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Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide, Cisco IOS XE Everest 16.6

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Book Title

Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide, Cisco IOS XE Everest 16.6

Chapter Title

Configuring the Cisco DSP SPA for the ASR 1000 Series Aggregation Services Routers

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Updated:
February 24, 2018

Chapter: Configuring the Cisco DSP SPA for the ASR 1000 Series Aggregation Services Routers

Configuring the Cisco DSP SPA for the ASR 1000 Series Aggregation Services Routers

This chapter provides information about configuring the DSP SPA for ASR 1000 Series on the Cisco ASR 1000 Series Aggregation Services Routers, also referred to in this document as the SPA-DSP.

Voice Transcoding Overview

This section provides a high-level overview of how the voice transcoding functionality is configured. After you insert the SPA-DSP in the SIP, the SPA-DSP is activated, and you can identify the status of the SPA-DSP, by executing the show platform command. If the SPA-DSP is operational and working fine, the show platform command output will display OK in the Status for SPA-DSP. Before you configure the voice transcoding functionality, you must enable the SPA-DSP. After you enable the voice card and set the SPA-DSP in DSP farm mode using the dsp services dspfarm command, you can create the DSP-farm service profiles.

DSP Farm Profiles

DSP-farm profiles are created to allocate DSP-farm resources. DSP-farm profiles can only be created after you set the DSP SPA in DSP farm mode. Under the profile, you select the service type (transcode), associate an application (SBC), and specify service-specific parameters such as codecs and maximum number of sessions. A DSP-farm profile allows you to group DSP resources based on the service type. Applications associated with the profile, such as SBC, can use the resources allocated under the profile. You can configure multiple profiles for the same service. The profile ID and service type uniquely identify a profile, allowing the profile to uniquely map to a SBC application. After creating the profile, you need to attach the profile to an application and enable the DSP farm profile.

The SPA-DSP and SBC application work in conjunction to provide voice transcoding and transrating functionalities. After the DSP-farm profiles are created, each profile is uniquely attached to a unique SBC identifier. The SBC configuration of Call-admission-control (CAC) and DTMF internetworking has been explained in the Cisco Unified Border Element (SP Edition) Configuration Guide: Unified Model .

Configuration Tasks

Perform this procedure to enable a SPA-DSP and define a DSP farm profile. Additionally, you can enable or disable local voice activity detection (vad) irrespective of external configuration. For information about SPA-DSP hardware details, managing your system images and configuration files, refer to the following:

Prerequisites

Complete the following prerequisites to successfully enable the SPA-DSP and to set DSP SPA in DSP Farm mode on Cisco ASR 1000 Series Router:

  • Requires Cisco IOS XE Software Release 3.2 or a later release installed on Cisco ASR 1000 Series Router
  • DSP SPA installed and in operational state.

Configuring a DSP Farm Profile

Execute the following steps to enable the SPA-DSP and set DSP SPA in DSP farm mode.

SUMMARY STEPS

    1.    enable

    2.    configure terminal

    3.    voice-card slot/subslot

    4.    dsp services dspfarm

    5.    exit

    6.    dspfarm profile profile-identifier {transcode [universal]}

    7.    description text

    8.    codec codec-type

    9.    maximum sessions number

    10.    associate application sbc

    11.    no shutdown

    12.    exit


DETAILED STEPS
     Command or ActionPurpose
    Step 1enable


    Example: 
    Router> enable
     

    Enables privileged EXEC mode.

    • Enter your password if prompted.
     
    Step 2configure terminal


    Example: 
    Router# configure terminal
     

    Enters global configuration mode.

     
    Step 3 voice-card slot/subslot


    Example: 
    Router(config)# voice-card 1/1
     

    Enters voice card configuration mode for the SPA-DSP on which you want to enable DSP-farm services.

     
    Step 4 dsp services dspfarm


    Example: 
    Router(config-voicecard)# dsp services dspfarm
     

    Enables DSP-farm services for the SPA-DSP voice card.

     
    Step 5exit


    Example: 
    Router(config-voicecard)# exit
     

    Exits voice card configuration mode.

     
    Step 6 dspfarm profile profile-identifier {transcode [universal]}


    Example: 
    Router(config)# dspfarm profile 1 transcode universal
     

    Enters DSP farm profile configuration mode to define a profile for DSP farm services.

