[SR-Users] Re: ACK on Reverse Invite is send to NATed Internal port instead of public port

26 Jan 2023

correction
My setup has: (TLS)UAC -> (TLS)Kamailio1(UDP) -> (UDP)Kamailio2(UDP) ->
Carrier(UDP)

Στις Πέμ 26 Ιαν 2023 στις 12:11 μ.μ., ο/η Angelo Sipper &lt;sippro97(a)gmail.com&gt;
έγραψε:

...
  Hi,
 I am having an issue on some outbound calls from nated UAC. On these calls
 our SBC receive reverse invites from the carrier side within the call. When
 this happens, my SBC(Kamailio1) sends the invite to UAC and the UAC sends
 200 OK (SDP). Unfortunately my SBC(Kamailio1) sends back the ACK not to the
 correct UAC public port but instead to UAC internal port making the call to
 crash!
 My setup has: (TLS)UAC -> (UDP)Kamailio1(UDP) -> (UDP)Kamailio2(TLS) ->
 Carrier(UDP)

 Bellow you can find the trace and you can see the ACK send to wrong port
 on 2023/01/26 09:48:31.254591

 Your help will be much appreciated!

 2023/01/26 09:48:23.225326 77.1.1.1:2314 -> 17.17.17.211:5060
 INVITE sip:300987654321@17.17.17.211:5060 SIP/2.0
 Via: SIP/2.0/UDP 192.168.80.228:5060
 ;branch=z9hG4bK-524287-1---9bbfa2727a1f3803;rport
 Max-Forwards: 70
 Contact: <sip:301234567890@77.1.1.1:20125>
 To: <sip:300987654321@17.17.17.211:5060>
 From: "My, User"<sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 1 INVITE
 Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY,
 REFER, INFO, MESSAGE, UPDATE
 Content-Type: application/sdp
 Supported: replaces, timer
 User-Agent: 3CXPhoneSystem 18.0.6.905 (905)
 Remote-Party-ID: <sip:301234567890>;party=called
 Content-Length: 283

 v=0
 o=3cxPS 792019937001472 2393157908037633 IN IP4 77.1.1.1
 s=3cxPS Audio call
 c=IN IP4 77.1.1.1
 t=0 0
 m=audio 9054 RTP/AVP 8 0 18 101
 a=rtpmap:8 PCMA/8000
 a=rtpmap:0 PCMU/8000
 a=rtpmap:18 G729/8000
 a=fmtp:18 annexb=no
 a=rtpmap:101 telephone-event/8000
 a=sendrecv

 2023/01/26 09:48:23.240310 17.17.17.211:5060 -> 77.1.1.1:2314
 SIP/2.0 100 trying -- your call is important to us
 Via: SIP/2.0/UDP 192.168.80.228:5060
 ;branch=z9hG4bK-524287-1---9bbfa2727a1f3803;rport=2314;received=77.1.1.1
 To: <sip:300987654321@17.17.17.211:5060>
 From: "My, User"<sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 1 INVITE
 Server: Supervoice
 Content-Length: 0

 2023/01/26 09:48:23.301454 17.17.17.211:5060 -> 17.17.17.181:5060
 INVITE sip:300987654321@sip.mydomain.com:5060 SIP/2.0
 Record-Route:

<sip:17.17.17.211;lr;ftag=07ece97c;vsf=AAAAAFpUAgECBwAACnAGAW5FUF4ZXUdDUUhEX1hRUC5ldQ--;vst=AAAAAAAAAAAAAAAAAAAAAABCXkYAQkdeVEJDQVtSVBRQRTYw;did=5fc.669;nat=yes>
 Via: SIP/2.0/UDP
 17.17.17.211;branch=z9hG4bKc2d8.34fe87ef37b154d931766bddfd3da41d.0
 Via: SIP/2.0/UDP 192.168.80.228:5060
 ;received=77.1.1.1;branch=z9hG4bK-524287-1---9bbfa2727a1f3803;rport=2314
 Max-Forwards: 69
 Contact: <sip:301234567890@77.1.1.1:20125;alias=77.1.1.1~2314~1>
 To: <sip:300987654321@sip.mydomain.com>
 From: 301234567890<sip:301234567890@sip.mydomain.com>;tag=07ece97c
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 1 INVITE
 Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY,
 REFER, INFO, MESSAGE, UPDATE
 Content-Type: application/sdp
 Supported: replaces, timer
 User-Agent: 3CXPhoneSystem 18.0.6.905 (905)
 Content-Length: 300
 P-Asserted-Identity: <sip:301234567890@sip.mydomain.com>

 v=0
 o=3cxPS 792019937001472 2393157908037633 IN IP4 14.1.1.28
 s=3cxPS Audio call
 c=IN IP4 14.1.1.28
 t=0 0
 m=audio 13278 RTP/AVP 8 0 18 101
 a=rtpmap:8 PCMA/8000
 a=rtpmap:0 PCMU/8000
 a=rtpmap:18 G729/8000
 a=rtpmap:101 telephone-event/8000
 a=fmtp:18 annexb=no
 a=sendrecv
 a=rtcp:13279

 2023/01/26 09:48:23.302899 17.17.17.181:5060 -> 17.17.17.211:5060
 SIP/2.0 100 trying -- your call is important to us
 Via: SIP/2.0/UDP
 17.17.17.211;branch=z9hG4bKc2d8.34fe87ef37b154d931766bddfd3da41d.0;rport=5060
 Via: SIP/2.0/UDP 192.168.80.228:5060
 ;received=77.1.1.1;branch=z9hG4bK-524287-1---9bbfa2727a1f3803;rport=2314
 To: <sip:300987654321@sip.mydomain.com>
 From: 301234567890<sip:301234567890@sip.mydomain.com>;tag=07ece97c
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 1 INVITE
 Server: Supervoice
 Content-Length: 0

