Hello, I have two opensip servers, exactly same configuration, but one is acting different. This is the call flow. Origination -- Invite------------> Opensips Origination < 100 Trying ------ Opensips ---------------------------------------Opensips ----invite --> End user (freeswitch) ----------------------------------------Opensips <--- 100 trying -- Freeswitch ----------------------------------------Opensips <-- 183 Ringing -- Freeswitch Keeps waiting and never forward 183 back to Origination.
While 2nd opensips works just fine/ MTU is 1500 on both. Working Server versions Centos 5.2, Openisps 11-2 Not working, version (Different OS, same version of Opensips) Cent OS 5.4, Opensips 11-2 Below is the full trace. Any hint to fix this will big help. I am suspecting fragmented packet size in 183 Session Progress, but not sure how to fix it. If the packet is not fragmented all works fine. This is original trace, ALL IPs has been modified for security. 15.43.72.36:5060 -> 29.16.115.170:5060 INVITE sip:+13033334...@domain.opensips.company.com:5060;user=phone;transport=UDP;maddr=29.16.115.170 SIP/2.0. v: SIP/2.0/UDP 15.43.72.36:5060 ;branch=z9hG4bKa83557bc149a92c4dd2e82551235a4d3.35f93e16. Record-Route: <sip:15.43.72.36:5060;lr>. Remote-Party-ID: <sip:+16784567634@52.88.1.5 >;screen=yes;party=calling;privacy=off. f: <sip:+16784567634@19.73.4.24:5060 ;user=phone>;tag=-45026-1a697ef-67d2935e-1a697ef. t: <sip:+13033334444@52.88.1.5:5060;user=phone>. i: b3338bd0185eadc713c41a697ef72c17e921839f4f01a344bb8-0091-7406. CSeq: 1 INVITE. Allow: ACK,BYE,CANCEL,INVITE,OPTIONS,INFO,SUBSCRIBE,REFER,NOTIFY,PRACK. v: SIP/2.0/UDP 52.88.1.5:5060 ;branch=z9hG4bK0cba239efe292bb148db0d60f1938f42.4937234e;received=52.88.1.5. v: SIP/2.0/UDP IRW6:5060;maddr=19.73.4.24;branch=z9hG4bK-1a697ef-72c17e92-7809c98f;received=19.73.94.24. Max-Forwards: 15. m: <sip:19.73.4.24:5060;transport=UDP>. k: 100rel, resource-priority, replaces. c: application/sdp. l: 235. Record-Route: <sip:52.88.1.5;lr>. . v=0. o=PVG 1453494628460 1453494628460 IN IP4 199.173.133.17. s=-. p=+1 6135555555. c=IN IP4 199.173.133.17. t=0 0. m=audio 34552 RTP/AVP 18 0 8 101. a=rtpmap:101 telephone-event/8000. a=fmtp:101 0-15. a=ptime:20. a=fmtp:18 annexb=no. # U 29.16.115.170:5060 -> 15.43.72.36:5060 SIP/2.0 100 Giving a try. v: SIP/2.0/UDP 15.43.72.36:5060 ;branch=z9hG4bKa83557bc149a92c4dd2e82551235a4d3.35f93e16. f: <sip:+16784567634@19.73.4.24:5060 ;user=phone>;tag=-45026-1a697ef-67d2935e-1a697ef. t: <sip:+13033334444@52.88.1.5:5060;user=phone>. i: b3338bd0185eadc713c41a697ef72c17e921839f4f01a344bb8-0091-7406. CSeq: 1 INVITE. v: SIP/2.0/UDP 52.88.1.5:5060 ;branch=z9hG4bK0cba239efe292bb148db0d60f1938f42.4937234e;received=52.88.1.5. v: SIP/2.0/UDP IRW6:5060;maddr=19.73.4.24;branch=z9hG4bK-1a697ef-72c17e92-7809c98f;received=19.73.94.24. Server: Opensips SIP Gateway. Content-Length: 0. . # U 29.16.115.170:5060 -> 28.3.8.20:5060 INVITE sip:13033334444@28.3.8.20:5060;user=phone;transport=UDP SIP/2.0. Record-Route: <sip:29.16.115.170;lr;ftag=-45026-1a697ef-67d2935e-1a697ef;did=c63.65dae2a5>. Via: SIP/2.0/UDP 29.16.115.170:5060;branch=z9hG4bK3a79.ead0d7c5.0. v: SIP/2.0/UDP 15.43.72.36:5060 ;branch=z9hG4bKa83557bc149a92c4dd2e82551235a4d3.35f93e16. Record-Route: <sip:15.43.72.36:5060;lr>. Remote-Party-ID: <sip:+16784567634@52.88.1.5 >;screen=yes;party=calling;privacy=off. f: <sip:+16784567634@19.73.4.24:5060 ;user=phone>;tag=-45026-1a697ef-67d2935e-1a697ef. t: <sip:+13033334444@52.88.1.5:5060;user=phone>. i: b3338bd0185eadc713c41a697ef72c17e921839f4f01a344bb8-0091-7406. CSeq: 1 INVITE. Allow: ACK,BYE,CANCEL,INVITE,OPTIONS,INFO,SUBSCRIBE,REFER,NOTIFY,PRACK. v: SIP/2.0/UDP 52.88.1.5:5060 ;branch=z9hG4bK0cba239efe292bb148db0d60f1938f42.4937234e;received=52.88.1.5. v: SIP/2.0/UDP IRW6:5060;maddr=19.73.4.24;branch=z9hG4bK-1a697ef-72c17e92-7809c98f;received=19.73.94.24. Max-Forwards: 14. m: <sip:19.73.4.24:5060;transport=UDP>. k: 100rel, resource-priority, replaces. c: application/sdp. l: 235. Record-Route: <sip:52.88.1.5;lr>. . v=0. o=PVG 1453494628460 1453494628460 IN IP4 199.173.133.17. s=-. p=+1 6135555555. c=IN IP4 199.173.133.17. t=0 0. m=audio 34552 RTP/AVP 18 0 8 101. a=rtpmap:101 telephone-event/8000. a=fmtp:101 0-15. a=ptime:20. a=fmtp:18 annexb=no. ##### U 28.3.8.20:5060 -> 29.16.115.170:5060 SIP/2.0 100 Trying. Via: SIP/2.0/UDP 29.16.115.170:5060;branch=z9hG4bK3a79.ead0d7c5.0. Via: SIP/2.0/UDP 15.43.72.36:5060 ;branch=z9hG4bKa83557bc149a92c4dd2e82551235a4d3.35f93e16. Via: SIP/2.0/UDP 52.88.1.5:5060 ;branch=z9hG4bK0cba239efe292bb148db0d60f1938f42.4937234e;received=52.88.1.5. Via: SIP/2.0/UDP IRW6:5060;maddr=19.73.4.24;branch=z9hG4bK-1a697ef-72c17e92-7809c98f;received=19.73.94.24. Record-Route: <sip:29.16.115.170;lr;ftag=-45026-1a697ef-67d2935e-1a697ef;did=c63.65dae2a5>. Record-Route: <sip:15.43.72.36:5060;lr>. Record-Route: <sip:52.88.1.5;lr>. From: <sip:+16784567634@19.73.4.24:5060 ;user=phone>;tag=-45026-1a697ef-67d2935e-1a697ef. To: <sip:+13033334444@52.88.1.5:5060;user=phone>. Call-ID: b3338bd0185eadc713c41a697ef72c17e921839f4f01a344bb8-0091-7406. CSeq: 1 INVITE. User-Agent: FreeSWITCH-mod_sofia/1.2.12+git~20130816T225403Z~8566ffa82a. Content-Length: 0. . ########################## ############################### U 28.3.8.20:5060 -> 29.16.115.170:5060 SIP/2.0 183 Session Progress. Via: SIP/2.0/UDP 29.16.115.170:5060;branch=z9hG4bK3a79.ead0d7c5.0. Via: SIP/2.0/UDP 15.43.72.36:5060 ;branch=z9hG4bKa83557bc149a92c4dd2e82551235a4d3.35f93e16. Via: SIP/2.0/UDP 52.88.1.5:5060 ;branch=z9hG4bK0cba239efe292bb148db0d60f1938f42.4937234e;received=52.88.1.5. Via: SIP/2.0/UDP IRW6:5060;maddr=19.73.4.24;branch=z9hG4bK-1a697ef-72c17e92-7809c98f;received=19.73.94.24. Record-Route: <sip:29.16.115.170;lr;ftag=-45026-1a697ef-67d2935e-1a697ef;did=c63.65dae2a5>. Record-Route: <sip:15.43.72.36:5060;lr>. Record-Route: <sip:52.88.1.5;lr>. From: <sip:+16784567634@19.73.4.24:5060 ;user=phone>;tag=-45026-1a697ef-67d2935e-1a697ef. To: <sip:+13033334444@52.88.1.5:5060;user=phone>;tag=p5ZtZ40SSXprB. Call-ID: b3338bd0185eadc713c41a697ef72c17e921839f4f01a344bb8-0091-7406. CSeq: 1 INVITE. Contact: <sip:+13033334444@28.3.8.20:5060;transport=udp>. User-Agent: FreeSWITCH-mod_sofia/1.2.12+git~20130816T225403Z~8566ffa82a. Accept: application/sdp. Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE, REGISTER, REFER, NOTIFY, PUBLISH, SUBSCRIBE. Supported: timer, precondition, path, replaces. Allow-Events: talk, hold, conference, presence, dialog, line-seize, call-info, sla, include-session-description, presence.winfo, message-summary, refer. Content-Type: application/sdp. Content-Disposition: session. Content-Length: 249. Remote-Party-ID: "13033334444" <sip:13033334444@52.88.1.5>;party=calli # // Fragmented packet second part U 28.3.8.20 -> 29.16.115.170 +32125@1480:277 ng;privacy=off;screen=no. . v=0. o=FreeSWITCH 1453563985 1453563986 IN IP4 28.3.8.20. s=FreeSWITCH. c=IN IP4 28.3.8.20. t=0 0. m=audio 21814 RTP/AVP 0 101. a=rtpmap:0 PCMU/8000. a=rtpmap:101 telephone-event/8000. a=fmtp:101 0-16. a=silenceSupp:off - - - -. a=ptime:20. #########################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################
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