    Note    The profile-identifier and service type uniquely identify a profile. If the service type and profile-identifier pair are not unique, you are prompted to choose a different profile-identifier .
     
    Step 7 description text


    Example: 
    Router(config-dspfarm-profile)# description low2mediumcomp
     

    (Optional) Includes a specific description about the Cisco DSP farm profile.

     
    Step 8 codec codec-type


    Example: 
    Router(config-dspfarm-profile)# codec g723r63


    Example: 
    Router(config-dspfarm-profile)# codec g723r53
     

    Specifies the codecs supported by a DSP farm profile.

    Note    By default, the codecs g711ulaw, g711alaw, g729ar8, and g729abr8 are created for each DSP farm profile.
     
    Step 9 maximum sessions number


    Example: 
    

		   

    Example:
			 
    Router(config-dspfarm-profile)# maximum sessions 4
    

		   
          		  
			 
     Specifies the maximum number of sessions that are supported by
				the profile.
			 
    
 
			 
    •  
				  number —Range is determined by the available registered
				  DSP resources. Default is 0.
				
      • 

    
 
			 
    Note   
                
               By default, the maximum sessions are counted from the subslot
				where the SPA-DSP is available. If there are more than one SPA-DSPs and the
				maximum sessions exceed the session limit per SPA-DSP, the remaining sessions
				are managed by the second SPA-DSP.
			 
    
 
		   
      
    

    Step 10 
			 associate 
				application 
				sbc
		  
     

    Example:
			 
    Router(config-dspfarm-profile)# associate application sbc
    

		   
          		  
			 
     Associates the SBC application to the DSP farm profile.
			 
    
 
		   
      
    

    Step 11no 
				shutdown 
			 
		  
     

    Example:
			 
    Router(config-dspfarm-profile)# no shutdown
    

		   
          		  
			 
     Enables the profile, allocates DSP farm resources, and associates
				the application.
			 
    
 
		   
      
    

    Step 12exit
		  
     

    Example:
			 
    Router(config-dspfarm-profile)# exit
    

		   
          		  
			 
     Exits DSP farm profile configuration mode. 
			 
    
 
		   
      
    

    

    

    What to Do Next
    

    
For more information related to associating an SBC to a DSP farm profile, see the “Cisco Unified Border Element (SP Edition) - SPA DSP Services” chapter in “Cisco Unified Border Element (SP Edition) Configuration Guide: Unified Model”:
    

    
http:/​/​www.cisco.com/​en/​US/​docs/​routers/​asr1000/​configuration/​guide/​sbcu/​sbc_​spadsp.html

    

    
For SBC configuration information (Call-admission-control [CAC] and DTMF internetworking) too, see the 
Cisco Unified Border Element (SP Edition) Configuration Guide: Unified Model
.
    

    

    

    

    Enabling or Disabling Voice Activity Detection (VAD)
    

    

    
Execute the following steps to enable or disable local VAD settings irrespective of external VAD settings.
    


    
SUMMARY STEPS
      1.   
      enable
      

      2.   
      configure terminal
      

      3.   
      
dspfarm profile profile-identifier 
      

      4.   
      vad on override
      

      5.   
      do show running-config
      


    DETAILED STEPS
       Command or ActionPurpose
      Step 1enable
       

      Example:
      Router> enable
      
 
            		 

      
Enables privileged EXEC mode. 
      


      • 
Enter your password if prompted.
        • 

      

 
      
      

      Step 2configure terminal
       

      Example:
      Router# configure terminal
      
 
            		 

      
Enters global configuration mode.
      

 
      
      

      Step 3
dspfarm profile profile-identifier 
       

      Example:
      Router(config)# dspfarm profile 1 
      
 
            		 

      
Enters DSP farm profile configuration mode to enable or disable voice activity detection settings (VAD).
      

 
      
      

      Step 4vad on override
       

      Example:
      Router(config-dspfarm-profile)# vad on override
      
 
            		 

      
Enables the voice activity detection (VAD) feature locally and overrides the external VAD settings.
      

 
      
      

      Step 5do show running-config
       

      Example:
      Router(config-dspfarm-profile)# do show running-config 
      
 

      Example:
      
 

      Example:
      !!!
      