 2023/01/26 09:48:24.077941 17.17.17.181:5060 -> 17.17.17.211:5060
 SIP/2.0 183 Session Progress
 From: 301234567890<sip:301234567890@sip.mydomain.com>;tag=07ece97c
 To: <sip:300987654321@sip.mydomain.com>;tag=gK0e80b4b9
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 1 INVITE
 Allow: INVITE,ACK,CANCEL,BYE,INFO,PRACK,UPDATE,OPTIONS
 Server: Voiceland SBC
 Content-Length:  250
 Content-Disposition: session; handling=required
 Content-Type: application/sdp
 Via: SIP/2.0/UDP

17.17.17.211;rport=5060;branch=z9hG4bKc2d8.34fe87ef37b154d931766bddfd3da41d.0,SIP/2.0/UDP
 192.168.80.228:5060
 ;received=77.1.1.1;branch=z9hG4bK-524287-1---9bbfa2727a1f3803;rport=2314
 Contact: <sip:atpsh-b5-62dfd3a3-cd5ed-1d354@17.17.17.181>
 Record-Route:

<sip:17.17.17.211;lr;ftag=07ece97c;vsf=AAAAAFpUAgECBwAACnAGAW5FUF4ZXUdDUUhEX1hRUC5ldQ--;vst=AAAAAAAAAAAAAAAAAAAAAABCXkYAQkdeVEJDQVtSVBRQRTYw;did=5fc.669;nat=yes>

 v=0
 o=Sonus_UAC 14218 13518 IN IP4 14.1.1.30
 s=SIP Media Capabilities
 c=IN IP4 14.1.1.30
 t=0 0
 m=audio 18600 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:18601

 2023/01/26 09:48:24.138348 17.17.17.181:5060 -> 17.17.17.211:5060
 SIP/2.0 183 Session Progress
 From: 301234567890<sip:301234567890@sip.mydomain.com>;tag=07ece97c
 To: <sip:300987654321@sip.mydomain.com>;tag=gK0e80b4b9
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 1 INVITE
 Allow: INVITE,ACK,CANCEL,BYE,INFO,PRACK,UPDATE,OPTIONS
 Server: Voiceland SBC
 Content-Length:  250
 Content-Disposition: session; handling=required
 Content-Type: application/sdp
 Via: SIP/2.0/UDP

17.17.17.211;rport=5060;branch=z9hG4bKc2d8.34fe87ef37b154d931766bddfd3da41d.0,SIP/2.0/UDP
 192.168.80.228:5060
 ;received=77.1.1.1;branch=z9hG4bK-524287-1---9bbfa2727a1f3803;rport=2314
 Contact: <sip:atpsh-b5-62dfd3a3-cd5ed-1d354@17.17.17.181>
 Record-Route:

<sip:17.17.17.211;lr;ftag=07ece97c;vsf=AAAAAFpUAgECBwAACnAGAW5FUF4ZXUdDUUhEX1hRUC5ldQ--;vst=AAAAAAAAAAAAAAAAAAAAAABCXkYAQkdeVEJDQVtSVBRQRTYw;did=5fc.669;nat=yes>

 v=0
 o=Sonus_UAC 14218 13518 IN IP4 14.1.1.30
 s=SIP Media Capabilities
 c=IN IP4 14.1.1.30
 t=0 0
 m=audio 18600 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:18601

 2023/01/26 09:48:24.139050 17.17.17.211:5060 -> 77.1.1.1:2314
 SIP/2.0 183 Session Progress
 From: "My, User"<sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 To: <sip:300987654321@17.17.17.211:5060>;tag=gK0e80b4b9
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 1 INVITE
 Allow: INVITE,ACK,CANCEL,BYE,INFO,PRACK,UPDATE,OPTIONS
 Server: Voiceland SBC
 Content-Length:  250
 Content-Disposition: session; handling=required
 Content-Type: application/sdp
 Via: SIP/2.0/UDP 192.168.80.228:5060
 ;received=77.1.1.1;branch=z9hG4bK-524287-1---9bbfa2727a1f3803;rport=2314
 Contact: <sip:atpsh-b5-62dfd3a3-cd5ed-1d354@17.17.17.181>
 Record-Route:

<sip:17.17.17.211;lr;ftag=07ece97c;vsf=AAAAAFpUAgECBwAACnAGAW5FUF4ZXUdDUUhEX1hRUC5ldQ--;vst=AAAAAAAAAAAAAAAAAAAAAABCXkYAQkdeVEJDQVtSVBRQRTYw;did=5fc.669;nat=yes>

 v=0
 o=Sonus_UAC 14218 13518 IN IP4 14.1.1.28
 s=SIP Media Capabilities
 c=IN IP4 14.1.1.28
 t=0 0
 m=audio 13288 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:13289

 2023/01/26 09:48:24.200575 17.17.17.211:5060 -> 77.1.1.1:2314
 SIP/2.0 183 Session Progress
 From: "My, User"<sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 To: <sip:300987654321@17.17.17.211:5060>;tag=gK0e80b4b9
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 1 INVITE
 Allow: INVITE,ACK,CANCEL,BYE,INFO,PRACK,UPDATE,OPTIONS
 Server: Voiceland SBC
 Content-Length:  250
 Content-Disposition: session; handling=required
 Content-Type: application/sdp
 Via: SIP/2.0/UDP 192.168.80.228:5060
 ;received=77.1.1.1;branch=z9hG4bK-524287-1---9bbfa2727a1f3803;rport=2314
 Contact: <sip:atpsh-b5-62dfd3a3-cd5ed-1d354@17.17.17.181>
 Record-Route:

<sip:17.17.17.211;lr;ftag=07ece97c;vsf=AAAAAFpUAgECBwAACnAGAW5FUF4ZXUdDUUhEX1hRUC5ldQ--;vst=AAAAAAAAAAAAAAAAAAAAAABCXkYAQkdeVEJDQVtSVBRQRTYw;did=5fc.669;nat=yes>

 v=0
 o=Sonus_UAC 14218 13518 IN IP4 14.1.1.28
 s=SIP Media Capabilities
 c=IN IP4 14.1.1.28
 t=0 0
 m=audio 13288 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:13289

