[SR-Users] Kazoo like load balancing

Wed Jul 22 17:43:45 CEST 2015

Hi Daniel,

First of all, thank you for your help!

Below you can find more detailed info:

I have following infrastructure:

22 at 10.50.210.9:6574 - UAC
11 at 10.50.210.9:50365 - UAC

10.101.237.133 - Loadbalancer Kamailio
10.101.241.55 - Kamailio Proxy, where UACs are registered

So this is how Invite travels

Invite (1)22 at 10.50.210.9:6574 => 10.101.237.133 - Loadbalancer
Invite (2)10.101.237.133 - Loadbalancer => 10.101.241.55 - Kamailio Proxy
Invite (3)10.101.241.55 - Kamailio Proxy => 10.101.237.133 - Loadbalancer
Invite (4)10.101.237.133 - Loadbalancer => 10.101.241.55 - Kamailio Proxy
407 Error (5)10.101.241.55 - Kamailio Proxy => 10.101.237.133 -
Loadbalancer

So invite get stuck at LB 10.101.237.133, it should send invite to
11 at 10.50.210.9:50365 at step (4) but it sends to Proxy back instead. After
this proxy replies with 407 error.

Please find full SIP trace in attachment.

Thank you!

With kind regards,

Jurijs

2015-07-21 19:18 GMT+03:00 Daniel Tryba <d.tryba at pocos.nl>:

> On Tuesday 21 July 2015 17:59:53 Jurijs Ivolga wrote:
> > So basically extension 100 sends invite to LB, LB then send invite to
> > Kamailio server and Kamailio server replies with 407 error.
> >
> > Do you have any ideas why?
>
> No, you'll have to debug this the usual way. Run kamailio at a highe debug
> level to see what it is doing and log queries to the database. You'll have
> to
> make captures to see how the flow op sip messages is and who is requiring
> authentication.
>
> > Maybe you can give me more details about config on Kamailio server behind
> > LB?
>
> The config is equal to standard in this regard. Show us your config for the
> backend regarding authentication and registration.
>
> _______________________________________________
> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
> sr-users at lists.sip-router.org
> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>
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#
U 2015/07/22 10:46:19.362379 10.50.210.9:6574 -> 10.101.237.133:5060
INVITE sip:11 at voipdev.mydomain.net SIP/2.0.
Via: SIP/2.0/UDP 192.168.5.148:55529;branch=z9hG4bK.Lp01Vj8qs;rport.
From: <sip:22 at voipdev.mydomain.net>;tag=AZWk8e87s.
To: sip:11 at voipdev.mydomain.net.
CSeq: 20 INVITE.
Call-ID: LJoKbYM0YY.
Max-Forwards: 70.
Supported: outbound.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE, SUBSCRIBE, INFO, UPDATE.
Content-Type: application/sdp.
Content-Length: 557.
Contact: <sip:22 at 10.50.210.9:6574>;+sip.instance="<urn:uuid:c1c7dbe5-7dac-4d3f-a496-af9fde38a0e7>".
User-Agent: LinphoneAndroid/2.4.1 (belle-sip/1.4.1).
.
v=0.
o=22 4026 1869 IN IP4 192.168.5.148.
s=Talk.
c=IN IP4 192.168.5.148.
b=AS:380.
t=0 0.
a=rtcp-xr:rcvr-rtt=all:10000 stat-summary=loss,dup,jitt,TTL voip-metrics.
m=audio 7076 RTP/AVP 96 97 98 99 0 8 101 100 102.
a=rtpmap:96 opus/48000/2.
a=fmtp:96 useinbandfec=1; stereo=0; sprop-stereo=0.
a=rtpmap:97 SILK/16000.
a=rtpmap:98 speex/16000.
a=fmtp:98 vbr=on.
a=rtpmap:99 speex/8000.
a=fmtp:99 vbr=on.
a=rtpmap:101 telephone-event/48000.
a=rtpmap:100 telephone-event/16000.
a=rtpmap:102 telephone-event/8000.
m=video 9078 RTP/AVP 96.
a=rtpmap:96 VP8/90000.

#
U 2015/07/22 10:46:19.364240 10.101.237.133:5060 -> 10.50.210.9:6574
SIP/2.0 100 trying -- your call is important to us.
Via: SIP/2.0/UDP 192.168.5.148:55529;branch=z9hG4bK.Lp01Vj8qs;rport=6574;received=10.50.210.9.
From: <sip:22 at voipdev.mydomain.net>;tag=AZWk8e87s.
To: sip:11 at voipdev.mydomain.net.
CSeq: 20 INVITE.
Call-ID: LJoKbYM0YY.
Server: kamailio (4.3.1 (x86_64/linux)).
Content-Length: 0.
.

#
U 2015/07/22 10:46:19.366730 10.101.237.133:5060 -> 10.101.241.55:5060
INVITE sip:11 at voipdev.mydomain.net SIP/2.0.
Record-Route: <sip:10.101.237.133;lr;nat=yes>.
Via: SIP/2.0/UDP 10.101.237.133;branch=z9hG4bK8f82.23ebd7beee7641516f01572434199e7f.0.
Via: SIP/2.0/UDP 192.168.5.148:55529;received=10.50.210.9;branch=z9hG4bK.Lp01Vj8qs;rport=6574.
From: <sip:22 at voipdev.mydomain.net>;tag=AZWk8e87s.
To: sip:11 at voipdev.mydomain.net.
CSeq: 20 INVITE.
Call-ID: LJoKbYM0YY.
Max-Forwards: 70.
Supported: outbound.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE, SUBSCRIBE, INFO, UPDATE.
Content-Type: application/sdp.
Content-Length: 557.
Contact: <sip:22 at 10.50.210.9:6574>;+sip.instance="<urn:uuid:c1c7dbe5-7dac-4d3f-a496-af9fde38a0e7>".
User-Agent: LinphoneAndroid/2.4.1 (belle-sip/1.4.1).
Path: <sip:loadbalancer at 10.101.237.133;lr;received=sip:10.50.210.9:6574>.
.
v=0.
o=22 4026 1869 IN IP4 192.168.5.148.
s=Talk.
c=IN IP4 192.168.5.148.
b=AS:380.
t=0 0.
a=rtcp-xr:rcvr-rtt=all:10000 stat-summary=loss,dup,jitt,TTL voip-metrics.
m=audio 7076 RTP/AVP 96 97 98 99 0 8 101 100 102.
a=rtpmap:96 opus/48000/2.
a=fmtp:96 useinbandfec=1; stereo=0; sprop-stereo=0.
a=rtpmap:97 SILK/16000.
a=rtpmap:98 speex/16000.
a=fmtp:98 vbr=on.
a=rtpmap:99 speex/8000.
a=fmtp:99 vbr=on.
a=rtpmap:101 telephone-event/48000.
a=rtpmap:100 telephone-event/16000.
a=rtpmap:102 telephone-event/8000.
m=video 9078 RTP/AVP 96.
a=rtpmap:96 VP8/90000.

