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Cisco Unified Communications Manager (CallManager)

Enhanced Transcoding and Conferencing for IOS Voice Gateways in a CallMananger Network using DSP Resources Configuration Example

Cisco - Enhanced Transcoding and Conferencing for IOS Voice Gateways in a CallMananger Network using DSP Resources Configuration Example

Document ID: 91863

Updated: May 30, 2007

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Introduction

This document describes how to configure Enhanced transcoding and conferencing for Cisco IOS® Voice Gateway Routers in a Cisco Unified CallManager network.

There are two types of Digital Signal Processors (DSPs) that can register with Cisco CallManager C549 or C5510. The type of DSPs determine how the DSP resource registers with Cisco CallManager. C5510s register to Cisco CallManager as Cisco IOS Enhanced (Conference Bridge or Transcoder), while the C549s register as Cisco IOS (Conference Bridge or Transcoder) type. In this document, you work with the C5510 DSPs which are part of the next generation PVDM2 DSPs.

Prerequisites for Conferencing and Transcoding for Voice Gateway Routers

DSP Resources

The router must be equipped with C5510 DSPs in order to provide DSP resources for conferencing, transcoding, and hardware Media Termination Point (MTP) services and register with CallManager as a Cisco IOS Enhanced Media Resource.

Codecs

End-user devices must be equipped with one of these codecs:

Codec Packetization Periods for Transcoding (ms)
G.711 a-law, G.711 u-law 10, 20, or 30
G.729, G.729A, G.729B, G.729AB 10, 20, 30, 40, 50, or 60
GSM EFR, GSM FR * 20

* Supported for NM-HDV2 and NM-HD-1V/2V/2VE only.

Components Used

The information in this document is based on these software and hardware versions:

  • Cisco IOS Software Release 12.4(9)T

  • Cisco 3845 Series Router with on-board DSP modules (PVDM2-64)

  • Cisco CallManager 4.1(3)

The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, make sure that you understand the potential impact of any command.

Feature History for Enhanced Conferencing and Transcoding for Voice Gateway Routers

Cisco IOS Software Release Modification
12.3(11)T Support was added for the PVDM2 on the Cisco 2800 Series and Cisco 3800 Series Voice Gateway Routers.

Restrictions for Conferencing and Transcoding for Voice Gateway Routers

  • DSP resources communicate with Cisco Unified CallManager using Skinny Client Control Protocol (SCCP). Other protocols are not supported.

  • DSP resources cannot be enabled for a slot on the Cisco 1700 Series so the dsp services dspfarm command is not supported and cannot be configured for a voice card on the Cisco 1700 Series.

  • Conferencing is not supported on a Cisco 3640 using the NM-HD-1V, NM-HD-2V, or NM-HD-2VE.

  • Hardware MTPs support only G.711 a-law and G.711 u-law. If you configure a profile as a hardware MTP, and you want to change the codec to something other than G.711, you must first remove the hardware MTP by using the no maximum sessions hardware command.

  • Software MTPs are supported on the router only if the dsp services dspfarm command is not enabled on the voice card.

  • Only one codec is supported for each MTP profile. In order to support multiple codecs, you must define a separate MTP profile for each codec.

  • If an MTP call is received but MTP is not configured, transcoding is used if resources are available.

  • Dynamic conference and transcoding resource allocation is not supported.

  • Fax is not supported for transcoding.

Conventions

Refer to Cisco Technical Tips Conventions for more information on document conventions.

Conferencing and Transcoding for Voice Gateway Routers Information

In order to configure Cisco conferencing and transcoding, you should understand these concepts:

Configure

In this section, you are presented with the information to configure the features described in this document.

Note: Use the Command Lookup Tool (registered customers only) to obtain more information on the commands used in this section.

Network Diagram

Note: This network topology does not suggest that you use this deployment in your environment. In order to determine which deployment model is best for your environment, refer to Cisco Unified Communications Solution Reference Network Design (SRND) Based on Cisco Unified CallManager 4.x.

Cisco CallManager 4.1(3) is deployed in a centralized call processing architecture and provides geograhic-redundancy across the corporate Wide Area Network (WAN), with the use of Cisco 3845 Series Voice Gateways. Voice gateways are H.323 to CallManager for call set up signaling.

