Extending the SIP Reason Header with Warning Codes draft-hautakorpi-reason-header-for-warnings-00.txt Jani.Hautakorpi@ericsson.com.

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Presentation transcript:

Extending the SIP Reason Header with Warning Codes draft-hautakorpi-reason-header-for-warnings-00.txt Jani.Hautakorpi@ericsson.com

The Main Idea New protocol value for SIP Reason header field: Warning codes from RFC3261. Motivation: Ability to convey richer information about why a SIP request was generated. Example: Reason: SIP-Warning; cause=304; text="Media type not available"

Example Scenario A Controller B INVITE 200 OK ACK INVITE 480 Temp. Unavailable Warning: 399 pc2.example.org “Low battery” ACK BYE Reason: SIP; cause=480; text="Request Terminated" Reason: SIP-Warning; cause=399; text="Low battery" 200 OK

Way Forward One big open issue: Comments? RFC3261 only allows Warning codes that are related to the SDP. Should this be the case also in the future? Comments?