sdp offer answer examples

IETF-55 draft-johnston-mmusic-offer-answer-examples-00.txt

1

SDP Offer Answer Examples

Alan Johnston & Robert Sparks


2

Motivation

• Experience from SIPit

• Lack of interesting SDP in SIP Call Flows

• Usage critical in some uses:– Codec negotiation– 3pcc– Call hold


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.


4

Contents

• Codec Negotiation and Selection

• Hold and Resume

• Addition and Deletion of Streams

• 3pcc


5

Plan

• Careful review by implementors

• Addition of new scenarios– Suggestions most welcome

• WG interest?


6

Contacts

Alan Johnston

[email protected]

sip:[email protected]

Robert Sparks

[email protected]

sip:[email protected]

sdp offer answer examples

Documents