RTCP Summary Report Delivery to SIP Third Parties

1
RTCP Summary Report Delivery to SIP Third Parties

• Alan Johnston
• Henry Sinnreich
• Alan Clark
• Amy Pendleton

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

3
NOTIFY sipcollector_at_chicago.example.c
om SIP/2.0 Via SIP/2.0/UDP
pc22.example.combranchz9hG4bK3343d7
Max-Forwards 70 To
ltsipcollector_at_chicago.example.comgttag43524545
From Alice ltsipalice_at_example.comgttag
a3343df32 Call-ID
k3l43id034kevnx7334s CSeq 4321
NOTIFY Contact ltsipalice_at_pc22.exampl
e.comgt Allow INVITE, ACK, CANCEL,
OPTIONS, BYE, REFER, SUBSCRIBE,
NOTIFY Event rtcp-xrthreshold
Accept application/sdp, message/sipfrag
Subscription-State activeexpires3600
Content-Type text/plain
Content-Length ... AlertTyperf
LocalMetricsVQMetrics
plmloss05 disc02 burstden0
len0 gapden2 len0
delayrt200 es140 signalsig rerl
n qsr82 xr82 ml3.4 mc3.3
DialogID38419823470834to-tag8472761from-t
ag9123dh311
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

5
Path Forward

• WG Adopt as WG item?

6
Contacts

• Alan Johnston
• alan.johnston_at_mci.com

• Henry Sinnreich
• Henry.sinnreich_at_mci.com

Alan Clark alan_at_telchemy.com
Amy Pendleton aspen_at_nortelnetworks.com