RFC 3666 SIP PSTN Call Flows 2 SIP to PSTN Dialing

Transcription

1 Alice's SIP Switch RFC 3666 SIP PSTN Call Flows 2 SIP to PSTN Dialing INVITE 100 Trying INVITE 100 Trying IAM 2.7 Unsuccessful SIP to PSTN: ANM Timeout V1.1 April 29, 2005 ACK 183 Session Progress 480 Temporarily Unavailable ACK 183 Session Progress 480 Temporarily Unavailable Timer on Expires REL ACM RLC This is a representation, as a slide show, of the SIP examples detailed in RFC 3666 SIP PSTN Call Flows. SIP messages are reported in strict conformance with this RFC. 13 pages

2 (1) F1 INVITE SIP/2.0 Max-Forwards: 70 To: ob Contact: Proxy-Authorization: Digest username="alice", realm="a.example.com", nonce="da2c5ac51bb59a05j1c3b0b01cf832b40", opaque="", response="579cb9db184cdc25bf816f37cbc03c7d" Content-Type: application/sdp Content-Length: 154 v=0 o=alice IN IP4 client.a.example.com s=c=in IP4 client.a.example.com t=0 0 m=audio RTP/AVP 0 a=rtpmap:0 PCMU/8000 ob's

3 (2) F3 INVITE SIP/2.0 Via: SIP/2.0/TCP ss1.a.example.com:5060;branch=z9hg4bk2d Max-Forwards: 69 Record-Route: <sip:ss1.a.example.com;lr> To: ob Contact: Content-Type: application/sdp Content-Length: 154 F2 SIP/ Trying To: ob Content-Length: 0 v=0 o=alice IN IP4 client.a.example.com s=c=in IP4 client.a.example.com t=0 0 m=audio RTP/AVP 0 a=rtpmap:0 PCMU/8000 ob's

4 (3) F4 SIP/ Trying Via: SIP/2.0/TCP ss1.a.example.com:5060;branch=z9hg4bk2d ;received= To: ob Content-Length: 0 F5 IAM CdPN= ,NPI=E.164,NOA=National CgPN= ,NPI=E.164,NOA=National ob's

5 F6 ACM ob's (4)

6 (5) F7 SIP/ Session Progress Via: SIP/2.0/TCP ss1.a.example.com:5060;branch=z9hg4bk2d ;received= Record-Route: <sip:ss1.a.example.com;lr> To: ob ;tag= Contact: Content-Type: application/sdp Content-Length: 146 v=0 o=gw IN IP4 ngw1.a.example.com s=c=in IP4 ngw1.a.example.com t=0 0 m=audio 3456 RTP/AVP 0 a=rtpmap:0 PCMU/8000 ob's

7 (6) F8 SIP/ Session Progress Record-Route: <sip:ss1.a.example.com;lr> To: ob ;tag= Contact: Content-Type: application/sdp Content-Length: 146 v=0 o=gw IN IP4 ngw1.a.example.com s=c=in IP4 ngw1.a.example.com t=0 0 m=audio 3456 RTP/AVP 0 a=rtpmap:0 PCMU/8000 ob's

8 (7) Timer on Expires F9 REL CauseCode=18 No user responding ob's

9 F10 RLC ob's (8)

10 (9) F11 SIP/ Temporarily Unavailable Via: SIP/2.0/TCP ss1.a.example.com:5060;branch=z9hg4bk2d ;received= To: ob ;tag= Error-Info: Content-Length: 0 ob's

11 (10) F12 ACK SIP/2.0 Via: SIP/2.0/TCP ss1.a.example.com:5060;branch=z9hg4bk2d Max-Forwards: 70 To: ob ;tag= CSeq: 1 ACK Content-Length: 0 F13 SIP/ Temporarily Unavailable To: ob <sip: @ss1.a.example.com;user=> ;tag= Error-Info: <sip:temp-unavail-ann@ann.a.example.com> Content-Length: 0 ob's

12 (11) F14 ACK SIP/2.0 Max-Forwards: 70 To: ob ;tag= CSeq: 1 ACK Content-Length: 0 ob's

13 (end) ob's