[Spce-user] NGCP 2.6 - mis-routed replys after 180 ringing

Fri Oct 5 16:11:30 EDT 2012

Hi Andrew,

I have sended the PCAP-File dirercly to your Email-account.
When I see it right the ports in the contact header fields from T38Modem are the same as the sending ports.

I don’t know what is wrong ....

I have made an other test: Relaying the calls from T38Modem over an Asterisk, there are no misrouted packets. 2 from 5 faxes are sended without any errors. But this is no solution because asterisk (1.4) dont make T38 passthrougt with fallback to G711 right.
My target is to build up a fax solution which is transparent for ngcp and handled as a normal SIP-CPE, so that no patches in the kamailio scripts are nessesary.

Klaus Peter

> -----Ursprüngliche Nachricht-----
> Von: Andrew Pogrebennyk [mailto:apogrebennyk at sipwise.com]
> Gesendet: Freitag, 5. Oktober 2012 15:14
> An: Klaus Peter v. Friedeburg
> Cc: spce-user at lists.sipwise.com
> Betreff: Re: [Spce-user] NGCP 2.6 - mis-routed replys after 180 ringing
> 
> Hi Klaus,
> 
> Maybe a full trace for the failed case including replies and ACK and
> port numbers would help, I just don't see the port information in this one.
> 
> The problem I've had with T38modem is it was sending the request from
> different port than it puts into Contact and Via, but the log says ACK
> is incorrect so we need to check Record-Routing and RURI in the ACK too.
> 
> On 10/05/2012 03:06 PM, Klaus Peter v. Friedeburg wrote:
> > Hi,
> >
> > I have problems with mis-routed replys in NGCP 2.6:
> >
> > This is an initial Invite that works:
> > *******************************************************************
> > INVITE sip:9830355 at sip-test.aco-connect.de SIP/2.0
> > Date: Fri, 05 Oct 2012 12:05:51 GMT
> > CSeq: 2 INVITE
> > Via: SIP/2.0/UDP 81.90.192.217:25614;branch=z9hG4bKdc6301ad-520d-e211-9999-000c296dbef0;rport
> > User-Agent: T38Modem/1.2.0
> > From: "root" <sip:004956199797437 at sip-test.aco-connect.de>;tag=a061f9ac-520d-e211-9999-000c296dbef0
> > Call-ID: 3270f9ac-520d-e211-9999-000c296dbef0 at fax2fax-test.aco-connect.de
> > Organization: Vyacheslav Frolov
> > To: <sip:9830355 at sip-test.aco-connect.de>
> > Contact: <sip:004956199797437 at 81.90.192.217:25614>
> > Proxy-Authorization: Digest username="004956199797437", realm="sip-test.aco-connect.de",
> nonce="xxxxxxxxx", uri="sip:9830355 at sip-test.aco-connect.de", algorithm=MD5, response="xxxxxxxxxx"
> > Allow: INVITE,ACK,OPTIONS,BYE,CANCEL,SUBSCRIBE,NOTIFY,REFER,MESSAGE,INFO,PING
> > Content-Type: application/sdp
> > Content-Length: 264
> > Max-Forwards: 70
> >
> > v=0
> > o=- 1349438751 1 IN IP4 81.90.192.217
> > s=Opal SIP Session
> > c=IN IP4 81.90.192.217
> > t=0 0
> > m=audio 5000 RTP/AVP 8 101 100
> > a=sendrecv
> > a=rtpmap:8 PCMA/8000/1
> > a=rtpmap:101 telephone-event/8000
> > a=fmtp:101 0-16,32,36
> > a=rtpmap:100 NSE/8000
> > a=fmtp:100 192-193
> > *******************************************************************
> >
> > This is an other initial Invite from the same machine that does not work!
> > *******************************************************************
> > INVITE sip:9830355 at sip-test.aco-connect.de SIP/2.0
> > CSeq: 2 INVITE
> > Via: SIP/2.0/UDP 81.90.192.217:32770;branch=z9hG4bK50a6fce0-580d-e211-964b-000c296dbef0;rport
> > User-Agent: T38Modem/2.0.0
> > From: "root" <sip:004956199797437 at sip-test.aco-connect.de>;tag=707ff4e0-580d-e211-964b-000c296dbef0
> > Call-ID: e087f4e0-580d-e211-964b-000c296dbef0 at fax2fax-test.aco-connect.de
> > Organization: Vyacheslav Frolov
> > To: <sip:9830355 at sip-test.aco-connect.de>
> > Contact: <sip:004956199797437 at 81.90.192.217:32770>
> > Proxy-Authorization: Digest username="004956199797437", realm="sip-test.aco-connect.de", nonce="
> xxxxxxxxx", uri="sip:9830355 at sip-test.aco-connect.de", algorithm=MD5, response=" xxxxxxxxx"
> > Allow: INVITE,ACK,OPTIONS,BYE,CANCEL,SUBSCRIBE,NOTIFY,REFER,MESSAGE,INFO,PING
