Hello, For Session Timers in the Session Initiation Protocol (SIP). re-INVITE due Session-Expires must keep the Max-Forwards from original INVITE ? I am not able to find it clear on RFC.
++++++++++++++++++++++++++ INVITE sip:[email protected] SIP/2.0 Content-Length:244 From:<sip:[email protected];user=phone>;tag=Z5diY7j2c9X3DcAj To:<sip:[email protected];user=phone> Via:SIP/2.0/TCP 10.48.4.5:5062;branch=z9hG4bKXD69e_hbDhAWd0.4;yop=00.00.80DDA859.0000.42 F2 Call-ID:FA19D17AD13904A52570E628@AQB27U6u CSeq:1 INVITE Max-Forwards:5 Route:<sip:scscf.ims.volte.com:5091;lr;bcos=O3001002sjnt~cpdb~oto~dpnN7R t5+27200157121;lskpmc=TERM> Record-Route:<sip:[email protected]:5062;yop=00.00.80D DA859.0000.42F2;lr> Request-Disposition:no-fork P-Asserted-Identity:<sip:[email protected];user=phone>,<tel:+151097 94023> P-Asserted-Service:urn:urn-7:3gpp-service.exampletelephony.version1 Session-Expires:144;refresher=uac Min-SE:90 Contact:<sip:10.48.4.5:5062;yop=00.00.80DDA859.0000.42F2> Supported:100rel,precondition,timer,eventlist,norefersub Allow:ACK,BYE,CANCEL,INFO,INVITE,MESSAGE,NOTIFY,OPTIONS,PRACK,PUBLISH,RE FER,REGISTER,SUBSCRIBE,UPDATE P-Charging-Vector:icid-value=gXGJkWddclRyAAAAAkWMBvJCfQU-;icid-generated -at=10.48.4.5;orig-ioi=volte.com P-Early-Media:supported Content-Type:application/sdp Content-Disposition:session;handling=required v=0 o=- 0 0 IN IP4 10.10.10.103 s=- c=IN IP4 10.48.116.1 t=0 0 m=audio 8462 RTP/AVP 0 4 8 96 97 a=rtpmap:0 PCMU/8000 a=rtpmap:4 G723/8000 a=rtpmap:8 PCMA/8000 a=rtpmap:96 G726-40/8000 a=rtpmap:97 G726-24/8000 a=ptime:30 a=sendrecv ++ Re-INVITE INVITE sip:10.52.39.194:5091 SIP/2.0 Content-Length:244 From:<sip:[email protected];user=phone>;tag=Z5diY7j2c9X3DcAj To:<sip:[email protected];user=phone>;tag=9e3d86a7f8e68e31i0 Via:SIP/2.0/UDP 10.48.4.5:5062;branch=z9hG4bKiUD9d0h.jh1XAC.1;yop=00.00.80DDA859.0000.42 F2 Call-ID:FA19D17AD13904A52570E628@AQB27U6u CSeq:2 INVITE Max-Forwards:4 Record-Route:<sip:[email protected]:5062;yop=00.00.80D DA859.0000.42F2;lr> Request-Disposition:no-fork P-Asserted-Service:urn:urn-7:3gpp-service.exampletelephony.version1 Session-Expires:144;refresher=uac Min-SE:90 Contact:<sip:10.48.4.5:5062;yop=00.00.80DDA859.0000.42F2> Supported:timer Allow:ACK,BYE,CANCEL,INFO,INVITE,MESSAGE,NOTIFY,OPTIONS,PRACK,PUBLISH,RE FER,REGISTER,SUBSCRIBE,UPDATE P-Charging-Vector:icid-value=gXGJkWddclRyAAAAAkWMBvJCfQU-;icid-generated -at=10.48.4.5;orig-ioi=volte.com Content-Type:application/sdp Content-Disposition:session;handling=required v=0 o=- 0 0 IN IP4 10.10.10.103 s=- c=IN IP4 10.48.116.1 t=0 0 m=audio 8462 RTP/AVP 0 4 8 96 97 a=rtpmap:0 PCMU/8000 a=rtpmap:4 G723/8000 a=rtpmap:8 PCMA/8000 a=rtpmap:96 G726-40/8000 a=rtpmap:97 G726-24/8000 a=ptime:30 a=sendrecv ++ Re-INVITE INVITE sip:[email protected] SIP/2.0 Via: SIP/2.0/UDP 10.52.39.194;branch=z9hG4bK146812250.3272.9 Content-Length: 244 From: <sip:[email protected];user=phone>;tag=Z5diY7j2c9X3DcAj Via: SIP/2.0/UDP 