For this example, DSP resources are only configured on one Cisco 3845 Voice Router (172.31.255.1) and registered to the Cisco CallManager cluster.

trans-conf-iosgw-ccm-1.gif

Configure the DSP Resources

This section details how to complete this procedure:

  1. Enable and configure Skinny Client Control Protocol (SCCP) on the voice gateway to communicate with Cisco CallManager.

  2. Configure DSP resources for transcoding.

  3. Create a Cisco CallManager group and associate the DSP farm transcoding profile.

  4. Configure DSP resources for conferencing.

  5. Create Cisco CallManager group and assign the DSP farm conferencing profile.

  6. Modify the default settings for SCCP connection to CallMananger (optional).

  7. Configure a Media Resource in Cisco CallManager for transcoding.

  8. Configure a Media Resource in Cisco CallManager for conferencing.

  9. Create and assign a Media Resource Group in Cisco CallManager.

  10. Create and assign a Media Resource Group List in Cisco CallManager.

  11. Verify the DSP farm configuration.

Complete these steps.

  1. Enable and configure Skinny Client Control Protocol (SCCP) on the voice gateway to communicate with Cisco CallManager.

    tvg-3845-1
    
    !--- Only the relevant configuration is shown.
    
    tvg-3845-1>enable 
    tvg-3845-1#configure terminal
    tvg-3845-1(config)#sccp ccm 192.168.252.18 identifier 18 priority 1 version 4.1
    
    !--- This sccp ccm command adds CallManager server(s) 
    !--- to the list of available servers to which the voice gateway can register.
    
    tvg-3845-1(config)#sccp ccm 192.168.198.5 identifier 5 priority 2 version 4.1
    tvg-3845-1(config)#sccp ccm 192.168.198.4 identifier 4 priority 3 version 4.1
    tvg-3845-1(config)#sccp ccm 192.168.252.11 identifier 11 priority 4 version 4.1
    tvg-3845-1(config)#sccp local loopback 1 
    
    !--- Selects the local interface that SCCP applications 
    !--- use to register with Cisco Unified CallManager.
    
    tvg-3845-1(config)#sccp 
    
    !--- Enables SCCP and brings it up administratively.
    
    tvg-3845-1(config)#exit
    

  2. Configure the DSP farm profile for transcoding.

    Note: This requires Cisco IOS Software Release 12.3(8)T or later.

    tvg-3845-1
    tvg-3845-1>enable 
    tvg-3845-1#configure terminal
    tvg-3845-1(config)#voice-card 0
    tvg-3845-1(config-voicecard)#dsp services dspfarm
    
    !--- The dsp services dspfarm command enables DSP farm services for the voice card.
    
    tvg-3845-1(config-voicecard)#exit
    tvg-3845-1(config)#dspfarm profile 111 transcode
    
    !--- The dspfarm profile 111 transcode command enters the 
    !--- DSP farm profile configuration mode
    !--- to define a profile for DSP farm services.  
    !--- For this profile, a transcode profile is created.
    
    tvg-3845-1(config-dspfarm-profile)#description transcode profile 111
    tvg-3845-1(config-dspfarm-profile)#codec ?
      g711alaw      G.711 A Law 64000 bps
      g711ulaw      G.711 u Law 64000 bps
      g729abr8      G.729ab 8000 bps
      g729ar8       G.729a 8000 bps
      g729br8       G.729b 8000 bps
      g729r8        G.729 8000 bps
      pass-through  Stream Pass Through
    
    !--- Specifies the codecs supported by a DSP farm profile.
    
    tvg-3845-1(config-dspfarm-profile)#maximum sessions 20
    
    !--- Specifies the maximum number of sessions that are 
    !--- supported by the profile.
    !--- Number is determined by the available registered 
    !--- DSP resources. The default is 0.
    !--- Note: The hardware and software keywords apply 
    !--- only to MTP profiles.
    
    tvg-3845-1(config-dspfarm-profile)#associate application sccp
    
    !--- The associate application sccp command associates the SCCP protocol 
    !--- to the DSP farm profile.
    
    tvg-3845-1(config-dspfarm-profile)#no shutdown
    
    !--- Enables the profile, allocates
    !--- DSP farm resources, and associates the application.
    
    tvg-3845-1(config-dspfarm-profile)#exit
    tvg-38450-1(config)#gateway 
    
    !--- Enters gateway configuration mode.
    