> > Content-Type: application/sdp
> > Content-Length: 231
> > Max-Forwards: 70
> >
> > v=0
> > o=- 1349441415 1 IN IP4 81.90.192.217
> > s=T38Modem/2.0.0
> > c=IN IP4 81.90.192.217
> > t=0 0
> > m=audio 5000 RTP/AVP 8 101
> > a=sendrecv
> > a=rtpmap:8 PCMA/8000/1
> > a=rtpmap:101 telephone-event/8000
> > a=fmtp:101 0-16,32,36
> > a=maxptime:240
> > *******************************************************************
> >
> > The kamailio-proxy log show this:
> > *******************************************************************
> > Oct  5 14:50:15 sip3 /usr/sbin/kamailio[2436]: INFO: <script>: Appending P-D-URI
> 'sip:192.168.100.55:5060;received='sip:62.180.237.70:5060;transport=udp'' - R=sip:4
> > 95619830355 at 62.180.237.70:5060;transport=udp ID=e087f4e0-580d-e211-964b-000c296dbef0 at fax2fax-
> test.aco-connect.de
> > Oct  5 14:50:15 sip3 /usr/sbin/kamailio[2436]: INFO: <script>: Forcing request via B2BUA
> 'sip:192.168.100.55:5080' - R=sip:495619830355 at 62.180.237.70:5060;transport
> > =udp ID=e087f4e0-580d-e211-964b-000c296dbef0 at fax2fax-test.aco-connect.de
> > Oct  5 14:50:15 sip3 /usr/sbin/kamailio[2436]: INFO: <script>: Setting P-Caller-UUID to '18205f5a-cfe6-49fc-
> 9937-0a64d090498b' - R=sip:495619830355 at 62.180.237.70:50
> > 60;transport=udp ID=e087f4e0-580d-e211-964b-000c296dbef0 at fax2fax-test.aco-connect.de
> > Oct  5 14:50:15 sip3 /usr/sbin/kamailio[2436]: INFO: <script>: Setting P-Callee-UUID to '0' -
> R=sip:495619830355 at 62.180.237.70:5060;transport=udp ID=e087f4e0-580d-e
> > 211-964b-000c296dbef0 at fax2fax-test.aco-connect.de
> > Oct  5 14:50:15 sip3 /usr/sbin/kamailio[2436]: INFO: <script>: Request leaving server, D-
> URI='sip:192.168.100.55:5080' - R=sip:495619830355 at 62.180.237.70:5060;trans
> > port=udp ID=e087f4e0-580d-e211-964b-000c296dbef0 at fax2fax-test.aco-connect.de
> > Oct  5 14:50:15 sip3 /usr/sbin/kamailio[2439]: INFO: <script>: NAT-Reply - S=100 - Connecting M=INVITE
> IP=81.90.192.217:32770 (192.168.100.55:5080) ID=e087f4e0-580d
> > -e211-964b-000c296dbef0 at fax2fax-test.aco-connect.de
> > Oct  5 14:50:18 sip3 /usr/sbin/kamailio[2428]: INFO: <script>: NAT-Reply - S=180 - Ringing M=INVITE
> IP=81.90.192.217:32770 (192.168.100.55:5080) ID=e087f4e0-580d-e2
> > 11-964b-000c296dbef0 at fax2fax-test.aco-connect.de
> > Oct  5 14:50:23 sip3 /usr/sbin/kamailio[2444]: INFO: <script>: NAT-Reply - S=200 - OK M=INVITE
> IP=81.90.192.217:32770 (192.168.100.55:5080) ID=e087f4e0-580d-e211-96
> > 4b-000c296dbef0 at fax2fax-test.aco-connect.de
> > Oct  5 14:50:23 sip3 /usr/sbin/kamailio[2448]: INFO: <script>: New request - M=ACK R=sip:9830355 at sip-
> test.aco-connect.de F=sip:004956199797437 at sip-test.aco-connect.
> > de T=sip:9830355 at sip-test.aco-connect.de IP=81.90.192.217:32770 (192.168.100.55:5060) ID=e087f4e0-
> 580d-e211-964b-000c296dbef0 at fax2fax-test.aco-connect.de
> > Oct  5 14:50:23 sip3 /usr/sbin/kamailio[2448]: INFO: <script>: Relaying request, du='<null>' -
> R=sip:9830355 at sip-test.aco-connect.de ID=e087f4e0-580d-e211-964b-000c
> > 296dbef0 at fax2fax-test.aco-connect.de
> > Oct  5 14:50:23 sip3 /usr/sbin/kamailio[2442]: INFO: <script>: New request - M=ACK R=sip:9830355 at sip-
> test.aco-connect.de F=sip:056199797437 at sip-test.aco-connect.de
> > T=sip:9830355 at sip-test.aco-connect.de IP=81.90.192.214:5060 (192.168.100.55:5060) ID=e087f4e0-580d-
> e211-964b-000c296dbef0 at fax2fax-test.aco-connect.de
> > Oct  5 14:50:23 sip3 /usr/sbin/kamailio[2442]: INFO: <script>: Dropping mis-routed request -
> R=sip:9830355 at sip-test.aco-connect.de ID=e087f4e0-580d-e211-964b-000c29
> > 6dbef0 at fax2fax-test.aco-connect.de
> > *******************************************************************
> >
> > Nothing in sems log!
> >
> > The differences are in the SDP body
> > But what is wrong?????
> >
> >
> > _______________________________________________
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> >