 2023/01/26 09:48:30.115324 17.17.17.181:5060 -> 17.17.17.211:5060
 SIP/2.0 200 OK
 From: 301234567890<sip:301234567890@sip.mydomain.com>;tag=07ece97c
 To: <sip:300987654321@sip.mydomain.com>;tag=gK0e80b4b9
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 1 INVITE
 Accept: application/sdp, application/isup, application/dtmf,
 application/dtmf-relay,  multipart/mixed
 Allow: INVITE,ACK,CANCEL,BYE,INFO,PRACK,UPDATE,OPTIONS
 Server: Voiceland SBC
 Require: timer
 Supported: timer
 Session-Expires: 600;refresher=uac
 Content-Length:  250
 Content-Disposition: session; handling=required
 Content-Type: application/sdp
 Via: SIP/2.0/UDP

17.17.17.211;rport=5060;branch=z9hG4bKc2d8.34fe87ef37b154d931766bddfd3da41d.0,SIP/2.0/UDP
 192.168.80.228:5060
 ;received=77.1.1.1;branch=z9hG4bK-524287-1---9bbfa2727a1f3803;rport=2314
 Contact: <sip:atpsh-b5-62dfd3a3-cd5ed-1d354@17.17.17.181>
 Record-Route:

<sip:17.17.17.211;lr;ftag=07ece97c;vsf=AAAAAFpUAgECBwAACnAGAW5FUF4ZXUdDUUhEX1hRUC5ldQ--;vst=AAAAAAAAAAAAAAAAAAAAAABCXkYAQkdeVEJDQVtSVBRQRTYw;did=5fc.669;nat=yes>

 v=0
 o=Sonus_UAC 14218 13518 IN IP4 14.1.1.30
 s=SIP Media Capabilities
 c=IN IP4 14.1.1.30
 t=0 0
 m=audio 18600 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:18601

 2023/01/26 09:48:30.336507 17.17.17.211:5060 -> 77.1.1.1:2314
 SIP/2.0 200 OK
 From: "My, User"<sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 To: <sip:300987654321@17.17.17.211:5060>;tag=gK0e80b4b9
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 1 INVITE
 Accept: application/sdp, application/isup, application/dtmf,
 application/dtmf-relay,  multipart/mixed
 Allow: INVITE,ACK,CANCEL,BYE,INFO,PRACK,UPDATE,OPTIONS
 Server: Voiceland SBC
 Require: timer
 Supported: timer
 Session-Expires: 600;refresher=uac
 Content-Length:  250
 Content-Disposition: session; handling=required
 Content-Type: application/sdp
 Via: SIP/2.0/UDP 192.168.80.228:5060
 ;received=77.1.1.1;branch=z9hG4bK-524287-1---9bbfa2727a1f3803;rport=2314
 Contact: <sip:atpsh-b5-62dfd3a3-cd5ed-1d354@17.17.17.181>
 Record-Route:

<sip:17.17.17.211;lr;ftag=07ece97c;vsf=AAAAAFpUAgECBwAACnAGAW5FUF4ZXUdDUUhEX1hRUC5ldQ--;vst=AAAAAAAAAAAAAAAAAAAAAABCXkYAQkdeVEJDQVtSVBRQRTYw;did=5fc.669;nat=yes>

 v=0
 o=Sonus_UAC 14218 13518 IN IP4 14.1.1.28
 s=SIP Media Capabilities
 c=IN IP4 14.1.1.28
 t=0 0
 m=audio 13288 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:13289

 2023/01/26 09:48:30.432457 17.17.17.181:5060 -> 17.17.17.211:5060
 SIP/2.0 200 OK
 From: 301234567890<sip:301234567890@sip.mydomain.com>;tag=07ece97c
 To: <sip:300987654321@sip.mydomain.com>;tag=gK0e80b4b9
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 1 INVITE
 Accept: application/sdp, application/isup, application/dtmf,
 application/dtmf-relay,  multipart/mixed
 Allow: INVITE,ACK,CANCEL,BYE,INFO,PRACK,UPDATE,OPTIONS
 Server: Voiceland SBC
 Require: timer
 Supported: timer
 Session-Expires: 600;refresher=uac
 Content-Length:  242
 Content-Disposition: session; handling=required
 Content-Type: application/sdp
 Via: SIP/2.0/UDP

17.17.17.211;rport=5060;branch=z9hG4bKc2d8.34fe87ef37b154d931766bddfd3da41d.0,SIP/2.0/UDP
 192.168.80.228:5060
 ;received=77.1.1.1;branch=z9hG4bK-524287-1---9bbfa2727a1f3803;rport=2314
 Contact: <sip:atpsh-b5-62dfd3a3-cd5ed-1d354@17.17.17.181>
 Record-Route:

<sip:17.17.17.211;lr;ftag=07ece97c;vsf=AAAAAFpUAgECBwAACnAGAW5FUF4ZXUdDUUhEX1hRUC5ldQ--;vst=AAAAAAAAAAAAAAAAAAAAAABCXkYAQkdeVEJDQVtSVBRQRTYw;did=5fc.669;nat=yes>

 v=0
 o=Sonus_UAC 14218 13518 IN IP4 194.154.142.193
 s=SIP Media Capabilities
 c=IN IP4 194.154.142.196
 t=0 0
 m=audio 10764 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

 2023/01/26 09:48:30.433017 17.17.17.211:5060 -> 77.1.1.1:2314
 SIP/2.0 200 OK
 From: "My, User"<sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 To: <sip:300987654321@17.17.17.211:5060>;tag=gK0e80b4b9
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 1 INVITE
 Accept: application/sdp, application/isup, application/dtmf,
 application/dtmf-relay,  multipart/mixed
 Allow: INVITE,ACK,CANCEL,BYE,INFO,PRACK,UPDATE,OPTIONS
 Server: Voiceland SBC
 Require: timer
 Supported: timer
 Session-Expires: 600;refresher=uac
 Content-Length:  242
 Content-Disposition: session; handling=required
 Content-Type: application/sdp
 Via: SIP/2.0/UDP 192.168.80.228:5060
 ;received=77.1.1.1;branch=z9hG4bK-524287-1---9bbfa2727a1f3803;rport=2314
 Contact: <sip:atpsh-b5-62dfd3a3-cd5ed-1d354@17.17.17.181>
 Record-Route:

<sip:17.17.17.211;lr;ftag=07ece97c;vsf=AAAAAFpUAgECBwAACnAGAW5FUF4ZXUdDUUhEX1hRUC5ldQ--;vst=AAAAAAAAAAAAAAAAAAAAAABCXkYAQkdeVEJDQVtSVBRQRTYw;did=5fc.669;nat=yes>

 v=0
 o=Sonus_UAC 14218 13518 IN IP4 194.154.142.193
 s=SIP Media Capabilities
 c=IN IP4 194.154.142.196
 t=0 0
 m=audio 10764 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

 2023/01/26 09:48:30.457268 77.1.1.1:2314 -> 17.17.17.211:5060
 ACK sip:atpsh-b5-62dfd3a3-cd5ed-1d354@17.17.17.181 SIP/2.0
 Via: SIP/2.0/UDP 192.168.80.228:5060
 ;branch=z9hG4bK-524287-1---5ff61b7097f10965;rport
 Max-Forwards: 70
 Route:

<sip:17.17.17.211;lr;ftag=07ece97c;vsf=AAAAAFpUAgECBwAACnAGAW5FUF4ZXUdDUUhEX1hRUC5ldQ--;vst=AAAAAAAAAAAAAAAAAAAAAABCXkYAQkdeVEJDQVtSVBRQRTYw;did=5fc.669;nat=yes>
 Contact: <sip:301234567890@77.1.1.1:20125>
 To: <sip:300987654321@17.17.17.211:5060>;tag=gK0e80b4b9
 From: "My, User"<sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 1 ACK
 User-Agent: 3CXPhoneSystem 18.0.6.905 (905)
 Content-Length: 0

 2023/01/26 09:48:30.481470 17.17.17.211:5060 -> 17.17.17.181:5060
 ACK sip:atpsh-b5-62dfd3a3-cd5ed-1d354@17.17.17.181 SIP/2.0
 Via: SIP/2.0/UDP
 17.17.17.211;branch=z9hG4bKc2d8.44ee18452b274c8de283aa3c27549f4e.0
 Via: SIP/2.0/UDP 192.168.80.228:5060
 ;received=77.1.1.1;branch=z9hG4bK-524287-1---5ff61b7097f10965;rport=2314
 Max-Forwards: 69
 Contact: <sip:301234567890@77.1.1.1:20125;alias=77.1.1.1~2314~1>
 To: <sip:300987654321@sip.mydomain.com>;tag=gK0e80b4b9
 From: "My, User"<sip:301234567890@sip.mydomain.com>;tag=07ece97c
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 1 ACK
 User-Agent: 3CXPhoneSystem 18.0.6.905 (905)
 Content-Length: 0

 2023/01/26 09:48:30.555470 77.1.1.1:2314 -> 17.17.17.211:5060
 ACK sip:atpsh-b5-62dfd3a3-cd5ed-1d354@17.17.17.181 SIP/2.0
 Via: SIP/2.0/UDP 192.168.80.228:5060
 ;branch=z9hG4bK-524287-1---5ff61b7097f10965;rport
 Max-Forwards: 70
 Route:

<sip:17.17.17.211;lr;ftag=07ece97c;vsf=AAAAAFpUAgECBwAACnAGAW5FUF4ZXUdDUUhEX1hRUC5ldQ--;vst=AAAAAAAAAAAAAAAAAAAAAABCXkYAQkdeVEJDQVtSVBRQRTYw;did=5fc.669;nat=yes>
 Contact: <sip:301234567890@77.1.1.1:20125>
 To: <sip:300987654321@17.17.17.211:5060>;tag=gK0e80b4b9
 From: "My, User"<sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 1 ACK
 User-Agent: 3CXPhoneSystem 18.0.6.905 (905)
 Content-Length: 0

 2023/01/26 09:48:30.557824 17.17.17.211:5060 -> 17.17.17.181:5060
 ACK sip:atpsh-b5-62dfd3a3-cd5ed-1d354@17.17.17.181 SIP/2.0
 Via: SIP/2.0/UDP
 17.17.17.211;branch=z9hG4bKc2d8.44ee18452b274c8de283aa3c27549f4e.0
 Via: SIP/2.0/UDP 192.168.80.228:5060
 ;received=77.1.1.1;branch=z9hG4bK-524287-1---5ff61b7097f10965;rport=2314
 Max-Forwards: 69
 Contact: <sip:301234567890@77.1.1.1:20125;alias=77.1.1.1~2314~1>
 To: <sip:300987654321@sip.mydomain.com>;tag=gK0e80b4b9
 From: "My, User"<sip:301234567890@sip.mydomain.com>;tag=07ece97c
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 1 ACK
 User-Agent: 3CXPhoneSystem 18.0.6.905 (905)
 Content-Length: 0

 2023/01/26 09:48:30.668634 17.17.17.181:5060 -> 17.17.17.211:5060
 INVITE sip:301234567890@77.1.1.1:20125;alias=77.1.1.1~2314~1 SIP/2.0
 Via: SIP/2.0/UDP
 17.17.17.181;branch=z9hG4bK7b5d.78276307977b5b2776919ce1f1e76d49.0
 From: <sip:300987654321@sip.mydomain.com>;tag=gK0e80b4b9
 To: "301234567890" <sip:301234567890@sip.mydomain.com>;tag=07ece97c
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 INVITE
 Max-Forwards: 69
 Allow: INVITE,ACK,CANCEL,BYE,INFO,PRACK,UPDATE,OPTIONS
 Accept: application/sdp, application/isup, application/dtmf,
 application/dtmf-relay,  multipart/mixed
 Supported: timer
 Session-Expires: 600;refresher=uas
 Min-SE: 90
 Content-Length:  297
 Content-Disposition: session; handling=required
 Content-Type: application/sdp
 Route:

<sip:17.17.17.211;lr;ftag=07ece97c;vsf=AAAAAFpUAgECBwAACnAGAW5FUF4ZXUdDUUhEX1hRUC5ldQ--;vst=AAAAAAAAAAAAAAAAAAAAAABCXkYAQkdeVEJDQVtSVBRQRTYw;did=5fc.669;nat=yes>
 Contact: <sip:atpsh-b5-62dfd3a3-cd5ed-1d354@17.17.17.181>

 v=0
 o=Sonus_UAC 14218 13519 IN IP4 14.1.1.30
 s=SIP Media Capabilities
 c=IN IP4 14.1.1.30
 t=0 0
 m=audio 18600 RTP/AVP 8 18 101
 a=maxptime:20
 a=rtpmap:8 PCMA/8000
 a=rtpmap:18 G729/8000
 a=rtpmap:101 telephone-event/8000
 a=fmtp:18 annexb=no
 a=fmtp:101 0-15
 a=sendrecv
 a=rtcp:18601

 2023/01/26 09:48:30.679743 17.17.17.211:5060 -> 17.17.17.181:5060
 SIP/2.0 100 trying -- your call is important to us
 Via: SIP/2.0/UDP
 17.17.17.181;branch=z9hG4bK7b5d.78276307977b5b2776919ce1f1e76d49.0;rport=5060
 From: <sip:300987654321@sip.mydomain.com>;tag=gK0e80b4b9
 To: "301234567890" <sip:301234567890@sip.mydomain.com>;tag=07ece97c
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 INVITE
 Server: Supervoice
 Content-Length: 0

 2023/01/26 09:48:30.740803 17.17.17.211:5060 -> 77.1.1.1:2314
 INVITE sip:301234567890@77.1.1.1:20125 SIP/2.0
 Via: SIP/2.0/UDP
 17.17.17.211;branch=z9hG4bK7b5d.90b692fac0d1cc8a2ac460a67a02aec9.0
 Via: SIP/2.0/UDP
 17.17.17.181;rport=5060;branch=z9hG4bK7b5d.78276307977b5b2776919ce1f1e76d49.0
 From: <sip:300987654321@17.17.17.211:5060>;tag=gK0e80b4b9
 To: "301234567890" <sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 INVITE
 Max-Forwards: 68
 Allow: INVITE,ACK,CANCEL,BYE,INFO,PRACK,UPDATE,OPTIONS
 Accept: application/sdp, application/isup, application/dtmf,
 application/dtmf-relay,  multipart/mixed
 Supported: timer
 Session-Expires: 600;refresher=uas
 Min-SE: 90
 Content-Length:  297
 Content-Disposition: session; handling=required
 Content-Type: application/sdp
 Contact: <sip:atpsh-b5-62dfd3a3-cd5ed-1d354@17.17.17.181>

 v=0
 o=Sonus_UAC 14218 13519 IN IP4 14.1.1.28
 s=SIP Media Capabilities
 c=IN IP4 14.1.1.28
 t=0 0
 m=audio 13288 RTP/AVP 8 18 101
 a=maxptime:20
 a=rtpmap:8 PCMA/8000
 a=rtpmap:18 G729/8000
 a=rtpmap:101 telephone-event/8000
 a=fmtp:18 annexb=no
 a=fmtp:101 0-15
 a=sendrecv
 a=rtcp:13289

 2023/01/26 09:48:30.893512 77.1.1.1:2314 -> 17.17.17.211:5060
 SIP/2.0 100 Trying
 Via: SIP/2.0/UDP
 17.17.17.211;branch=z9hG4bK7b5d.90b692fac0d1cc8a2ac460a67a02aec9.0
 Via: SIP/2.0/UDP
 17.17.17.181;rport=5060;branch=z9hG4bK7b5d.78276307977b5b2776919ce1f1e76d49.0
 To: "301234567890" <sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 From: <sip:300987654321@17.17.17.211:5060>;tag=gK0e80b4b9
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 INVITE
 Content-Length: 0

 2023/01/26 09:48:31.026742 77.1.1.1:2314 -> 17.17.17.211:5060
 SIP/2.0 200 OK
 Via: SIP/2.0/UDP
 17.17.17.211;branch=z9hG4bK7b5d.90b692fac0d1cc8a2ac460a67a02aec9.0
 Via: SIP/2.0/UDP
 17.17.17.181;rport=5060;branch=z9hG4bK7b5d.78276307977b5b2776919ce1f1e76d49.0
 Require: timer
 Contact: <sip:301234567890@77.1.1.1:20125>
 To: "301234567890"<sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 From: <sip:300987654321@17.17.17.211:5060>;tag=gK0e80b4b9
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 INVITE
 Session-Expires: 600;refresher=uas
 Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY,
 REFER, INFO, MESSAGE, UPDATE
 Content-Type: application/sdp
 Supported: replaces, timer
 User-Agent: 3CXPhoneSystem 18.0.6.905 (905)
 Content-Length: 259

 v=0
 o=3cxPS 792019937001472 2393157908037634 IN IP4 77.1.1.1
 s=3cxPS Audio call
 c=IN IP4 77.1.1.1
 t=0 0
 m=audio 9054 RTP/AVP 8 18 101
 a=rtpmap:8 PCMA/8000
 a=rtpmap:18 G729/8000
 a=fmtp:18 annexb=no
 a=rtpmap:101 telephone-event/8000
 a=sendrecv