#
U 2015/07/22 10:46:19.370363 10.101.241.55:5060 -> 10.101.237.133:5060
SIP/2.0 407 Proxy Authentication Required.
Via: SIP/2.0/UDP 10.101.237.133;branch=z9hG4bK8f82.23ebd7beee7641516f01572434199e7f.0;rport=5060.
Via: SIP/2.0/UDP 192.168.5.148:55529;received=10.50.210.9;branch=z9hG4bK.Lp01Vj8qs;rport=6574.
From: <sip:22 at voipdev.mydomain.net>;tag=AZWk8e87s.
To: sip:11 at voipdev.mydomain.net;tag=ce9090b83c058770a0b4b75c40ac0f09.eefe.
CSeq: 20 INVITE.
Call-ID: LJoKbYM0YY.
Proxy-Authenticate: Digest realm="voipdev.mydomain.net", nonce="Va+t51WvrLslK8BVt3nSynqYq5rWNq58".
Server: kamailio (4.3.0 (x86_64/linux)).
Content-Length: 0.
.

#
U 2015/07/22 10:46:19.370801 10.101.237.133:5060 -> 10.101.241.55:5060
ACK sip:11 at voipdev.mydomain.net SIP/2.0.
Via: SIP/2.0/UDP 10.101.237.133;branch=z9hG4bK8f82.23ebd7beee7641516f01572434199e7f.0.
From: <sip:22 at voipdev.mydomain.net>;tag=AZWk8e87s.
To: sip:11 at voipdev.mydomain.net;tag=ce9090b83c058770a0b4b75c40ac0f09.eefe.
CSeq: 20 ACK.
Call-ID: LJoKbYM0YY.
Max-Forwards: 70.
Content-Length: 0.
.

#
U 2015/07/22 10:46:19.371162 10.101.237.133:5060 -> 10.50.210.9:6574
SIP/2.0 407 Proxy Authentication Required.
Via: SIP/2.0/UDP 192.168.5.148:55529;received=10.50.210.9;branch=z9hG4bK.Lp01Vj8qs;rport=6574.
From: <sip:22 at voipdev.mydomain.net>;tag=AZWk8e87s.
To: sip:11 at voipdev.mydomain.net;tag=ce9090b83c058770a0b4b75c40ac0f09.eefe.
CSeq: 20 INVITE.
Call-ID: LJoKbYM0YY.
Proxy-Authenticate: Digest realm="voipdev.mydomain.net", nonce="Va+t51WvrLslK8BVt3nSynqYq5rWNq58".
Server: kamailio (4.3.0 (x86_64/linux)).
Content-Length: 0.
.

#
U 2015/07/22 10:46:19.517390 10.50.210.9:6574 -> 10.101.237.133:5060
ACK sip:11 at voipdev.mydomain.net SIP/2.0.
Via: SIP/2.0/UDP 192.168.5.148:55529;branch=z9hG4bK.Lp01Vj8qs;rport.
Call-ID: LJoKbYM0YY.
From: <sip:22 at voipdev.mydomain.net>;tag=AZWk8e87s.
To: <sip:11 at voipdev.mydomain.net>;tag=ce9090b83c058770a0b4b75c40ac0f09.eefe.
Contact: <sip:22 at 10.50.210.9:6574>;+sip.instance="<urn:uuid:c1c7dbe5-7dac-4d3f-a496-af9fde38a0e7>".
Max-Forwards: 70.
CSeq: 20 ACK.
.

#
U 2015/07/22 10:46:19.518933 10.50.210.9:6574 -> 10.101.237.133:5060
INVITE sip:11 at voipdev.mydomain.net SIP/2.0.
Via: SIP/2.0/UDP 192.168.5.148:55529;branch=z9hG4bK.jWzhtRBsW;rport.
From: <sip:22 at voipdev.mydomain.net>;tag=AZWk8e87s.
To: sip:11 at voipdev.mydomain.net.
CSeq: 21 INVITE.
Call-ID: LJoKbYM0YY.
Max-Forwards: 70.
Supported: outbound.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE, SUBSCRIBE, INFO, UPDATE.
Content-Type: application/sdp.
Content-Length: 557.
Contact: <sip:22 at 10.50.210.9:6574>;+sip.instance="<urn:uuid:c1c7dbe5-7dac-4d3f-a496-af9fde38a0e7>".
User-Agent: LinphoneAndroid/2.4.1 (belle-sip/1.4.1).
Proxy-Authorization:  Digest realm="voipdev.mydomain.net", nonce="Va+t51WvrLslK8BVt3nSynqYq5rWNq58", username="22",  uri="sip:11 at voipdev.mydomain.net", response="87646e434a6a734c2a8eceec849196cd".
.
v=0.
o=22 4026 1869 IN IP4 192.168.5.148.
s=Talk.
c=IN IP4 192.168.5.148.
b=AS:380.
t=0 0.
a=rtcp-xr:rcvr-rtt=all:10000 stat-summary=loss,dup,jitt,TTL voip-metrics.
m=audio 7076 RTP/AVP 96 97 98 99 0 8 101 100 102.
a=rtpmap:96 opus/48000/2.
a=fmtp:96 useinbandfec=1; stereo=0; sprop-stereo=0.
a=rtpmap:97 SILK/16000.
a=rtpmap:98 speex/16000.
a=fmtp:98 vbr=on.
a=rtpmap:99 speex/8000.
a=fmtp:99 vbr=on.
a=rtpmap:101 telephone-event/48000.
a=rtpmap:100 telephone-event/16000.
a=rtpmap:102 telephone-event/8000.
m=video 9078 RTP/AVP 96.
a=rtpmap:96 VP8/90000.