    tvg-38450-1(config-gateway)#timer receive-rtp 600 
    
    !--- Sets the Real-Time Transport 
    !--- Protocol (RTP) timeout interval to clear hanging connections.
    !--- Seconds range is 180 to 1800. The default is 1200. 
    
    tvg-38450-1(config-gateway)#exit
    

  3. Create a Cisco CallManager group and associate the DSP farm transcoding profile.

    Note: This procedure requires Cisco IOS Software Release 12.3(8)T or later.

    tvg-3845-1
    
    !--- Perform this procedure to define a 
    !--- Cisco Unified CallManager 
    !--- group and to associate the transcoding DSP farm profile with 
    !--- the Cisco Unified CallManager group.
    
    tvg-3845-1>enable 
    tvg-3845-1#configure terminal
    tvg-3845-1(config)#sccp ccm group 111
    
    !--- The sccp ccm group 111 command creates a Cisco Unified CallManager group and 
    !--- enters SCCP Cisco Unified CallManager configuration mode.
    
    tvg-3845-1(config-sccp-ccm)#associate ccm 18 priority 1
    tvg-3845-1(config-sccp-ccm)#associate ccm 5 priority 2
    tvg-3845-1(config-sccp-ccm)#associate ccm 4 priority 3
    tvg-3845-1(config-sccp-ccm)#associate ccm 11 priority 4
    
    !--- Adds a Cisco Unified CallManager server to the Cisco 
    !--- Unified CallManager group and establishes its priority within the group.
    
    tvg-3845-1(config-sccp-ccm)#associate profile 111 register tvg1txcode
    
    !--- Associates a DSP farm profile to the Cisco Unified CallManager group.
    
    !--- The device-name must match the device name configured in Cisco Unified CallManager. 
    !--- Otherwise, the profile is not registered to Cisco Unified CallManager.
    
    !--- Repeat this step for each DSP farm profile that you want to register with 
    !--- this Cisco Unified CallManager group. 
    
    tvg-3845-1(config-sccp-ccm)#bind interface loopback 1
    
    !--- Binds an interface to the Cisco Unified CallManager group.
    
    
    tvg-3845-1(config-sccp-ccm)#description tvg1 transcoding
    tvg-3845-1(config-sccp-ccm)end
    

  4. Configure the DSP farm profile for conferencing.

    tvg-3845-1
    tvg-3845-1>enable 
    tvg-3845-1#configure terminal
    tvg-3845-1(config)#voice-card 0
    tvg-3845-1(config-voicecard)#dsp services dspfarm
    
    !--- The dsp services dspfarm command enables DSP farm services for the voice card.
    
    tvg-3845-1(config-voicecard)#exit
    tvg-3845-1(config)#dspfarm profile 999 conference
    
    !--- The dspfarm profile 999 conference command enters DSP 
    !--- farm profile configuration mode
    !--- to define a profile for DSP farm services.  
    !--- For this profile, a transcode profile is created.
    
    tvg-3845-1(config-dspfarm-profile)#description conference profile 999
    tvg-3845-1(config-dspfarm-profile)#codec ?
      g711alaw      G.711 A Law 64000 bps
      g711ulaw      G.711 u Law 64000 bps
      g729abr8      G.729ab 8000 bps
      g729ar8       G.729a 8000 bps
      g729br8       G.729b 8000 bps
      g729r8        G.729 8000 bps
      pass-through  Stream Pass Through
    
    !--- Specifies the codecs supported by a DSP farm profile.
    
    tvg-3845-1(config-dspfarm-profile)#maximum sessions 4
    
    !--- Specifies the maximum number of sessions that are supported by the profile.
    !--- Number is determined by the available registered DSP resources. 
    !--- The default is 0.
    !--- Note: The hardware and software keywords apply only to MTP profiles.
    
    tvg-3845-1(config-dspfarm-profile)#associate application sccp
    
    !--- The associate application sccp command associates 
    !--- the SCCP protocol to the DSP farm profile.
    
    tvg-3845-1(config-dspfarm-profile)#no shutdown
    
    
    !--- Enables the profile, allocates
    !--- DSP farm resources, and associates the application.
    
    tvg-3845-1(config-dspfarm-profile)#exit
    tvg-38450-1(config)#gateway 
    
    !--- Enters gateway configuration mode.
    
    tvg-38450-1(config-gateway)#timer receive-rtp 600 
    
    !--- Sets the Real-Time Transport 
    !--- Protocol (RTP) timeout interval to clear hanging connections.
    !--- Seconds range is 180 to 1800. The default is 1200. 
    