10.48.4.5:5062;branch=z9hG4bKA87e9VDWf3cYccfB;yop=00.00.80DDA859.0000.42 F2 Call-ID: FA19D17AD13904A52570E628@AQB27U6u CSeq: 3 INVITE Max-Forwards: 4 Record-Route: <sip:[email protected]:5062;yop=00.00.80DDA859.0000.42 F2;lr> Request-Disposition: no-fork P-Asserted-Service:urn:urn-7:3gpp-service.exampletelephony.version1 Session-Expires: 144;refresher=uac Min-SE: 90 Contact: <sip:10.48.4.5:5062;yop=00.00.80DDA859.0000.42F2> Supported: timer Allow: ACK,BYE,CANCEL,INFO,INVITE,MESSAGE,NOTIFY,OPTIONS,PRACK,PUBLISH,REFER,RE GISTER,SUBSCRIBE,UPDATE P-Charging-Vector: icid-value=gXGJkWddclRyAAAAAkWMBvJCfQU-;icid-generated-at=10.48.4.5;orig -ioi=volte.com Content-Type: application/sdp Content-Disposition: session;handling=required To: <sip:[email protected];user=phone>;tag=9e3d86a7f8e68e31i0 Route: <sip:[email protected]:5062;yop=00.00.80DDA859.0000.42 F2;lr> v=0 o=- 0 0 IN IP4 10.10.10.103 s=- c=IN IP4 10.48.116.1 t=0 0 m=audio 8462 RTP/AVP 0 4 8 96 97 a=rtpmap:0 PCMU/8000 a=rtpmap:4 G723/8000 a=rtpmap:8 PCMA/8000 a=rtpmap:96 G726-40/8000 a=rtpmap:97 G726-24/8000 a=ptime:30 a=sendrecv ++ No. Time Source Destination Protocol Info 39 7.272815 10.48.4.5 10.52.39.194 SIP/SDP Request: INVITE sip:[email protected], with session description 40 7.275928 10.52.39.194 10.48.4.5 SIP Status: 100 Trying 43 7.460885 10.52.39.194 10.48.116.1 SIP/SDP Request: INVITE sip:[email protected], with session description 44 7.484717 10.48.116.1 10.52.39.194 SIP Status: 100 Trying 45 7.517536 10.48.116.1 10.52.39.194 SIP Status: 180 Ringing 46 7.649188 10.52.39.194 10.48.4.5 SIP Status: 100 Trying 48 7.649907 10.52.39.194 10.48.4.5 SIP Status: 180 Ringing 54 8.112684 10.48.116.1 10.52.39.194 SIP/SDP Status: 200 OK, with session description 55 8.162860 10.52.39.194 10.48.4.5 SIP/SDP Status: 200 OK, with session description 65 8.608249 10.48.116.1 10.52.39.194 SIP/SDP Status: 200 OK, with session description 69 8.669823 10.52.39.194 10.48.4.5 SIP/SDP Status: 200 OK, with session description 72 8.671396 10.48.4.5 10.52.39.194 SIP Request: ACK sip:10.52.39.194:5091 73 8.864934 10.52.39.194 10.48.116.1 SIP Request: ACK sip:[email protected] 236 80.678623 10.48.4.5 10.52.39.194 SIP/SDP Request: INVITE sip:10.52.39.194:5091, with session description 239 80.863047 10.52.39.194 10.48.116.1 SIP/SDP Request: INVITE sip:[email protected], with session description 241 80.899196 10.48.116.1 10.52.39.194 SIP/SDP Status: 200 OK, with session description 242 80.980321 10.52.39.194 10.48.4.5 SIP/SDP Status: 200 OK, with session description 243 80.981484 10.48.4.5 10.52.39.194 SIP Request: ACK sip:10.52.39.194:5091 244 81.200899 10.52.39.194 10.48.116.1 SIP Request: ACK sip:[email protected] 371 152.987684 10.48.4.5 10.52.39.194 SIP/SDP Request: INVITE sip:10.52.39.194:5091, with session description 372 153.195134 10.52.39.194 10.48.116.1 SIP/SDP Request: INVITE sip:[email protected], with session description 374 153.226373 10.48.116.1 10.52.39.194 SIP/SDP Status: 200 