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I have 2 PBX setup with (Linux) and when I call from 1st PBX to the 2nd PBX Thu a 3rd party the calls fail


Is there a way to change what the PBX should send or a way to get the PBX to except that invite?


Below are 3 call traces



I think that the invite message is not working





On the pbx it shows

[5] 2010/04/15 18:02:38: Received incoming call without trunk information and user has not been found


Please advise





U 2010/04/15 21:37:44.629126 ->

INVITE sip:5184441212@;user=phone SIP/2.0..Record-Route: <si

p:15184441212@;nat=yes;ftag=1132153492;lr=on>..Via: SIP/2

.0/UDP;branch=z9hG4bK5838.1e43bd02.0..v: SIP/2.0/UDP;branch=z9hG4bK-b54847acbaf80a8b4f411bc4c398aa8f;rport=506

0..f: <sip:Testnet@>;tag=1132153492..t: <sip:15184441212@66.

23.129.250;user=phone>..i: 1d7e6a73@pbx..CSeq: 7638 INVITE..Max-Forwards: 1

6..m: <sip:Testnet@;transport=udp>..Supported: 100rel

, replaces, norefersub..Allow-Events: refer..Allow: INVITE, ACK, CANCEL, BY

E, REFER, PRACK, INFO, UPDATE..Accept: application/sdp..User-Agent: Test-

pbx/ "hello test" <sip:15182323675@

0;user=phone>;party=calling;screen=yes..c: application/sdp..l: 460....v=0..

o=- 1571734621 1571734621 IN IP4 IP4 173.203.141

.235..t=0 0..m=audio 59574 RTP/AVP 0 8 9 18 2 3 101..a=rtpmap:0 pcmu/8000..

a=rtpmap:8 pcma/8000..a=rtpmap:9 g722/8000..a=rtpmap:18 g729/8000..a=fmtp:1

8 annexb=no..a=rtpmap:2 g726-32/8000..a=rtpmap:3 gsm/8000..a=rtpmap:101 tel

ephone-event/8000..a=fmtp:101 0-16..a=rtcp-xr:pkt-loss-rle pkt-dup-rle pkt-

rcpt-times rcvr-rtt=sender stat-summary=loss,dup,jitt voip-metrics..a=sendr





U 2010/04/15 21:44:39.486648 ->

INVITE sip:5184441212@ SIP/2.0..Record-Route: <sip:+15184441

212@;nat=yes;ftag=gK0b6aa1e6;lr=on>..Via: SIP/2.0/UDP 66.

23.129.253:5060;branch=z9hG4bK33f5.ca589696.0..Via: SIP/2.0/UDP :

5060;branch=z9hG4bK0bB38b50b3acf3c2c80..From: "hello test" <sip:+1212344486

6@:5060>;tag=gK0b6aa1e6..To: <sip:+15184441212@

>..Call-ID: 2014037460_81379626@..CSeq: 22842 INVITE..Max-Forward

s: 16..Allow: INVITE,ACK,CANCEL,BYE,PRACK,UPDATE..Accept: application/sdp,

application/isup, application/dtmf, application/dtmf-relay, multipart/mixe

d..Contact: "hello test" <sip:+15182323675@:5060>..Remote-Party-I

D: "hello test" <sip:+15182323675@:5060>;privacy=off..Supported:

100rel..Content-Length: 302..Content-Disposition: session; handling=option

al..Content-Type: application/sdp....v=0..o=Sonus_UAC 19978 7401 IN IP4 4.5

5.5.163..s=SIP Media Capabilities..c=IN IP4 0..m=audio 1222

2 RTP/AVP 0 8 18 101..a=rtpmap:0 PCMU/8000..a=rtpmap:8 PCMA/8000..a=rtpmap:

18 G729/8000..a=fmtp:18 annexb=no..a=rtpmap:101 telephone-event/8000..a=fmt

p:101 0-15..a=sendrecv..a=maxptime:20..





U 2010/04/15 21:44:17.787501 ->

INVITE sip:5184441212@ SIP/2.0..Record-Route: <sip:151844412


66;lr=on>..Via: SIP/2.0/UDP;branch=z9hG4bK5bb4.5369c037.

0..Via: SIP/2.0/UDP;branch=z9hG4bK1703546294-1066..Max-F


,REFER,MESSAGE,PRACK..Zultys-Data: mx_call_id=100.44;..User-Agent: Zultys M

X250 v5.2.10 build 1..From: "7034392702" <sip:5184392702@hq.test.com>;

tag=615-zultys--10359999711066_1703381798-1066..To: sip:15184441212@66.23.1

29.253..Call-ID: 1703381373-1066..CSeq: 2 INVITE..Contact: sip:5184392702@6 application/sdp..Supported: 100rel..Conten

t-Length: 268..Remote-Party-ID: <sip:5184392702@test.com>;party=callin

g;screen=no;privacy=off....v=0..o=MX250-5.2.10-1 1271367857 0 IN IP4 66.23.

136.140..s=-..c=IN IP4 0..m=audio 21114 RTP/AVP 0 8 18 1

01..a=rtpmap:0 PCMU/8000/1..a=rtpmap:8 PCMA/8000/1..a=rtpmap:18 G729/8000/1

..a=fmtp:18 annexb=no..a=rtpmap:101 telephone-event/8000..a=ptime:20..

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Is there a way to change what the PBX should send or a way to get the PBX to except that invite?


Well the SIP messages look like sphagetti in this port, very hard to read.


You should also pay attention to the messages in the log about identifiying trunks. In the cases that you send traffic from one PBX to the other, there are subtle cases when the PBX believes the call does not call from a trunk, but a local user. Especially when the user names overlap that is a common problem.

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