    tvg-38450-1(config-gateway)#exit
    

  5. Create Cisco CallManager group and assign the DSP farm conferencing profile.

    tvg-3845-1
    
    !--- Perform this procedure to define a Cisco Unified CallManager 
    !--- group and to associate the conferencing DSP farm profile 
    !--- with the Cisco Unified CallManager group.
    
    tvg-3845-1>enable 
    tvg-3845-1#configure terminal
    tvg-3845-1(config)#sccp ccm group 999
    
    !--- The sccp ccm group 999 command creates a Cisco Unified CallManager group and 
    !--- enters SCCP Cisco Unified CallManager configuration mode.
    
    tvg-3845-1(config-sccp-ccm)#associate ccm 18 priority 1
    tvg-3845-1(config-sccp-ccm)#associate ccm 5 priority 2
    tvg-3845-1(config-sccp-ccm)#associate ccm 4 priority 3
    tvg-3845-1(config-sccp-ccm)#associate ccm 11 priority 4
    
    !--- Adds a Cisco Unified CallManager server to the Cisco 
    !--- Unified CallManager group and establishes its priority within the group.
    
    tvg-3845-1(config-sccp-ccm)#associate profile 999 register tvg1conf
    
    !--- Associates a DSP farm profile to the Cisco Unified CallManager group.
    
    !--- The device-name must match the device name configured in Cisco Unified CallManager. 
    !--- Otherwise, the profile is not registered to Cisco Unified CallManager.
    
    !--- Repeat this step for each DSP farm profile that you want to register with 
    !--- this Cisco Unified CallManager group. 
    
    tvg-3845-1(config-sccp-ccm)#bind interface loopback 1
    
    !--- Binds an interface to the Cisco Unified CallManager group.
    
    tvg-3845-1(config-sccp-ccm)#description tvg1 conferencing
    tvg-3845-1(config-sccp-ccm)end
    

  6. Modify the default settings for SCCP connection to CallMananger (optional).

  7. Configure a Media Resource in Cisco CallManager for Transcoding. In order to do this, add a Transcoder and register the transcoding profile that was built in Cisco IOS as a Cisco IOS Enhanced Media Termination Point in Cisco CallManager.

    1. Add a Transcoder to Cisco CallManager and select the Transcoder Type that is appropriate to your DSP resources. Typically, Transcoder Type Cisco IOS Enhanced Media Termination Point depends on the type of DSPs that are registered (for example, C549s versus C5510s).

      trans-conf-iosgw-ccm-2.gif

    2. Configure and insert the Transcoder profile in Cisco CallManager to register with the profile that was created in Cisco IOS. The Device Name is the same as the profile name that was created in Cisco IOS.

      trans-conf-iosgw-ccm-3.gif

    3. Reset the Transcoder in Cisco CallManager to activate registration.

      Note: If the Transcoder does not register after a reset, you might need to delete and recreate the profile in Cisco CallManager. You can also bounce the sccp and dspfarm registration in IOS in order to resolve this issue. Try these commands:

      tvg-3845-1(config)#no dspfarm tvg-3845-1(config)#no sccp tvg-3845-1(config)#dspfarm tvg-3845-1(config)#sccp

      trans-conf-iosgw-ccm-4.gif

  8. Configure a media resource in Cisco CallManager for Conferencing.

    1. Add a conference bridge to Cisco CallManager through Feature > Media Resource > Conference Bridge.

      trans-conf-iosgw-ccm-5.gif

    2. Click Add a New Conference Bridge.

      trans-conf-iosgw-ccm-6.gif

    3. Configure and insert the conference bridge profile in Cisco CallManager to register with the profile that was created in Cisco IOS. The Device Name is the same as the profile name that was created in Cisco IOS.

