RTP Media Stream Pause / Resume draft-westerlund-avtext-rtp-stream-pause-05 Bo Burman IPR Disclosure › For referred draft-westerlund-avtext-rtp-stream-pause – http://datatracker.ietf.org/ipr/1641/ (Ericsson) – https://datatracker.ietf.org/ipr/1935/ (Microsoft) RTP Pause / Resume | IETF 89 - AVTEXT | March 2014 | Page 2 (10) Changes Since -04 › Improved and detailed text on use of the simplified mode where TMMBR/TMMBN are used for pause and resume › Editorial improvements RTP Pause / Resume | IETF 89 - AVTEXT | March 2014 | Page 3 (10) Presentation Goal › Brief recapitulation of the problem › WG consensus on way forward RTP Pause / Resume | IETF 89 - AVTEXT | March 2014 | Page 4 (10) Pause Problem Overview (1) M forwards from B to A and has no need for C A B M PAUSE C C RTP Pause / Resume | IETF 89 - AVTEXT | March 2014 | Page 5 (10) Pause Problem Overview (2) M forwards from B to A and has no need for C A B M PAUSED C C RTP Pause / Resume | IETF 89 - AVTEXT | March 2014 | Page 6 (10) Pause Problem Overview (3) M now needs to forward from C to A and has no need for B A M B PAUSE B RESUME C C RTP Pause / Resume | IETF 89 - AVTEXT | March 2014 | Page 7 (10) Pause Problem Overview (4) M forwards from C to A and has no need for B A M B PAUSED B C RTP Pause / Resume | IETF 89 - AVTEXT | March 2014 | Page 8 (10) Two Solution Modes › Generic › Supported Topologies – Any › Pause = PAUSE – Delayed media action – Can be refused › Paused = PAUSED › Resume = RESUME › Refuse = REFUSE – Both for PAUSE and RESUME › New SDP signaling – a=rtcp-fb:* ccm pause – a=rfcp-fb:* ccm paused RTP Pause / Resume | IETF 89 - AVTEXT | March 2014 | Page 9 (10) › Simplified › Supported Topologies – Point-to-point – Mixer › Pause = TMMBR 0 – Immediate media action – Cannot be refused › Paused = TMMBN 0 › Resume = TMMBR >0 › Refuse = TMMBN 0 – For Resume (TMMBR >0) only › Existing SDP signaling – a=rtcp-fb:* ccm tmmbr Way Forward › Propose adoption as WG draft RTP Pause / Resume | IETF 89 - AVTEXT | March 2014 | Page 10 (10)