OK, with session description 375 153.362161 10.52.39.194 10.48.4.5 SIP/SDP Status: 200 OK, with session description 376 153.363363 10.48.4.5 10.52.39.194 SIP Request: ACK sip:10.52.39.194:5091 379 153.559352 10.52.39.194 10.48.116.1 SIP Request: ACK sip:[email protected] 517 225.366681 10.48.4.5 10.52.39.194 SIP/SDP Request: INVITE sip:10.52.39.194:5091, with session description 519 225.559567 10.52.39.194 10.48.116.1 SIP/SDP Request: INVITE sip:[email protected], with session description 520 225.592297 10.48.116.1 10.52.39.194 SIP/SDP Status: 200 OK, with session description 521 225.747031 10.52.39.194 10.48.4.5 SIP/SDP Status: 200 OK, with session description 522 225.748312 10.48.4.5 10.52.39.194 SIP Request: ACK sip:10.52.39.194:5091 523 225.861160 10.52.39.194 10.48.116.1 SIP Request: ACK sip:[email protected] 650 297.755728 10.48.4.5 10.52.39.194 SIP/SDP Request: INVITE sip:10.52.39.194:5091, with session description 654 297.860403 10.52.39.194 10.48.116.1 SIP/SDP Request: INVITE sip:[email protected], with session description 655 297.898123 10.48.116.1 10.52.39.194 SIP/SDP Status: 200 OK, with session description 656 297.988293 10.52.39.194 10.48.4.5 SIP/SDP Status: 200 OK, with session description 657 297.989438 10.48.4.5 10.52.39.194 SIP Request: ACK sip:10.52.39.194:5091 658 298.200086 10.52.39.194 10.48.116.1 SIP Request: ACK sip:[email protected] 783 369.994626 10.48.4.5 10.52.39.194 SIP/SDP Request: INVITE sip:10.52.39.194:5091, with session description 784 370.194317 10.52.39.194 10.48.116.1 SIP/SDP Request: INVITE sip:[email protected], with session description 786 370.228081 10.48.116.1 10.52.39.194 SIP/SDP Status: 200 OK, with session description 787 370.359389 10.52.39.194 10.48.4.5 SIP/SDP Status: 200 OK, with session description 788 370.360624 10.48.4.5 10.52.39.194 SIP Request: ACK sip:10.52.39.194:5091 791 370.556595 10.52.39.194 10.48.116.1 SIP Request: ACK sip:[email protected] 930 442.363703 10.48.4.5 10.52.39.194 SIP/SDP Request: INVITE sip:10.52.39.194:5091, with session description 932 442.556830 10.52.39.194 10.48.116.1 SIP/SDP Request: INVITE sip:[email protected], with session description 933 442.593812 10.48.116.1 10.52.39.194 SIP/SDP Status: 200 OK, with session description 934 442.744310 10.52.39.194 10.48.4.5 SIP/SDP Status: 200 OK, with session description 935 442.745542 10.48.4.5 10.52.39.194 SIP Request: ACK sip:10.52.39.194:5091 936 442.858396 10.52.39.194 10.48.116.1 SIP Request: ACK sip:[email protected] 1063 514.752714 10.48.4.5 10.52.39.194 SIP/SDP Request: INVITE sip:10.52.39.194:5091, with session description 1065 514.959056 10.52.39.194 10.48.116.1 SIP/SDP Request: INVITE sip:[email protected], with session description 1066 514.995945 10.48.116.1 10.52.39.194 SIP/SDP Status: 200 OK, with session description 1067 515.054816 10.52.39.194 10.48.4.5 SIP/SDP Status: 200 OK, with session description 1068 515.056007 10.48.4.5 10.52.39.194 SIP Request: ACK sip:10.52.39.194:5091 