#
U 2015/07/22 10:46:19.519558 10.101.237.133:5060 -> 10.50.210.9:6574
SIP/2.0 100 trying -- your call is important to us.
Via: SIP/2.0/UDP 192.168.5.148:55529;branch=z9hG4bK.jWzhtRBsW;rport=6574;received=10.50.210.9.
From: <sip:22 at voipdev.mydomain.net>;tag=AZWk8e87s.
To: sip:11 at voipdev.mydomain.net.
CSeq: 21 INVITE.
Call-ID: LJoKbYM0YY.
Server: kamailio (4.3.1 (x86_64/linux)).
Content-Length: 0.
.

#
U 2015/07/22 10:46:19.519821 10.101.237.133:5060 -> 10.101.241.55:5060
INVITE sip:11 at voipdev.mydomain.net SIP/2.0.
Record-Route: <sip:10.101.237.133;lr;nat=yes>.
Via: SIP/2.0/UDP 10.101.237.133;branch=z9hG4bK9f82.68623c2d6329f689d3ab43fdd3cf83c5.0.
Via: SIP/2.0/UDP 192.168.5.148:55529;received=10.50.210.9;branch=z9hG4bK.jWzhtRBsW;rport=6574.
From: <sip:22 at voipdev.mydomain.net>;tag=AZWk8e87s.
To: sip:11 at voipdev.mydomain.net.
CSeq: 21 INVITE.
Call-ID: LJoKbYM0YY.
Max-Forwards: 70.
Supported: outbound.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE, SUBSCRIBE, INFO, UPDATE.
Content-Type: application/sdp.
Content-Length: 557.
Contact: <sip:22 at 10.50.210.9:6574>;+sip.instance="<urn:uuid:c1c7dbe5-7dac-4d3f-a496-af9fde38a0e7>".
User-Agent: LinphoneAndroid/2.4.1 (belle-sip/1.4.1).
Proxy-Authorization:  Digest realm="voipdev.mydomain.net", nonce="Va+t51WvrLslK8BVt3nSynqYq5rWNq58", username="22",  uri="sip:11 at voipdev.mydomain.net", response="87646e434a6a734c2a8eceec849196cd".
Path: <sip:loadbalancer at 10.101.237.133;lr;received=sip:10.50.210.9:6574>.
.
v=0.
o=22 4026 1869 IN IP4 192.168.5.148.
s=Talk.
c=IN IP4 192.168.5.148.
b=AS:380.
t=0 0.
a=rtcp-xr:rcvr-rtt=all:10000 stat-summary=loss,dup,jitt,TTL voip-metrics.
m=audio 7076 RTP/AVP 96 97 98 99 0 8 101 100 102.
a=rtpmap:96 opus/48000/2.
a=fmtp:96 useinbandfec=1; stereo=0; sprop-stereo=0.
a=rtpmap:97 SILK/16000.
a=rtpmap:98 speex/16000.
a=fmtp:98 vbr=on.
a=rtpmap:99 speex/8000.
a=fmtp:99 vbr=on.
a=rtpmap:101 telephone-event/48000.
a=rtpmap:100 telephone-event/16000.
a=rtpmap:102 telephone-event/8000.
m=video 9078 RTP/AVP 96.
a=rtpmap:96 VP8/90000.

#
U 2015/07/22 10:46:19.527803 10.101.241.55:5060 -> 10.101.237.133:5060
SIP/2.0 100 trying -- your call is important to us.
Via: SIP/2.0/UDP 10.101.237.133;branch=z9hG4bK9f82.68623c2d6329f689d3ab43fdd3cf83c5.0;rport=5060.
Via: SIP/2.0/UDP 192.168.5.148:55529;received=10.50.210.9;branch=z9hG4bK.jWzhtRBsW;rport=6574.
From: <sip:22 at voipdev.mydomain.net>;tag=AZWk8e87s.
To: sip:11 at voipdev.mydomain.net.
CSeq: 21 INVITE.
Call-ID: LJoKbYM0YY.
Server: kamailio (4.3.0 (x86_64/linux)).
Content-Length: 0.
.

##
U 2015/07/22 10:46:19.531380 10.101.241.55:5060 -> 10.101.237.133:5060
INVITE sip:11 at 10.50.210.9:50365 SIP/2.0.
Record-Route: <sip:10.101.241.55;lr;nat=yes>.
Record-Route: <sip:10.101.237.133;lr;nat=yes>.
Via: SIP/2.0/UDP 10.101.241.55;branch=z9hG4bK9f82.ae0b52341a6aa41d8f28e7f65ed9fd55.0.
Route: <sip:loadbalancer at 10.101.237.133;lr;received=sip:10.50.210.9:50365>.
Via: SIP/2.0/UDP 10.101.237.133;rport=5060;branch=z9hG4bK9f82.68623c2d6329f689d3ab43fdd3cf83c5.0.
Via: SIP/2.0/UDP 192.168.5.148:55529;received=10.50.210.9;branch=z9hG4bK.jWzhtRBsW;rport=6574.
From: <sip:22 at voipdev.mydomain.net>;tag=AZWk8e87s.
To: sip:11 at voipdev.mydomain.net.
CSeq: 21 INVITE.
Call-ID: LJoKbYM0YY.
Max-Forwards: 69.
Supported: outbound.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE, SUBSCRIBE, INFO, UPDATE.
Content-Type: application/sdp.
Content-Length: 577.
Contact: <sip:22 at 10.50.210.9:6574>;+sip.instance="<urn:uuid:c1c7dbe5-7dac-4d3f-a496-af9fde38a0e7>".
User-Agent: LinphoneAndroid/2.4.1 (belle-sip/1.4.1).
Path: <sip:loadbalancer at 10.101.237.133;lr;received=sip:10.50.210.9:6574>.
.
v=0.
o=22 4026 1869 IN IP4 10.101.254.33.
s=Talk.
c=IN IP4 10.101.254.33.
b=AS:380.
t=0 0.
a=rtcp-xr:rcvr-rtt=all:10000 stat-summary=loss,dup,jitt,TTL voip-metrics.
m=audio 46696 RTP/AVP 96 97 98 99 0 8 101 100 102.
a=rtpmap:96 opus/48000/2.
a=fmtp:96 useinbandfec=1; stereo=0; sprop-stereo=0.
a=rtpmap:97 SILK/16000.
a=rtpmap:98 speex/16000.
a=fmtp:98 vbr=on.
a=rtpmap:99 speex/8000.
a=fmtp:99 vbr=on.
a=rtpmap:101 telephone-event/48000.
a=rtpm
#
U 2015/07/22 10:46:19.531837 10.101.237.133:5060 -> 10.101.241.55:5060
SIP/2.0 100 trying -- your call is important to us.
Via: SIP/2.0/UDP 10.101.241.55;branch=z9hG4bK9f82.ae0b52341a6aa41d8f28e7f65ed9fd55.0;rport=5060.
Via: SIP/2.0/UDP 10.101.237.133;rport=5060;branch=z9hG4bK9f82.68623c2d6329f689d3ab43fdd3cf83c5.0.
Via: SIP/2.0/UDP 192.168.5.148:55529;received=10.50.210.9;branch=z9hG4bK.jWzhtRBsW;rport=6574.
From: <sip:22 at voipdev.mydomain.net>;tag=AZWk8e87s.
To: sip:11 at voipdev.mydomain.net.
CSeq: 21 INVITE.
Call-ID: LJoKbYM0YY.
Server: kamailio (4.3.1 (x86_64/linux)).
Content-Length: 0.
.

