = Custom profile

•110 = Custom profile

•200 = Custom profile

•200 = Custom profile

•201 = Custom profile

•210 = Custom profile

•211 = Custom profile (G.723 codec)

profilePreference

Profile preference. It can be one of the following values:

•0 = No preference; exclude the profile from xGCP profile negotiation.

•1-13, where 1 is the highest preference (default) and 13 is the lowest preference.


Command Modes

AAL2 trunking, switched AAL2 SVC and switched AAL2 PVC

Usage Guidelines

Follow standard CLI procedures for this command.

Examples

In the following example, the ITU profile type, profile number 1 is configured with the midrange preference level of 4: 

nodename.1.27.VISM8.a > cnfprofparams 1 1 4


nodename.1.27.VISM8.a >

Use the dspprofparams command to view the profile parameters.

Related Commands

Command
Description

dspprofparams

Displays the profile elements and preferences for all profiles.


cnfprofelemvoice

To configure the profile voice element, use the cnfprofelemvoice command.

cnfprofelemvoice <profileType> <profileNumber> <voice_codec_type> <pktPeriod> <sid>

profileType

Profile type to be used for the CID.

•1 = International Telecommunication Union (ITU) I.366.2

•3 = Custom

profileNumber

Number of the profile.

•1 = ITU profile

•2 = ITU profile

•3 = ITU profile

•7 = ITU profile

•8 = ITU profile

•12 = ITU profile

•100 = Custom profile

•101 = Custom profile

•110 = Custom profile

•200 = Custom profile

•201 = Custom profile

•210 = Custom profile

•211 = Custom profile (G.723 codec)

voice_codec_type

Type of coding/decoding to be performed on the data stream.

•1 = G.711u

•2 = G.711a

•3 = G.726-32k

•4 = G.729a

•5 = G.729ab

•6 = Clear channel (VAD must be off)

•7 = G.726-16k

•8 = G.726-24k

•9 = G.726-40k

•11 = G.723.1-H

•12 = G.723.1a-H

•13 = G.723.1-L

•14 = G.723.1a-L

•15 = Lossless (VAD must be off)

pktPeriod

Voice packetization period (defined in milliseconds).

•5

•10

•20

•30

•40

sid

Silence insertion descriptor (SID).

•1 = VAD off

•2 = VAD on

•3 = SID generic

•4 = SID 729

•5 = SID 723


Command Modes

AAL2 trunking, switched AAL2 SVC and switched AAL2 PVC

Usage Guidelines

Use the dspaal2profile command to identify valid combinations of codec type, packetization period, and SID.

The G.723.1 codecs are supported for VISM-PR cards and are not supported for VISM cards.

Examples

In the following example, the ITU profile type on profile number 1 is configured with the G.711a codec type, a packetization period of 5 ms, and VAD enabled: 

nodename.1.27.VISM8.a > cnfprofelemvoice 1 1 2 5 2


nodename.1.27.VISM8.a >

Use the dspprofparams to view your configurations.

Related Commands

Command
Description

cnfprofelemvbd

Configures the VBD profile element for a profile.

dspaal2profile

Displays information about a specified AAL2 profile type and profile number.

dspprofparams

Displays the profile elements and preferences for all profiles.


cnfprofelemvbd

To configure the voiceband data (VBD) profile element for a profile, use the cnfprofelemvbd command.

cnfprofelemvbd <profileType> <profileNumber> <codecType> <pktPeriod>

Syntax Description

profileType

Profile type to be used for the channel identifier (CID).

•1 = International Telecommunication Union (ITU) I.366.2

•3 = Custom

profileNumber

Number of the profile.

•1 = ITU profile

•2 = ITU profile

•3 = ITU profile

•7 = ITU profile

•8 = ITU profile

•12 = ITU profile

•100 = Custom profile

•101 = Custom profile

•110 = Custom profile

•200 = Custom profile

•201 = Custom profile

•210 = Custom profile

•211 = Custom profile (G.723 codec)

codecType

Type of coding/decoding to be performed on the data stream.

•1 = G.711u

•2 = G.711a

•3 = G.726-32k

•6 = Clear channel (VAD must be off)

•7 = G.726-16k

•8 = G.726-24k

•9 = G.726-40k

•11 = G.723.1-H

•13 = G.723.1-L

•14 = G.723.1a-L

•15 = Lossless (VAD must be off)

pktPeriod

Voiceband data packetization period (defined in milliseconds).

