<div dir="ltr">Hi Daniel,<div><br></div><div>Thank you for your prompt response!<br></div><div><br></div><div>I sent the wrong trace with the added transport=tcp test. Yes we tried to add the transport=tcp on config to overcome this issue but it was not resolved. I will contact the provider to ask them to add the transport on their 183 and I believe it will resolve the issue.</div><div>In case they cannot do this is there an alternative to bypass this? As per now we have the save issue also on our ACK and BYE replies we send to the provider which is logical.</div><div><br></div><div>Kind regards,</div><div>Angelo</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">Στις Τρί, 21 Σεπ 2021 στις 5:03 μ.μ., ο/η Daniel-Constantin Mierla <<a href="mailto:miconda@gmail.com">miconda@gmail.com</a>> έγραψε:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div>
<p>Hello,</p>
<p>the contact of the 183 has no transport parameter, which means it
is the default one, respectively UDP. If the Provider wants
traffic over TCP, the contact has to be with that transport
parameter.<br>
</p>
<p>I see that incoming PRACK has R-URI without transport parameter,
but the one to be forwarded has a malformed version where
transport=tcp is misplaced, probably due to a wrong config
operation. If you do it in kamailio.cfg, you have to append
";transport=tcp" to $ru (whole r-uri), not to $rU (only user part
of r-uri).</p>
<p>Cheers,<br>
Daniel<br>
</p>
<div>On 21.09.21 15:29, Angelo Sipper wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Correction
<div>UAC (OverTLS) ->(TLS)Kamailio1(UDP)->
(UDP)Kamailio2(TCP)-> (TCP)Provider<br>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">Στις Τρί, 21 Σεπ 2021 στις
4:28 μ.μ., ο/η Angelo Sipper <<a href="mailto:sippro97@gmail.com" target="_blank">sippro97@gmail.com</a>>
έγραψε:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="ltr">
<div>Hello,</div>
<div><br>
</div>
<div>We have the following setup and I am having trouble
passing the PRACK with correct protocol to the provider.</div>
<div><br>
</div>
<div>UAC (OverTLS) ->(UDP)Kamailio1 (UDP)->
(UDP)Kamailio2 (TCP)-> (TCP)Provider</div>
<div><br>
</div>
<div>UAC : 10.2.1.160 NATED to <a href="http://50.50.50.50:5065/" target="_blank">100.100.100.61</a> (TLS)</div>
<div>Kamailio1 Sockets: <a href="http://170.170.170.210:5061/" target="_blank">50.50.50.210:5061</a> (TLS),<a href="http://170.170.170.210:5060/" target="_blank">50.50.50.210:5060</a> (UDP)<br>
</div>
<div>Kamailio2 Sockets: 50.50.50.182<a href="http://170.170.170.170:5060/" target="_blank">:5060</a> (UDP) 50.50.50.182<a href="http://170.170.170.170:5060/" target="_blank">:5080</a> (TCP)</div>
<div>Provider: <a href="http://200.200.200.193:5060/" target="_blank">200.200.200.209:5060</a> (TCP)</div>
<div><br>
</div>
<div>We use dispatcher on Kamailio1 & Kamailio2</div>
<div>The invite goes fine from UCA up to the provider and
the provider responses arrive to UAC fine.</div>
<div>The PRACK from UAC to kamailio1 goes fine to Kamaili02
but, Kamailio2 uses the UDP socket to send to the provider
so the PRACK does not arrive to the provider and the call
is canceled.</div>
<div>If the provider is on UDP everything works fine.<br>
</div>
<div><br>
</div>
<div>Below I have the trace. What should I look for in the
config to resolve this wrong protocol/socket on the PRACK?<br>
</div>
<div><br>
</div>
<div>Kamailio2 Details:</div>
<div><br>
</div>
<div>Sockets</div>
<div>
<div>======</div>
<div>listen=udp:<a href="http://50.50.50.182:5060" target="_blank">50.50.50.182:5060</a><br>
