[SR-Users] PRACK with UDP to TCP translation send over wrong protocol
Angelo Sipper
sippro97 at gmail.com
Wed Sep 22 18:00:45 CEST 2021
Hi Daniel,
Provider managed to add the transport=tcp in the contact as you suggested
and call flow was fine but, another issue came up and I believe it is again
TCP that causes this issue.
If our side terminates the call, our Kamailio2 sends the BYE and it is
accepted from the provider side terminating the call correctly.
When the far end terminates the call, providers send a BYE that we never
receive from the provider and our UAC remains on call. If our UAC
terminates the call after the far end terminates the call we receive a 481
from the provider as the call actually does not exist any more on his side
and this makes sense.
Even this is not the case, to be 100% sure we have even completely disabled
our firewall on the tests but we have the same results.
Below I am sending you the provider trace that he sends 2 BYE to us
without any response from us. These two BYE never reached our side.
For testing we even changed the TCP listen port of kamailio to 5080 to be
separate ports from the UDP which remains on 5060
Provider engineers cannot respond to this problem with a resolution.
Can you please check if you can see something in the trace that can
identify the cause of this behavior?
Is it something I can change on our Kamailio2 config to avoid this?
TRACE
======
INVITE sip:123456789 at sip.mydomain.com:5060 SIP/2.0
Via: SIP/2.0/TCP 50.50.50.182:5080
;branch=z9hG4bK4e1.3a5eafdb0c6cb4f6b4fbaf7faface967.0
Max-Forwards: 68
From: 987654321 <sip:987654321 at sip.mydomain.com
>;tag=b695280bab3644b78ac5e09a5dba5ac4
To: <sip:123456789 at sip.mydomain.com>
Call-ID: d7ecb3b2408a466ea3074d1b48499bfa
CSeq: 11769 INVITE
Allow: PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, INFO, SUBSCRIBE, NOTIFY,
REFER, MESSAGE, OPTIONS
Supported: replaces, 100rel, timer, norefersub
Session-Expires: 1800
Min-SE: 90
Content-Type: application/sdp
Content-Length: 324
P-Asserted-Identity: <sip:987654321 at sip.mydomain.com>
Contact: <sip:btpsh-b6-614ae8ae-21085-1 at 50.50.50.182:5080;transport=tcp>
v=0
o=- 3841298833 3841298833 IN IP4 50.50.50.184
s=pjmedia
b=AS:84
t=0 0
a=X-nat:0
m=audio 27892 RTP/AVP 8 0 101
c=IN IP4 50.50.50.184
b=TIAS:64000
a=ssrc:83234588 cname:6b760b5029f225e8
a=rtpmap:8 PCMA/8000
a=rtpmap:0 PCMU/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=sendrecv
a=rtcp:27893
>--- SEND ----------->-------------> [Message: 2 of 12 ]
>------------>------------>
Date: 09-22-2021 Time: 08:27:16.00120
SIP/2.0 183 Session Progress
Via: SIP/2.0/TCP 50.50.50.182:5080
;branch=z9hG4bK4e1.3a5eafdb0c6cb4f6b4fbaf7faface967.0
From: 987654321 <sip:987654321 at sip.mydomain.com
>;tag=b695280bab3644b78ac5e09a5dba5ac4
To: <sip:123456789 at sip.mydomain.com>;tag=gK0df944e5
Call-ID: d7ecb3b2408a466ea3074d1b48499bfa
CSeq: 11769 INVITE
Contact: <sip:123456789 at 200.200.200.209:5060;transport=tcp>
Allow: INVITE,ACK,CANCEL,BYE,INFO,PRACK,UPDATE,OPTIONS
Require: 100rel
RSeq: 6618
Content-Length: 242
Content-Disposition: session; handling=required
Content-Type: application/sdp
v=0
o=Sonus_UAC 21561 25962 IN IP4 200.200.200.209
s=SIP Media Capabilities
c=IN IP4 200.200.200.211
t=0 0
m=audio 27992 RTP/AVP 8 101
a=rtpmap:8 PCMA/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=sendrecv
a=maxptime:20
<--- RECV -----------<-------------< [Message: 3 of 12 ]
<------------<------------<
Date: 09-22-2021 Time: 08:27:17.00047
PRACK sip:123456789 at 200.200.200.209:5060;transport=tcp SIP/2.0
Via: SIP/2.0/TCP 50.50.50.182:5080
;branch=z9hG4bKdd1.b4a7f8fbbf8027cc1b0a457f9e5963f7.0
Max-Forwards: 68
From: "MyUserName" <sip:987654321 at sip.mydomain.com
>;tag=b695280bab3644b78ac5e09a5dba5ac4
To: <sip:123456789 at sip.mydomain.com>;tag=gK0df944e5
Call-ID: d7ecb3b2408a466ea3074d1b48499bfa
CSeq: 11770 PRACK
RAck: 6618 11769 INVITE
Content-Length: 0
Contact: <sip:btpsh-b6-614ae8ae-21085-1 at 50.50.50.182:5080;transport=tcp>
>--- SEND ----------->-------------> [Message: 4 of 12 ]
>------------>------------>
Date: 09-22-2021 Time: 08:27:17.00050
SIP/2.0 200 OK