•5

•10

•20

•30

•40


Command Modes

AAL2 trunking, switched AAL2 SVC and switched AAL2 PVC

Usage Guidelines

Use the dspaal2profile command to identify valid combinations of codec type, packetization period, and silence insertion descriptor.

The G.723.1 codecs are supported for VISM-PR cards and are not supported for VISM cards.

Examples

In the following example, the ITU profile type, profile number 1 is configured with G.711a codec type and a 5-ms packetization period: 

nodename.1.27.VISM8.a > cnfprofelemvbd 1 1 2 5 


nodename.1.27.VISM8.a >

Use the dspprofparams to view your configurations.

Related Commands

Command
Description

cnfprofelemvoice

Configures the voice profile element for a profile.

dspaal2profile

Displays AAL2 profile type and profile number data.

dspprofparams

Displays the profile elements and the preferences for all profiles.


dspprofparams

To display the profile elements and the preferences for all profiles, use the dspprofparams command.

dspprofparams

Syntax Description

This command has no arguments or keywords.

Command Modes

AAL2 trunking, switched AAL2 SVC and switched AAL2 PVC

Usage Guidelines

When you execute this command, the display includes the default voice and voiceband data profile element that corresponds to each supported profile.

Examples

In the following example, the profile elements and preferences for all profiles are displayed: 