listen=tcp: <a href="http://50.50.50.182:5080" target="_blank">50.50.50.182:5080</a><br>
</div>
</div>
<div><br>
</div>
<div>On the rr module I have</div>
<div>==================</div>
<div>modparam("rr", "enable_double_rr", 1)<br>
</div>
<div>modparam("rr", "append_fromtag", 1)<br>
</div>
<div>modparam("rr", "enable_full_lr", 1)<br>
</div>
<div><br>
</div>
<div>CONFIG REQINIT & WITHINDLG PARTS<br>
</div>
<div>================================</div>
<div>
<div>route[REQINIT] {<br>
</div>
</div>
<div><br>
set_reply_no_connect();<br>
force_rport();<br>
<br>
if (!mf_process_maxfwd_header("10")) {<br>
xlog("L_ERROR","Too Many Hops Rejecting!"); <br>
sl_send_reply("483","Too Many Hops");<br>
exit;<br>
}<br>
<br>
if(is_method("OPTIONS") && uri==myself &&
$rU==$null) {<br>
sl_send_reply("200","Keepalive");<br>
exit;<br>
}<br>
<br>
if(!sanity_check("1511", "7")) {<br>
xlog("Malformed SIP message from $si:$sp sanity 1511\n");<br>
exit;<br>
}<br>
<br>
if(!sanity_check("17895", "7")) {<br>
xlog("Malformed SIP request from $si:$sp sanity 17895\n");<br>
exit;<br>
}<br>
}<br>
</div>
<div><br>
</div>
<div>route[WITHINDLG] {<br>
</div>
<div> if (!has_totag()) return;<br>
<br>
if (loose_route()) {<br>
<br>
if (is_method("BYE")) {<br>
rtpengine_query();<br>
rtpengine_delete();<br>
}<br>
route(RELAY_OUT);<br>
}<br>
<br>
if ( is_method("ACK") ) {<br>
#if (t_lookup_request()) {<br>
if (t_check_trans()) {<br>
route(RELAY_OUT);<br>
exit;<br>
} else {<br>
# ACK without matching transaction ... ignore and discard<br>
exit;<br>
}<br>
}<br>
<br>
sl_send_reply("404","Not Allowed");<br>
exit;<br>
}<br>
</div>
<div><br>
</div>
<div>TRACE</div>
<div>======</div>
<div> <a href="http://50.50.50.210:5060" target="_blank">50.50.50.210:5060</a>
<a href="http://50.50.50.182:5060" target="_blank">50.50.50.182:5060</a>
<a href="http://50.50.50.182:32818" target="_blank">50.50.50.182:32818</a>
<a href="http://200.200.200.209:5060" target="_blank">200.200.200.209:5060</a><br>
qqqqqqqqqqwqqqqqqq qqqqqqqqqqwqqqqqqq
qqqqqqqqqqwqqqqqqqq
qqqqqqqqqqqwqqqqqqqqq<br>
a 15:31:11.787490 x INVITE (SDP) x
x x<br>
a +0.003099 x qqqqqqqqqqqqqqqqqqqqqqqqqq> x
x x<br>
a 15:31:11.790589 x 100 trying -- your call is x
x x<br>
a +0.002220 x <qqqqqqqqqqqqqqqqqqqqqqqqqq x
x x<br>
a 15:31:11.792809 x x
x INVITE (SDP) x<br>
a +0.020725 x x
x qqqqqqqqqqqqqqqqqqqqqqqqqq> x<br>
a 15:31:11.813534 x x
x 100 Trying x<br>
a +2.628884 x x
x <qqqqqqqqqqqqqqqqqqqqqqqqqq x<br>
a 15:31:14.442418 x x
x 183 Session Progress (SDP) x<br>
a +0.001572 x x
x <qqqqqqqqqqqqqqqqqqqqqqqqqq x<br>
a 15:31:14.443990 x 183 Session Progress (SDP) x
x x<br>
a +0.299221 x <qqqqqqqqqqqqqqqqqqqqqqqqqq x
x x<br>
a 15:31:14.743211 x PRACK x
x x<br>
a +0.043114 x qqqqqqqqqqqqqqqqqqqqqqqqqq> x
x x<br>
a 15:31:14.786325 x x
PRACK x<br>
a +0.448104 x x
qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq>
x<br>
a 15:31:15.234429 x PRACK x
x x<br>
a +0.045697 x qqqqqqqqqqqqqqqqqqqqqqqq>>>
x x
x<br>
a 15:31:15.280126 x x
PRACK x<br>
a +0.954153 x x
qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq>>>
x<br>
a 15:31:16.234279 x PRACK x
x x<br>
a +0.045832 x qqqqqqqqqqqqqqqqqqqqqqqq>>>
x x
x<br>
a 15:31:16.280111 x x
PRACK x<br>
a +1.954170 x x
qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq>>>
x<br>
a 15:31:18.234281 x PRACK x
x x<br>
a +0.045839 x qqqqqqqqqqqqqqqqqqqqqqqq>>>
x x
x<br>
a 15:31:18.280120 x x
PRACK x<br>
a +1.829676 x x
qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq>>>
x<br>
a 15:31:20.109796 x x