#
U 2015/07/22 10:46:19.532046 10.101.237.133:5060 -> 10.101.241.55:5060
INVITE sip:11 at voipdev.mydomain.net:50365 SIP/2.0.
Record-Route: <sip:10.101.237.133;lr;nat=yes>.
Record-Route: <sip:10.101.241.55;lr;nat=yes>.
Record-Route: <sip:10.101.237.133;lr;nat=yes>.
Via: SIP/2.0/UDP 10.101.237.133;branch=z9hG4bK9f82.f0c82c02f956f633f404e22ab5fbda67.0.
Via: SIP/2.0/UDP 10.101.241.55;rport=5060;branch=z9hG4bK9f82.ae0b52341a6aa41d8f28e7f65ed9fd55.0.
Route: <sip:loadbalancer at 10.101.237.133;lr;received=sip:10.50.210.9:50365>.
Via: SIP/2.0/UDP 10.101.237.133;rport=5060;branch=z9hG4bK9f82.68623c2d6329f689d3ab43fdd3cf83c5.0.
Via: SIP/2.0/UDP 192.168.5.148:55529;received=10.50.210.9;branch=z9hG4bK.jWzhtRBsW;rport=6574.
From: <sip:22 at voipdev.mydomain.net>;tag=AZWk8e87s.
To: sip:11 at voipdev.mydomain.net.
CSeq: 21 INVITE.
Call-ID: LJoKbYM0YY.
Max-Forwards: 69.
Supported: outbound.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE, SUBSCRIBE, INFO, UPDATE.
Content-Type: application/sdp.
Content-Length: 577.
Contact: <sip:22 at 10.50.210.9:6574;alias=10.101.241.55~5060~1>;+sip.instance="<urn:uuid:c1c7dbe5-7dac-4d3f-a496-af9fde38a0e7>".
User-Agent: LinphoneAndroid/2.4.1 (belle-sip/1.4.1).
Path: <sip:loadbalancer at 10.101.237.133;lr;received=sip:10.101.241.55:5060>.
Path: <sip:loadbalancer at 10.101.237.133;lr;received=sip:10.50.210.9:6574>.
.
v=0.
o=22 4026 1869 IN IP4 10.101.254.33.
s=Talk.
c=IN IP4 10.101.254.33.
b=AS:380.
t=0 0.
a=rtcp-xr:rcvr-rtt=all:10000 stat-summary=loss,dup,jitt,TTL voip-metrics.
m=audio 46696 RTP/AVP 96 97 98 99 0 8 101 100 102.
a=rtpmap:96 opus/48000/2.
a=fmtp:96 useinbandfec=1; stereo=0; sprop-stereo=0.
a=rtpmap:97 SILK/16000.
a=rtpmap:98 speex/16000.
a=fmtp:98 vbr=on.
a=rtpmap:99 speex/8000.
a=fmtp:99 vbr=on.
a=rtpmap:101 telephone-event/48000.
a=rtpmap:100 telephone-event/16000.
a=rtpmap:102 telephone-event/8000.
m=video 39872 RTP/AVP 96.
a=rtpmap:96 VP8/90000.
a=nortpproxy:yes.

#
U 2015/07/22 10:46:19.534529 10.101.241.55:5060 -> 10.101.237.133:5060
SIP/2.0 407 Proxy Authentication Required.
Via: SIP/2.0/UDP 10.101.237.133;branch=z9hG4bK9f82.f0c82c02f956f633f404e22ab5fbda67.0;rport=5060.
Via: SIP/2.0/UDP 10.101.241.55;rport=5060;branch=z9hG4bK9f82.ae0b52341a6aa41d8f28e7f65ed9fd55.0.
Via: SIP/2.0/UDP 10.101.237.133;rport=5060;branch=z9hG4bK9f82.68623c2d6329f689d3ab43fdd3cf83c5.0.
Via: SIP/2.0/UDP 192.168.5.148:55529;received=10.50.210.9;branch=z9hG4bK.jWzhtRBsW;rport=6574.
From: <sip:22 at voipdev.mydomain.net>;tag=AZWk8e87s.
To: sip:11 at voipdev.mydomain.net;tag=ce9090b83c058770a0b4b75c40ac0f09.a2ac.
CSeq: 21 INVITE.
Call-ID: LJoKbYM0YY.
Proxy-Authenticate: Digest realm="voipdev.mydomain.net", nonce="Va+t51WvrLslK8BVt3nSynqYq5rWNq58".
Server: kamailio (4.3.0 (x86_64/linux)).
Content-Length: 0.
.

#
U 2015/07/22 10:46:19.534655 10.101.237.133:5060 -> 10.101.241.55:5060
ACK sip:11 at voipdev.mydomain.net:50365 SIP/2.0.
Via: SIP/2.0/UDP 10.101.237.133;branch=z9hG4bK9f82.f0c82c02f956f633f404e22ab5fbda67.0.
Route: <sip:loadbalancer at 10.101.237.133;lr;received=sip:10.50.210.9:50365>.
From: <sip:22 at voipdev.mydomain.net>;tag=AZWk8e87s.
To: sip:11 at voipdev.mydomain.net;tag=ce9090b83c058770a0b4b75c40ac0f09.a2ac.
CSeq: 21 ACK.
Call-ID: LJoKbYM0YY.
Max-Forwards: 69.
Content-Length: 0.
.

