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

2. 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

3. 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

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

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

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