Via: SIP/2.0/TCP 50.50.50.182:5080
;branch=z9hG4bKdd1.b4a7f8fbbf8027cc1b0a457f9e5963f7.0
From: "MyUserName" <sip:987654321 at sip.mydomain.com
>;tag=b695280bab3644b78ac5e09a5dba5ac4
To: <sip:123456789 at sip.mydomain.com>;tag=gK0df944e5
Call-ID: d7ecb3b2408a466ea3074d1b48499bfa
CSeq: 11770 PRACK
Content-Length: 0
>--- SEND ----------->-------------> [Message: 5 of 12 ]
>------------>------------>
Date: 09-22-2021 Time: 08:27:17.00053
SIP/2.0 183 Session Progress
Via: SIP/2.0/TCP 50.50.50.182:5080
;branch=z9hG4bK4e1.3a5eafdb0c6cb4f6b4fbaf7faface967.0
From: 987654321 <sip:987654321 at sip.mydomain.com
>;tag=b695280bab3644b78ac5e09a5dba5ac4
To: <sip:123456789 at sip.mydomain.com>;tag=gK0df944e5
Call-ID: d7ecb3b2408a466ea3074d1b48499bfa
CSeq: 11769 INVITE
Require: 100rel
RSeq: 6619
Contact: <sip:123456789 at 200.200.200.209:5060;transport=tcp>
Allow: INVITE,ACK,CANCEL,BYE,INFO,PRACK,UPDATE,OPTIONS
Content-Length: 242
Content-Disposition: session; handling=required
Content-Type: application/sdp
v=0
o=Sonus_UAC 21561 25962 IN IP4 200.200.200.209
s=SIP Media Capabilities
c=IN IP4 200.200.200.211
t=0 0
m=audio 27992 RTP/AVP 8 101
a=rtpmap:8 PCMA/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=sendrecv
a=maxptime:20
<--- RECV -----------<-------------< [Message: 6 of 12 ]
<------------<------------<
Date: 09-22-2021 Time: 08:27:17.00059
PRACK sip:123456789 at 200.200.200.209:5060;transport=tcp SIP/2.0
Via: SIP/2.0/TCP 50.50.50.182:5080
;branch=z9hG4bKed1.fd8ecce909458a05324665afccdde954.0
Max-Forwards: 68
From: "MyUserName" <sip:987654321 at sip.mydomain.com
>;tag=b695280bab3644b78ac5e09a5dba5ac4
To: <sip:123456789 at sip.mydomain.com>;tag=gK0df944e5
Call-ID: d7ecb3b2408a466ea3074d1b48499bfa
CSeq: 11771 PRACK
RAck: 6619 11769 INVITE
Content-Length: 0
Contact: <sip:btpsh-b6-614ae8ae-21085-1 at 50.50.50.182:5080;transport=tcp>
>--- SEND ----------->-------------> [Message: 7 of 12 ]
>------------>------------>
Date: 09-22-2021 Time: 08:27:17.00062
SIP/2.0 200 OK
Via: SIP/2.0/TCP 50.50.50.182:5080
;branch=z9hG4bKed1.fd8ecce909458a05324665afccdde954.0
From: "MyUserName" <sip:987654321 at sip.mydomain.com
>;tag=b695280bab3644b78ac5e09a5dba5ac4
To: <sip:123456789 at sip.mydomain.com>;tag=gK0df944e5
Call-ID: d7ecb3b2408a466ea3074d1b48499bfa
CSeq: 11771 PRACK
Content-Length: 0
>--- SEND ----------->-------------> [Message: 8 of 12 ]
>------------>------------>
Date: 09-22-2021 Time: 08:27:20.00083
SIP/2.0 200 OK
Via: SIP/2.0/TCP 50.50.50.182:5080
;branch=z9hG4bK4e1.3a5eafdb0c6cb4f6b4fbaf7faface967.0
From: 987654321 <sip:987654321 at sip.mydomain.com
>;tag=b695280bab3644b78ac5e09a5dba5ac4
To: <sip:123456789 at sip.mydomain.com>;tag=gK0df944e5
Call-ID: d7ecb3b2408a466ea3074d1b48499bfa
CSeq: 11769 INVITE
Accept: application/sdp, application/isup, application/dtmf,
application/dtmf-relay, multipart/mixed
Contact: <sip:123456789 at 200.200.200.209:5060;transport=tcp>
Allow: INVITE,ACK,CANCEL,BYE,INFO,PRACK,UPDATE,OPTIONS
P-Asserted-Identity: <sip:6932489919 at MOBILE.PROVIDER.COM;user=phone>
Require: timer
Supported: timer
Session-Expires: 1800;refresher=uas
Content-Length: 242
Content-Disposition: session; handling=required
Content-Type: application/sdp
v=0
o=Sonus_UAC 21561 25962 IN IP4 200.200.200.209
s=SIP Media Capabilities
c=IN IP4 200.200.200.211
t=0 0
m=audio 27992 RTP/AVP 8 101
a=rtpmap:8 PCMA/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=sendrecv
a=maxptime:20
<--- RECV -----------<-------------< [Message: 9 of 12 ]
<------------<------------<
Date: 09-22-2021 Time: 08:27:20.00102
ACK sip:123456789 at 200.200.200.209:5060;transport=tcp SIP/2.0
Via: SIP/2.0/TCP 50.50.50.182:5080
;branch=z9hG4bK4e1.d06307f54416ad3db79569f704d8658e.0
Max-Forwards: 68
From: "MyUserName" <sip:987654321 at sip.mydomain.com
>;tag=b695280bab3644b78ac5e09a5dba5ac4
To: <sip:123456789 at sip.mydomain.com>;tag=gK0df944e5
Call-ID: d7ecb3b2408a466ea3074d1b48499bfa
CSeq: 11769 ACK
Content-Length: 0
Contact: <sip:btpsh-b6-614ae8ae-21085-1 at 50.50.50.182:5080;transport=tcp>
>--- SEND ----------->-------------> [Message: 10 of 12 ]
>------------>------------>