#
U 2015/07/22 10:46:19.534917 10.101.237.133:5060 -> 10.101.241.55:5060
SIP/2.0 407 Proxy Authentication Required.
Via: SIP/2.0/UDP 10.101.241.55;rport=5060;branch=z9hG4bK9f82.ae0b52341a6aa41d8f28e7f65ed9fd55.0.
Via: SIP/2.0/UDP 10.101.237.133;rport=5060;branch=z9hG4bK9f82.68623c2d6329f689d3ab43fdd3cf83c5.0.
Via: SIP/2.0/UDP 192.168.5.148:55529;received=10.50.210.9;branch=z9hG4bK.jWzhtRBsW;rport=6574.
From: <sip:22 at voipdev.mydomain.net>;tag=AZWk8e87s.
To: sip:11 at voipdev.mydomain.net;tag=ce9090b83c058770a0b4b75c40ac0f09.a2ac.
CSeq: 21 INVITE.
Call-ID: LJoKbYM0YY.
Proxy-Authenticate: Digest realm="voipdev.mydomain.net", nonce="Va+t51WvrLslK8BVt3nSynqYq5rWNq58".
Server: kamailio (4.3.0 (x86_64/linux)).
Content-Length: 0.
.

#
U 2015/07/22 10:46:19.536778 10.101.241.55:5060 -> 10.101.237.133:5060
ACK sip:11 at 10.50.210.9:50365 SIP/2.0.
Via: SIP/2.0/UDP 10.101.241.55;branch=z9hG4bK9f82.ae0b52341a6aa41d8f28e7f65ed9fd55.0.
Route: <sip:loadbalancer at 10.101.237.133;lr;received=sip:10.50.210.9:50365>.
From: <sip:22 at voipdev.mydomain.net>;tag=AZWk8e87s.
To: sip:11 at voipdev.mydomain.net;tag=ce9090b83c058770a0b4b75c40ac0f09.a2ac.
CSeq: 21 ACK.
Call-ID: LJoKbYM0YY.
Max-Forwards: 69.
Content-Length: 0.
.

#
U 2015/07/22 10:46:19.538507 10.101.241.55:5060 -> 10.101.237.133:5060
SIP/2.0 407 Proxy Authentication Required.
Via: SIP/2.0/UDP 10.101.237.133;rport=5060;branch=z9hG4bK9f82.68623c2d6329f689d3ab43fdd3cf83c5.0.
Via: SIP/2.0/UDP 192.168.5.148:55529;received=10.50.210.9;branch=z9hG4bK.jWzhtRBsW;rport=6574.
From: <sip:22 at voipdev.mydomain.net>;tag=AZWk8e87s.
To: sip:11 at voipdev.mydomain.net;tag=ce9090b83c058770a0b4b75c40ac0f09.a2ac.
CSeq: 21 INVITE.
Call-ID: LJoKbYM0YY.
Proxy-Authenticate: Digest realm="voipdev.mydomain.net", nonce="Va+t51WvrLslK8BVt3nSynqYq5rWNq58".
Server: kamailio (4.3.0 (x86_64/linux)).
Content-Length: 0.
.

#
U 2015/07/22 10:46:19.538600 10.101.237.133:5060 -> 10.101.241.55:5060
ACK sip:11 at voipdev.mydomain.net SIP/2.0.
Via: SIP/2.0/UDP 10.101.237.133;branch=z9hG4bK9f82.68623c2d6329f689d3ab43fdd3cf83c5.0.
From: <sip:22 at voipdev.mydomain.net>;tag=AZWk8e87s.
To: sip:11 at voipdev.mydomain.net;tag=ce9090b83c058770a0b4b75c40ac0f09.a2ac.
CSeq: 21 ACK.
Call-ID: LJoKbYM0YY.
Max-Forwards: 70.
Content-Length: 0.
.

#
U 2015/07/22 10:46:19.538721 10.101.237.133:5060 -> 10.50.210.9:6574
SIP/2.0 407 Proxy Authentication Required.
Via: SIP/2.0/UDP 192.168.5.148:55529;received=10.50.210.9;branch=z9hG4bK.jWzhtRBsW;rport=6574.
From: <sip:22 at voipdev.mydomain.net>;tag=AZWk8e87s.
To: sip:11 at voipdev.mydomain.net;tag=ce9090b83c058770a0b4b75c40ac0f09.a2ac.
CSeq: 21 INVITE.
Call-ID: LJoKbYM0YY.
Proxy-Authenticate: Digest realm="voipdev.mydomain.net", nonce="Va+t51WvrLslK8BVt3nSynqYq5rWNq58".
Server: kamailio (4.3.0 (x86_64/linux)).
Content-Length: 0.
.

#
U 2015/07/22 10:46:19.689874 10.50.210.9:6574 -> 10.101.237.133:5060
ACK sip:11 at voipdev.mydomain.net SIP/2.0.
Via: SIP/2.0/UDP 192.168.5.148:55529;branch=z9hG4bK.jWzhtRBsW;rport.
Call-ID: LJoKbYM0YY.
From: <sip:22 at voipdev.mydomain.net>;tag=AZWk8e87s.
To: <sip:11 at voipdev.mydomain.net>;tag=ce9090b83c058770a0b4b75c40ac0f09.a2ac.
Contact: <sip:22 at 10.50.210.9:6574>;+sip.instance="<urn:uuid:c1c7dbe5-7dac-4d3f-a496-af9fde38a0e7>".
Max-Forwards: 70.
CSeq: 21 ACK.
.

#
U 2015/07/22 10:46:19.692046 10.50.210.9:6574 -> 10.101.237.133:5060
INVITE sip:11 at voipdev.mydomain.net SIP/2.0.
Via: SIP/2.0/UDP 192.168.5.148:55529;branch=z9hG4bK.dI1VgySEM;rport.
From: <sip:22 at voipdev.mydomain.net>;tag=AZWk8e87s.
To: sip:11 at voipdev.mydomain.net.
CSeq: 22 INVITE.
Call-ID: LJoKbYM0YY.
Max-Forwards: 70.
Supported: outbound.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE, SUBSCRIBE, INFO, UPDATE.
Content-Type: application/sdp.
Content-Length: 557.
Contact: <sip:22 at 10.50.210.9:6574>;+sip.instance="<urn:uuid:c1c7dbe5-7dac-4d3f-a496-af9fde38a0e7>".
User-Agent: LinphoneAndroid/2.4.1 (belle-sip/1.4.1).
Proxy-Authorization:  Digest realm="voipdev.mydomain.net", nonce="Va+t51WvrLslK8BVt3nSynqYq5rWNq58", username="22",  uri="sip:11 at voipdev.mydomain.net", response="87646e434a6a734c2a8eceec849196cd".
.
v=0.
o=22 4026 1869 IN IP4 192.168.5.148.
s=Talk.
c=IN IP4 192.168.5.148.
b=AS:380.
t=0 0.
a=rtcp-xr:rcvr-rtt=all:10000 stat-summary=loss,dup,jitt,TTL voip-metrics.
m=audio 7076 RTP/AVP 96 97 98 99 0 8 101 100 102.
a=rtpmap:96 opus/48000/2.
a=fmtp:96 useinbandfec=1; stereo=0; sprop-stereo=0.
a=rtpmap:97 SILK/16000.
a=rtpmap:98 speex/16000.
a=fmtp:98 vbr=on.
a=rtpmap:99 speex/8000.
a=fmtp:99 vbr=on.
a=rtpmap:101 telephone-event/48000.
a=rtpmap:100 telephone-event/16000.
a=rtpmap:102 telephone-event/8000.
m=video 9078 RTP/AVP 96.
a=rtpmap:96 VP8/90000.