x 183 Session Progress (SDP) x<br>
a +0.001460 x x
x
<<<qqqqqqqqqqqqqqqqqqqqqqqq x<br>
a 15:31:20.111256 x 183 Session Progress (SDP) x
x x<br>
a +2.123075 x <<<qqqqqqqqqqqqqqqqqqqqqqqq
x x
x<br>
a 15:31:22.234331 x PRACK x
x x<br>
a +0.045825 x qqqqqqqqqqqqqqqqqqqqqqqq>>>
x x
x<br>
a 15:31:22.280156 x x
PRACK x<br>
a +2.239640 x x
qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq>>>
x<br>
a 15:31:24.519796 x x
x 486 Busy Here x<br>
a +0.000555 x x
x <qqqqqqqqqqqqqqqqqqqqqqqqqq x<br>
a 15:31:24.520351 x x
x ACK x<br>
a +0.008965 x x
x qqqqqqqqqqqqqqqqqqqqqqqqqq> x<br>
a 15:31:24.529316 x 486 Busy Here x
x x<br>
a +0.000835 x <qqqqqqqqqqqqqqqqqqqqqqqqqq x
x x<br>
a 15:31:24.530151 x ACK x
x x<br>
a +1.704184 x qqqqqqqqqqqqqqqqqqqqqqqqqq> x
x x<br>
a 15:31:26.234335 x PRACK x
x x<br>
a +0.045856 x qqqqqqqqqqqqqqqqqqqqqqqqqq> x
x x<br>
a 15:31:26.280191 x x
PRACK x<br>
a +3.954734 x x
qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq>>>
x<br>
a 15:31:30.234925 x PRACK x
x x<br>
x +0.045279 x qqqqqqqqqqqqqqqqqqqqqqqq>>>
x x
x<br>
x 15:31:30.280204 x x
PRACK x<br>
x +3.954116 x x
qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq>>>
x<br>
x 15:31:34.234320 x PRACK x
x x <br>
</div>
<div><br>
</div>
<div><br>
</div>
<div>2021/09/21 15:31:11.787490 <a href="http://50.50.50.210:5060" target="_blank">50.50.50.210:5060</a> -> <a href="http://50.50.50.182:5060" target="_blank">50.50.50.182:5060</a><br>
INVITE <a href="http://sip:123456789@sip.mydomain.com:5060" target="_blank">sip:123456789@sip.mydomain.com:5060</a>
SIP/2.0<br>
Record-Route:
<a><sip:50.50.50.210;r2=on;lr;ftag=73622588a6084d8ba1bca54781e5094d;vsf=AAAAAFpUAgECBwAABnEBB3ZdWEIAQkVFS0BHX2ljZS5ldQ--;vst=AAAAAAAAAAAKCQ8ABAkHCAYKAgdxQFpGbkJCRktDREFYU1AAV0Qw;did=e8e.bb7;nat=yes></a><br>
Record-Route:
<a><sip:50.50.50.210:5061;transport=tls;r2=on;lr;ftag=73622588a6084d8ba1bca54781e5094d;vsf=AAAAAFpUAgECBwAABnEBB3ZdWEIAQkVFS0BHX2ljZS5ldQ--;vst=AAAAAAAAAAAKCQ8ABAkHCAYKAgdxQFpGbkJCRktDREFYU1AAV0Qw;did=e8e.bb7;nat=yes></a><br>
Via: SIP/2.0/UDP
50.50.50.210;branch=z9hG4bK37fe.f05cee0feff15d488a12d3758cece7ae.0;i=baa3<br>
Via: SIP/2.0/TLS
10.2.1.160:58568;received=100.100.100.61;rport=48572;branch=z9hG4bKPj472f07568b924214ada83ddfb0fb12b6;alias<br>
Max-Forwards: 69<br>
From: 987654321 <<a href="mailto:sip%3A987654321@sip.mydomain.com" target="_blank">sip:987654321@sip.mydomain.com</a>>;tag=73622588a6084d8ba1bca54781e5094d<br>
To: <<a href="mailto:sip%3A123456789@sip.mydomain.com" target="_blank">sip:123456789@sip.mydomain.com</a>><br>
Contact: "MyUserNAme"
<a><sip:mycustomerid@10.2.1.160:58568;transport=TLS;ob;alias=100.100.100.61~48572~3></a><br>
Call-ID: 846ffb2f076848c5b8edc876fa1c0d9b<br>
CSeq: 14320 INVITE<br>
Allow: PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, INFO,
SUBSCRIBE, NOTIFY, REFER, MESSAGE, OPTIONS<br>
Supported: replaces, 100rel, timer, norefersub<br>
Session-Expires: 1800<br>
Min-SE: 90<br>
User-Agent: MicroSIP/3.20.5<br>
Content-Type: application/sdp<br>
Content-Length: 326<br>
P-Asserted-Identity: <<a href="mailto:sip%3A987654321@sip.mydomain.com" target="_blank">sip:987654321@sip.mydomain.com</a>><br>
<br>
v=0<br>
o=- 3841227071 3841227071 IN IP4 50.50.50.215<br>
s=pjmedia<br>
b=AS:84<br>
t=0 0<br>
a=X-nat:0<br>
m=audio 36448 RTP/AVP 8 0 101<br>
c=IN IP4 50.50.50.215<br>
b=TIAS:64000<br>
a=ssrc:2024148033 cname:4f2468fd611910fa<br>
a=rtpmap:8 PCMA/8000<br>
a=rtpmap:0 PCMU/8000<br>
a=rtpmap:101 telephone-event/8000<br>
a=fmtp:101 0-16<br>
a=sendrecv<br>
a=rtcp:36449<br>
