[SR-Users] Kamailio Question

Brian Longwell Fri, 26 Oct 2018 00:10:24 -0700

I'm trying to setup a simple proxy with NAT/RTPproxy.  I have started with the 
basic cfg file and added nat and forced rtpproxy.



The proxy is to reside in between endpoints and multiple SIP servers.  
Currently calls from endpoints are working great but my issue is calls from the 
server to the endpoint.  The SIP messages are good until the 200 OK sent from 
the phone back, Kamailio is not fixing the contact so it's sending the private 
IP of the phone back to the server so all subsequent traffic is attempting to 
route to the private IP.  I have tried using the fix_nated_contact everywhere I 
could think but still no difference.

Attached is sip capture and the kamailio.cfg i'm currently using.

Thank you,

Brian

Sanitized info:
        Phone public- 150.0.0.1
        PBX public- 198.0.0.1
        Kamailio Public- 99.0.0.1
        Call was from 7555555555

INVITE sip:3145@150.0.0.1:5060 SIP/2.0
Record-Route: <sip:99.0.0.1:5065;lr=on>
Via: SIP/2.0/UDP 
99.0.0.1:5065;branch=z9hG4bK9dc3.cb2627aae4c1ca35ff4995c534ad8080.0
Via: SIP/2.0/UDP 
198.0.0.1:5060;received=198.0.0.1;branch=z9hG4bK-524287-1---96dbe6462276ff2e;rport=5060
Max-Forwards: 69
Contact: <sip:7555555555@198.0.0.1:5060>
To: <sip:3...@sipvendor-cloudpbx.sipvendor.net>
From: ":Extra Numbers"<sip:7555555555@198.0.0.1:5060;nf=e>;tag=b015873c
Call-ID: dYkdLrrbuP18hRc8d6y8iA..
CSeq: 1 INVITE
Alert-Info: <http://www.notused.invalidtld>;info=external
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY, REFER, 
INFO, MESSAGE, UPDATE
Content-Type: application/sdp
Supported: replaces, timer
User-Agent: 3CXPhoneSystem 15.5.15502.6 (15502)
Content-Length: 425
P-hint: outbound

v=0
o=3cxPS 11142950780141568 33067355999305729 IN IP4 198.0.0.1
s=3cxPS Audio call
c=IN IP4 198.0.0.1
t=0 0
m=audio 8320 RTP/AVP 0 8 9 3 18 112 101
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:9 G722/8000
a=rtpmap:3 GSM/8000
a=rtpmap:18 G729/8000
a=fmtp:18 annexb=no
a=rtpmap:112 opus/48000/2
a=fmtp:112 maxplaybackrate=16000;sprop-maxcapturerate=16000
a=rtpmap:101 telephone-event/8000
a=sendrecv
SIP/2.0 100 Trying
Via: SIP/2.0/UDP 
99.0.0.1:5065;branch=z9hG4bK9dc3.cb2627aae4c1ca35ff4995c534ad8080.0
Via: SIP/2.0/UDP 
198.0.0.1:5060;received=198.0.0.1;branch=z9hG4bK-524287-1---96dbe6462276ff2e;rport=5060
From: ":Extra Numbers" <sip:7555555555@198.0.0.1:5060;nf=e>;tag=b015873c
To: <sip:3...@sipvendor-cloudpbx.sipvendor.net>
Call-ID: dYkdLrrbuP18hRc8d6y8iA..
CSeq: 1 INVITE
User-Agent: Yealink SIP-T46S 66.83.0.20 805ec02194db
Content-Length: 0

SIP/2.0 180 Ringing
Via: SIP/2.0/UDP 
99.0.0.1:5065;branch=z9hG4bK9dc3.cb2627aae4c1ca35ff4995c534ad8080.0
Via: SIP/2.0/UDP 
198.0.0.1:5060;received=198.0.0.1;branch=z9hG4bK-524287-1---96dbe6462276ff2e;rport=5060
Record-Route: <sip:99.0.0.1:5065;lr=on>
From: ":Extra Numbers" <sip:7555555555@198.0.0.1:5060;nf=e>;tag=b015873c
To: <sip:3...@sipvendor-cloudpbx.sipvendor.net>;tag=812445237
Call-ID: dYkdLrrbuP18hRc8d6y8iA..
CSeq: 1 INVITE
Contact: <sip:3145@10.10.8.96:5060>
Allow: INVITE, INFO, PRACK, ACK, BYE, CANCEL, OPTIONS, NOTIFY, REGISTER, 
SUBSCRIBE, REFER, PUBLISH, UPDATE, MESSAGE
User-Agent: Yealink SIP-T46S 66.83.0.20 805ec02194db
Allow-Events: talk,hold,conference,refer,check-sync
Content-Length: 0

