rtcp summary report delivery to sip third parties

IETF-59 draft-johnston-sipping-rtcp-summary-02.txt 1

RTCP Summary Report Delivery to SIP Third Parties

Alan JohnstonHenry Sinnreich

Alan ClarkAmy Pendleton

IETF-59 draft-johnston-sipping-rtcp-summary-02.txt 2

Recent Changes

• Definition of event package– Event parameter used to request mid-session

threshold reports. Default is only end of session summary report.

• Call Flows– End of session and mid-session reporting

• Message body definition• Example Message

IETF-59 draft-johnston-sipping-rtcp-summary-02.txt 3

NOTIFY sip:collector@chicago.example.com SIP/2.0 Via: SIP/2.0/UDP pc22.example.com;branch=z9hG4bK3343d7 Max-Forwards: 70 To: <sip:collector@chicago.example.com>;tag=43524545 From: Alice <sip:alice@example.com>;tag=a3343df32 Call-ID: k3l43id034kevnx7334s CSeq: 4321 NOTIFY Contact: <sip:alice@pc22.example.com> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY Event: rtcp-xr;threshold Accept: application/sdp, message/sipfrag Subscription-State: active;expires=3600 Content-Type: text/plain Content-Length: ...

AlertType:rf LocalMetrics:VQMetrics: plm=loss:05 disc:02 burst=den:0 len:0 gap=den:2 len:0 delay=rt:200 es:140 signal=sig: rerl: n: qs=r:82 xr:82 ml:3.4 mc:3.3 DialogID:38419823470834;to-tag=8472761;from-tag=9123dh311

IETF-59 draft-johnston-sipping-rtcp-summary-02.txt 4

Open Issues

• Event package name is “rtcp-xr” – Should be more general, perhaps “summary-rpt”

• Mid-session threshold summary reports– How to specify: event parameter or package name?

• Event parameter could also be used to specify body format.

– Negotiate threshold value when subscribing?

• Format of Message body– ABNF instead of XML– Readability?

• Discovery when endpoint registers– Interaction between Registrar and Collector

IETF-59 draft-johnston-sipping-rtcp-summary-02.txt 5

Path Forward

• WG Adopt as WG item?

IETF-59 draft-johnston-sipping-rtcp-summary-02.txt 6

Contacts

Alan Johnston

alan.johnston@mci.com

Henry Sinnreich

Henry.sinnreich@mci.com

Alan Clark

alan@telchemy.comAmy Pendleton

aspen@nortelnetworks.com