<br>
<br>
2021/09/21 15:31:11.790589 <a href="http://50.50.50.182:5060" target="_blank">50.50.50.182:5060</a> -> <a href="http://50.50.50.210:5060" target="_blank">50.50.50.210:5060</a><br>
SIP/2.0 100 trying -- your call is important to us<br>
Via: SIP/2.0/UDP
50.50.50.210;branch=z9hG4bK37fe.f05cee0feff15d488a12d3758cece7ae.0;i=baa3;rport=5060<br>
Via: SIP/2.0/TLS
10.2.1.160:58568;received=100.100.100.61;rport=48572;branch=z9hG4bKPj472f07568b924214ada83ddfb0fb12b6;alias<br>
From: 987654321 <<a href="mailto:sip%3A987654321@sip.mydomain.com" target="_blank">sip:987654321@sip.mydomain.com</a>>;tag=73622588a6084d8ba1bca54781e5094d<br>
To: <<a href="mailto:sip%3A123456789@sip.mydomain.com" target="_blank">sip:123456789@sip.mydomain.com</a>><br>
Call-ID: 846ffb2f076848c5b8edc876fa1c0d9b<br>
CSeq: 14320 INVITE<br>
Server: myserver<br>
Content-Length: 0<br>
<br>
<br>
2021/09/21 15:31:11.792809 <a href="http://50.50.50.182:32818" target="_blank">50.50.50.182:32818</a> -> <a href="http://200.200.200.209:5060" target="_blank">200.200.200.209:5060</a><br>
INVITE <a href="http://sip:123456789@sip.mydomain.com:5060" target="_blank">sip:123456789@sip.mydomain.com:5060</a>
SIP/2.0<br>
Record-Route:
<a><sip:50.50.50.182:5080;transport=tcp;r2=on;lr=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1></a><br>
Record-Route:
<a><sip:50.50.50.182;r2=on;lr=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1></a><br>
Record-Route:
<a><sip:50.50.50.210;r2=on;lr;ftag=73622588a6084d8ba1bca54781e5094d;vsf=AAAAAFpUAgECBwAABnEBB3ZdWEIAQkVFS0BHX2ljZS5ldQ--;vst=AAAAAAAAAAAKCQ8ABAkHCAYKAgdxQFpGbkJCRktDREFYU1AAV0Qw;did=e8e.bb7;nat=yes></a><br>
Record-Route:
<a><sip:50.50.50.210:5061;transport=tls;r2=on;lr;ftag=73622588a6084d8ba1bca54781e5094d;vsf=AAAAAFpUAgECBwAABnEBB3ZdWEIAQkVFS0BHX2ljZS5ldQ--;vst=AAAAAAAAAAAKCQ8ABAkHCAYKAgdxQFpGbkJCRktDREFYU1AAV0Qw;did=e8e.bb7;nat=yes></a><br>
Via: SIP/2.0/TCP
50.50.50.182:5080;branch=z9hG4bK37fe.254ecab744d678154779037580c59731.0<br>
Via: SIP/2.0/UDP
50.50.50.210;rport=5060;branch=z9hG4bK37fe.f05cee0feff15d488a12d3758cece7ae.0;i=baa3<br>
Via: SIP/2.0/TLS
10.2.1.160:58568;received=100.100.100.61;rport=48572;branch=z9hG4bKPj472f07568b924214ada83ddfb0fb12b6;alias<br>
Max-Forwards: 68<br>
From: 987654321 <<a href="mailto:sip%3A987654321@sip.mydomain.com" target="_blank">sip:987654321@sip.mydomain.com</a>>;tag=73622588a6084d8ba1bca54781e5094d<br>
To: <<a href="mailto:sip%3A123456789@sip.mydomain.com" target="_blank">sip:123456789@sip.mydomain.com</a>><br>
Contact: "MyUserNAme"
<a><sip:mycustomerid@10.2.1.160:58568;transport=TLS;ob;alias=100.100.100.61~48572~3></a><br>
Call-ID: 846ffb2f076848c5b8edc876fa1c0d9b<br>
CSeq: 14320 INVITE<br>
Allow: PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, INFO,
SUBSCRIBE, NOTIFY, REFER, MESSAGE, OPTIONS<br>
Supported: replaces, 100rel, timer, norefersub<br>
Session-Expires: 1800<br>
Min-SE: 90<br>
Content-Type: application/sdp<br>
Content-Length: 326<br>
P-Asserted-Identity: <<a href="mailto:sip%3A987654321@sip.mydomain.com" target="_blank">sip:987654321@sip.mydomain.com</a>><br>
<br>
v=0<br>
o=- 3841227071 3841227071 IN IP4 50.50.50.183<br>
s=pjmedia<br>
b=AS:84<br>
t=0 0<br>
a=X-nat:0<br>
m=audio 29308 RTP/AVP 8 0 101<br>
c=IN IP4 50.50.50.183<br>
b=TIAS:64000<br>
a=ssrc:2024148033 cname:4f2468fd611910fa<br>
a=rtpmap:8 PCMA/8000<br>
a=rtpmap:0 PCMU/8000<br>
a=rtpmap:101 telephone-event/8000<br>
a=fmtp:101 0-16<br>
a=sendrecv<br>
a=rtcp:29309<br>
<br>
<br>