#
U 2015/07/22 10:46:19.692374 10.101.237.133:5060 -> 10.50.210.9:6574
SIP/2.0 100 trying -- your call is important to us.
Via: SIP/2.0/UDP 192.168.5.148:55529;branch=z9hG4bK.dI1VgySEM;rport=6574;received=10.50.210.9.
From: <sip:22 at voipdev.mydomain.net>;tag=AZWk8e87s.
To: sip:11 at voipdev.mydomain.net.
CSeq: 22 INVITE.
Call-ID: LJoKbYM0YY.
Server: kamailio (4.3.1 (x86_64/linux)).
Content-Length: 0.
.

#
U 2015/07/22 10:46:19.692654 10.101.237.133:5060 -> 10.101.241.55:5060
INVITE sip:11 at voipdev.mydomain.net SIP/2.0.
Record-Route: <sip:10.101.237.133;lr;nat=yes>.
Via: SIP/2.0/UDP 10.101.237.133;branch=z9hG4bK6f82.059bd882e24a3d3442c386d0596ea524.0.
Via: SIP/2.0/UDP 192.168.5.148:55529;received=10.50.210.9;branch=z9hG4bK.dI1VgySEM;rport=6574.
From: <sip:22 at voipdev.mydomain.net>;tag=AZWk8e87s.
To: sip:11 at voipdev.mydomain.net.
CSeq: 22 INVITE.
Call-ID: LJoKbYM0YY.
Max-Forwards: 70.
Supported: outbound.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE, SUBSCRIBE, INFO, UPDATE.
Content-Type: application/sdp.
Content-Length: 557.
Contact: <sip:22 at 10.50.210.9:6574>;+sip.instance="<urn:uuid:c1c7dbe5-7dac-4d3f-a496-af9fde38a0e7>".
User-Agent: LinphoneAndroid/2.4.1 (belle-sip/1.4.1).
Proxy-Authorization:  Digest realm="voipdev.mydomain.net", nonce="Va+t51WvrLslK8BVt3nSynqYq5rWNq58", username="22",  uri="sip:11 at voipdev.mydomain.net", response="87646e434a6a734c2a8eceec849196cd".
Path: <sip:loadbalancer at 10.101.237.133;lr;received=sip:10.50.210.9:6574>.
.
v=0.
o=22 4026 1869 IN IP4 192.168.5.148.
s=Talk.
c=IN IP4 192.168.5.148.
b=AS:380.
t=0 0.
a=rtcp-xr:rcvr-rtt=all:10000 stat-summary=loss,dup,jitt,TTL voip-metrics.
m=audio 7076 RTP/AVP 96 97 98 99 0 8 101 100 102.
a=rtpmap:96 opus/48000/2.
a=fmtp:96 useinbandfec=1; stereo=0; sprop-stereo=0.
a=rtpmap:97 SILK/16000.
a=rtpmap:98 speex/16000.
a=fmtp:98 vbr=on.
a=rtpmap:99 speex/8000.
a=fmtp:99 vbr=on.
a=rtpmap:101 telephone-event/48000.
a=rtpmap:100 telephone-event/16000.
a=rtpmap:102 telephone-event/8000.
m=video 9078 RTP/AVP 96.
a=rtpmap:96 VP8/90000.

#
U 2015/07/22 10:46:19.697757 10.101.241.55:5060 -> 10.101.237.133:5060
SIP/2.0 100 trying -- your call is important to us.
Via: SIP/2.0/UDP 10.101.237.133;branch=z9hG4bK6f82.059bd882e24a3d3442c386d0596ea524.0;rport=5060.
Via: SIP/2.0/UDP 192.168.5.148:55529;received=10.50.210.9;branch=z9hG4bK.dI1VgySEM;rport=6574.
From: <sip:22 at voipdev.mydomain.net>;tag=AZWk8e87s.
To: sip:11 at voipdev.mydomain.net.
CSeq: 22 INVITE.
Call-ID: LJoKbYM0YY.
Server: kamailio (4.3.0 (x86_64/linux)).
Content-Length: 0.
.