 

      Example:
      dspfarm profile 1 transcode
      
 

      Example:
       codec g711ulaw
      
 

      Example:
       codec g711alaw
      
 

      Example:
       codec g729ar8
      
 

      Example:
       codec g729abr8
      
 

      Example:
       maximum sessions 588
      
 

      Example:
       associate application SBC
      
 

      Example:
       vad on override
      
 

      Example:
      !
      
 
            		 

      
Displays the local VAD settings which will override the external VAD settings for the current DSP farm profile. 
      

 
      
      

      

      

      

      

      Change in Command Output During Call Recovery
      

      
In Cisco IOS XE Release 3.3.0s, the show voice dsp group all command output that is displayed when a SPA-DSP undergoes call recovery is enhanced. The command output is seen only during the call recovery process, which lasts for a few milliseconds. The additional information that is included in the command output pertains to: HA State : DSP_HA_STATE_PENDING1. The additional information is displayed when a SPA-DSP undergoes call recovery.
      

      
The following sample output shows how HA State: DSP_HA_STATE_PENDING1 is added. The additional command output is seen only in Cisco IOS XE Release 3.3.0S and later releases:
      

      Router# show voice dsp group all
Show DSP group all
 
DSP groups on slot 0 bay 0:
dsp 1:
  State: UP
  HA State : DSP_HA_STATE_PENDING1
  Max signal/voice channel: 43/43
  Max credits: 645
  num_of_sig_chnls_allocated: 43
  Transcoding channels allocated: 43
  Group: FLEX_GROUP_XCODE, complexity: LOW
    Shared credits: 0, reserved credits: 645
    Transcoding channels allocated: 24
    Credits used (rounded-up): 360
      

      

      

      Configuring the RTCP on the SPA-DSP
      

      
This section provides details of the procedure to enable the generation and termination of the RTCP on the SPA-DSP. From the Cisco IOS XE Release 3.4.0S onwards, the SPA-DSP can terminate and generate the RTCP data. 
      

      

      Configuring the RTCP on the SPA-DSP on the Cisco Unified Border Element for the Unified Model
      

      

      
To configure the RTCP on the SPA-DSP on the Cisco Unified Border Element: Unified Model, perform the following steps:
      


      
SUMMARY STEPS
        1.   
      enable
        

        2.   
      configure terminal
        

        3.   
      
sbc sbc-name
        

        4.   
      rtcp-regenerate
        


      DETAILED STEPS
         Command or ActionPurpose
        Step 1enable
         

        Example:
        Router> enable
        
 
              		 

        
Enables the privileged EXEC mode. Enter your password if prompted.
        

 
      
        

        Step 2configure terminal
         

        Example:
        Router# configure terminal
        
 
              		 

        
Enters the global configuration (config) mode.
        

 
      
        

        Step 3
sbc sbc-name 

        Example:
        Router(config)# sbc mySBC
        
 
              		 

        
Creates an SBC service on the Cisco Unified Border Element and enters into the SBC configuration mode.
        

 
      
        

        Step 4rtcp-regenerate
         

        Example:
        Router(config-sbc)# rtcp-regenerate
        
 
              		 

        
Enables the generation and termination of the RTCP packets on the SPA-DSP for the Unified Model.
        

 
      
        

        

        

        

        Configuring the RTCP on the SPA-DSP on the Cisco Unified Border Element for the Distributed Model
        

        

        
To configure the RTCP on the SPA-DSP on the Cisco Unified Border Element for the Distributed Model, perform the following steps:
        


        
SUMMARY STEPS
          1.   
      enable
          

          2.   
      configure terminal
          

          3.   
      
sbc sbc-name dbe
          

          4.   
      rtcp-regenerate
          


        DETAILED STEPS
           Command or ActionPurpose
          Step 1enable
           

          Example:
          Router> enable
          
 
                		 

          
Enables the privileged EXEC mode. Enter your password if prompted.
          

 
      
          

          Step 2configure terminal
           

          Example:
          Router# configure terminal
          
 
                		 

          
Enters the global configuration (config) mode.
          

 
      
          

          Step 3
sbc sbc-name dbe 

          Example:
          Router(config)# sbc mySBC dbe
          
 
                		 

          
Creates the Data Border Element (DBE) service on the SBC and enters the SBC-DBE configuration mode (config-sbc-dbe).
          

 
      
          

          Step 4rtcp-regenerate
           

          Example:
          Router(config-sbc-dbe)# rtcp-regenerate
          
 
                		 

          
Enables the generation and termination of the RTCP packets on the SPA-DSP for the Distributed Model.
          

