RFC 3666 SIP PSTN Call Flows 2 SIP to PSTN Dialing

Transcription

1 Alice's SIP INVITE 100 Trying INVITE ACK 503 Service Unavailable Switch RFC 3666 SIP PSTN Call Flows 2 SIP to PSTN Dialing 2.3 Successful SIP to ISUP PSTN call with overflow ACK YE 183 Session Progress 200 OK INVITE oth Way RTP Media ACK oth Way RTP Media 183 Session Progress 200 OK IAM YE 200 OK 200 OK REL ACM PROGress One Way Voice oth Way Voice RLC V1.1 April 29, 2005 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. 22 pages

2 (1) uses a Location Service function to determine where is located. receives a primary route and a secondary route. is tried first F1 INVITE sip: @ss1.a.example.com;user= SIP/2.0 Max-Forwards: 70 From: Alice <sip: @ss1.a.example.com;user=> To: ob <sip: @ss1.a.example.com;user=> CSeq: 1 INVITE Contact: <sip:alice@client.a.example.com> Proxy-Authorization: Digest username="alice", realm="a.example.com", nonce="b59311c3ba05b401cf80b2a2c5ac51b0", opaque="", uri="sip: @ss1.a.example.com;user=", response="ba6ab44923fa2614b28e3e ab0" 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) F2 INVITE SIP/2.0 Via: SIP/2.0/UDP ss1.a.example.com:5060;branch=z9hg4bk2d Max-Forwards: 69 Record-Route: <sip:ss1.a.example.com;lr> From: Alice To: ob CSeq: 1 INVITE Contact: <sip:alice@client.a.example.com> Content-Type: application/sdp Content-Length: 154 F3 SIP/ Trying Via: SIP/2.0/UDP ss1.a.example.com:5060;branch=z9hg4bk2d ;received= From: Alice <sip: @ss1.a.example.com;user=> To: ob <sip: @ss1.a.example.com;user=> CSeq: 1 INVITE 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/ Service Unavailable Via: SIP/2.0/UDP ss1.a.example.com:5060;branch=z9hg4bk2d ;received= Record-Route: <sip:ss1.a.example.com;lr> From: Alice To: ob ;tag= CSeq: 1 INVITE Content-Length: 0 ob's

5 (4) F5 ACK SIP/2.0 Via: SIP/2.0/UDP ss1.a.example.com:5060;branch=z9hg4bk2d Max-Forwards: 70 From: Alice To: ob ;tag= CSeq: 1 ACK Content-Length: 0 ob's

6 (5) F6 INVITE SIP/2.0 Via: SIP/2.0/UDP ss1.a.example.com:5060;branch=z9hg4bk2d Max-Forwards: 69 Record-Route: <sip:ss1.a.example.com;lr> From: Alice To: ob CSeq: 1 INVITE Contact: <sip:alice@client.a.example.com> 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

7 (6) F7 IAM CdPN= ,NPI=E.164,NOA=National CgPN= ,NPI=E.164,NOA=National ob's

8 RFC Successful SIP to ISUP PSTN call with overflow F8 ACM ob's (7)

9 (8) F9 SIP/ Session Progress Via: SIP/2.0/UDP ss1.a.example.com:5060;branch=z9hg4bk2d ;received= Record-Route: <sip:ss1.a.example.com;lr> From: Alice To: ob ;tag= CSeq: 1 INVITE Contact: <sip:ngw2@a.example.com> Content-Type: application/sdp Content-Length: 146 v=0 o=gw IN IP4 ngw2.a.example.com s=c=in IP4 ngw2.a.example.com t=0 0 m=audio 3456 RTP/AVP 0 a=rtpmap:0 PCMU/8000 ob's

10 (9) F10 SIP/ Session Progress Record-Route: <sip:ss1.a.example.com;lr> From: Alice To: ob ;tag= CSeq: 1 INVITE Contact: <sip:ngw2@a.example.com> Content-Type: application/sdp Content-Length: 146 v=0 o=gw IN IP4 ngw2.a.example.com s=c=in IP4 ngw2.a.example.com t=0 0 m=audio 3456 RTP/AVP 0 a=rtpmap:0 PCMU/8000 ob's

11 RFC Successful SIP to ISUP PSTN call with overflow (10) Two Way RTP Media One Way Voice ob's

12 RFC Successful SIP to ISUP PSTN call with overflow F11 ANM ob's (11)

13 (12) F12 SIP/ OK Via: SIP/2.0/UDP ss1.a.example.com:5060;branch=z9hg4bk2d ;received= Record-Route: <sip:ss1.a.example.com;lr> From: Alice To: ob ;tag= CSeq: 1 INVITE Contact: <sip:ngw2@a.example.com> Content-Type: application/sdp Content-Length: 146 v=0 o=gw IN IP4 ngw2.a.example.com s=c=in IP4 ngw2.a.example.com t=0 0 m=audio 3456 RTP/AVP 0 a=rtpmap:0 PCMU/8000 ob's

14 (13) F13 SIP/ OK Record-Route: <sip:ss1.a.example.com;lr> From: Alice To: ob ;tag= CSeq: 1 INVITE Contact: <sip:ngw2@a.example.com> Content-Type: application/sdp Content-Length: 146 v=0 o=gw IN IP4 ngw2.a.example.com s=c=in IP4 ngw2.a.example.com t=0 0 m=audio 3456 RTP/AVP 0 a=rtpmap:0 PCMU/8000 ob's

15 (14) F14 ACK SIP/2.0 Max-Forwards: 70 Route: <ss1.a.example.com;lr> From: Alice To: ob ;tag= CSeq: 1 ACK Content-Length: 0 ob's

16 (15) F15 ACK SIP/2.0 Via: SIP/2.0/UDP ss1.a.example.com:5060;branch=z9hg4bk2d Max-Forwards: 69 From: Alice To: ob ;tag= CSeq: 1 ACK Content-Length: 0 ob's

17 RFC Successful SIP to ISUP PSTN call with overflow (16) Two Way RTP Media oth Way Voice ob's

18 (17) F16 YE SIP/2.0 Max-Forwards: 70 Route: <ss1.a.example.com;lr> From: Alice To: ob ;tag= CSeq: 2 YE Content-Length: 0 ob's

19 (18) F17 YE SIP/2.0 Via: SIP/2.0/UDP ss1.a.example.com:5060;branch=z9hg4bk2d Max-Forwards: 69 From: Alice To: ob ;tag= CSeq: 2 YE Content-Length: 0 ob's

20 (19) F18 SIP/ OK Via: SIP/2.0/UDP ss1.a.example.com:5060 ;branch=z9hg4bk2d ;received= Via: SIP/2.0/UDP client.a.example.com:5060 ;branch=z9hg4bk74bf9 From: Alice To: ob ;tag= CSeq: 2 YE Content-Length: 0 F20 REL CauseCode=16 Normal ob's

21 (20) F19 SIP/ OK Via: SIP/2.0/UDP client.a.example.com:5060 ;branch=z9hg4bk74bf9 From: Alice To: ob ;tag= CSeq: 2 YE Content-Length: 0 F21 RLC ob's

22 RFC Successful SIP to ISUP PSTN call with overflow ob's (end)