INFO sip:3145@198.0.0.1:5060 SIP/2.0
Via: SIP/2.0/UDP 10.10.8.96:5060;branch=z9hG4bK2102060417
Route: <sip:99.0.0.1:5065;lr=on>
From: <sip:3145@150.0.0.1:5060>;tag=1656825630
To: <sip:3...@sipvendor-cloudpbx.sipvendor.net>;tag=7a9f4963
Call-ID: wm97Nz_03L-LgEgqzWac1Q..
CSeq: 13 INFO
Contact: <sip:3145@10.10.8.96:5060>
Content-Type: application/csta+xml
Allow: INVITE, INFO, PRACK, ACK, BYE, CANCEL, OPTIONS, NOTIFY, REGISTER, 
SUBSCRIBE, REFER, PUBLISH, UPDATE, MESSAGE
Max-Forwards: 70
User-Agent: Yealink SIP-T46S 66.83.0.20 805ec02194db
Content-disposition: signal;handling=required
Content-Length: 783

<?xml version="1.0" encoding="utf-8"?>
<DeliveredEvent 
xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5";>
        <monitorCrossRefID>0</monitorCrossRefID>
        <connection>
                <callID>33987</callID>
                
<deviceID>sip:3...@sipvendor-cloudpbx.sipvendor.net:5060</deviceID>
        </connection>
        <alertingDevice>
                
<deviceIdentifier>sip:3...@sipvendor-cloudpbx.sipvendor.net:5060</deviceIdentifier>
        </alertingDevice>
        <callingDevice>
                <deviceIdentifier>sip:7555555555@198.0.0.1</deviceIdentifier>
        </callingDevice>
        <calledDevice>
                
<deviceIdentifier>sip:3...@sipvendor-cloudpbx.sipvendor.net:5060</deviceIdentifier>
        </calledDevice>
        <lastRedirectionDevice>
                <notKnown />
        </lastRedirectionDevice>
        <localConnectionInfo>alerting</localConnectionInfo>
        <cause>normal</cause>
</DeliveredEvent>
SIP/2.0 200 OK
Via: SIP/2.0/UDP 
10.10.8.96:5060;rport=5060;received=150.0.0.1;branch=z9hG4bK2102060417
Contact: <sip:3145@198.0.0.1:5060>
To: <sip:3...@sipvendor-cloudpbx.sipvendor.net>;tag=7a9f4963
From: <sip:3145@150.0.0.1:5060>;tag=1656825630
Call-ID: wm97Nz_03L-LgEgqzWac1Q..
CSeq: 13 INFO
User-Agent: 3CXPhoneSystem 15.5.15502.6 (15502)
Content-Length: 0

SIP/2.0 200 OK
Via: SIP/2.0/UDP 
99.0.0.1:5065;branch=z9hG4bK9dc3.cb2627aae4c1ca35ff4995c534ad8080.0
Via: SIP/2.0/UDP 
198.0.0.1:5060;received=198.0.0.1;branch=z9hG4bK-524287-1---96dbe6462276ff2e;rport=5060
Record-Route: <sip:99.0.0.1:5065;lr=on>
From: ":Extra Numbers" <sip:7555555555@198.0.0.1:5060;nf=e>;tag=b015873c
To: <sip:3...@sipvendor-cloudpbx.sipvendor.net>;tag=812445237
Call-ID: dYkdLrrbuP18hRc8d6y8iA..
CSeq: 1 INVITE
Contact: <sip:3145@10.10.8.96:5060>
Content-Type: application/sdp
Allow: INVITE, INFO, PRACK, ACK, BYE, CANCEL, OPTIONS, NOTIFY, REGISTER, 
SUBSCRIBE, REFER, PUBLISH, UPDATE, MESSAGE
User-Agent: Yealink SIP-T46S 66.83.0.20 805ec02194db
Allow-Events: talk,hold,conference,refer,check-sync
Content-Length: 207

v=0
o=- 20108 20108 IN IP4 10.10.8.96
s=SDP data
c=IN IP4 10.10.8.96
t=0 0
m=audio 12252 RTP/AVP 0 101
a=rtpmap:0 PCMU/8000
a=ptime:20
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=sendrecv
INFO sip:3145@198.0.0.1:5060 SIP/2.0
Via: SIP/2.0/UDP 10.10.8.96:5060;branch=z9hG4bK769324178
Route: <sip:99.0.0.1:5065;lr=on>
From: <sip:3145@150.0.0.1:5060>;tag=1656825630
To: <sip:3...@sipvendor-cloudpbx.sipvendor.net>;tag=7a9f4963
Call-ID: wm97Nz_03L-LgEgqzWac1Q..
CSeq: 14 INFO
Contact: <sip:3145@10.10.8.96:5060>
Content-Type: application/csta+xml
Allow: INVITE, INFO, PRACK, ACK, BYE, CANCEL, OPTIONS, NOTIFY, REGISTER, 
SUBSCRIBE, REFER, PUBLISH, UPDATE, MESSAGE
Max-Forwards: 70
User-Agent: Yealink SIP-T46S 66.83.0.20 805ec02194db
Content-disposition: signal;handling=required
Content-Length: 812