2021/09/21 15:31:11.813534 <a href="http://200.200.200.209:5060" target="_blank">200.200.200.209:5060</a> -> <a href="http://50.50.50.182:32818" target="_blank">50.50.50.182:32818</a><br>
SIP/2.0 100 Trying<br>
Via: SIP/2.0/TCP
50.50.50.182:5080;branch=z9hG4bK37fe.254ecab744d678154779037580c59731.0<br>
Via: SIP/2.0/UDP
50.50.50.210;rport=5060;branch=z9hG4bK37fe.f05cee0feff15d488a12d3758cece7ae.0;i=baa3<br>
Via: SIP/2.0/TLS
10.2.1.160:58568;received=100.100.100.61;rport=48572;branch=z9hG4bKPj472f07568b924214ada83ddfb0fb12b6;alias<br>
From: 987654321 <<a href="mailto:sip%3A987654321@sip.mydomain.com" target="_blank">sip:987654321@sip.mydomain.com</a>>;tag=73622588a6084d8ba1bca54781e5094d<br>
To: <<a href="mailto:sip%3A123456789@sip.mydomain.com" target="_blank">sip:123456789@sip.mydomain.com</a>>;tag=gK0d8c9073<br>
Call-ID: 846ffb2f076848c5b8edc876fa1c0d9b<br>
CSeq: 14320 INVITE<br>
Content-Length: 0<br>
<br>
<br>
2021/09/21 15:31:14.442418 <a href="http://200.200.200.209:5060" target="_blank">200.200.200.209:5060</a> -> <a href="http://50.50.50.182:32818" target="_blank">50.50.50.182:32818</a><br>
SIP/2.0 183 Session Progress<br>
Via: SIP/2.0/TCP
50.50.50.182:5080;branch=z9hG4bK37fe.254ecab744d678154779037580c59731.0<br>
Via: SIP/2.0/UDP
50.50.50.210;rport=5060;branch=z9hG4bK37fe.f05cee0feff15d488a12d3758cece7ae.0;i=baa3<br>
Via: SIP/2.0/TLS
10.2.1.160:58568;received=100.100.100.61;rport=48572;branch=z9hG4bKPj472f07568b924214ada83ddfb0fb12b6;alias<br>
From: 987654321 <<a href="mailto:sip%3A987654321@sip.mydomain.com" target="_blank">sip:987654321@sip.mydomain.com</a>>;tag=73622588a6084d8ba1bca54781e5094d<br>
To: <<a href="mailto:sip%3A123456789@sip.mydomain.com" target="_blank">sip:123456789@sip.mydomain.com</a>>;tag=gK0d8c9073<br>
Call-ID: 846ffb2f076848c5b8edc876fa1c0d9b<br>
CSeq: 14320 INVITE<br>
Record-Route:
<a><sip:50.50.50.182:5080;transport=tcp;r2=on;lr=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1></a><br>
Record-Route:
<a><sip:50.50.50.182:5060;r2=on;lr=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1></a><br>
Record-Route:
<a><sip:50.50.50.210:5060;r2=on;lr;ftag=73622588a6084d8ba1bca54781e5094d;vsf=AAAAAFpUAgECBwAABnEBB3ZdWEIAQkVFS0BHX2ljZS5ldQ--;vst=AAAAAAAAAAAKCQ8ABAkHCAYKAgdxQFpGbkJCRktDREFYU1AAV0Qw;did=e8e.bb7;nat=yes></a><br>
Record-Route:
<a><sip:50.50.50.210:5061;transport=tls;r2=on;lr;ftag=73622588a6084d8ba1bca54781e5094d;vsf=AAAAAFpUAgECBwAABnEBB3ZdWEIAQkVFS0BHX2ljZS5ldQ--;vst=AAAAAAAAAAAKCQ8ABAkHCAYKAgdxQFpGbkJCRktDREFYU1AAV0Qw;did=e8e.bb7;nat=yes></a><br>
Contact: <<a href="http://sip:123456789@200.200.200.209:5060" target="_blank">sip:123456789@200.200.200.209:5060</a>><br>
Allow: INVITE,ACK,CANCEL,BYE,INFO,PRACK,UPDATE,OPTIONS<br>
Require: 100rel<br>
RSeq: 1509<br>
Content-Length: 241<br>
Content-Disposition: session; handling=required<br>
Content-Type: application/sdp<br>
<br>
v=0<br>
o=Sonus_UAC 12038 7929 IN IP4 200.200.200.209<br>
s=SIP Media Capabilities<br>
c=IN IP4 200.200.200.212<br>
t=0 0<br>
m=audio 17366 RTP/AVP 8 101<br>
a=rtpmap:8 PCMA/8000<br>
a=rtpmap:101 telephone-event/8000<br>
a=fmtp:101 0-15<br>
a=sendrecv<br>
a=maxptime:20<br>
<br>
<br>
2021/09/21 15:31:14.443990 <a href="http://50.50.50.182:5060" target="_blank">50.50.50.182:5060</a> -> <a href="http://50.50.50.210:5060" target="_blank">50.50.50.210:5060</a><br>
SIP/2.0 183 Session Progress<br>
Via: SIP/2.0/UDP
50.50.50.210;rport=5060;branch=z9hG4bK37fe.f05cee0feff15d488a12d3758cece7ae.0;i=baa3<br>
Via: SIP/2.0/TLS
10.2.1.160:58568;received=100.100.100.61;rport=48572;branch=z9hG4bKPj472f07568b924214ada83ddfb0fb12b6;alias<br>