nodename.1.5.VISM8.a > dspprofparams

- - - - - - - - - - - - - - - - - - - - - -

      Profile Type                          : ITU

      Profile Number                        : 1

      Profile Preference                    : 4

      Voice Profile Codec                   : G.711u

      Voice Profile Packetization-period(ms): five

      Voice Profile SID                     : VAD on

      VBD Profile Codec                     : G.711u

      VBD Profile Packetization-period (ms) : five

      VBD Profile Ecan Control              : enable

      - - - - - - - - - - - - - - - - - - - - - -

      Profile Type                          : ITU

      Profile Number                        : 2

      Profile Preference                    : 3

      Voice Profile Codec                   : G.711u

      Voice Profile Packetization-period(ms): five

      Voice Profile SID                     : sidGenric

      VBD Profile Codec                     : G.711u

      VBD Profile Packetization-period (ms) : five

      VBD Profile Ecan Control              : enable

      - - - - - - - - - - - - - - - - - - - - - -

      Profile Type                          : ITU

      Profile Number                        : 3

      Profile Preference                    : 1

      Voice Profile Codec                   : G.726-32K

      Voice Profile Packetization-period(ms): five

      Voice Profile SID                     : sidGenric

      VBD Profile Codec                     : G.711u

      VBD Profile Packetization-period (ms) : five

      VBD Profile Ecan Control              : enable

      - - - - - - - - - - - - - - - - - - - - - -

      Profile Type                          : ITU

      Profile Number                        : 7

      Profile Preference                    : 2

      Voice Profile Codec                   : G.729ab

      Voice Profile Packetization-period(ms): ten

      Voice Profile SID                     : sid729

      VBD Profile Codec                     : G.711u

      VBD Profile Packetization-period (ms) : five

      VBD Profile Ecan Control              : enable

     - - - - - - - - - - - - - - - - - - - - - -

      Profile Type                          : ITU

      Profile Number                        : 8

      Profile Preference                    : 5

      Voice Profile Codec                   : G.729ab

      Voice Profile Packetization-period(ms): ten

      Voice Profile SID                     : sid729

      VBD Profile Codec                     : G.711u

      VBD Profile Packetization-period (ms) : five

      VBD Profile Ecan Control              : enable

      - - - - - - - - - - - - - - - - - - - - - -

      Profile Type                          : ITU

      Profile Number                        : 12

      Profile Preference                    : 10

      Voice Profile Codec                   : G.723.1a-H

      Voice Profile Packetization-period(ms): thirty

      Voice Profile SID                     : sid723

      VBD Profile Codec                     : G.723.1-H

      VBD Profile Packetization-period (ms) : thirty

      VBD Profile Ecan Control              : enable

      - - - - - - - - - - - - - - - - - - - - - -

      Profile Type                          : Custom

      Profile Number                        : 100

      Profile Preference                    : 6

      Voice Profile Codec                   : G.726-32K

      Voice Profile Packetization-period(ms): ten

      Voice Profile SID                     : sidGenric

      VBD Profile Codec                     : G.711u

      VBD Profile Packetization-period (ms) : five

      VBD Profile Ecan Control              : enable

      - - - - - - - - - - - - - - - - - - - - - -

      Profile Type                          : Custom

      Profile Number                        : 101

      Profile Preference                    : 7

      Voice Profile Codec                   : G.729ab

      Voice Profile Packetization-period(ms): ten

      Voice Profile SID                     : sid729

      VBD Profile Codec                     : G.711u

      VBD Profile Packetization-period (ms) : five

      VBD Profile Ecan Control              : enable

     - - - - - - - - - - - - - - - - - - - - - -

      Profile Type                          : Custom

      Profile Number                        : 110

      Profile Preference                    : 8

      Voice Profile Codec                   : G.729ab

      Voice Profile Packetization-period(ms): thirty

      Voice Profile SID                     : sid729

      VBD Profile Codec                     : G.711u

      VBD Profile Packetization-period (ms) : five

      VBD Profile Ecan Control              : enable

      - - - - - - - - - - - - - - - - - - - - - -

      Profile Type                          : Custom

      Profile Number                        : 200

      Profile Preference                    : 9

      Voice Profile Codec                   : clr chan

      Voice Profile Packetization-period(ms): five

      Voice Profile SID                     : VAD off

      VBD Profile Codec                     : clr chan

      VBD Profile Packetization-period (ms) : five

      VBD Profile Ecan Control              : enable

      - - - - - - - - - - - - - - - - - - - - - -

      Profile Type                          : Custom

      Profile Number                        : 201

      Profile Preference                    : 11

      Voice Profile Codec                   : Lossless

      Voice Profile Packetization-period(ms): five

      Voice Profile SID                     : VAD off

      VBD Profile Codec                     : Lossless

      VBD Profile Packetization-period (ms) : five

      VBD Profile Ecan Control              : enable

      - - - - - - - - - - - - - - - - - - - - - -

      Profile Type                          : Custom

      Profile Number                        : 210

      Profile Preference                    : 12

      Voice Profile Codec                   : G.729a

      Voice Profile Packetization-period(ms): twenty

      Voice Profile SID                     : VAD off

      VBD Profile Codec                     : G.711u

      VBD Profile Packetization-period (ms) : five

      VBD Profile Ecan Control              : enable

      - - - - - - - - - - - - - - - - - - - - - -

      Profile Type                          : Custom

      Profile Number                        : 211

      Profile Preference                    : 13

      Voice Profile Codec                   : G.723.1a-H

      Voice Profile Packetization-period(ms): thirty

      Voice Profile SID                     : sid723

      VBD Profile Codec                     : G.711u

      VBD Profile Packetization-period (ms) : five

      VBD Profile Ecan Control              : enable

Related Commands

Command
Description

cnfprofelemvbd

Configures the VBD profile element for a profile.

cnfprofelemvoice

Configures the voice profile element for a profile.

cnfprofparams

Configures a profile preference.


dspaal2profile

To display data about a specified AAL2 profile type and profile number, use the dspaal2profile command.

dspaal2profile <profileType> <profileNumber>

Syntax Description

profileType

Profile type to be used for the CID.

•1 = International Telecommunication Union (ITU) I.366.2

•3 = Custom

profileNumber

Number of the profile.

•1 = ITU profile

•2 = ITU profile

•3 = ITU profile

•7 = ITU profile

•8 = ITU profile

•12 = ITU profile

•100 = Custom profile

•101 = Custom profile

•110 = Custom profile

•200 = Custom profile

•201 = Custom profile

•210 = Custom profile

•211 = Custom profile (G.723 codec)


Command Modes

AAL2 trunking, switched AAL2 SVC and switched AAL2 PVC

Usage Guidelines

The AAL2 profiles correspond to the profile types ITU and ATMF as defined in the ITU-T I.366.2 and ATM forum AF-VTOA-0113 standards.

Examples

In the following example, the data for AAL2 profile type 3 and profile number 110 is displayed: 

nodename.1.5.VISM8.a > dspaal2profile 3 211


   UUI      Packet                          Packet  Seq. No.

Codepoint   Length                           Time   Interval

  Range    (octets)  Codec       SID     M   (ms)     (ms)  

   8-15       40     PCMU        No SID  1     5        5    

   8-15       40     PCMA        No SID  1     5        5    

   0-7        40     CCD         No SID  40    5        5    

   0-15       24     G723AH      SID723  1     30       5    

   0-15       24     G723H       No SID  1     30       5    

   0-15       20     G723AL      SID723  1     30       5    

   0-15       20     G723L       No SID  1     30       5 


nodename.1.5.VISM8.a >

Related Commands

There are no related commands.