<?xml version="1.0" encoding="utf-8"?>
<EstablishedEvent 
xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5";>
        <monitorCrossRefID>0</monitorCrossRefID>
        <establishedConnection>
                <callID>33987</callID>
                
<deviceID>sip:3...@sipvendor-cloudpbx.sipvendor.net:5060</deviceID>
        </establishedConnection>
        <answeringDevice>
                
<deviceIdentifier>sip:3...@sipvendor-cloudpbx.sipvendor.net:5060</deviceIdentifier>
        </answeringDevice>
        <callingDevice>
                <deviceIdentifier>sip:7555555555@198.0.0.1</deviceIdentifier>
        </callingDevice>
        <calledDevice>
                
<deviceIdentifier>sip:3...@sipvendor-cloudpbx.sipvendor.net:5060</deviceIdentifier>
        </calledDevice>
        <lastRedirectionDevice>
                <notKnown />
        </lastRedirectionDevice>
        <localConnectionInfo>connected</localConnectionInfo>
        <cause>normal</cause>
</EstablishedEvent>
SIP/2.0 200 OK
Via: SIP/2.0/UDP 
10.10.8.96:5060;rport=5060;received=150.0.0.1;branch=z9hG4bK769324178
Contact: <sip:3145@198.0.0.1:5060>
To: <sip:3...@sipvendor-cloudpbx.sipvendor.net>;tag=7a9f4963
From: <sip:3145@150.0.0.1:5060>;tag=1656825630
Call-ID: wm97Nz_03L-LgEgqzWac1Q..
CSeq: 14 INFO
User-Agent: 3CXPhoneSystem 15.5.15502.6 (15502)
Content-Length: 0

SIP/2.0 200 OK
Via: SIP/2.0/UDP 
99.0.0.1:5065;branch=z9hG4bK9dc3.cb2627aae4c1ca35ff4995c534ad8080.0
Via: SIP/2.0/UDP 
198.0.0.1:5060;received=198.0.0.1;branch=z9hG4bK-524287-1---96dbe6462276ff2e;rport=5060
Record-Route: <sip:99.0.0.1:5065;lr=on>
From: ":Extra Numbers" <sip:7555555555@198.0.0.1:5060;nf=e>;tag=b015873c
To: <sip:3...@sipvendor-cloudpbx.sipvendor.net>;tag=812445237
Call-ID: dYkdLrrbuP18hRc8d6y8iA..
CSeq: 1 INVITE
Contact: <sip:3145@10.10.8.96:5060>
Content-Type: application/sdp
Allow: INVITE, INFO, PRACK, ACK, BYE, CANCEL, OPTIONS, NOTIFY, REGISTER, 
SUBSCRIBE, REFER, PUBLISH, UPDATE, MESSAGE
User-Agent: Yealink SIP-T46S 66.83.0.20 805ec02194db
Allow-Events: talk,hold,conference,refer,check-sync
Content-Length: 207

v=0
o=- 20108 20108 IN IP4 10.10.8.96
s=SDP data
c=IN IP4 10.10.8.96
t=0 0
m=audio 12252 RTP/AVP 0 101
a=rtpmap:0 PCMU/8000
a=ptime:20
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=sendrecv
SIP/2.0 200 OK
Via: SIP/2.0/UDP 
99.0.0.1:5065;branch=z9hG4bK9dc3.cb2627aae4c1ca35ff4995c534ad8080.0
Via: SIP/2.0/UDP 
198.0.0.1:5060;received=198.0.0.1;branch=z9hG4bK-524287-1---96dbe6462276ff2e;rport=5060
Record-Route: <sip:99.0.0.1:5065;lr=on>
From: ":Extra Numbers" <sip:7555555555@198.0.0.1:5060;nf=e>;tag=b015873c
To: <sip:3...@sipvendor-cloudpbx.sipvendor.net>;tag=812445237
Call-ID: dYkdLrrbuP18hRc8d6y8iA..
CSeq: 1 INVITE
Contact: <sip:3145@10.10.8.96:5060>
Content-Type: application/sdp
Allow: INVITE, INFO, PRACK, ACK, BYE, CANCEL, OPTIONS, NOTIFY, REGISTER, 
SUBSCRIBE, REFER, PUBLISH, UPDATE, MESSAGE
User-Agent: Yealink SIP-T46S 66.83.0.20 805ec02194db
Allow-Events: talk,hold,conference,refer,check-sync
Content-Length: 207