From: 987654321 <<a href="mailto:sip%3A987654321@sip.mydomain.com" target="_blank">sip:987654321@sip.mydomain.com</a>>;tag=73622588a6084d8ba1bca54781e5094d<br>
To: <<a href="mailto:sip%3A123456789@sip.mydomain.com" target="_blank">sip:123456789@sip.mydomain.com</a>>;tag=gK0d8c9073<br>
Call-ID: 846ffb2f076848c5b8edc876fa1c0d9b<br>
CSeq: 14320 INVITE<br>
Record-Route:
<a><sip:50.50.50.182:5080;transport=tcp;r2=on;lr=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1></a><br>
Record-Route:
<a><sip:50.50.50.182:5060;r2=on;lr=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1></a><br>
Record-Route:
<a><sip:50.50.50.210:5060;r2=on;lr;ftag=73622588a6084d8ba1bca54781e5094d;vsf=AAAAAFpUAgECBwAABnEBB3ZdWEIAQkVFS0BHX2ljZS5ldQ--;vst=AAAAAAAAAAAKCQ8ABAkHCAYKAgdxQFpGbkJCRktDREFYU1AAV0Qw;did=e8e.bb7;nat=yes></a><br>
Record-Route:
<a><sip:50.50.50.210:5061;transport=tls;r2=on;lr;ftag=73622588a6084d8ba1bca54781e5094d;vsf=AAAAAFpUAgECBwAABnEBB3ZdWEIAQkVFS0BHX2ljZS5ldQ--;vst=AAAAAAAAAAAKCQ8ABAkHCAYKAgdxQFpGbkJCRktDREFYU1AAV0Qw;did=e8e.bb7;nat=yes></a><br>
Contact: <<a href="http://sip:123456789@200.200.200.209:5060" target="_blank">sip:123456789@200.200.200.209:5060</a>><br>
Allow: INVITE,ACK,CANCEL,BYE,INFO,PRACK,UPDATE,OPTIONS<br>
Require: 100rel<br>
RSeq: 1509<br>
Content-Length: 253<br>
Content-Disposition: session; handling=required<br>
Content-Type: application/sdp<br>
<br>
v=0<br>
o=Sonus_UAC 12038 7929 IN IP4 50.50.50.183<br>
s=SIP Media Capabilities<br>
c=IN IP4 50.50.50.183<br>
t=0 0<br>
m=audio 29320 RTP/AVP 8 101<br>
a=maxptime:20<br>
a=rtpmap:8 PCMA/8000<br>
a=rtpmap:101 telephone-event/8000<br>
a=fmtp:101 0-15<br>
a=sendrecv<br>
a=rtcp:29321<br>
<br>
<br>
2021/09/21 15:31:14.743211 <a href="http://50.50.50.210:5060" target="_blank">50.50.50.210:5060</a> -> <a href="http://50.50.50.182:5060" target="_blank">50.50.50.182:5060</a><br>
PRACK <a href="http://sip:123456789@200.200.200.209:5060" target="_blank">sip:123456789@200.200.200.209:5060</a>
SIP/2.0<br>
Via: SIP/2.0/UDP
50.50.50.210;branch=z9hG4bK47fe.067d9577e9ab3e30e01745a2cf73b7a4.0;i=baa3<br>
Via: SIP/2.0/TLS
10.2.1.160:58568;received=100.100.100.61;rport=48572;branch=z9hG4bKPj9ab94c339144428bb7ada63b133f2c12;alias<br>
Max-Forwards: 69<br>
From: "MyUserNAme" <<a href="mailto:sip%3A987654321@sip.mydomain.com" target="_blank">sip:987654321@sip.mydomain.com</a>>;tag=73622588a6084d8ba1bca54781e5094d<br>
To: <<a href="mailto:sip%3A123456789@sip.mydomain.com" target="_blank">sip:123456789@sip.mydomain.com</a>>;tag=gK0d8c9073<br>
Call-ID: 846ffb2f076848c5b8edc876fa1c0d9b<br>
CSeq: 14321 PRACK<br>
Route:
<a><sip:50.50.50.182:5060;lr;r2=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1></a><br>
Route:
<a><sip:50.50.50.182:5080;transport=tcp;lr;r2=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1></a><br>
RAck: 1509 14320 INVITE<br>
Content-Length: 0<br>
<br>
<br>
2021/09/21 15:31:14.786325 <a href="http://50.50.50.182:5060" target="_blank">50.50.50.182:5060</a> -> <a href="http://200.200.200.209:5060" target="_blank">200.200.200.209:5060</a><br>
PRACK <a>sip:123456789transport=</a><a href="http://tcp@200.200.200.209:5060" target="_blank">tcp@200.200.200.209:5060</a>
SIP/2.0<br>
Via: SIP/2.0/UDP
50.50.50.182;branch=z9hG4bK47fe.3406fe45bb75c3e955b6aa67e53aff58.0<br>
Via: SIP/2.0/UDP
50.50.50.210;rport=5060;branch=z9hG4bK47fe.067d9577e9ab3e30e01745a2cf73b7a4.0;i=baa3<br>
Via: SIP/2.0/TLS
10.2.1.160:58568;received=100.100.100.61;rport=48572;branch=z9hG4bKPj9ab94c339144428bb7ada63b133f2c12;alias<br>