Enhanced Support for Controlling the EcanControl for Clearchannel Codec

In Releases 3.3.10 and earlier, when a channel is configured to use clearchannel as the voiceband data (VBD) codec, the value of Ecan cancellation is not changed. Therefore, if the initial call was set up with echo cancellation on, it remains remain on even after upspeed to clearchannel.

Cisco recommends having Ecan cancellation off with clearchannel because the CCD vbd codec should be used for carrying transparent bit streams. With Ecan cancellation off, transparent bit streams are passed transparently through VISM without modification by echo cancellers.

In Release 3.3.20, as a fix for DDTS CSCef12950, when a channel is configured to use clearchannel as VBD codec, echo cancellation is set to off for that channel.

However, some fax adapters (Gammalink and Brooktrout) require Ecan cancellation to be on to eliminate echo on the tail circuit. To accommodate such fax adapters, Release 3.3.30 adds a parameter to the VBD codec commands to enhance control of the Ecan cancellation.

By default the EcanControl parameter is set to true for Clearchannel (Ecan Cancellation is turned off). For fax adapters that require echo cancellation, set EcanControl to false (Ecan cancellation remains unchanged).

Release 3.3.30 modifies the following commands to enhance echo cancellation control for clearchannel as the VBD codec.

• cnfvbdcodec—Configures Ecan Validation in VOIP mode

A new argument enables or disables Ecan validation for a clearchannel voiceband data (VBD) codec.

• dspvbdcodec—Displays Ecan Validation in VOIP mode

A new line displays the Ecan control state.

• cnfprofelemvbd—Configures Ecan Validation in AAL2 mode

A new argument enables or disables Ecan validation for a VBD profile.

• dspprofparams—Displays Ecan Validation in AAL2 mode

A new line displays the Ecan control state.

cnfvbdcodec

To configure voiceband data (VBD) upspeed codec on the VISM card, use the cnfvbdcodec command.

cnfvbdcodec <upspeedCodec> | <payload> <ecan_control> |

Syntax Description

upspeedCodec

Upspeed codec. Values are

•1 = G.711u (default for T1)

•2 = G.711a (default for E1)

•3 = G.726-32K

•4 = Clear channel

•5 = G.723.1-H (valid for template number 4 only)

•6 = G.723.1-L (valid for template number 4 only)

•7 = G.726-16K

•8 = G.726-24k

•9 = G.726-40K

payload

(Optional) Payload type. This entry provides a mechanism for the codec to upspeed. Range is 0-256. Default is 256.

ecan_control

(Optional) Enables or disables Ecan validation. Values are

•1 = Enable (default)

•2 = Disable

Note For clear channel VBD codec only


Command Modes

VoIP switching/VoIP trunking

Usage Guidelines

VISM uses the configured codec even if, for example, the configured codec is G.726-32k and VISM is preconfigured with G.711.

If you configure clear channel, VISM does support a mixed system clock—VISM cannot be originated at a T1 line and terminated at an E1 line, or originated at an E1 line and terminated at a T1 line.

When VISM is configured with clearchannel VBD codec, the ecan_control parameter enables or disables Ecan validation. If ecan_control is enabled (default), then while upspeeding to clearchannel VBD codec, Ecan is disabled. If ecan_control is disabled, then while upspeeding to clearchannel VBD codec, Ecan is not disabled and the behavior remains as it was in release 3.2.11.

In AAL2 modes the VISM obtains the upspeed codec from the AAL2 profile table. AAL1 modes do not support compression and therefore do not require upspeed.

The G.723.1 codecs are supported for VISM-PR cards only.

Note We recommend that you not use upspeedCodec argument values 5 or 6 with this command.

Examples

In the following example, the VBD upspeed codec is configured as clearchannel, is assigned payload type 182, and Ecan validation is disabled: 

nodename.1.27.VISM8.a > cnfvbdcodec 4 128 2


nodename.1.27.VISM8.a >

Related Commands

Command
Description

addrtpcon

Adds a static RTP VoIP trunking connection.

cnfdynamicpayload

Enables or disables the dynamic payload on the current VISM card.

cnfrtpcon

Modifies an existing static RTP VoIP trunking connection.

dspdynamicpayload

Displays the card level configuration of dynamic payload on the current VISM card.

dsprtpcon

Displays the configuration data of a specific static RTP VoIP trunking connection.

dspvbdcodec

Displays the upspeed codec used for voiceband data (VBD).


dspvbdcodec

To display the upspeed codec used for voiceband data (VBD) and the payload type, use the dspvbdcodec command.

dspvbdcodec

Syntax Description

This command has no arguments or keywords.