      Typically, the Conference Bridge Type Cisco IOS Enhanced Conference Bridge depends on the type of DSPs that are registered (for example, C549s versus C5510s).

      trans-conf-iosgw-ccm-7.gif

    4. Reset the conference bridge for the profile to register with Cisco CallManager.

      Note: If the conference bridge does not register after a reset, you might need to delete and recreate the profile in Cisco CallManager. You can also bounce the sccp and dspfarm registration in IOS in order to resolve this issue. Try these commands:

      tvg-3845-1(config)#no dspfarm tvg-3845-1(config)#no sccp tvg-3845-1(config)#dspfarm tvg-3845-1(config)#sccp

      trans-conf-iosgw-ccm-8.gif

  9. Create and assign a Media Resource Group in Cisco CallManager.

  10. Create and assign a Media Resource Group List in Cisco CallManager.

  11. Verify the DSP resources configuration.

A configuration example for how to set up Media Resource Groups and Media Resource Group Lists in Cisco CallManager is located in the Media Resources Interactive Voice Network Configuration Example.

Note: You must determine the number of PVDM2s or network modules that are required to support your conferencing and transcoding services and install the modules on your router. For more information on this requirement, refer to Determining DSP Resource Requirements.

Note: This voice gateway router configuration uses a loopback address as a virtual interface for H.323 signaling.

Verify

This section describes how to verify conferencing, transcoding, and MTP services with the use of these commands:

The Output Interpreter Tool (registered customers only) (OIT) supports certain show commands. Use the OIT to view an analysis of show command output.

  • show running-config—Use the show running-config command to display the configuration of the MTP profile.

    tvg-3845-1
    tvg-3845-1#show running-config 
    ! 
    voice-card 0
     no dspfarm
     dsp services dspfarm
    !
    interface Loopback1
     description VoIP Loopback Interface
     ip address 172.31.255.1 255.255.255.255
     ip pim sparse-dense-mode
     h323-gateway voip interface
     h323-gateway voip bind srcaddr 172.31.255.1
    !
    sccp local Loopback1
    sccp ccm 192.168.252.18 identifier 18 priority 1 version 4.1
    sccp ccm 192.168.198.5 identifier 5 priority 2 version 4.1
    sccp ccm 192.168.198.4 identifier 4 priority 3 version 4.1
    sccp ccm 192.168.252.11 identifier 11 priority 4 version 4.1
    sccp
    !
    sccp ccm group 999
     description tvg1 conferencing
     bind interface Loopback1
     associate ccm 18 priority 1
     associate ccm 5 priority 2
     associate ccm 4 priority 3
     associate ccm 11 priority 4
     associate profile 999 register tvg1conf
    !
    sccp ccm group 111
     description tvg1 transcoding
     associate ccm 18 priority 1
     associate ccm 5 priority 2
     associate ccm 4 priority 3
     associate ccm 11 priority 4
     associate profile 111 register tvg1txcode
    !
    dspfarm profile 111 transcode
     description transcode profile 111
     codec g711ulaw
     codec g711alaw
     codec g729ar8
     codec g729abr8
     codec gsmfr
     codec g729r8
     maximum sessions 20
     associate application SCCP
    !
    dspfarm profile 999 conference
     description dspfarm profile 999 conferencing
     codec g711ulaw
     codec g711alaw
     codec g729ar8
     codec g729abr8
     codec g729r8
     codec g729br8
     maximum sessions 4
     associate application SCCP
     !
     end

  • show sccp ccm group [group-number]—Use this command to verify the configuration of the Cisco Unified CallManager group.

    tvg-3845-1
    tvg-3845-1#show sccp ccm group 
    CCM Group Identifier: 999
     Description: tvg1
     Binded Interface: Loopback1, IP Address: 172.31.255.1
     Associated CCM Id: 18, Priority in this CCM Group: 1
     Associated CCM Id: 5, Priority in this CCM Group: 2
     Associated CCM Id: 4, Priority in this CCM Group: 3
     Associated CCM Id: 11, Priority in this CCM Group: 4
     Associated Profile: 999, Registration Name: tvg1conf
     Registration Retries: 3, Registration Timeout: 10 sec
     Keepalive Retries: 3, Keepalive Timeout: 30 sec
     CCM Connect Retries: 3, CCM Connect Interval: 10 sec
     Switchover Method: GRACEFUL, Switchback Method: GRACEFUL_GUARD
     Switchback Interval: 10 sec, Switchback Timeout: 7200 sec
     Signaling DSCP value: cs3, Audio DSCP value: ef
    