 2023/01/26 09:48:31.093656 17.17.17.211:5060 -> 17.17.17.181:5060
 SIP/2.0 200 OK
 Via: SIP/2.0/UDP
 17.17.17.181;rport=5060;branch=z9hG4bK7b5d.78276307977b5b2776919ce1f1e76d49.0
 Require: timer
 Contact: <sip:301234567890@77.1.1.1:20125>
 To: "301234567890" <sip:301234567890@sip.mydomain.com>;tag=07ece97c
 From: <sip:300987654321@sip.mydomain.com>;tag=gK0e80b4b9
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 INVITE
 Session-Expires: 600;refresher=uas
 Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY,
 REFER, INFO, MESSAGE, UPDATE
 Content-Type: application/sdp
 Supported: replaces, timer
 User-Agent: 3CXPhoneSystem 18.0.6.905 (905)
 Content-Length: 276

 v=0
 o=3cxPS 792019937001472 2393157908037634 IN IP4 14.1.1.28
 s=3cxPS Audio call
 c=IN IP4 14.1.1.28
 t=0 0
 m=audio 13278 RTP/AVP 8 18 101
 a=rtpmap:8 PCMA/8000
 a=rtpmap:18 G729/8000
 a=rtpmap:101 telephone-event/8000
 a=fmtp:18 annexb=no
 a=sendrecv
 a=rtcp:13279

 2023/01/26 09:48:31.254591 17.17.17.181:5060 -> 17.17.17.211:5060
 ACK sip:301234567890@77.1.1.1:20125 SIP/2.0
 Via: SIP/2.0/UDP
 17.17.17.181;branch=z9hG4bK7b5d.48f49235d45a0f6f9efdad9d6d8224bd.0
 From: <sip:300987654321@sip.mydomain.com>;tag=gK0e80b4b9
 To: "301234567890" <sip:301234567890@sip.mydomain.com>;tag=07ece97c
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 ACK
 Max-Forwards: 69
 Content-Length: 0
 Route:

<sip:17.17.17.211;lr;ftag=07ece97c;vsf=AAAAAFpUAgECBwAACnAGAW5FUF4ZXUdDUUhEX1hRUC5ldQ--;vst=AAAAAAAAAAAAAAAAAAAAAABCXkYAQkdeVEJDQVtSVBRQRTYw;did=5fc.669;nat=yes>
 Contact: <sip:atpsh-b5-62dfd3a3-cd5ed-1d354@17.17.17.181>

 2023/01/26 09:48:31.260901 17.17.17.211:5060 -> 77.1.1.1:20125
 ACK sip:301234567890@77.1.1.1:20125 SIP/2.0
 Via: SIP/2.0/UDP
 17.17.17.211;branch=z9hG4bK7b5d.e8fb34e79623843d516ae77257014e2d.0
 Via: SIP/2.0/UDP
 17.17.17.181;rport=5060;branch=z9hG4bK7b5d.48f49235d45a0f6f9efdad9d6d8224bd.0
 From: <sip:300987654321@17.17.17.211:5060>;tag=gK0e80b4b9
 To: "301234567890" <sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 ACK
 Max-Forwards: 68
 Content-Length: 0
 Contact: <sip:atpsh-b5-62dfd3a3-cd5ed-1d354@17.17.17.181>

 2023/01/26 09:48:31.530836 77.1.1.1:2314 -> 17.17.17.211:5060
 SIP/2.0 200 OK
 Via: SIP/2.0/UDP
 17.17.17.211;branch=z9hG4bK7b5d.90b692fac0d1cc8a2ac460a67a02aec9.0
 Via: SIP/2.0/UDP
 17.17.17.181;rport=5060;branch=z9hG4bK7b5d.78276307977b5b2776919ce1f1e76d49.0
 Require: timer
 Contact: <sip:301234567890@77.1.1.1:20125>
 To: "301234567890"<sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 From: <sip:300987654321@17.17.17.211:5060>;tag=gK0e80b4b9
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 INVITE
 Session-Expires: 600;refresher=uas
 Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY,
 REFER, INFO, MESSAGE, UPDATE
 Content-Type: application/sdp
 Supported: replaces, timer
 User-Agent: 3CXPhoneSystem 18.0.6.905 (905)
 Content-Length: 259

 v=0
 o=3cxPS 792019937001472 2393157908037634 IN IP4 77.1.1.1
 s=3cxPS Audio call
 c=IN IP4 77.1.1.1
 t=0 0
 m=audio 9054 RTP/AVP 8 18 101
 a=rtpmap:8 PCMA/8000
 a=rtpmap:18 G729/8000
 a=fmtp:18 annexb=no
 a=rtpmap:101 telephone-event/8000
 a=sendrecv

 2023/01/26 09:48:31.531333 17.17.17.211:5060 -> 17.17.17.181:5060
 SIP/2.0 200 OK
 Via: SIP/2.0/UDP
 17.17.17.181;rport=5060;branch=z9hG4bK7b5d.78276307977b5b2776919ce1f1e76d49.0
 Require: timer
 Contact: <sip:301234567890@77.1.1.1:20125>
 To: "301234567890" <sip:301234567890@sip.mydomain.com>;tag=07ece97c
 From: <sip:300987654321@sip.mydomain.com>;tag=gK0e80b4b9
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 INVITE
 Session-Expires: 600;refresher=uas
 Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY,
 REFER, INFO, MESSAGE, UPDATE
 Content-Type: application/sdp
 Supported: replaces, timer
 User-Agent: 3CXPhoneSystem 18.0.6.905 (905)
 Content-Length: 259

 v=0
 o=3cxPS 792019937001472 2393157908037634 IN IP4 77.1.1.1
 s=3cxPS Audio call
 c=IN IP4 77.1.1.1
 t=0 0
 m=audio 9054 RTP/AVP 8 18 101
 a=rtpmap:8 PCMA/8000
 a=rtpmap:18 G729/8000
 a=fmtp:18 annexb=no
 a=rtpmap:101 telephone-event/8000
 a=sendrecv

 2023/01/26 09:48:31.609667 17.17.17.181:5060 -> 17.17.17.211:5060
 ACK sip:301234567890@77.1.1.1:20125 SIP/2.0
 Via: SIP/2.0/UDP
 17.17.17.181;branch=z9hG4bK7b5d.6cff4a8159c123f434b422c73e17a08c.0
 From: <sip:300987654321@sip.mydomain.com>;tag=gK0e80b4b9
 To: "301234567890" <sip:301234567890@sip.mydomain.com>;tag=07ece97c
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 ACK
 Max-Forwards: 69
 Content-Length: 0
 Route:

<sip:17.17.17.211;lr;ftag=07ece97c;vsf=AAAAAFpUAgECBwAACnAGAW5FUF4ZXUdDUUhEX1hRUC5ldQ--;vst=AAAAAAAAAAAAAAAAAAAAAABCXkYAQkdeVEJDQVtSVBRQRTYw;did=5fc.669;nat=yes>
 Contact: <sip:atpsh-b5-62dfd3a3-cd5ed-1d354@17.17.17.181>

 2023/01/26 09:48:31.612312 17.17.17.211:5060 -> 77.1.1.1:20125
 ACK sip:301234567890@77.1.1.1:20125 SIP/2.0
 Via: SIP/2.0/UDP
 17.17.17.211;branch=z9hG4bK7b5d.63edf375f6b899dfa9d2d9a2dcee4dfd.0
 Via: SIP/2.0/UDP
 17.17.17.181;rport=5060;branch=z9hG4bK7b5d.6cff4a8159c123f434b422c73e17a08c.0
 From: <sip:300987654321@17.17.17.211:5060>;tag=gK0e80b4b9
 To: "301234567890" <sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 ACK
 Max-Forwards: 68
 Content-Length: 0
 Contact: <sip:atpsh-b5-62dfd3a3-cd5ed-1d354@17.17.17.181>

 2023/01/26 09:48:32.536512 77.1.1.1:2314 -> 17.17.17.211:5060
 SIP/2.0 200 OK
 Via: SIP/2.0/UDP
 17.17.17.211;branch=z9hG4bK7b5d.90b692fac0d1cc8a2ac460a67a02aec9.0
 Via: SIP/2.0/UDP
 17.17.17.181;rport=5060;branch=z9hG4bK7b5d.78276307977b5b2776919ce1f1e76d49.0
 Require: timer
 Contact: <sip:301234567890@77.1.1.1:20125>
 To: "301234567890"<sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 From: <sip:300987654321@17.17.17.211:5060>;tag=gK0e80b4b9
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 INVITE
 Session-Expires: 600;refresher=uas
 Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY,
 REFER, INFO, MESSAGE, UPDATE
 Content-Type: application/sdp
 Supported: replaces, timer
 User-Agent: 3CXPhoneSystem 18.0.6.905 (905)
 Content-Length: 259

 v=0
 o=3cxPS 792019937001472 2393157908037634 IN IP4 77.1.1.1
 s=3cxPS Audio call
 c=IN IP4 77.1.1.1
 t=0 0
 m=audio 9054 RTP/AVP 8 18 101
 a=rtpmap:8 PCMA/8000
 a=rtpmap:18 G729/8000
 a=fmtp:18 annexb=no
 a=rtpmap:101 telephone-event/8000
 a=sendrecv

 2023/01/26 09:48:32.536839 17.17.17.211:5060 -> 17.17.17.181:5060
 SIP/2.0 200 OK
 Via: SIP/2.0/UDP
 17.17.17.181;rport=5060;branch=z9hG4bK7b5d.78276307977b5b2776919ce1f1e76d49.0
 Require: timer
 Contact: <sip:301234567890@77.1.1.1:20125>
 To: "301234567890" <sip:301234567890@sip.mydomain.com>;tag=07ece97c
 From: <sip:300987654321@sip.mydomain.com>;tag=gK0e80b4b9
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 INVITE
 Session-Expires: 600;refresher=uas
 Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY,
 REFER, INFO, MESSAGE, UPDATE
 Content-Type: application/sdp
 Supported: replaces, timer
 User-Agent: 3CXPhoneSystem 18.0.6.905 (905)
 Content-Length: 259

 v=0
 o=3cxPS 792019937001472 2393157908037634 IN IP4 77.1.1.1
 s=3cxPS Audio call
 c=IN IP4 77.1.1.1
 t=0 0
 m=audio 9054 RTP/AVP 8 18 101
 a=rtpmap:8 PCMA/8000
 a=rtpmap:18 G729/8000
 a=fmtp:18 annexb=no
 a=rtpmap:101 telephone-event/8000
 a=sendrecv

 2023/01/26 09:48:32.623207 17.17.17.181:5060 -> 17.17.17.211:5060
 ACK sip:301234567890@77.1.1.1:20125 SIP/2.0
 Via: SIP/2.0/UDP
 17.17.17.181;branch=z9hG4bK7b5d.48a5467fc248682a755e70a672268f79.0
 From: <sip:300987654321@sip.mydomain.com>;tag=gK0e80b4b9
 To: "301234567890" <sip:301234567890@sip.mydomain.com>;tag=07ece97c
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 ACK
 Max-Forwards: 69
 Content-Length: 0
 Route:

<sip:17.17.17.211;lr;ftag=07ece97c;vsf=AAAAAFpUAgECBwAACnAGAW5FUF4ZXUdDUUhEX1hRUC5ldQ--;vst=AAAAAAAAAAAAAAAAAAAAAABCXkYAQkdeVEJDQVtSVBRQRTYw;did=5fc.669;nat=yes>
 Contact: <sip:atpsh-b5-62dfd3a3-cd5ed-1d354@17.17.17.181>

 2023/01/26 09:48:32.641928 17.17.17.211:5060 -> 77.1.1.1:20125
 ACK sip:301234567890@77.1.1.1:20125 SIP/2.0
 Via: SIP/2.0/UDP
 17.17.17.211;branch=z9hG4bK7b5d.745a55762e847bc3cf56d27926f7e62d.0
 Via: SIP/2.0/UDP
 17.17.17.181;rport=5060;branch=z9hG4bK7b5d.48a5467fc248682a755e70a672268f79.0
 From: <sip:300987654321@17.17.17.211:5060>;tag=gK0e80b4b9
 To: "301234567890" <sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 ACK
 Max-Forwards: 68
 Content-Length: 0
 Contact: <sip:atpsh-b5-62dfd3a3-cd5ed-1d354@17.17.17.181>