Date: 09-22-2021 Time: 08:27:26.00061
BYE sip:btpsh-b6-614ae8ae-21085-1 at 50.50.50.182:5080;transport=tcp SIP/2.0
Via: SIP/2.0/TCP 200.200.200.209:5060;branch=z9hG4bK0dB7cb270586eb0337b
From: <sip:123456789 at sip.mydomain.com>;tag=gK0df944e5
To: "987654321" <sip:987654321 at sip.mydomain.com
>;tag=b695280bab3644b78ac5e09a5dba5ac4
Call-ID: d7ecb3b2408a466ea3074d1b48499bfa
CSeq: 9423 BYE
Max-Forwards: 70
Supported: 100rel
Content-Length: 0
>--- SEND ----------->-------------> [Message: 11 of 12 ]
>------------>------------>
Date: 09-22-2021 Time: 08:27:32.00010
BYE sip:btpsh-b6-614ae8ae-21085-1 at 50.50.50.182:5080;transport=tcp SIP/2.0
Via: SIP/2.0/TCP 200.200.200.209:5060;branch=z9hG4bK0dB7cb270586eb0337b
From: <sip:123456789 at sip.mydomain.com>;tag=gK0df944e5
To: "987654321" <sip:987654321 at sip.mydomain.com
>;tag=b695280bab3644b78ac5e09a5dba5ac4
Call-ID: d7ecb3b2408a466ea3074d1b48499bfa
CSeq: 9423 BYE
Max-Forwards: 70
Supported: 100rel
Content-Length: 0
<--- RECV -----------<-------------< [Message: 12 of 12 ]
<------------<------------<
Date: 09-22-2021 Time: 08:27:33.00021
BYE sip:123456789 at 200.200.200.209:5060;transport=tcp SIP/2.0
Via: SIP/2.0/TCP 50.50.50.182:5080
;branch=z9hG4bKbd1.38c5755274f4163db0542d5ec9549053.0
Max-Forwards: 68
From: "MyUserName" <sip:987654321 at sip.mydomain.com
>;tag=b695280bab3644b78ac5e09a5dba5ac4
To: <sip:123456789 at sip.mydomain.com>;tag=gK0df944e5
Call-ID: d7ecb3b2408a466ea3074d1b48499bfa
CSeq: 11772 BYE
User-Agent: MicroSIP/3.20.5
Content-Length: 0
Contact: <sip:btpsh-b6-614ae8ae-21085-1 at 50.50.50.182:5080;transport=tcp>
Kind regards,
Angelo
Στις Τετ, 22 Σεπ 2021 στις 9:12 π.μ., ο/η Daniel-Constantin Mierla <
miconda at gmail.com> έγραψε:
> Hello,
> On 21.09.21 16:55, Angelo Sipper wrote:
>
> Hi Daniel,
>
> Thank you for your prompt response!
>
> 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.
> In case they cannot do this is there an alternative to bypass this?
>
> you have the flexibility to set the transport to $du or $ru and then
> relay. Or look at tm module, there are functions that can enforce a
> specific transport layer. Solutions can be made in config, but the best
> would be that the provider fixes it, otherwise you have to make a more
> complex config file to figure out if you have to enforce the transport
> manually or not, assuming you route calls to other endpoints that set the
> proper transport value.
>
> Cheers,
> Daniel
>
> As per now we have the save issue also on our ACK and BYE replies we send
> to the provider which is logical.
>
> Kind regards,
> Angelo
>
> Στις Τρί, 21 Σεπ 2021 στις 5:03 μ.μ., ο/η Daniel-Constantin Mierla <
> miconda at gmail.com> έγραψε:
>
>> Hello,
>>
>> 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.
>>
>> 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).
>>
>> Cheers,
>> Daniel
>> On 21.09.21 15:29, Angelo Sipper wrote:
>>
>> Correction
>> UAC (OverTLS) ->(TLS)Kamailio1(UDP)-> (UDP)Kamailio2(TCP)-> (TCP)Provider
>>
>> Στις Τρί, 21 Σεπ 2021 στις 4:28 μ.μ., ο/η Angelo Sipper <
>> sippro97 at gmail.com> έγραψε:
>>
>>> Hello,
>>>
>>> We have the following setup and I am having trouble passing the PRACK
>>> with correct protocol to the provider.
>>>
>>> UAC (OverTLS) ->(UDP)Kamailio1 (UDP)-> (UDP)Kamailio2 (TCP)->
>>> (TCP)Provider
>>>
>>> UAC : 10.2.1.160 NATED to 100.100.100.61 <http://50.50.50.50:5065/>
>>> (TLS)
>>> Kamailio1 Sockets: 50.50.50.210:5061 <http://170.170.170.210:5061/>
>>> (TLS),50.50.50.210:5060 <http://170.170.170.210:5060/> (UDP)
>>> Kamailio2 Sockets: 50.50.50.182:5060 <http://170.170.170.170:5060/> (UDP)
>>> 50.50.50.182:5080 <http://170.170.170.170:5060/> (TCP)
>>> Provider: 200.200.200.209:5060 <http://200.200.200.193:5060/> (TCP)
>>>
>>> We use dispatcher on Kamailio1 & Kamailio2
>>> The invite goes fine from UCA up to the provider and the provider
>>> responses arrive to UAC fine.
>>> 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.
>>> If the provider is on UDP everything works fine.
>>>
>>> Below I have the trace. What should I look for in the config to resolve
>>> this wrong protocol/socket on the PRACK?
