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SIP Telephony Call Flows

SIP Telephony Call Flows. draft-ietf-sip-call-flows-01.txt Alan Johnston, WorldCom Steve Donovan, Robert Sparks, Chris Cunningham, Dean Willis, Jonathan Rosenberg, dynamicsoft Kevin Summers, TTI Henning Schulzrinne, Columbia University. SIP Telephony Call Flows. Contents of Draft

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SIP Telephony Call Flows

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  1. SIP Telephony Call Flows draft-ietf-sip-call-flows-01.txt Alan Johnston, WorldCom Steve Donovan, Robert Sparks, Chris Cunningham, Dean Willis, Jonathan Rosenberg, dynamicsoft Kevin Summers, TTI Henning Schulzrinne, Columbia University draft-ietf-sip-call-flows-00.txt

  2. SIP Telephony Call Flows • Contents of Draft • Call flows of Registration, IP to IP calls, and calls to/from Gateway to PSTN • SIP test messages • Goals • Informational RFC containing examples use of SIP • Reference for developers and carriers draft-ietf-sip-call-flows-00.txt

  3. Changes since 00 Draft • SIP Telephony Service Examples removed from draft: • Being revised with TRANSFER header in a separate draft. • Updated draft with RFC2543bis changes by adding: • maddr to all Record-Route and Route headers • branch parameter to Via headers inserted by proxies • 487 response to CANCEL scenarios. • Added call flow with example of INFO method. • Added Session: media to all 183 messages. • Corrected a number of typos • Corrected all registrations to have same Call-ID. draft-ietf-sip-call-flows-00.txt

  4. Path Forward • New draft with Service Examples • Last Call when I-D dependencies clear: • 183 Session Progress Message • Reliable Provisional Responses • SIP INFO Method • May simulate some flows to check draft-ietf-sip-call-flows-00.txt

  5. Contact Report any errors or suggestions to: Alan Johnston alan.johnston@wcom.com draft-ietf-sip-call-flows-00.txt

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