Command Modes

VoIP switching/VoIP trunking

Usage Guidelines

Follow standard CLI procedures for this command.

Examples

In the following example, the upspeed codec used for VBD, the default payload type, and Ecan Control appear: 

nodename.1.28.VISM8.a > dspvbdcodec


 VBD UpSpeed Codec:   ClearChannel

 Payload Type     :   128

 Ecan Control     :   disable


nodename.1.28.VISM8.a >

Related Commands

Command
Description

addrtpcon

Adds a static RTP VoIP trunking connection.

cnfdynamicpayload

Enables or disables the dynamic payload on the current VISM card.

cnfrtpcon

Modifies an existing static RTP VoIP trunking connection.

cnfvbdcodec

Configures the VBD upspeed codec.

dspdynamicpayload

Displays the card level configuration of dynamic payload on the current VISM card.

dsprtpcon

Displays the configuration data of a specific static RTP VoIP trunking connection.


cnfprofelemvbd

To configure the voiceband data (VBD) profile element for a profile, use the cnfprofelemvbd command.

cnfprofelemvbd <profileType> <profileNumber> <codecType> <pktPeriod> <ecan_control>

Syntax Description

profileType

Profile type to be used for the channel identifier (CID).

•1 = International Telecommunication Union (ITU) I.366.2

•3 = Custom

profileNumber

Number of the profile.

•1 = ITU profile

•2 = ITU profile

•3 = ITU profile

•7 = ITU profile

•8 = ITU profile

•12 = ITU profile

•100 = Custom profile

•101 = Custom profile

•110 = Custom profile

•200 = Custom profile

•201 = Custom profile

•210 = Custom profile

codecType

Type of coding/decoding to be performed on the data stream.

•1 = G.711u

•2 = G.711a

•3 = G.726-32k

•6 = Clear channel (VAD must be off)

•7 = G.726-16k

•8 = G.726-24k

•9 = G.726-40k

•11 = G.723.1-H

•13 = G.723.1-L

•15 = Lossless (VAD must be off)

pktPeriod

Voiceband data packetization period (defined in milliseconds).

•5

•10

•30

ecan_control

Enables or disables Ecan validation. Values are

•1 = Enable

•2 = Disable

Note For clear channel VBD codec only


Command Modes

AAL2 trunking, switched AAL2 SVC and switched AAL2 PVC

Usage Guidelines

Use the dspaal2profile command to identify valid combinations of codec type, packetization period, and silence insertion descriptor.

The G.723.1 codecs are supported for VISM-PR cards and are not supported for VISM cards.

When VISM is configured with clearchannel VBD codec, the ecan_control parameter enables or disables Ecan validation. If ecan_control is enabled (default), then while upspeeding to the clearchannel VBD codec, Ecan is disabled. If ecan_control is disabled, then while upspeeding to clearchannel VBD codec, Ecan is not disabled and the behavior remains as it was in release 3.2.11.

Examples

In the following example, the ITU profile type, custom profile number 100 is configured for a clearchannel codec type, a 5-ms packetization period, and disables Ecan validation: 

nodename.1.27.VISM8.a > cnfprofelemvbd 3 100 6 5 2


nodename.1.27.VISM8.a >

Use the dspprofparams to view your configurations.

Related Commands

Command
Description

cnfprofelemvoice

Configures the voice profile element for a profile.

dspaal2profile

Displays AAL2 profile type and profile number data.

dspprofparams

Displays the profile elements and the preferences for all profiles.


Codec Upspeed for Fax Modems

Release 3.3.30 has a new command (cnflnfaxmodem) that enables or disables the upspeed procedure after detection of fax/modem tones. The dspln command displays the fax/modem control.

cnflnfaxmodem

To enable or disable the upspeed procedure for a line, use the cnflnfaxmodem command.

cnflnfaxmodem <line_number> <faxModemType>

Syntax Description

line_number

Number of the line you to configure. Range is 1-8.

faxModemType

Controls the upspeed procedure. Values are:

•1 = Enable

•2 = Disable

Default: 1


Command Modes

VoIP switching/VoIP trunking, AAL2 trunking, switched AAL2 SVC, switched AAL2 PVC, and VoIP trunking/AAL2 trunking

Usage Guidelines

The cnflnfaxmodem command enables or disables the upspeed procedure for all DS0s on the specified line. To view the current setting for a line, enter the dspln command.