>>>
>>> Kamailio2 Details:
>>>
>>> Sockets
>>> ======
>>> listen=udp:50.50.50.182:5060
>>> listen=tcp: 50.50.50.182:5080
>>>
>>> On the rr module I have
>>> ==================
>>> modparam("rr", "enable_double_rr", 1)
>>> modparam("rr", "append_fromtag", 1)
>>> modparam("rr", "enable_full_lr", 1)
>>>
>>> CONFIG REQINIT & WITHINDLG PARTS
>>> ================================
>>> route[REQINIT] {
>>>
>>> set_reply_no_connect();
>>> force_rport();
>>>
>>> if (!mf_process_maxfwd_header("10")) {
>>> xlog("L_ERROR","Too Many Hops Rejecting!");
>>> sl_send_reply("483","Too Many Hops");
>>> exit;
>>> }
>>>
>>> if(is_method("OPTIONS") && uri==myself && $rU==$null) {
>>> sl_send_reply("200","Keepalive");
>>> exit;
>>> }
>>>
>>> if(!sanity_check("1511", "7")) {
>>> xlog("Malformed SIP message from $si:$sp sanity 1511\n");
>>> exit;
>>> }
>>>
>>> if(!sanity_check("17895", "7")) {
>>> xlog("Malformed SIP request from $si:$sp sanity 17895\n");
>>> exit;
>>> }
>>> }
>>>
>>> route[WITHINDLG] {
>>> if (!has_totag()) return;
>>>
>>> if (loose_route()) {
>>>
>>> if (is_method("BYE")) {
>>> rtpengine_query();
>>> rtpengine_delete();
>>> }
>>> route(RELAY_OUT);
>>> }
>>>
>>> if ( is_method("ACK") ) {
>>> #if (t_lookup_request()) {
>>> if (t_check_trans()) {
>>> route(RELAY_OUT);
>>> exit;
>>> } else {
>>> # ACK without matching transaction ... ignore and discard
>>> exit;
>>> }
>>> }
>>>
>>> sl_send_reply("404","Not Allowed");
>>> exit;
>>> }
>>>
>>> TRACE
>>> ======
>>> 50.50.50.210:5060 50.50.50.182:5060
>>> 50.50.50.182:32818 200.200.200.209:5060
>>> qqqqqqqqqqwqqqqqqq qqqqqqqqqqwqqqqqqq
>>> qqqqqqqqqqwqqqqqqqq qqqqqqqqqqqwqqqqqqqqq
>>> a 15:31:11.787490 x INVITE (SDP) x
>>> x x
>>> a +0.003099 x qqqqqqqqqqqqqqqqqqqqqqqqqq> x
>>> x x
>>> a 15:31:11.790589 x 100 trying -- your call is x
>>> x x
>>> a +0.002220 x <qqqqqqqqqqqqqqqqqqqqqqqqqq x
>>> x x
>>> a 15:31:11.792809 x x
>>> x INVITE (SDP) x
>>> a +0.020725 x x
>>> x qqqqqqqqqqqqqqqqqqqqqqqqqq> x
>>> a 15:31:11.813534 x x
>>> x 100 Trying x
>>> a +2.628884 x x
>>> x <qqqqqqqqqqqqqqqqqqqqqqqqqq x
>>> a 15:31:14.442418 x x
>>> x 183 Session Progress (SDP) x
>>> a +0.001572 x x
>>> x <qqqqqqqqqqqqqqqqqqqqqqqqqq x
>>> a 15:31:14.443990 x 183 Session Progress (SDP) x
>>> x x
>>> a +0.299221 x <qqqqqqqqqqqqqqqqqqqqqqqqqq x
>>> x x
>>> a 15:31:14.743211 x PRACK x
>>> x x
>>> a +0.043114 x qqqqqqqqqqqqqqqqqqqqqqqqqq> x
>>> x x
>>> a 15:31:14.786325 x x
>>> PRACK x
>>> a +0.448104 x x
>>> qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq> x
>>> a 15:31:15.234429 x PRACK x
>>> x x
>>> a +0.045697 x qqqqqqqqqqqqqqqqqqqqqqqq>>> x
>>> x x
>>> a 15:31:15.280126 x x
>>> PRACK x
>>> a +0.954153 x x
>>> qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq>>> x
>>> a 15:31:16.234279 x PRACK x
>>> x x
>>> a +0.045832 x qqqqqqqqqqqqqqqqqqqqqqqq>>> x
>>> x x
>>> a 15:31:16.280111 x x
>>> PRACK x
>>> a +1.954170 x x
>>> qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq>>> x
>>> a 15:31:18.234281 x PRACK x
>>> x x
>>> a +0.045839 x qqqqqqqqqqqqqqqqqqqqqqqq>>> x
>>> x x
>>> a 15:31:18.280120 x x
>>> PRACK x
>>> a +1.829676 x x
>>> qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq>>> x
>>> a 15:31:20.109796 x x
>>> x 183 Session Progress (SDP) x
>>> a +0.001460 x x
>>> x <<<qqqqqqqqqqqqqqqqqqqqqqqq x
>>> a 15:31:20.111256 x 183 Session Progress (SDP) x
>>> x x
>>> a +2.123075 x <<<qqqqqqqqqqqqqqqqqqqqqqqq x
>>> x x
>>> a 15:31:22.234331 x PRACK x
>>> x x
>>> a +0.045825 x qqqqqqqqqqqqqqqqqqqqqqqq>>> x
>>> x x
>>> a 15:31:22.280156 x x
>>> PRACK x
>>> a +2.239640 x x
>>> qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq>>> x
>>> a 15:31:24.519796 x x
>>> x 486 Busy Here x
>>> a +0.000555 x x
>>> x <qqqqqqqqqqqqqqqqqqqqqqqqqq x
>>> a 15:31:24.520351 x x
>>> x ACK x
>>> a +0.008965 x x
>>> x qqqqqqqqqqqqqqqqqqqqqqqqqq> x
>>> a 15:31:24.529316 x 486 Busy Here x
>>> x x
>>> a +0.000835 x <qqqqqqqqqqqqqqqqqqqqqqqqqq x
>>> x x
>>> a 15:31:24.530151 x ACK x
>>> x x
>>> a +1.704184 x qqqqqqqqqqqqqqqqqqqqqqqqqq> x
