Hi Richard, Thanks for the suggestion. The messages between the servers are transferred via a TCP connection (and all to the same IP address). So I think it should be well received by the server. I am still clueless...
Thanks, Peter Am Donnerstag, 20. Februar 2020, 11:00:56 CET schrieb Richard Phernambucq: > Hi, > > Header-wise your ACK appears OK. > > I suspect your problem is that the destination address for the ACK > (200.200.200.200) is not routable from your SIP-server. This might > explain why the provider's server keeps retransmitting the response. > > BR, > Richard > > On 20-2-2020 10:39, Dr. Peter Sties wrote: > > Hi ! > > > > I have some problems within a SIP trunc where our SIP-server talks > > directly to different provider SIP servers. One of these servers on the > > other side does not recognize our ACK to the 200 OK message. The other > > server keeps on repeating the 200 OK message. > > > > I have gone through all the header fields and compared it with the SIP > > specification and examples but I do not have clue why the other side does > > not accept our ACK. I would be great if someone can have a look at it and > > give me some hints. > > > > Here is the SIP-Trace: > > 2020-02-10 13:04:27.467 <-- send SIP TO 200.200.200.200 653 bytes > > INVITE sip:+491234567@200.200.200.200 SIP/2.0 > > Via: SIP/2.0/TCP 100.100.100.100:5060;branch=z9hG4bKDGT5EGVPVDE4I146 > > From: > > <sip:+4987654321@100.100.100.100:5060;user=phone>;tag=C8UF20CAKNLTLJ18 > > To: <sip:+491234567@200.200.200.200:5060;user=phone> > > Call-ID: E4COR3MNVB8AK908 > > CSeq: 1 INVITE > > Contact: <sip:100.100.100.100:5060> > > Max-Forwards: 70 > > Allow: INVITE, ACK, CANCEL, OPTIONS, BYE > > Content-Type: application/sdp > > Content-Length: 206 > > > > v=0 > > o=om 73848 1 IN IP4 100.100.100.100 > > s=call > > c=IN IP4 100.100.100.100 > > t=0 0 > > m=audio 50012 RTP/AVP 8 101 > > a=rtpmap:8 PCMA/8000 > > a=rtpmap:101 telephone-event/8000 > > a=fmtp:101 0-15 > > a=ptime:20 > > a=sendrecv > > > > 2020-02-10 13:04:27.481 --> rcvd SIP FROM TCP 1 288 bytes > > SIP/2.0 100 Trying > > Via: SIP/2.0/TCP 100.100.100.100:5060;branch=z9hG4bKDGT5EGVPVDE4I146 > > From: > > <sip:+4987654321@100.100.100.100:5060;user=phone>;tag=C8UF20CAKNLTLJ18 > > To: <sip:+491234567@200.200.200.200:5060;user=phone> > > Call-ID: E4COR3MNVB8AK908 > > CSeq: 1 INVITE > > Content-Length: 0 > > > > > > 2020-02-10 13:04:28.473 --> rcvd SIP FROM TCP 1 729 bytes > > SIP/2.0 183 Session Progress > > Via: SIP/2.0/TCP 100.100.100.100:5060;branch=z9hG4bKDGT5EGVPVDE4I146 > > From: > > <sip:+4987654321@100.100.100.100:5060;user=phone>;tag=C8UF20CAKNLTLJ18 > > To: > > <sip:+491234567@200.200.200.200:5060;user=phone>;tag=SDuhhca99-6ossrg8l- > > CC-57 > > Call-ID: E4COR3MNVB8AK908 > > CSeq: 1 INVITE > > Contact: <sip:200.200.200.200:5060;transport=tcp> > > Allow: > > INVITE,ACK,OPTIONS,BYE,CANCEL,REGISTER,INFO,PRACK,SUBSCRIBE,NOTIFY,UPDATE, > > MESSAGE,REFER Content-Length: 223 > > Content-Type: application/sdp > > > > v=0 > > o=HuaweiSoftX3000 27670846 27670846 IN IP4 200.200.200.200 > > s=Sip Call > > c=IN IP4 200.200.200.200 > > t=0 0 > > m=audio 22978 RTP/AVP 8 101 > > a=rtpmap:8 PCMA/8000 > > a=rtpmap:101 telephone-event/8000 > > a=ptime:20 > > a=fmtp:101 0-15 > > > > 2020-02-10 13:04:29.421 --> rcvd SIP FROM TCP 1 720 bytes > > SIP/2.0 180 Ringing > > Via: SIP/2.0/TCP 100.100.100.100:5060;branch=z9hG4bKDGT5EGVPVDE4I146 > > From: > > <sip:+4987654321@100.100.100.100:5060;user=phone>;tag=C8UF20CAKNLTLJ18 > > To: > > <sip:+491234567@200.200.200.200:5060;user=phone>;tag=SDuhhca99-6ossrg8l- > > CC-57 > > Call-ID: E4COR3MNVB8AK908 > > CSeq: 1 INVITE > > Allow: > > INVITE,ACK,OPTIONS,BYE,CANCEL,REGISTER,INFO,PRACK,SUBSCRIBE,NOTIFY,UPDATE, > > MESSAGE,REFER Contact: <sip:200.200.200.200:5060;transport=tcp> > > Content-Length: 223 > > Content-Type: application/sdp > > > > v=0 > > o=HuaweiSoftX3000 27670846 27670847 IN IP4 200.200.200.200 > > s=Sip Call > > c=IN IP4 200.200.200.200 > > t=0 0 > > m=audio 22978 RTP/AVP 8 101 > > a=rtpmap:8 PCMA/8000 > > a=rtpmap:101 telephone-event/8000 > > a=ptime:20 > > a=fmtp:101 0-15 > > > > 2020-02-10 13:04:33.781 --> rcvd SIP FROM TCP 1 782 bytes > > SIP/2.0 200 OK > > Via: SIP/2.0/TCP 100.100.100.100:5060;branch=z9hG4bKDGT5EGVPVDE4I146 > > From: > > <sip:+4987654321@100.100.100.100:5060;user=phone>;tag=C8UF20CAKNLTLJ18 > > To: > > <sip:+491234567@200.200.200.200:5060;user=phone>;tag=SDuhhca99-6ossrg8l- > > CC-57 > > Call-ID: E4COR3MNVB8AK908 > > CSeq: 1 INVITE > > Allow: > > INVITE,ACK,OPTIONS,BYE,CANCEL,REGISTER,INFO,PRACK,SUBSCRIBE,NOTIFY,UPDATE, > > MESSAGE,REFER P-Asserted-Identity: > > <sip:491234567@100.100.100.100;user=phone> > > Contact: <sip:200.200.200.200:5060;transport=tcp> > > Content-Length: 223 > > Content-Type: application/sdp > > > > v=0 > > o=HuaweiSoftX3000 27670846 27670848 IN IP4 200.200.200.200 > > s=Sip Call > > c=IN IP4 200.200.200.200 > > t=0 0 > > m=audio 22978 RTP/AVP 8 101 > > a=rtpmap:8 PCMA/8000 > > a=rtpmap:101 telephone-event/8000 > > a=ptime:20 > > a=fmtp:101 0-15 > > > > 2020-02-10 13:04:33.782 <-- send SIP TO 200.200.200.200 440 bytes > > ACK sip:200.200.200.200:5060;transport=tcp SIP/2.0 > > Via: SIP/2.0/TCP 100.100.100.100:5060;branch=z9hG4bKTRLT5A2MP96ST762 > > From: > > <sip:+4987654321@100.100.100.100:5060;user=phone>;tag=C8UF20CAKNLTLJ18 > > To: > > <sip:+491234567@200.200.200.200:5060;user=phone>;tag=SDuhhca99-6ossrg8l- > > CC-57 > > Call-ID: E4COR3MNVB8AK908 > > CSeq: 1 ACK > > Contact: <sip:100.100.100.100:5060> > > Max-Forwards: 70 > > Allow: INVITE, ACK, CANCEL, OPTIONS, BYE > > Content-Length: 0 > > > > > > 2020-02-10 13:04:34.279 --> rcvd SIP FROM TCP 1 782 bytes > > SIP/2.0 200 OK > > Via: SIP/2.0/TCP 100.100.100.100:5060;branch=z9hG4bKDGT5EGVPVDE4I146 > > From: > > <sip:+4987654321@100.100.100.100:5060;user=phone>;tag=C8UF20CAKNLTLJ18 > > To: > > <sip:+491234567@200.200.200.200:5060;user=phone>;tag=SDuhhca99-6ossrg8l- > > CC-57 > > Call-ID: E4COR3MNVB8AK908 > > CSeq: 1 INVITE > > Allow: > > INVITE,ACK,OPTIONS,BYE,CANCEL,REGISTER,INFO,PRACK,SUBSCRIBE,NOTIFY,UPDATE, > > MESSAGE,REFER P-Asserted-Identity: > > <sip:491234567@100.100.100.100;user=phone> > > Contact: <sip:200.200.200.200:5060;transport=tcp> > > Content-Length: 223 > > Content-Type: application/sdp > > > > v=0 > > o=HuaweiSoftX3000 27670846 27670848 IN IP4 200.200.200.200 > > s=Sip Call > > c=IN IP4 200.200.200.200 > > t=0 0 > > m=audio 22978 RTP/AVP 8 101 > > a=rtpmap:8 PCMA/8000 > > a=rtpmap:101 telephone-event/8000 > > a=ptime:20 > > a=fmtp:101 0-15 > > > > > > > > _______________________________________________ > > Sip-implementors mailing list > > Sip-implementors@lists.cs.columbia.edu > > https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors > > _______________________________________________ > Sip-implementors mailing list > Sip-implementors@lists.cs.columbia.edu > https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors -- ------------------------------------------------------------ Dr. Peter Sties MEMICS AG Wilhelm-Weitling-Str. 53 D-81377 München Tel.: +49/89/2000 27 004 Fax : +49/89/2000 27 200 Mail: p.st...@memics.de Web : http://www.memics.de Sitz des Unternehmens: München Registergericht: Amtsgericht München HRB 156151 Vorstand: Dr. Peter Sties Vorsitzender des Aufsichtsrates: Jochen Sties _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