##
U 2015/07/22 10:46:19.701021 10.101.241.55:5060 -> 10.101.237.133:5060
INVITE sip:11 at 10.50.210.9:50365 SIP/2.0.
Record-Route: <sip:10.101.241.55;lr;nat=yes>.
Record-Route: <sip:10.101.237.133;lr;nat=yes>.
Via: SIP/2.0/UDP 10.101.241.55;branch=z9hG4bK6f82.e40c4df95813d4f4ef8412001980d29c.0.
Route: <sip:loadbalancer at 10.101.237.133;lr;received=sip:10.50.210.9:50365>.
Via: SIP/2.0/UDP 10.101.237.133;rport=5060;branch=z9hG4bK6f82.059bd882e24a3d3442c386d0596ea524.0.
Via: SIP/2.0/UDP 192.168.5.148:55529;received=10.50.210.9;branch=z9hG4bK.dI1VgySEM;rport=6574.
From: <sip:22 at voipdev.mydomain.net>;tag=AZWk8e87s.
To: sip:11 at voipdev.mydomain.net.
CSeq: 22 INVITE.
Call-ID: LJoKbYM0YY.
Max-Forwards: 69.
Supported: outbound.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE, SUBSCRIBE, INFO, UPDATE.
Content-Type: application/sdp.
Content-Length: 577.
Contact: <sip:22 at 10.50.210.9:6574>;+sip.instance="<urn:uuid:c1c7dbe5-7dac-4d3f-a496-af9fde38a0e7>".
User-Agent: LinphoneAndroid/2.4.1 (belle-sip/1.4.1).
Path: <sip:loadbalancer at 10.101.237.133;lr;received=sip:10.50.210.9:6574>.
.
v=0.
o=22 4026 1869 IN IP4 10.101.254.33.
s=Talk.
c=IN IP4 10.101.254.33.
b=AS:380.
t=0 0.
a=rtcp-xr:rcvr-rtt=all:10000 stat-summary=loss,dup,jitt,TTL voip-metrics.
m=audio 58498 RTP/AVP 96 97 98 99 0 8 101 100 102.
a=rtpmap:96 opus/48000/2.
a=fmtp:96 useinbandfec=1; stereo=0; sprop-stereo=0.
a=rtpmap:97 SILK/16000.
a=rtpmap:98 speex/16000.
a=fmtp:98 vbr=on.
a=rtpmap:99 speex/8000.
a=fmtp:99 vbr=on.
a=rtpmap:101 telephone-event/48000.
a=rtpm
#
U 2015/07/22 10:46:19.701273 10.101.237.133:5060 -> 10.101.241.55:5060
SIP/2.0 100 trying -- your call is important to us.
Via: SIP/2.0/UDP 10.101.241.55;branch=z9hG4bK6f82.e40c4df95813d4f4ef8412001980d29c.0;rport=5060.
Via: SIP/2.0/UDP 10.101.237.133;rport=5060;branch=z9hG4bK6f82.059bd882e24a3d3442c386d0596ea524.0.
Via: SIP/2.0/UDP 192.168.5.148:55529;received=10.50.210.9;branch=z9hG4bK.dI1VgySEM;rport=6574.
From: <sip:22 at voipdev.mydomain.net>;tag=AZWk8e87s.
To: sip:11 at voipdev.mydomain.net.
CSeq: 22 INVITE.
Call-ID: LJoKbYM0YY.
Server: kamailio (4.3.1 (x86_64/linux)).
Content-Length: 0.
.

#
U 2015/07/22 10:46:19.701807 10.101.237.133:5060 -> 10.101.241.55:5060
INVITE sip:11 at voipdev.mydomain.net:50365 SIP/2.0.
Record-Route: <sip:10.101.237.133;lr;nat=yes>.
Record-Route: <sip:10.101.241.55;lr;nat=yes>.
Record-Route: <sip:10.101.237.133;lr;nat=yes>.
Via: SIP/2.0/UDP 10.101.237.133;branch=z9hG4bK6f82.324cd48fb515d9d5d292647a2718aa24.0.
Via: SIP/2.0/UDP 10.101.241.55;rport=5060;branch=z9hG4bK6f82.e40c4df95813d4f4ef8412001980d29c.0.
Route: <sip:loadbalancer at 10.101.237.133;lr;received=sip:10.50.210.9:50365>.
Via: SIP/2.0/UDP 10.101.237.133;rport=5060;branch=z9hG4bK6f82.059bd882e24a3d3442c386d0596ea524.0.
Via: SIP/2.0/UDP 192.168.5.148:55529;received=10.50.210.9;branch=z9hG4bK.dI1VgySEM;rport=6574.
From: <sip:22 at voipdev.mydomain.net>;tag=AZWk8e87s.
To: sip:11 at voipdev.mydomain.net.
CSeq: 22 INVITE.
Call-ID: LJoKbYM0YY.
Max-Forwards: 69.
Supported: outbound.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE, SUBSCRIBE, INFO, UPDATE.
Content-Type: application/sdp.
Content-Length: 577.
Contact: <sip:22 at 10.50.210.9:6574;alias=10.101.241.55~5060~1>;+sip.instance="<urn:uuid:c1c7dbe5-7dac-4d3f-a496-af9fde38a0e7>".
User-Agent: LinphoneAndroid/2.4.1 (belle-sip/1.4.1).
Path: <sip:loadbalancer at 10.101.237.133;lr;received=sip:10.101.241.55:5060>.
Path: <sip:loadbalancer at 10.101.237.133;lr;received=sip:10.50.210.9:6574>.
.
v=0.
o=22 4026 1869 IN IP4 10.101.254.33.
s=Talk.
c=IN IP4 10.101.254.33.
b=AS:380.
t=0 0.
a=rtcp-xr:rcvr-rtt=all:10000 stat-summary=loss,dup,jitt,TTL voip-metrics.
m=audio 58498 RTP/AVP 96 97 98 99 0 8 101 100 102.
a=rtpmap:96 opus/48000/2.
a=fmtp:96 useinbandfec=1; stereo=0; sprop-stereo=0.
a=rtpmap:97 SILK/16000.
a=rtpmap:98 speex/16000.
a=fmtp:98 vbr=on.
a=rtpmap:99 speex/8000.
a=fmtp:99 vbr=on.
a=rtpmap:101 telephone-event/48000.
a=rtpmap:100 telephone-event/16000.
a=rtpmap:102 telephone-event/8000.
m=video 62166 RTP/AVP 96.
a=rtpmap:96 VP8/90000.
a=nortpproxy:yes.

#
U 2015/07/22 10:46:19.704113 10.101.241.55:5060 -> 10.101.237.133:5060
SIP/2.0 407 Proxy Authentication Required.
Via: SIP/2.0/UDP 10.101.237.133;branch=z9hG4bK6f82.324cd48fb515d9d5d292647a2718aa24.0;rport=5060.
Via: SIP/2.0/UDP 10.101.241.55;rport=5060;branch=z9hG4bK6f82.e40c4df95813d4f4ef8412001980d29c.0.
Via: SIP/2.0/UDP 10.101.237.133;rport=5060;branch=z9hG4bK6f82.059bd882e24a3d3442c386d0596ea524.0.
Via: SIP/2.0/UDP 192.168.5.148:55529;received=10.50.210.9;branch=z9hG4bK.dI1VgySEM;rport=6574.
From: <sip:22 at voipdev.mydomain.net>;tag=AZWk8e87s.
To: sip:11 at voipdev.mydomain.net;tag=ce9090b83c058770a0b4b75c40ac0f09.d6d7.
CSeq: 22 INVITE.
Call-ID: LJoKbYM0YY.
Proxy-Authenticate: Digest realm="voipdev.mydomain.net", nonce="Va+t51WvrLslK8BVt3nSynqYq5rWNq58".
Server: kamailio (4.3.0 (x86_64/linux)).
Content-Length: 0.
.