>>> x x
>>> a 15:31:26.234335 x PRACK x
>>> x x
>>> a +0.045856 x qqqqqqqqqqqqqqqqqqqqqqqqqq> x
>>> x x
>>> a 15:31:26.280191 x x
>>> PRACK x
>>> a +3.954734 x x
>>> qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq>>> x
>>> a 15:31:30.234925 x PRACK x
>>> x x
>>> x +0.045279 x qqqqqqqqqqqqqqqqqqqqqqqq>>> x
>>> x x
>>> x 15:31:30.280204 x x
>>> PRACK x
>>> x +3.954116 x x
>>> qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq>>> x
>>> x 15:31:34.234320 x PRACK x
>>> x x
>>>
>>>
>>> 2021/09/21 15:31:11.787490 50.50.50.210:5060 -> 50.50.50.182:5060
>>> INVITE sip:123456789 at sip.mydomain.com:5060 SIP/2.0
>>> Record-Route:
>>> <sip:50.50.50.210;r2=on;lr;ftag=73622588a6084d8ba1bca54781e5094d;vsf=AAAAAFpUAgECBwAABnEBB3ZdWEIAQkVFS0BHX2ljZS5ldQ--;vst=AAAAAAAAAAAKCQ8ABAkHCAYKAgdxQFpGbkJCRktDREFYU1AAV0Qw;did=e8e.bb7;nat=yes>
>>> Record-Route:
>>> <sip:50.50.50.210:5061;transport=tls;r2=on;lr;ftag=73622588a6084d8ba1bca54781e5094d;vsf=AAAAAFpUAgECBwAABnEBB3ZdWEIAQkVFS0BHX2ljZS5ldQ--;vst=AAAAAAAAAAAKCQ8ABAkHCAYKAgdxQFpGbkJCRktDREFYU1AAV0Qw;did=e8e.bb7;nat=yes>
>>> Via: SIP/2.0/UDP
>>> 50.50.50.210;branch=z9hG4bK37fe.f05cee0feff15d488a12d3758cece7ae.0;i=baa3
>>> Via: SIP/2.0/TLS 10.2.1.160:58568
>>> ;received=100.100.100.61;rport=48572;branch=z9hG4bKPj472f07568b924214ada83ddfb0fb12b6;alias
>>> Max-Forwards: 69
>>> From: 987654321 <sip:987654321 at sip.mydomain.com
>>> >;tag=73622588a6084d8ba1bca54781e5094d
>>> To: <sip:123456789 at sip.mydomain.com>
>>> Contact: "MyUserNAme"
>>> <sip:mycustomerid at 10.2.1.160:58568;transport=TLS;ob;alias=100.100.100.61~48572~3>
>>> Call-ID: 846ffb2f076848c5b8edc876fa1c0d9b
>>> CSeq: 14320 INVITE
>>> Allow: PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, INFO, SUBSCRIBE, NOTIFY,
>>> REFER, MESSAGE, OPTIONS
>>> Supported: replaces, 100rel, timer, norefersub
>>> Session-Expires: 1800
>>> Min-SE: 90
>>> User-Agent: MicroSIP/3.20.5
>>> Content-Type: application/sdp
>>> Content-Length: 326
>>> P-Asserted-Identity: <sip:987654321 at sip.mydomain.com>
>>>
>>> v=0
>>> o=- 3841227071 3841227071 IN IP4 50.50.50.215
>>> s=pjmedia
>>> b=AS:84
>>> t=0 0
>>> a=X-nat:0
>>> m=audio 36448 RTP/AVP 8 0 101
>>> c=IN IP4 50.50.50.215
>>> b=TIAS:64000
>>> a=ssrc:2024148033 cname:4f2468fd611910fa
>>> a=rtpmap:8 PCMA/8000
>>> a=rtpmap:0 PCMU/8000
>>> a=rtpmap:101 telephone-event/8000
>>> a=fmtp:101 0-16
>>> a=sendrecv
>>> a=rtcp:36449
>>>
>>>
>>> 2021/09/21 15:31:11.790589 50.50.50.182:5060 -> 50.50.50.210:5060
>>> SIP/2.0 100 trying -- your call is important to us
>>> Via: SIP/2.0/UDP
>>> 50.50.50.210;branch=z9hG4bK37fe.f05cee0feff15d488a12d3758cece7ae.0;i=baa3;rport=5060
>>> Via: SIP/2.0/TLS 10.2.1.160:58568
>>> ;received=100.100.100.61;rport=48572;branch=z9hG4bKPj472f07568b924214ada83ddfb0fb12b6;alias
>>> From: 987654321 <sip:987654321 at sip.mydomain.com
>>> >;tag=73622588a6084d8ba1bca54781e5094d
>>> To: <sip:123456789 at sip.mydomain.com>
>>> Call-ID: 846ffb2f076848c5b8edc876fa1c0d9b
>>> CSeq: 14320 INVITE
>>> Server: myserver
>>> Content-Length: 0
>>>
>>>
>>> 2021/09/21 15:31:11.792809 50.50.50.182:32818 -> 200.200.200.209:5060
>>> INVITE sip:123456789 at sip.mydomain.com:5060 SIP/2.0
>>> Record-Route:
>>> <sip:50.50.50.182:5080;transport=tcp;r2=on;lr=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1>
>>> Record-Route:
>>> <sip:50.50.50.182;r2=on;lr=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1>
>>> Record-Route:
>>> <sip:50.50.50.210;r2=on;lr;ftag=73622588a6084d8ba1bca54781e5094d;vsf=AAAAAFpUAgECBwAABnEBB3ZdWEIAQkVFS0BHX2ljZS5ldQ--;vst=AAAAAAAAAAAKCQ8ABAkHCAYKAgdxQFpGbkJCRktDREFYU1AAV0Qw;did=e8e.bb7;nat=yes>
>>> Record-Route:
>>> <sip:50.50.50.210:5061;transport=tls;r2=on;lr;ftag=73622588a6084d8ba1bca54781e5094d;vsf=AAAAAFpUAgECBwAABnEBB3ZdWEIAQkVFS0BHX2ljZS5ldQ--;vst=AAAAAAAAAAAKCQ8ABAkHCAYKAgdxQFpGbkJCRktDREFYU1AAV0Qw;did=e8e.bb7;nat=yes>
>>> Via: SIP/2.0/TCP 50.50.50.182:5080
>>> ;branch=z9hG4bK37fe.254ecab744d678154779037580c59731.0
>>> Via: SIP/2.0/UDP