 
      
          

          

          

          

          

          Configuration Examples for Universal Voice Transcoding
          

          
The following example shows how to configure the RTCP on the SPA-DSP:
          

          Router# config t
Router(config)# sbc mySBC
Router(config-sbc)# rtcp-regenerate
Router(config-sbc)# exit
Router(config)# exit
Router# show running-configuration
.....
rtcp-regenerate
 media-timeout 0
 associate dspfarm profile 1
 activate
!
          

          
The following example shows how to configure the Cisco SPA-DSP installed in a Cisco ASR 1000 Series Router:
          

          Router# config t
Router(config)# voice-card 1/1
Router(config-voice-card)# dsp services dspfarm
Router(config-voice-card)# exit
Router(config)# dspfarm profile 2 transcode universal
Router(config-dspfarm-profile)# description low2mediumcomp
Router(config-dspfarm-profile)# codec g723r63
Router(config-dspfarm-profile)# codec g723r53
Router(config-dspfarm-profile)# maximum sessions 10
Router(config-dspfarm-profile)# associate application sbc
Router(config-dspfarm-profile)# no shutdown
Router(config-dspfarm-profile)# exit
Router(config)# exit
Router#show running-config
voice-card 1/1
 dsp services dspfarm
!
!
.....
dspfarm profile 2 transcode universal
 description low2mediumcomp
 codec g711ulaw
 codec g711alaw
 codec g729ar8
 codec g729abr8
 codec g723r63
 codec g723r53
associate application SBC
!
          

          

          

          Additional References
          

          

          
The following sections provide additional references related to the SPA-DSP and voice transcoding support.
          


          

          Related Documents
          


          

          
Related Topic
          

          		


          
Document Title
          

          		

          
          

          

          
SBC configuration
          

          		


          
Cisco Unified Border Element (SP Edition) Configuration Guide: Unified Model

          

          		

          

          

          
SPA-DSP hardware information
          

          		


          
Cisco ASR 1000 SIP and SPA Hardware Installation Guide
          

          		

          
          

          

          


          

          Standards
          


          

          
Standard
          

          		


          
Title
          

          		

          
          

          

          
None
          

          		


          
— 
          

          		

          
          

          

          


          

          MIBs
          


          

          
MIB
          

          		


          
MIBs Link
          

          		

          
          

          

          
Common MIBs
          


          • 
ENTITY-MIB 
            • 

          • 
ENTITY-SENSOR-MIB 
            • 

          


          
Cisco-Specific Common MIBs
          


          • 
CISCO-DSP-MGMT-MIB
            • 

          • 
OLD-CISCO-CHASSIS-MIB 
            • 

          • 
CISCO-ENTITY-FRU-CONTROL-MIB 
            • 

          • 
CISCO-ENTITY-SENSOR-MIB
            • 

          • 
CISCO-ENTITY-ALARM-MIB
            • 

          • 
CISCO-ENTITY-VENDORTYPE-OID-MIB
            • 

          

          		


          
To locate and download MIBs for selected platforms, Cisco IOS releases, and feature sets, use the Cisco MIB Locator:
          


          
http:/​/​www.cisco.com/​go/​mibs

          


          
For more information about MIB support on a Cisco ASR 1000 Series Routers, refer to the Cisco ASR 1000 Series Aggregation Services Routers MIB Specifications Guide
:
          


          
http:/​/​www.cisco.com/​en/​US/​docs/​routers/​asr1000/​mib/​guide/​asr1kmib.html

          


          

          

          		

          
          

          

          


          

          RFCs
          


          

          
RFC
          

          		


          
Title
          

          		

          
          

          

          
None
          

          		


          
— 
          

          		

          
          

          

          


          

          Technical Assistance
          


          

          
Description
          

          		


          
Link
          

          		

          
          

          

          
The Cisco Technical Support & Documentation website contains thousands of pages of searchable technical content, including links to products, technologies, solutions, technical tips, tools, and technical documentation. Registered Cisco.com users can log in from this page to access even more content.
          

          		


          
http:/​/​www.cisco.com/​cisco/​web/​support/​index.html 

          

          		

          
          

          

          


          

          


          

          


          

          

          



          


           
 
    
          
    
          
        












          
    
          














          
  
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