SDP Offer Answer Examples

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Presentation transcript:

SDP Offer Answer Examples Alan Johnston & Robert Sparks IETF-55 draft-johnston-mmusic-offer-answer-examples-00.txt

Motivation Experience from SIPit Lack of interesting SDP in SIP Call Flows Usage critical in some uses: Codec negotiation 3pcc Call hold IETF-55 draft-johnston-mmusic-offer-answer-examples-00.txt

Approach Brief discussion of motivation and result of scenario. Complete Offer/Answer (sometimes with 2nd exchange) SDP messages Include examples of: multiple codecs, media types, direction attributes, connection addresses, dynamic payloads, etc. IETF-55 draft-johnston-mmusic-offer-answer-examples-00.txt

Contents Codec Negotiation and Selection Hold and Resume Addition and Deletion of Streams 3pcc IETF-55 draft-johnston-mmusic-offer-answer-examples-00.txt

Plan Careful review by implementors Addition of new scenarios Suggestions most welcome WG interest? IETF-55 draft-johnston-mmusic-offer-answer-examples-00.txt

Contacts Alan Johnston alan.johnston@wcom.com sip:alan@digitalari.com Robert Sparks rsparks@dynamicsoft.com sip:rsparks@dynamicsoft.com IETF-55 draft-johnston-mmusic-offer-answer-examples-00.txt