Examples

In the following example, the upspeed procedure is disabled for line 1: 

nodename.1.27.VISM8.a > cnflnfaxmodem 1 2

Related Commands

Command
Description

dspln

Displays the characteristics of a VISM/VISM-PR line.


Note For an example of the dspln comand showing the status of LineFaxModem, see dspln.

Interoperability with 1AESS Switch

Release 3.3.30 extends VISM signaling capabilities to include interoperation with 1AESS switches.

1AESS Signaling Overview

The Lucent 1AESS local exchange telephone switching system was widely deployed in the 1970s across what was then the Bell System. Most 1AESS switches are replaced by the next-generation digital switches, such as the Lucent 5ESS and Nortel DMS-100. While few 1AESS switches remain, those still in service are generally heavily built-out. About 2 to 5 percent of lines are on 1AESS switches.

Service providers that offer wholesale dial, Internet/intranet, and access virtual private networks (VPNs) require remote access and expect to provide widely available service at the lowest cost. To do so, they must have Signaling System 7 (SS7) trunks to each local exchange in a service area. And for Internet service providers (ISP) or competitive local exchange carriers (CLEC) that want 100 percent dial coverage, an interface to the remaining 1AESS switches is mandatory.

Even though 1AESS switches use out-of-band SS7 signaling, they cannot disable robbed-bit signaling (RBS). Therefore, gateways that connect to the 1AESS switch must send a steady A/B bit status on specific SS7-controlled lines to prevent the 1AESS tandem from bringing trunks down and placing them in the out-of-service state. Any fluctuation in the received A/B bits might force the entire line on a 1AESS switch into the out-of-service state. To address the sensitivity of 1AESS switch to A/B bits, the connected MGX switch must send a steady stream of A/B bits towards 1AESS switch that corresponds the activity (call setup, call tear down, COT operations) on the DS0.

Configuring VISM for 1AESS Signaling

For VISM to interoperate with the 1AESS switch, you configure the VISM module to send a specific, steady A/B/C/D bit pattern to the 1AESS switch when the call is active (seize pattern) and another steady A/B/C/D bit pattern when there is no call (idle pattern). The cnflnsig command has a new signaling_type option for enabling this feature, and the dspln command displays the corresponding LineSignalingType.

Note The 1AESS feature is supported in VOIP switching mode only. Do not configure 1AESS signaling in any other mode (CSCek38088).

cnflnsig

To configure the signaling mode for a VISM/VISM-PR line, use the cnflnsig command.

cnflnsig <line_number> <signaling_type>

Syntax Description

line_number

Number of the line you want to bring to the out-of-service state. Range is 1-8.

signaling_type

Signaling type of the line. Values are

•1 = Channel-associated signaling (CAS)

•2 = Common channel signaling (CCS)

•3 = No signaling

•4 = 1AESS (only for T1)


Command Modes

VoIP switching/VoIP trunking, AAL2 trunking, AAL1 switching, switched AAL2 SVC, switched AAL2 PVC, VoIP and AAL1 SVC, and VoIP trunking/AAL2 trunking

Usage Guidelines

Confirm your entry when using this command to ensure that the signaling type is not changed while endpoints are configured for the line indicated by the line_number argument.

This command is not allowed when CIDs or CCS channels are present.

Configure the line type as either E1MF or E1MFCRC for E1 lines. Otherwise, this command is invalid.

Examples

In the following example, line 1 is configured for 1AESS: 

nodename.1.27.VISM8.a > cnflnsig 1 4


nodename.1.27.VISM8.a >

Related Commands

Command
Description

dspln

Displays the characteristics of a VISM/VISM-PR line.


dspln

To display the configuration data of a VISM card line, use the dspln command.

dspln <line_number>

Syntax Description

line_number

Number of the line for which you want to display the configuration data. Range is 1-8.


Command Modes

VoIP switching/VoIP trunking, AAL2 trunking, AAL1 switching, switched AAL2 SVC, switched AAL2 PVC, VoIP and AAL1 SVC, and VoIP trunking/AAL2 trunking

Usage Guidelines

Follow standard CLI procedures for this command.

Examples

In the following example, the configuration data for line number 1 is displayed: 

nodename.1.27.VISM8.a >dspln 1


LineNum:                   1