>>> 50.50.50.210;rport=5060;branch=z9hG4bK37fe.f05cee0feff15d488a12d3758cece7ae.0;i=baa3
>>> Via: SIP/2.0/TLS 10.2.1.160:58568
>>> ;received=100.100.100.61;rport=48572;branch=z9hG4bKPj472f07568b924214ada83ddfb0fb12b6;alias
>>> Max-Forwards: 68
>>> From: 987654321 <sip:987654321 at sip.mydomain.com
>>> >;tag=73622588a6084d8ba1bca54781e5094d
>>> To: <sip:123456789 at sip.mydomain.com>
>>> Contact: "MyUserNAme"
>>> <sip:mycustomerid at 10.2.1.160:58568;transport=TLS;ob;alias=100.100.100.61~48572~3>
>>> Call-ID: 846ffb2f076848c5b8edc876fa1c0d9b
>>> CSeq: 14320 INVITE
>>> Allow: PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, INFO, SUBSCRIBE, NOTIFY,
>>> REFER, MESSAGE, OPTIONS
>>> Supported: replaces, 100rel, timer, norefersub
>>> Session-Expires: 1800
>>> Min-SE: 90
>>> Content-Type: application/sdp
>>> Content-Length: 326
>>> P-Asserted-Identity: <sip:987654321 at sip.mydomain.com>
>>>
>>> v=0
>>> o=- 3841227071 3841227071 IN IP4 50.50.50.183
>>> s=pjmedia
>>> b=AS:84
>>> t=0 0
>>> a=X-nat:0
>>> m=audio 29308 RTP/AVP 8 0 101
>>> c=IN IP4 50.50.50.183
>>> b=TIAS:64000
>>> a=ssrc:2024148033 cname:4f2468fd611910fa
>>> a=rtpmap:8 PCMA/8000
>>> a=rtpmap:0 PCMU/8000
>>> a=rtpmap:101 telephone-event/8000
>>> a=fmtp:101 0-16
>>> a=sendrecv
>>> a=rtcp:29309
>>>
>>>
>>> 2021/09/21 15:31:11.813534 200.200.200.209:5060 -> 50.50.50.182:32818
>>> SIP/2.0 100 Trying
>>> Via: SIP/2.0/TCP 50.50.50.182:5080
>>> ;branch=z9hG4bK37fe.254ecab744d678154779037580c59731.0
>>> Via: SIP/2.0/UDP
>>> 50.50.50.210;rport=5060;branch=z9hG4bK37fe.f05cee0feff15d488a12d3758cece7ae.0;i=baa3
>>> Via: SIP/2.0/TLS 10.2.1.160:58568
>>> ;received=100.100.100.61;rport=48572;branch=z9hG4bKPj472f07568b924214ada83ddfb0fb12b6;alias
>>> From: 987654321 <sip:987654321 at sip.mydomain.com
>>> >;tag=73622588a6084d8ba1bca54781e5094d
>>> To: <sip:123456789 at sip.mydomain.com>;tag=gK0d8c9073
>>> Call-ID: 846ffb2f076848c5b8edc876fa1c0d9b
>>> CSeq: 14320 INVITE
>>> Content-Length: 0
>>>
>>>
>>> 2021/09/21 15:31:14.442418 200.200.200.209:5060 -> 50.50.50.182:32818
>>> SIP/2.0 183 Session Progress
>>> Via: SIP/2.0/TCP 50.50.50.182:5080
>>> ;branch=z9hG4bK37fe.254ecab744d678154779037580c59731.0
>>> Via: SIP/2.0/UDP
>>> 50.50.50.210;rport=5060;branch=z9hG4bK37fe.f05cee0feff15d488a12d3758cece7ae.0;i=baa3
>>> Via: SIP/2.0/TLS 10.2.1.160:58568
>>> ;received=100.100.100.61;rport=48572;branch=z9hG4bKPj472f07568b924214ada83ddfb0fb12b6;alias
>>> From: 987654321 <sip:987654321 at sip.mydomain.com
>>> >;tag=73622588a6084d8ba1bca54781e5094d
>>> To: <sip:123456789 at sip.mydomain.com>;tag=gK0d8c9073
>>> Call-ID: 846ffb2f076848c5b8edc876fa1c0d9b
>>> CSeq: 14320 INVITE
>>> Record-Route:
>>> <sip:50.50.50.182:5080;transport=tcp;r2=on;lr=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1>
>>> Record-Route:
>>> <sip:50.50.50.182:5060;r2=on;lr=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1>
>>> Record-Route:
>>> <sip:50.50.50.210:5060;r2=on;lr;ftag=73622588a6084d8ba1bca54781e5094d;vsf=AAAAAFpUAgECBwAABnEBB3ZdWEIAQkVFS0BHX2ljZS5ldQ--;vst=AAAAAAAAAAAKCQ8ABAkHCAYKAgdxQFpGbkJCRktDREFYU1AAV0Qw;did=e8e.bb7;nat=yes>
>>> Record-Route:
>>> <sip:50.50.50.210:5061;transport=tls;r2=on;lr;ftag=73622588a6084d8ba1bca54781e5094d;vsf=AAAAAFpUAgECBwAABnEBB3ZdWEIAQkVFS0BHX2ljZS5ldQ--;vst=AAAAAAAAAAAKCQ8ABAkHCAYKAgdxQFpGbkJCRktDREFYU1AAV0Qw;did=e8e.bb7;nat=yes>
>>> Contact: <sip:123456789 at 200.200.200.209:5060>
>>> Allow: INVITE,ACK,CANCEL,BYE,INFO,PRACK,UPDATE,OPTIONS
>>> Require: 100rel
>>> RSeq: 1509
>>> Content-Length: 241
>>> Content-Disposition: session; handling=required
>>> Content-Type: application/sdp
>>>
>>> v=0
>>> o=Sonus_UAC 12038 7929 IN IP4 200.200.200.209
>>> s=SIP Media Capabilities
>>> c=IN IP4 200.200.200.212
>>> t=0 0
>>> m=audio 17366 RTP/AVP 8 101
>>> a=rtpmap:8 PCMA/8000
>>> a=rtpmap:101 telephone-event/8000
>>> a=fmtp:101 0-15
>>> a=sendrecv
>>> a=maxptime:20
>>>
>>>
>>> 2021/09/21 15:31:14.443990 50.50.50.182:5060 -> 50.50.50.210:5060
>>> SIP/2.0 183 Session Progress
>>> Via: SIP/2.0/UDP