    CCM Group Identifier: 111
     Description: tvg1 transcoding
     Binded Interface: NONE, IP Address: NONE
     Associated CCM Id: 18, Priority in this CCM Group: 1
     Associated CCM Id: 5, Priority in this CCM Group: 2
     Associated CCM Id: 4, Priority in this CCM Group: 3
     Associated CCM Id: 11, Priority in this CCM Group: 4
     Associated Profile: 111, Registration Name: tvg1txcode
     Registration Retries: 3, Registration Timeout: 10 sec
     Keepalive Retries: 3, Keepalive Timeout: 30 sec
     CCM Connect Retries: 3, CCM Connect Interval: 10 sec
     Switchover Method: GRACEFUL, Switchback Method: GRACEFUL_GUARD
     Switchback Interval: 10 sec, Switchback Timeout: 7200 sec
     Signaling DSCP value: cs3, Audio DSCP value: ef

  • show dspfarm profile [profile-number]—Use this command to verify the configured DSP farm profiles.

    tvg-3845-1
    tvg1-3845#show dspfarm profile 
    Dspfarm Profile Configuration
    
     Profile ID = 111, Service = TRANSCODING, Resource ID = 1  
     Profile Description : transcode profile 111 
     Profile Admin State : UP 
     Profile Operation State : ACTIVE 
     Application : SCCP   Status : ASSOCIATED 
     Resource Provider : FLEX_DSPRM   Status : UP 
     Number of Resource Configured : 20 
     Number of Resource Available : 20
     Codec Configuration 
     Codec : g711ulaw, Maximum Packetization Period : 30 
     Codec : g729r8, Maximum Packetization Period : 60
    Dspfarm Profile Configuration
    
     Profile ID = 999, Service = CONFERENCING, Resource ID = 2  
     Profile Description : dspfarm profile 118 conferencing 
     Profile Admin State : UP 
     Profile Operation State : ACTIVE 
     Application : SCCP   Status : ASSOCIATED 
     Resource Provider : FLEX_DSPRM   Status : UP 
     Number of Resource Configured : 4 
     Number of Resource Available : 4
     Codec Configuration 
     Codec : g711ulaw, Maximum Packetization Period : 30 , Transcoder: Not Required 
     Codec : g729r8, Maximum Packetization Period : 60 , Transcoder: Not Required

  • show dspfarm all—Use this command to verify the status of the DSP farm.

    tvg-3845-1
    tvg1-3845#show dspfarm all 
    Dspfarm Profile Configuration
    
     Profile ID = 111, Service = TRANSCODING, Resource ID = 1  
     Profile Description : transcode profile 111 
     Profile Admin State : UP 
     Profile Operation State : ACTIVE 
     Application : SCCP   Status : ASSOCIATED 
     Resource Provider : FLEX_DSPRM   Status : UP 
     Number of Resource Configured : 20 
     Number of Resource Available : 20
     Codec Configuration 
     Codec : g711ulaw, Maximum Packetization Period : 30 
     Codec : g729r8, Maximum Packetization Period : 60
    Dspfarm Profile Configuration
    
     Profile ID = 999, Service = CONFERENCING, Resource ID = 2  
     Profile Description : dspfarm profile 999 conferencing 
     Profile Admin State : UP 
     Profile Operation State : ACTIVE 
     Application : SCCP   Status : ASSOCIATED 
     Resource Provider : FLEX_DSPRM   Status : UP 
     Number of Resource Configured : 4 
     Number of Resource Available : 4
     Codec Configuration 
     Codec : g711ulaw, Maximum Packetization Period : 30 , Transcoder: Not Required 
     Codec : g729r8, Maximum Packetization Period : 60 , Transcoder: Not Required
    
