1 / 6

To Do Items for Interdomain SIP QoS

To Do Items for Interdomain SIP QoS. …what it takes to build interdomain SIP telephony w. 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

dacey
Download Presentation

To Do Items for Interdomain SIP QoS

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. To Do Items for Interdomain SIP QoS …what it takes to build interdomain SIP telephony w. 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 In scope for SIP WG or new WG? See the evidence… sip-qos-osp-01

  2. Clearing House Wireless devices Access Network Policy Server to IP transit network SIP Proxy SIP Phone Circuit SW Net IP Tel Gateway Edge Router 802.1p LAN Internet Access Network – ISP1 Internet Transit Network(s) Internet Access Network – ISP2 Analog, PBX or ISDN phones PC Edge Router Border Router Border Router Edge Router Interdomain SIP-QoS Needs Framework Interdomain and transit model Access network sip-qos-osp-01

  3. QoS Models for IP Telephony • QoS Assured: Emulates the PSTN • No QoS – no call (DCSGROUP IP or OK?) • QoS Enabled: Internet style • QoS most of the time • Give user the choice to proceed without QoS • Best Effort: No commercial grade service Local Policy Models • Push model, pros/cons • Pull model, pros/cons sip-qos-osp-01

  4. Detailed Call Flows: QoS Enabled Pull Model sip-qos-osp-01

  5. QoS Enabled BYE – Push Model SIP Phone POL1 POL2 SIP2 SIP1 R1 CH R2 GWY Established Call BYE BYE Telephony Signaling DRQ(OSP) BYE 200 OK 200 OK 200 OK PATHTEAR PATHTEAR DRQ path PATHTEAR DRQ resv DRQ path DRQ resv RSVP Signaling PATHTEAR PATHTEAR PATHTEAR sip-qos-osp-01

  6. QoS Enabled Push Model: RSVP Teardown sip-qos-osp-01

More Related