Cisco Unified Border Element (Enterprise) SIP Support Configuration Guide, Cisco IOS XE Release 3S
Configuring Call Routing logic on Cisco UBE using the History-info Header
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Configuring Call Routing logic on Cisco UBE using the History-info Header

Configuring Call Routing logic on Cisco UBE using the History-info Header

The history-info header has the call or dialog history information. The receiving application uses the history-info header information to determine how and why the call has reached it. SIP IOS GW does not utilize this information in History-Info header. The information stored in the History-Info headers can be used to bypass the dial-peers that were already tried during the course of a call, ensuring that the call is not being redirected again to the same target. The called-numbers and host portion of request URI in History-Info headers will be compared with the matching dial-peers, if incase the comparison succeeds, then those dial-peers will be bypassed.

This section contains the following procedures:

Finding Feature Information

Your software release may not support all the features documented in this module. For the latest caveats and feature information, see Bug Search Tool and the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the feature information table at the end of this module.

Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/​go/​cfn. An account on Cisco.com is not required.

Configuring Call Routing Logic on Cisco UBE using the History-info Header Globally

Perform this task to configure call routing on history-info header at a global level in SIP configuration (conf-serv-sip) mode.

SUMMARY STEPS

    1.    enable

    2.    configure terminal

    3.    voice service voip

    4.    sip

    5.    call-route history-info

    6.    exit


DETAILED STEPS
     Command or ActionPurpose
    Step 1 enable


    Example:
    Router> enable
     

    Enters privileged EXEC mode, or other security level set by a system administrator.

    • Enter your password if prompted.
     
    Step 2 configure terminal


    Example:
    Router# configure terminal
     

    Enters global configuration mode.

     
    Step 3 voice service voip


    Example:
    Router(config)# voice service voip
     

    Enters voice service VoIP configuration mode.

     
    Step 4 sip


    Example:
    Router(conf-voi-serv)# sip
     

    Enters SIP configuration mode.

     
    Step 5 call-route history-info


    Example:
    Router(conf-serv-sip)# call-route history-info
     

    Configures call-route history-info header support globally.

     
    Step 6 exit


    Example:
    Router(conf-serv-sip)# exit
     

    Exits the current mode.

     

    Configuring all Routing Logic on Cisco UBE using the History-info Header at the Dial-Peer Level

    Perform this task to configure call routing on history-info header support at the dial-peer level, in dial peer voice configuration (config-dial-peer) mode.

    SUMMARY STEPS

      1.    enable

      2.    configure terminal

      3.    dial-peer voice tag voip

      4.    voice-class sip call-route history-info

      5.    exit


    DETAILED STEPS
       Command or ActionPurpose
      Step 1 enable


      Example:
      Router> enable
       

      Enters privileged EXEC mode, or other security level set by a system administrator.

      • Enter your password if prompted.
       
      Step 2 configure terminal


      Example:
      Router# configure terminal
       

      Enters global configuration mode.

       
      Step 3 dial-peer voice tag voip


      Example:
      Router(config)# dial-peer voice 2 voip
       

      Enters dial peer VoIP configuration mode.

       
      Step 4 voice-class sip call-route history-info

      Example:
      Router(config-dial-peer)# voice-class sip call-route history-info
       

      Configures call-route history-info header support for a dial peer.

       
      Step 5 exit


      Example:
      Router(config-dial-peer)# exit
       

      Exits the current mode.

       

      Feature Information for Call Routing logic on Cisco UBE using the History-info Header

      The following table provides release information about the feature or features described in this module. This table lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature.

      Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/​go/​cfn. An account on Cisco.com is not required.

      Feature History table for the ISR

      Table 1 Feature Information for Call Routing logic on Cisco UBE using the History-info Header

      Feature Name

      Releases

      Feature Information

      Call routing logic on the Cisco Unified Border Element based on the information embedded in the history-info header.

      15.1(2)T

      The call-routing logic on the Cisco UBE is enhanced by utilizing the information embedded in the history-info header of SIP requests that are retargeted or routed across domains. This is done by utilizing the information in the history-info header to bypass retargeting dial-peer entries that are indicated in the history-info header.

      The following command was introduced or modified: call-route history-info, voice clas sip call-route history-info.

      Feature History table for the ASR

      Table 2 Feature Information for Call Routing logic on Cisco UBE using the History-info Header

      Feature Name

      Releases

      Feature Information

      Call routing logic on the Cisco Unified Border Element based on the information embedded in the history-info header.

      Cisco IOS XE Release 3.3S

      The call-routing logic on the Cisco UBE is enhanced by utilizing the information embedded in the history-info header of SIP requests that are retargeted or routed across domains. This is done by utilizing the information in the history-info header to bypass retargeting dial-peer entries that are indicated in the history-info header.

      The following command was introduced or modified: call-route history-info, voice clas sip call-route history-info.