1069 515.297907 10.52.39.194 10.48.116.1 SIP Request: ACK sip:[email protected] 1211 587.061755 10.48.4.5 10.52.39.194 SIP/SDP Request: INVITE sip:10.52.39.194:5091, with session description 1213 587.295051 10.52.39.194 10.48.116.1 SIP/SDP Request: INVITE sip:[email protected], with session description 1214 587.334615 10.48.116.1 10.52.39.194 SIP/SDP Status: 200 OK, with session description 1215 587.440659 10.52.39.194 10.48.4.5 SIP/SDP Status: 200 OK, with session description 1216 587.441977 10.48.4.5 10.52.39.194 SIP Request: ACK sip:10.52.39.194:5091 1217 587.554806 10.52.39.194 10.48.116.1 SIP Request: ACK sip:[email protected] 1347 659.450748 10.48.4.5 10.52.39.194 SIP/SDP Request: INVITE sip:10.52.39.194:5091, with session description 1349 659.654479 10.52.39.194 10.48.116.1 SIP/SDP Request: INVITE sip:[email protected], with session description 1350 659.699404 10.48.116.1 10.52.39.194 SIP/SDP Status: 200 OK, with session description 1351 659.752189 10.52.39.194 10.48.4.5 SIP/SDP Status: 200 OK, with session description 1352 659.753387 10.48.4.5 10.52.39.194 SIP Request: ACK sip:10.52.39.194:5091 1353 660.001140 10.52.39.194 10.48.116.1 SIP Request: ACK sip:[email protected] 1481 731.759759 10.48.4.5 10.52.39.194 SIP/SDP Request: INVITE sip:10.52.39.194:5091, with session description 1485 731.956311 10.52.39.194 10.48.116.1 SIP/SDP Request: INVITE sip:[email protected], with session description 1486 731.987341 10.48.116.1 10.52.39.194 SIP/SDP Status: 200 OK, with session description 1487 732.054016 10.52.39.194 10.48.4.5 SIP/SDP Status: 200 OK, with session description 1488 732.055262 10.48.4.5 10.52.39.194 SIP Request: ACK sip:10.52.39.194:5091 1489 732.289282 10.52.39.194 10.48.116.1 SIP Request: ACK sip:[email protected] 1627 804.058753 10.48.4.5 10.52.39.194 SIP/SDP Request: INVITE sip:10.52.39.194:5091, with session description 1629 804.291320 10.52.39.194 10.48.116.1 SIP/SDP Request: INVITE sip:[email protected], with session description 1630 804.323279 10.48.116.1 10.52.39.194 SIP/SDP Status: 200 OK, with session description 1631 804.437933 10.52.39.194 10.48.4.5 SIP/SDP Status: 200 OK, with session description 1632 804.439058 10.48.4.5 10.52.39.194 SIP Request: ACK sip:10.52.39.194:5091 1635 804.551054 10.52.39.194 10.48.116.1 SIP Request: ACK sip:[email protected] 1762 876.447779 10.48.4.5 10.52.39.194 SIP/SDP Request: INVITE sip:10.52.39.194:5091, with session description 1764 876.651718 10.52.39.194 10.48.116.1 SIP/SDP Request: INVITE sip:[email protected], with session description 1765 876.689920 10.48.116.1 10.52.39.194 SIP/SDP Status: 200 OK, with session description 1766 876.749488 10.52.39.194 10.48.4.5 SIP/SDP Status: 200 OK, with session description 1767 876.750705 10.48.4.5 10.52.39.194 SIP Request: ACK sip:10.52.39.194:5091 1768 876.959316 10.52.39.194 10.48.116.1 SIP Request: ACK sip:[email protected] Regards! Valdemar _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