>>> 50.50.50.210;rport=5060;branch=z9hG4bK37fe.f05cee0feff15d488a12d3758cece7ae.0;i=baa3
>>> Via: SIP/2.0/TLS 10.2.1.160:58568
>>> ;received=100.100.100.61;rport=48572;branch=z9hG4bKPj472f07568b924214ada83ddfb0fb12b6;alias
>>> From: 987654321 <sip:987654321 at sip.mydomain.com
>>> >;tag=73622588a6084d8ba1bca54781e5094d
>>> To: <sip:123456789 at sip.mydomain.com>;tag=gK0d8c9073
>>> Call-ID: 846ffb2f076848c5b8edc876fa1c0d9b
>>> CSeq: 14320 INVITE
>>> Record-Route:
>>> <sip:50.50.50.182:5080;transport=tcp;r2=on;lr=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1>
>>> Record-Route:
>>> <sip:50.50.50.182:5060;r2=on;lr=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1>
>>> Record-Route:
>>> <sip:50.50.50.210:5060;r2=on;lr;ftag=73622588a6084d8ba1bca54781e5094d;vsf=AAAAAFpUAgECBwAABnEBB3ZdWEIAQkVFS0BHX2ljZS5ldQ--;vst=AAAAAAAAAAAKCQ8ABAkHCAYKAgdxQFpGbkJCRktDREFYU1AAV0Qw;did=e8e.bb7;nat=yes>
>>> Record-Route:
>>> <sip:50.50.50.210:5061;transport=tls;r2=on;lr;ftag=73622588a6084d8ba1bca54781e5094d;vsf=AAAAAFpUAgECBwAABnEBB3ZdWEIAQkVFS0BHX2ljZS5ldQ--;vst=AAAAAAAAAAAKCQ8ABAkHCAYKAgdxQFpGbkJCRktDREFYU1AAV0Qw;did=e8e.bb7;nat=yes>
>>> Contact: <sip:123456789 at 200.200.200.209:5060>
>>> Allow: INVITE,ACK,CANCEL,BYE,INFO,PRACK,UPDATE,OPTIONS
>>> Require: 100rel
>>> RSeq: 1509
>>> Content-Length: 253
>>> Content-Disposition: session; handling=required
>>> Content-Type: application/sdp
>>>
>>> v=0
>>> o=Sonus_UAC 12038 7929 IN IP4 50.50.50.183
>>> s=SIP Media Capabilities
>>> c=IN IP4 50.50.50.183
>>> t=0 0
>>> m=audio 29320 RTP/AVP 8 101
>>> a=maxptime:20
>>> a=rtpmap:8 PCMA/8000
>>> a=rtpmap:101 telephone-event/8000
>>> a=fmtp:101 0-15
>>> a=sendrecv
>>> a=rtcp:29321
>>>
>>>
>>> 2021/09/21 15:31:14.743211 50.50.50.210:5060 -> 50.50.50.182:5060
>>> PRACK sip:123456789 at 200.200.200.209:5060 SIP/2.0
>>> Via: SIP/2.0/UDP
>>> 50.50.50.210;branch=z9hG4bK47fe.067d9577e9ab3e30e01745a2cf73b7a4.0;i=baa3
>>> Via: SIP/2.0/TLS 10.2.1.160:58568
>>> ;received=100.100.100.61;rport=48572;branch=z9hG4bKPj9ab94c339144428bb7ada63b133f2c12;alias
>>> Max-Forwards: 69
>>> From: "MyUserNAme" <sip:987654321 at sip.mydomain.com
>>> >;tag=73622588a6084d8ba1bca54781e5094d
>>> To: <sip:123456789 at sip.mydomain.com>;tag=gK0d8c9073
>>> Call-ID: 846ffb2f076848c5b8edc876fa1c0d9b
>>> CSeq: 14321 PRACK
>>> Route:
>>> <sip:50.50.50.182:5060;lr;r2=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1>
>>> Route:
>>> <sip:50.50.50.182:5080;transport=tcp;lr;r2=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1>
>>> RAck: 1509 14320 INVITE
>>> Content-Length: 0
>>>
>>>
>>> 2021/09/21 15:31:14.786325 50.50.50.182:5060 -> 200.200.200.209:5060
>>> PRACK sip:123456789transport=tcp at 200.200.200.209:5060 SIP/2.0
>>> Via: SIP/2.0/UDP
>>> 50.50.50.182;branch=z9hG4bK47fe.3406fe45bb75c3e955b6aa67e53aff58.0
>>> Via: SIP/2.0/UDP
>>> 50.50.50.210;rport=5060;branch=z9hG4bK47fe.067d9577e9ab3e30e01745a2cf73b7a4.0;i=baa3
>>> Via: SIP/2.0/TLS 10.2.1.160:58568
>>> ;received=100.100.100.61;rport=48572;branch=z9hG4bKPj9ab94c339144428bb7ada63b133f2c12;alias
>>> Max-Forwards: 68
>>> From: "MyUserNAme" <sip:987654321 at sip.mydomain.com
>>> >;tag=73622588a6084d8ba1bca54781e5094d
>>> To: <sip:123456789 at sip.mydomain.com>;tag=gK0d8c9073
>>> Call-ID: 846ffb2f076848c5b8edc876fa1c0d9b
>>> CSeq: 14321 PRACK
>>> RAck: 1509 14320 INVITE
>>> Content-Length: 0
>>>
>>>
>>> 2021/09/21 15:31:15.234429 50.50.50.210:5060 -> 50.50.50.182:5060
>>> PRACK sip:123456789 at 200.200.200.209:5060 SIP/2.0
>>> Via: SIP/2.0/UDP
>>> 50.50.50.210;branch=z9hG4bK47fe.067d9577e9ab3e30e01745a2cf73b7a4.0;i=baa3
>>> Via: SIP/2.0/TLS 10.2.1.160:58568
>>> ;received=100.100.100.61;rport=48572;branch=z9hG4bKPj9ab94c339144428bb7ada63b133f2c12;alias
>>> Max-Forwards: 69
>>> From: "MyUserNAme" <sip:987654321 at sip.mydomain.com
>>> >;tag=73622588a6084d8ba1bca54781e5094d
>>> To: <sip:123456789 at sip.mydomain.com>;tag=gK0d8c9073
>>> Call-ID: 846ffb2f076848c5b8edc876fa1c0d9b
>>> CSeq: 14321 PRACK
>>> Route:
>>> <sip:50.50.50.182:5060;lr;r2=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1>