Max-Forwards: 68<br>
From: "MyUserNAme" <<a href="mailto:sip%3A987654321@sip.mydomain.com" target="_blank">sip:987654321@sip.mydomain.com</a>>;tag=73622588a6084d8ba1bca54781e5094d<br>
To: <<a href="mailto:sip%3A123456789@sip.mydomain.com" target="_blank">sip:123456789@sip.mydomain.com</a>>;tag=gK0d8c9073<br>
Call-ID: 846ffb2f076848c5b8edc876fa1c0d9b<br>
CSeq: 14321 PRACK<br>
RAck: 1509 14320 INVITE<br>
Content-Length: 0<br>
<br>
<br>
2021/09/21 15:31:15.234429 <a href="http://50.50.50.210:5060" target="_blank">50.50.50.210:5060</a> -> <a href="http://50.50.50.182:5060" target="_blank">50.50.50.182:5060</a><br>
PRACK <a href="http://sip:123456789@200.200.200.209:5060" target="_blank">sip:123456789@200.200.200.209:5060</a>
SIP/2.0<br>
Via: SIP/2.0/UDP
50.50.50.210;branch=z9hG4bK47fe.067d9577e9ab3e30e01745a2cf73b7a4.0;i=baa3<br>
Via: SIP/2.0/TLS
10.2.1.160:58568;received=100.100.100.61;rport=48572;branch=z9hG4bKPj9ab94c339144428bb7ada63b133f2c12;alias<br>
Max-Forwards: 69<br>
From: "MyUserNAme" <<a href="mailto:sip%3A987654321@sip.mydomain.com" target="_blank">sip:987654321@sip.mydomain.com</a>>;tag=73622588a6084d8ba1bca54781e5094d<br>
To: <<a href="mailto:sip%3A123456789@sip.mydomain.com" target="_blank">sip:123456789@sip.mydomain.com</a>>;tag=gK0d8c9073<br>
Call-ID: 846ffb2f076848c5b8edc876fa1c0d9b<br>
CSeq: 14321 PRACK<br>
Route:
<a><sip:50.50.50.182:5060;lr;r2=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1></a><br>
Route:
<a><sip:50.50.50.182:5080;transport=tcp;lr;r2=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1></a><br>
RAck: 1509 14320 INVITE<br>
Content-Length: 0<br>
<br>
<br>
2021/09/21 15:31:15.280126 <a href="http://50.50.50.182:5060" target="_blank">50.50.50.182:5060</a> -> <a href="http://200.200.200.209:5060" target="_blank">200.200.200.209:5060</a><br>
PRACK <a>sip:123456789transport=</a><a href="http://tcp@200.200.200.209:5060" target="_blank">tcp@200.200.200.209:5060</a>
SIP/2.0<br>
Via: SIP/2.0/UDP
50.50.50.182;branch=z9hG4bK47fe.3406fe45bb75c3e955b6aa67e53aff58.0<br>
Via: SIP/2.0/UDP
50.50.50.210;rport=5060;branch=z9hG4bK47fe.067d9577e9ab3e30e01745a2cf73b7a4.0;i=baa3<br>
Via: SIP/2.0/TLS
10.2.1.160:58568;received=100.100.100.61;rport=48572;branch=z9hG4bKPj9ab94c339144428bb7ada63b133f2c12;alias<br>
Max-Forwards: 68<br>
From: "MyUserNAme" <<a href="mailto:sip%3A987654321@sip.mydomain.com" target="_blank">sip:987654321@sip.mydomain.com</a>>;tag=73622588a6084d8ba1bca54781e5094d<br>
To: <<a href="mailto:sip%3A123456789@sip.mydomain.com" target="_blank">sip:123456789@sip.mydomain.com</a>>;tag=gK0d8c9073<br>
Call-ID: 846ffb2f076848c5b8edc876fa1c0d9b<br>
CSeq: 14321 PRACK<br>
RAck: 1509 14320 INVITE<br>
Content-Length: 0<br>
<br>
<br>
2021/09/21 15:31:16.234279 <a href="http://50.50.50.210:5060" target="_blank">50.50.50.210:5060</a> -> <a href="http://50.50.50.182:5060" target="_blank">50.50.50.182:5060</a><br>
PRACK <a href="http://sip:123456789@200.200.200.209:5060" target="_blank">sip:123456789@200.200.200.209:5060</a>
SIP/2.0<br>
Via: SIP/2.0/UDP
50.50.50.210;branch=z9hG4bK47fe.067d9577e9ab3e30e01745a2cf73b7a4.0;i=baa3<br>
Via: SIP/2.0/TLS
10.2.1.160:58568;received=100.100.100.61;rport=48572;branch=z9hG4bKPj9ab94c339144428bb7ada63b133f2c12;alias<br>
Max-Forwards: 69<br>
From: "MyUserNAme" <<a href="mailto:sip%3A987654321@sip.mydomain.com" target="_blank">sip:987654321@sip.mydomain.com</a>>;tag=73622588a6084d8ba1bca54781e5094d<br>
To: <<a href="mailto:sip%3A123456789@sip.mydomain.com" target="_blank">sip:123456789@sip.mydomain.com</a>>;tag=gK0d8c9073<br>