#
U 2015/07/22 10:46:19.704207 10.101.237.133:5060 -> 10.101.241.55:5060
ACK sip:11 at voipdev.mydomain.net:50365 SIP/2.0.
Via: SIP/2.0/UDP 10.101.237.133;branch=z9hG4bK6f82.324cd48fb515d9d5d292647a2718aa24.0.
Route: <sip:loadbalancer at 10.101.237.133;lr;received=sip:10.50.210.9:50365>.
From: <sip:22 at voipdev.mydomain.net>;tag=AZWk8e87s.
To: sip:11 at voipdev.mydomain.net;tag=ce9090b83c058770a0b4b75c40ac0f09.d6d7.
CSeq: 22 ACK.
Call-ID: LJoKbYM0YY.
Max-Forwards: 69.
Content-Length: 0.
.

#
U 2015/07/22 10:46:19.704324 10.101.237.133:5060 -> 10.101.241.55:5060
SIP/2.0 407 Proxy Authentication Required.
Via: SIP/2.0/UDP 10.101.241.55;rport=5060;branch=z9hG4bK6f82.e40c4df95813d4f4ef8412001980d29c.0.
Via: SIP/2.0/UDP 10.101.237.133;rport=5060;branch=z9hG4bK6f82.059bd882e24a3d3442c386d0596ea524.0.
Via: SIP/2.0/UDP 192.168.5.148:55529;received=10.50.210.9;branch=z9hG4bK.dI1VgySEM;rport=6574.
From: <sip:22 at voipdev.mydomain.net>;tag=AZWk8e87s.
To: sip:11 at voipdev.mydomain.net;tag=ce9090b83c058770a0b4b75c40ac0f09.d6d7.
CSeq: 22 INVITE.
Call-ID: LJoKbYM0YY.
Proxy-Authenticate: Digest realm="voipdev.mydomain.net", nonce="Va+t51WvrLslK8BVt3nSynqYq5rWNq58".
Server: kamailio (4.3.0 (x86_64/linux)).
Content-Length: 0.
.

#
U 2015/07/22 10:46:19.705025 10.101.241.55:5060 -> 10.101.237.133:5060
ACK sip:11 at 10.50.210.9:50365 SIP/2.0.
Via: SIP/2.0/UDP 10.101.241.55;branch=z9hG4bK6f82.e40c4df95813d4f4ef8412001980d29c.0.
Route: <sip:loadbalancer at 10.101.237.133;lr;received=sip:10.50.210.9:50365>.
From: <sip:22 at voipdev.mydomain.net>;tag=AZWk8e87s.
To: sip:11 at voipdev.mydomain.net;tag=ce9090b83c058770a0b4b75c40ac0f09.d6d7.
CSeq: 22 ACK.
Call-ID: LJoKbYM0YY.
Max-Forwards: 69.
Content-Length: 0.
.

#
U 2015/07/22 10:46:19.706797 10.101.241.55:5060 -> 10.101.237.133:5060
SIP/2.0 407 Proxy Authentication Required.
Via: SIP/2.0/UDP 10.101.237.133;rport=5060;branch=z9hG4bK6f82.059bd882e24a3d3442c386d0596ea524.0.
Via: SIP/2.0/UDP 192.168.5.148:55529;received=10.50.210.9;branch=z9hG4bK.dI1VgySEM;rport=6574.
From: <sip:22 at voipdev.mydomain.net>;tag=AZWk8e87s.
To: sip:11 at voipdev.mydomain.net;tag=ce9090b83c058770a0b4b75c40ac0f09.d6d7.
CSeq: 22 INVITE.
Call-ID: LJoKbYM0YY.
Proxy-Authenticate: Digest realm="voipdev.mydomain.net", nonce="Va+t51WvrLslK8BVt3nSynqYq5rWNq58".
Server: kamailio (4.3.0 (x86_64/linux)).
Content-Length: 0.
.

#
U 2015/07/22 10:46:19.706874 10.101.237.133:5060 -> 10.101.241.55:5060
ACK sip:11 at voipdev.mydomain.net SIP/2.0.
Via: SIP/2.0/UDP 10.101.237.133;branch=z9hG4bK6f82.059bd882e24a3d3442c386d0596ea524.0.
From: <sip:22 at voipdev.mydomain.net>;tag=AZWk8e87s.
To: sip:11 at voipdev.mydomain.net;tag=ce9090b83c058770a0b4b75c40ac0f09.d6d7.
CSeq: 22 ACK.
Call-ID: LJoKbYM0YY.
Max-Forwards: 70.
Content-Length: 0.
.

#
U 2015/07/22 10:46:19.707012 10.101.237.133:5060 -> 10.50.210.9:6574
SIP/2.0 407 Proxy Authentication Required.
Via: SIP/2.0/UDP 192.168.5.148:55529;received=10.50.210.9;branch=z9hG4bK.dI1VgySEM;rport=6574.
From: <sip:22 at voipdev.mydomain.net>;tag=AZWk8e87s.
To: sip:11 at voipdev.mydomain.net;tag=ce9090b83c058770a0b4b75c40ac0f09.d6d7.
CSeq: 22 INVITE.
Call-ID: LJoKbYM0YY.
Proxy-Authenticate: Digest realm="voipdev.mydomain.net", nonce="Va+t51WvrLslK8BVt3nSynqYq5rWNq58".
Server: kamailio (4.3.0 (x86_64/linux)).
Content-Length: 0.
.

#
U 2015/07/22 10:46:19.749847 10.50.210.9:6574 -> 10.101.237.133:5060
ACK sip:11 at voipdev.mydomain.net SIP/2.0.
Via: SIP/2.0/UDP 192.168.5.148:55529;branch=z9hG4bK.dI1VgySEM;rport.
Call-ID: LJoKbYM0YY.
From: <sip:22 at voipdev.mydomain.net>;tag=AZWk8e87s.
To: <sip:11 at voipdev.mydomain.net>;tag=ce9090b83c058770a0b4b75c40ac0f09.d6d7.
Contact: <sip:22 at 10.50.210.9:6574>;+sip.instance="<urn:uuid:c1c7dbe5-7dac-4d3f-a496-af9fde38a0e7>".
Max-Forwards: 70.
CSeq: 22 ACK.
.

^Cexit
39 received, 0 dropped
[root at LbkamailioDev kamailio]#