v=0
o=- 20108 20108 IN IP4 10.10.8.96
s=SDP data
c=IN IP4 10.10.8.96
t=0 0
m=audio 12252 RTP/AVP 0 101
a=rtpmap:0 PCMU/8000
a=ptime:20
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=sendrecv
BYE sip:7555555555@198.0.0.1:5060 SIP/2.0
Via: SIP/2.0/UDP 10.10.8.96:5060;branch=z9hG4bK143243009
Route: <sip:99.0.0.1:5065;lr=on>
From: <sip:3...@sipvendor-cloudpbx.sipvendor.net>;tag=812445237
To: ":Extra Numbers" <sip:7555555555@198.0.0.1:5060;nf=e>;tag=b015873c
Call-ID: dYkdLrrbuP18hRc8d6y8iA..
CSeq: 2 BYE
Contact: <sip:3145@10.10.8.96:5060>
Max-Forwards: 70
User-Agent: Yealink SIP-T46S 66.83.0.20 805ec02194db
Content-Length: 0

INFO sip:3145@198.0.0.1:5060 SIP/2.0
Via: SIP/2.0/UDP 10.10.8.96:5060;branch=z9hG4bK74261630
Route: <sip:99.0.0.1:5065;lr=on>
From: <sip:3145@150.0.0.1:5060>;tag=1656825630
To: <sip:3...@sipvendor-cloudpbx.sipvendor.net>;tag=7a9f4963
Call-ID: wm97Nz_03L-LgEgqzWac1Q..
CSeq: 15 INFO
Contact: <sip:3145@10.10.8.96:5060>
Content-Type: application/csta+xml
Allow: INVITE, INFO, PRACK, ACK, BYE, CANCEL, OPTIONS, NOTIFY, REGISTER, 
SUBSCRIBE, REFER, PUBLISH, UPDATE, MESSAGE
Max-Forwards: 70
User-Agent: Yealink SIP-T46S 66.83.0.20 805ec02194db
Content-disposition: signal;handling=required
Content-Length: 537

<?xml version="1.0" encoding="utf-8"?>
<ConnectionClearedEvent 
xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5";>
        <monitorCrossRefID>0</monitorCrossRefID>
        <droppedConnection>
                <callID>33987</callID>
                
<deviceID>sip:3...@sipvendor-cloudpbx.sipvendor.net:5060</deviceID>
        </droppedConnection>
        <releasingDevice>
                
<deviceIdentifier>sip:3...@sipvendor-cloudpbx.sipvendor.net:5060</deviceIdentifier>
        </releasingDevice>
        <localConnectionInfo>null</localConnectionInfo>
        <cause>normalClearing</cause>
</ConnectionClearedEvent>
SIP/2.0 200 OK
Via: SIP/2.0/UDP 
10.10.8.96:5060;rport=5060;received=150.0.0.1;branch=z9hG4bK143243009
Contact: <sip:7555555555@198.0.0.1:5060>
To: ":Extra Numbers"<sip:7555555555@198.0.0.1:5060;nf=e>;tag=b015873c
From: <sip:3...@sipvendor-cloudpbx.sipvendor.net>;tag=812445237
Call-ID: dYkdLrrbuP18hRc8d6y8iA..
CSeq: 2 BYE
User-Agent: 3CXPhoneSystem 15.5.15502.6 (15502)
Content-Length: 0

SIP/2.0 200 OK
Via: SIP/2.0/UDP 
10.10.8.96:5060;rport=5060;received=150.0.0.1;branch=z9hG4bK74261630
Contact: <sip:3145@198.0.0.1:5060>
To: <sip:3...@sipvendor-cloudpbx.sipvendor.net>;tag=7a9f4963
From: <sip:3145@150.0.0.1:5060>;tag=1656825630
Call-ID: wm97Nz_03L-LgEgqzWac1Q..
CSeq: 15 INFO
User-Agent: 3CXPhoneSystem 15.5.15502.6 (15502)
Content-Length: 0

kamailio.cfg
Description: kamailio.cfg

_______________________________________________
Kamailio (SER) - Users Mailing List
sr-users@lists.kamailio.org
https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

[SR-Users] Kamailio Question

Reply via email to