Call-ID: 846ffb2f076848c5b8edc876fa1c0d9b<br>
CSeq: 14321 PRACK<br>
Route:
<a><sip:50.50.50.182:5060;lr;r2=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1></a><br>
Route:
<a><sip:50.50.50.182:5080;transport=tcp;lr;r2=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1></a><br>
RAck: 1509 14320 INVITE<br>
Content-Length: 0<br>
<br>
<br>
2021/09/21 15:31:16.280111 <a href="http://50.50.50.182:5060" target="_blank">50.50.50.182:5060</a> -> <a href="http://200.200.200.209:5060" target="_blank">200.200.200.209:5060</a><br>
PRACK <a>sip:123456789transport=</a><a href="http://tcp@200.200.200.209:5060" target="_blank">tcp@200.200.200.209:5060</a>
SIP/2.0<br>
Via: SIP/2.0/UDP
50.50.50.182;branch=z9hG4bK47fe.3406fe45bb75c3e955b6aa67e53aff58.0<br>
Via: SIP/2.0/UDP
50.50.50.210;rport=5060;branch=z9hG4bK47fe.067d9577e9ab3e30e01745a2cf73b7a4.0;i=baa3<br>
Via: SIP/2.0/TLS
10.2.1.160:58568;received=100.100.100.61;rport=48572;branch=z9hG4bKPj9ab94c339144428bb7ada63b133f2c12;alias<br>
Max-Forwards: 68<br>
From: "MyUserNAme" <<a href="mailto:sip%3A987654321@sip.mydomain.com" target="_blank">sip:987654321@sip.mydomain.com</a>>;tag=73622588a6084d8ba1bca54781e5094d<br>
To: <<a href="mailto:sip%3A123456789@sip.mydomain.com" target="_blank">sip:123456789@sip.mydomain.com</a>>;tag=gK0d8c9073<br>
Call-ID: 846ffb2f076848c5b8edc876fa1c0d9b<br>
CSeq: 14321 PRACK<br>
RAck: 1509 14320 INVITE<br>
Content-Length: 0<br>
<br>
<br>
2021/09/21 15:31:18.234281 <a href="http://50.50.50.210:5060" target="_blank">50.50.50.210:5060</a> -> <a href="http://50.50.50.182:5060" target="_blank">50.50.50.182:5060</a><br>
PRACK <a href="http://sip:123456789@200.200.200.209:5060" target="_blank">sip:123456789@200.200.200.209:5060</a>
SIP/2.0<br>
Via: SIP/2.0/UDP
50.50.50.210;branch=z9hG4bK47fe.067d9577e9ab3e30e01745a2cf73b7a4.0;i=baa3<br>
Via: SIP/2.0/TLS
10.2.1.160:58568;received=100.100.100.61;rport=48572;branch=z9hG4bKPj9ab94c339144428bb7ada63b133f2c12;alias<br>
Max-Forwards: 69<br>
From: "MyUserNAme" <<a href="mailto:sip%3A987654321@sip.mydomain.com" target="_blank">sip:987654321@sip.mydomain.com</a>>;tag=73622588a6084d8ba1bca54781e5094d<br>
To: <<a href="mailto:sip%3A123456789@sip.mydomain.com" target="_blank">sip:123456789@sip.mydomain.com</a>>;tag=gK0d8c9073<br>
Call-ID: 846ffb2f076848c5b8edc876fa1c0d9b<br>
CSeq: 14321 PRACK<br>
Route:
<a><sip:50.50.50.182:5060;lr;r2=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1></a><br>
Route:
<a><sip:50.50.50.182:5080;transport=tcp;lr;r2=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1></a><br>
RAck: 1509 14320 INVITE<br>
Content-Length: 0<br>
<br>
</div>
<div>Any help will be much appreciated.</div>
<div><br>
</div>
<div>Kind regards,<br>
</div>
<div>Angelo</div>
</div>
</blockquote>
</div>
<br>
<fieldset></fieldset>
<pre>__________________________________________________________
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</pre>
</blockquote>
<pre cols="72">--
Daniel-Constantin Mierla -- <a href="http://www.asipto.com" target="_blank">www.asipto.com</a>
<a href="http://www.twitter.com/miconda" target="_blank">www.twitter.com/miconda</a> -- <a href="http://www.linkedin.com/in/miconda" target="_blank">www.linkedin.com/in/miconda</a>
Kamailio Advanced Training - Online
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* <a href="https://www.asipto.com/sw/kamailio-advanced-training-online/" target="_blank">https://www.asipto.com/sw/kamailio-advanced-training-online/</a></pre>
</div>
</blockquote></div>