    
    SLOT DSP VERSION  STATUS CHNL USE   TYPE   RSC_ID BRIDGE_ID PKTS_TXED PKTS_RXED
    
    0    1   9.2.2    UP     N/A  FREE  xcode  1      -         -         -        
    0    1   9.2.2    UP     N/A  FREE  xcode  1      -         -         -        
    0    1   9.2.2    UP     N/A  FREE  xcode  1      -         -         -        
    0    2   9.2.2    UP     N/A  FREE  xcode  1      -         -         -        
    0    2   9.2.2    UP     N/A  FREE  xcode  1      -         -         -        
    0    2   9.2.2    UP     N/A  FREE  xcode  1      -         -         -        
    0    2   9.2.2    UP     N/A  FREE  xcode  1      -         -         -        
    0    2   9.2.2    UP     N/A  FREE  xcode  1      -         -         -        
    0    2   9.2.2    UP     N/A  FREE  xcode  1      -         -         -        
    0    3   9.2.2    UP     N/A  FREE  xcode  1      -         -         -        
    0    3   9.2.2    UP     N/A  FREE  xcode  1      -         -         -        
    0    3   9.2.2    UP     N/A  FREE  xcode  1      -         -         -        
    0    3   9.2.2    UP     N/A  FREE  xcode  1      -         -         -        
    0    3   9.2.2    UP     N/A  FREE  xcode  1      -         -         -        
    0    3   9.2.2    UP     N/A  FREE  xcode  1      -         -         -        
    0    4   9.2.2    UP     N/A  FREE  xcode  1      -         -         -        
    0    4   9.2.2    UP     N/A  FREE  xcode  1      -         -         -        
    0    4   9.2.2    UP     N/A  FREE  xcode  1      -         -         -        
    0    4   9.2.2    UP     N/A  FREE  xcode  1      -         -         -        
    0    4   9.2.2    UP     N/A  FREE  xcode  1      -         -         -        
    0    7   1.1.1    UP     N/A  FREE  conf   2      -         -         -        
    0    7   1.1.1    UP     N/A  FREE  conf   2      -         -         -        
    0    8   1.1.1    UP     N/A  FREE  conf   2      -         -         -        
    0    8   1.1.1    UP     N/A  FREE  conf   2      -         -         -        
    
    Total number of DSPFARM DSP channel(s) 24

  • show sccp—Use this command to verify that the DSP farm is registered.

    tvg-3845-1
    tvg1-3845#show sccp 
    SCCP Admin State: UP
    Gateway IP Address: 172.31.255.1, Port Number: 2000
    IP Precedence: 5
    User Masked Codec list: None
    Call Manager: 192.168.198.4, Port Number: 2000
    		Priority: 3, Version: 4.1, Identifier: 4
    Call Manager: 192.168.198.5, Port Number: 2000
    		Priority: 2, Version: 4.1, Identifier: 5
    Call Manager: 192.168.252.11, Port Number: 2000
    		Priority: 4, Version: 4.1, Identifier: 11
    Call Manager: 192.168.252.18, Port Number: 2000
    		Priority: 1, Version: 4.1, Identifier: 18
    
    Conferencing Oper State: ACTIVE - Cause Code: NONE
    Active Call Manager: 192.168.252.18, Port Number: 2000
    TCP Link Status: CONNECTED, Profile Identifier: 999
    Reported Max Streams: 32, Reported Max OOS Streams: 0
    Supported Codec: g711ulaw, Maximum Packetization Period: 30
    Supported Codec: g729r8, Maximum Packetization Period: 60
    Supported Codec: rfc2833 dtmf, Maximum Packetization Period: 30
    Supported Codec: rfc2833 pass-thru, Maximum Packetization Period: 30
    Supported Codec: inband-dtmf to rfc2833 conversion, 
    Maximum Packetization Period: 30
    
    Transcoding Oper State: ACTIVE - Cause Code: NONE
    Active Call Manager: 192.168.252.18, Port Number: 2000
    TCP Link Status: CONNECTED, Profile Identifier: 111
    Reported Max Streams: 40, Reported Max OOS Streams: 0
    Supported Codec: g711ulaw, Maximum Packetization Period: 30
    Supported Codec: g729r8, Maximum Packetization Period: 60
    Supported Codec: rfc2833 dtmf, Maximum Packetization Period: 30
    Supported Codec: rfc2833 pass-thru, Maximum Packetization Period: 30
    Supported Codec: inband-dtmf to rfc2833 conversion, 
    Maximum Packetization Period: 30

  • show sccp connections—Use this command to verify the active SCCP connections.

    tvg-3845-1
    tvg1-3845#show sccp connections 
    
    Total number of active session(s) 0, and connection(s) 0

  • show media resource status—Use this command to verify the current media resource status.

    tvg-3845-1
    tvg1-3845#show media resource status 
     Resource Providers:
    
     Resource  Provider ID :: FLEX_DSPRM Status :: REGISTERED
     Service Profiles
     MTP :: 
     TRANSCODING :: 111 
     CONFERENCING :: 999 
     Applications : 
     Application ID : SCCP, Status : REGISTERED

Troubleshoot

Refer to Configuring Enhanced Conferencing and Transcoding for Voice Gateway Routers for more troubleshooting information.

Related Information

Updated: May 30, 2007
Document ID: 91863