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Open Issues in SIP Service Examples Recent Changes

Open Issues in SIP Service Examples Recent Changes. Added 2-party to 3-party conversion Uses a URI to identify the conference and SIP Events Scenarios User is added by participant User requests admission (joins). Open Issues. 2-Party to 3-Party transition

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Open Issues in SIP Service Examples Recent Changes

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  1. Open Issues in SIP Service ExamplesRecent Changes • Added 2-party to 3-party conversion • Uses a URI to identify the conference and SIP Events • Scenarios • User is added by participant • User requests admission (joins) draft-ietf-sipping-service-examples-02.txt

  2. Open Issues • 2-Party to 3-Party transition • subscription/interaction between UA and bridge • use of Join/Fork? • discovery of conference URI • Single Line Extension • needs more attention • To Do: • align with latest REFER changes • include Conference Package in flow • Contact: • alan.johnston@wcom.com draft-ietf-sipping-service-examples-02.txt

  3. 2.9 3-way Conference – Third Party is Added User A User B Bridge User C | RTP | | | |<==============>| | | |INVITE (hold)/200/ACK | | |<---------------| | | | No RTP | INVITE/200/ACK | | |------------->| | | | RTP | | | |<============>| | | REFER Refer-To:Bridge/202 | | |<---------------| | | | INVITE/200/ACK | | |------------------------------>| | | RTP | | |<=============================>| | | NOTIFY/200 | | | |--------------->| | | | BYE/200 | | | |<---------------| | | | | REFER Refer-To:C/202 | | |------------->| | | | | INVITE/180/200/ACK | | |------------->| | | | RTP | | | NOTIFY/200 |<============>| | |<-------------| | draft-ietf-sipping-service-examples-02.txt

  4. 2.10 3-way Conference – Third Party Joins User A User B Bridge User C | | | | | RTP | | INVITE | |<==============>| |<-------------| | | | 180 | | | NOTIFY/200 |------------->| | |<-------------| | |INVITE (hold)/200/ACK | | |<---------------| | | | No RTP | INVITE/200/ACK | | |------------->| | | | RTP | | | |<============>| 200 OK | | | |------------->| | | | ACK | | | |<-------------| | | | RTP | | | NOTIFY/200 |<============>| | |<-------------| | | REFER Refer-To:Bridge/202 | | |<---------------| | | | INVITE/200/ACK | | |------------------------------>| | | RTP | | |<=============================>| | | NOTIFY/200 | | | |--------------->| | | | BYE/200 | | | |<---------------| | | draft-ietf-sipping-service-examples-02.txt

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