1. sip-qos-osp-011 To Do Items for Interdomain SIP QoS SIP SIP 4xx failure messages for QoS (coordinate with DCS group) SIP and OSP interworking RFI SDP qos-attribute= qos assured | qos enabled COPS Clients to support SIP and RSVP coordination Client to support OSP functions Policy Local networks: PIB for RSVP Transit networks: DiffServ specifics for voice Metering Traffic flow metrics for interdomain use …what it takes to build interdomain SIP telephony w. QoS… In scope for SIP WG or new WG? See the evidence…

2. sip-qos-osp-012 Interdomain SIP-QoS Needs Framework Internet Access Network – ISP1 Internet Access Network – ISP2 Internet Transit Network(s) Edge Router Border Router Edge Router Clearing House to IP transit network Analog, PBX or ISDN phones Policy Server SIP Proxy Edge Router 802.1p LAN Access Network IP Tel Gateway Circuit SW Net SIP Phone PC Wireless devices Interdomain and transit model Access network

3. sip-qos-osp-013 QoS Models for IP Telephony 1.QoS Assured: Emulates the PSTN No QoS – no call (DCSGROUP IP or OK?) 2.QoS Enabled: Internet style QoS most of the time Give user the choice to proceed without QoS 3.Best Effort: No commercial grade service Local Policy Models Push model, pros/cons Pull model, pros/cons

4. sip-qos-osp-014 Detailed Call Flows: QoS Enabled Pull Model

5. sip-qos-osp-015 QoS Enabled BYE – Push Model SIP1 POL1 CH POL2 GWY SIP2 R2R1 Established Call BYE PATHTEAR SIP Phone DRQ(OSP) BYE PATHTEAR DRQ path DRQ resv DRQ path Telephony Signaling RSVP Signaling 200 OK DRQ resv

6. sip-qos-osp-016 QoS Enabled Push Model: RSVP Teardown