>>> Route:
>>> <sip:50.50.50.182:5080;transport=tcp;lr;r2=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1>
>>> RAck: 1509 14320 INVITE
>>> Content-Length: 0
>>>
>>>
>>> 2021/09/21 15:31:15.280126 50.50.50.182:5060 -> 200.200.200.209:5060
>>> PRACK sip:123456789transport=tcp at 200.200.200.209:5060 SIP/2.0
>>> Via: SIP/2.0/UDP
>>> 50.50.50.182;branch=z9hG4bK47fe.3406fe45bb75c3e955b6aa67e53aff58.0
>>> Via: SIP/2.0/UDP
>>> 50.50.50.210;rport=5060;branch=z9hG4bK47fe.067d9577e9ab3e30e01745a2cf73b7a4.0;i=baa3
>>> Via: SIP/2.0/TLS 10.2.1.160:58568
>>> ;received=100.100.100.61;rport=48572;branch=z9hG4bKPj9ab94c339144428bb7ada63b133f2c12;alias
>>> Max-Forwards: 68
>>> From: "MyUserNAme" <sip:987654321 at sip.mydomain.com
>>> >;tag=73622588a6084d8ba1bca54781e5094d
>>> To: <sip:123456789 at sip.mydomain.com>;tag=gK0d8c9073
>>> Call-ID: 846ffb2f076848c5b8edc876fa1c0d9b
>>> CSeq: 14321 PRACK
>>> RAck: 1509 14320 INVITE
>>> Content-Length: 0
>>>
>>>
>>> 2021/09/21 15:31:16.234279 50.50.50.210:5060 -> 50.50.50.182:5060
>>> PRACK sip:123456789 at 200.200.200.209:5060 SIP/2.0
>>> Via: SIP/2.0/UDP
>>> 50.50.50.210;branch=z9hG4bK47fe.067d9577e9ab3e30e01745a2cf73b7a4.0;i=baa3
>>> Via: SIP/2.0/TLS 10.2.1.160:58568
>>> ;received=100.100.100.61;rport=48572;branch=z9hG4bKPj9ab94c339144428bb7ada63b133f2c12;alias
>>> Max-Forwards: 69
>>> From: "MyUserNAme" <sip:987654321 at sip.mydomain.com
>>> >;tag=73622588a6084d8ba1bca54781e5094d
>>> To: <sip:123456789 at sip.mydomain.com>;tag=gK0d8c9073
>>> Call-ID: 846ffb2f076848c5b8edc876fa1c0d9b
>>> CSeq: 14321 PRACK
>>> Route:
>>> <sip:50.50.50.182:5060;lr;r2=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1>
>>> Route:
>>> <sip:50.50.50.182:5080;transport=tcp;lr;r2=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1>
>>> RAck: 1509 14320 INVITE
>>> Content-Length: 0
>>>
>>>
>>> 2021/09/21 15:31:16.280111 50.50.50.182:5060 -> 200.200.200.209:5060
>>> PRACK sip:123456789transport=tcp at 200.200.200.209:5060 SIP/2.0
>>> Via: SIP/2.0/UDP
>>> 50.50.50.182;branch=z9hG4bK47fe.3406fe45bb75c3e955b6aa67e53aff58.0
>>> Via: SIP/2.0/UDP
>>> 50.50.50.210;rport=5060;branch=z9hG4bK47fe.067d9577e9ab3e30e01745a2cf73b7a4.0;i=baa3
>>> Via: SIP/2.0/TLS 10.2.1.160:58568
>>> ;received=100.100.100.61;rport=48572;branch=z9hG4bKPj9ab94c339144428bb7ada63b133f2c12;alias
>>> Max-Forwards: 68
>>> From: "MyUserNAme" <sip:987654321 at sip.mydomain.com
>>> >;tag=73622588a6084d8ba1bca54781e5094d
>>> To: <sip:123456789 at sip.mydomain.com>;tag=gK0d8c9073
>>> Call-ID: 846ffb2f076848c5b8edc876fa1c0d9b
>>> CSeq: 14321 PRACK
>>> RAck: 1509 14320 INVITE
>>> Content-Length: 0
>>>
>>>
>>> 2021/09/21 15:31:18.234281 50.50.50.210:5060 -> 50.50.50.182:5060
>>> PRACK sip:123456789 at 200.200.200.209:5060 SIP/2.0
>>> Via: SIP/2.0/UDP
>>> 50.50.50.210;branch=z9hG4bK47fe.067d9577e9ab3e30e01745a2cf73b7a4.0;i=baa3
>>> Via: SIP/2.0/TLS 10.2.1.160:58568
>>> ;received=100.100.100.61;rport=48572;branch=z9hG4bKPj9ab94c339144428bb7ada63b133f2c12;alias
>>> Max-Forwards: 69
>>> From: "MyUserNAme" <sip:987654321 at sip.mydomain.com
>>> >;tag=73622588a6084d8ba1bca54781e5094d
>>> To: <sip:123456789 at sip.mydomain.com>;tag=gK0d8c9073
>>> Call-ID: 846ffb2f076848c5b8edc876fa1c0d9b
>>> CSeq: 14321 PRACK
>>> Route:
>>> <sip:50.50.50.182:5060;lr;r2=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1>
>>> Route:
>>> <sip:50.50.50.182:5080;transport=tcp;lr;r2=on;ftag=73622588a6084d8ba1bca54781e5094d;did=e8e.c4d1>
>>> RAck: 1509 14320 INVITE
>>> Content-Length: 0
>>>
>>> Any help will be much appreciated.
>>>
>>> Kind regards,
>>> Angelo
>>>
>>
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>> --
> Daniel-Constantin Mierla -- www.asipto.comwww.twitter.com/miconda -- www.linkedin.com/in/miconda
> Kamailio Advanced Training - Online
> Nov 08-11, 2021 (Europe Timezone) - Nov 22-25, 2021 (America Timezone)
> * https://www.asipto.com/sw/kamailio-advanced-training-online/
>
>
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