Support for Pass-Through of Unsupported Content Types in SIP INFO Messages

This feature allows the CUBE to pass-through all unsupported content types in a SIP INFO message.

Feature Information

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.

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Feature Name

Releases

Feature Information

Support for pass-through of unsupported content types in SIP INFO messages

Cisco IOS 15.5(3)M

Cisco IOS XE 3.16S

This feature allows CUBE to pass-through SIP INFO methods or request message types with unsupported content types. Media negotiation and media exchange is completely end-to-end.

Configure SIP INFO Message with Unsupported Content Type

You must enable the pass-thru content unsupp command to pass-through all unsupported content types in a SIP INFO message. There is no additional configuration task required for this feature.

Information About Pass-Through of Unsupported Content Types in SIP INFO Messages

The Support for Pass-Through of Unsupported Content Types in SIP INFO Messages feature allows the CUBE to pass-through all unsupported content types in a SIP INFO message.

Upon receipt of a SIP INFO message with unsupported content type, CUBE triggers a SIP INFO message on the outgoing peer call leg. The response received for this SIP INFO message is triggered on the incoming peer call leg and information flows end-to-end. Prior to releases 15.5(3)M and 3.16S, on reception of SIP INFO message with unsupported content type, CUBE will respond with the "415 Unsupported Media Type" error response.

Supported content types include the following:

  • application/sdp

  • application/qsig

  • application/media-control+xml

  • application/x-q931

  • application/gtd

  • application/simple-message-summary

  • application/kpml-response+xml

  • application/dtmf-relay

  • application/broadsoft

  • message/sipfrag

  • audio/telephone-event

  • multpart/mixed

  • application/x-cisco-record+json