 2023/01/26 09:48:34.540735 77.1.1.1:2314 -> 17.17.17.211:5060
 SIP/2.0 200 OK
 Via: SIP/2.0/UDP
 17.17.17.211;branch=z9hG4bK7b5d.90b692fac0d1cc8a2ac460a67a02aec9.0
 Via: SIP/2.0/UDP
 17.17.17.181;rport=5060;branch=z9hG4bK7b5d.78276307977b5b2776919ce1f1e76d49.0
 Require: timer
 Contact: <sip:301234567890@77.1.1.1:20125>
 To: "301234567890"<sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 From: <sip:300987654321@17.17.17.211:5060>;tag=gK0e80b4b9
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 INVITE
 Session-Expires: 600;refresher=uas
 Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY,
 REFER, INFO, MESSAGE, UPDATE
 Content-Type: application/sdp
 Supported: replaces, timer
 User-Agent: 3CXPhoneSystem 18.0.6.905 (905)
 Content-Length: 259

 v=0
 o=3cxPS 792019937001472 2393157908037634 IN IP4 77.1.1.1
 s=3cxPS Audio call
 c=IN IP4 77.1.1.1
 t=0 0
 m=audio 9054 RTP/AVP 8 18 101
 a=rtpmap:8 PCMA/8000
 a=rtpmap:18 G729/8000
 a=fmtp:18 annexb=no
 a=rtpmap:101 telephone-event/8000
 a=sendrecv

 2023/01/26 09:48:34.541310 17.17.17.211:5060 -> 17.17.17.181:5060
 SIP/2.0 200 OK
 Via: SIP/2.0/UDP
 17.17.17.181;rport=5060;branch=z9hG4bK7b5d.78276307977b5b2776919ce1f1e76d49.0
 Require: timer
 Contact: <sip:301234567890@77.1.1.1:20125>
 To: "301234567890" <sip:301234567890@sip.mydomain.com>;tag=07ece97c
 From: <sip:300987654321@sip.mydomain.com>;tag=gK0e80b4b9
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 INVITE
 Session-Expires: 600;refresher=uas
 Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY,
 REFER, INFO, MESSAGE, UPDATE
 Content-Type: application/sdp
 Supported: replaces, timer
 User-Agent: 3CXPhoneSystem 18.0.6.905 (905)
 Content-Length: 259

 v=0
 o=3cxPS 792019937001472 2393157908037634 IN IP4 77.1.1.1
 s=3cxPS Audio call
 c=IN IP4 77.1.1.1
 t=0 0
 m=audio 9054 RTP/AVP 8 18 101
 a=rtpmap:8 PCMA/8000
 a=rtpmap:18 G729/8000
 a=fmtp:18 annexb=no
 a=rtpmap:101 telephone-event/8000
 a=sendrecv

 2023/01/26 09:48:34.590013 17.17.17.181:5060 -> 17.17.17.211:5060
 ACK sip:301234567890@77.1.1.1:20125 SIP/2.0
 Via: SIP/2.0/UDP
 17.17.17.181;branch=z9hG4bK7b5d.6c3274e7b34c3b780cfbe9180a4d5eb1.0
 From: <sip:300987654321@sip.mydomain.com>;tag=gK0e80b4b9
 To: "301234567890" <sip:301234567890@sip.mydomain.com>;tag=07ece97c
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 ACK
 Max-Forwards: 69
 Content-Length: 0
 Route:

<sip:17.17.17.211;lr;ftag=07ece97c;vsf=AAAAAFpUAgECBwAACnAGAW5FUF4ZXUdDUUhEX1hRUC5ldQ--;vst=AAAAAAAAAAAAAAAAAAAAAABCXkYAQkdeVEJDQVtSVBRQRTYw;did=5fc.669;nat=yes>
 Contact: <sip:atpsh-b5-62dfd3a3-cd5ed-1d354@17.17.17.181>

 2023/01/26 09:48:34.595763 17.17.17.211:5060 -> 77.1.1.1:20125
 ACK sip:301234567890@77.1.1.1:20125 SIP/2.0
 Via: SIP/2.0/UDP
 17.17.17.211;branch=z9hG4bK7b5d.6c6654fa1c2f4b1991d5b6d792f2f081.0
 Via: SIP/2.0/UDP
 17.17.17.181;rport=5060;branch=z9hG4bK7b5d.6c3274e7b34c3b780cfbe9180a4d5eb1.0
 From: <sip:300987654321@17.17.17.211:5060>;tag=gK0e80b4b9
 To: "301234567890" <sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 ACK
 Max-Forwards: 68
 Content-Length: 0
 Contact: <sip:atpsh-b5-62dfd3a3-cd5ed-1d354@17.17.17.181>

 2023/01/26 09:48:38.561756 77.1.1.1:2314 -> 17.17.17.211:5060
 SIP/2.0 200 OK
 Via: SIP/2.0/UDP
 17.17.17.211;branch=z9hG4bK7b5d.90b692fac0d1cc8a2ac460a67a02aec9.0
 Via: SIP/2.0/UDP
 17.17.17.181;rport=5060;branch=z9hG4bK7b5d.78276307977b5b2776919ce1f1e76d49.0
 Require: timer
 Contact: <sip:301234567890@77.1.1.1:20125>
 To: "301234567890"<sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 From: <sip:300987654321@17.17.17.211:5060>;tag=gK0e80b4b9
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 INVITE
 Session-Expires: 600;refresher=uas
 Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY,
 REFER, INFO, MESSAGE, UPDATE
 Content-Type: application/sdp
 Supported: replaces, timer
 User-Agent: 3CXPhoneSystem 18.0.6.905 (905)
 Content-Length: 259

 v=0
 o=3cxPS 792019937001472 2393157908037634 IN IP4 77.1.1.1
 s=3cxPS Audio call
 c=IN IP4 77.1.1.1
 t=0 0
 m=audio 9054 RTP/AVP 8 18 101
 a=rtpmap:8 PCMA/8000
 a=rtpmap:18 G729/8000
 a=fmtp:18 annexb=no
 a=rtpmap:101 telephone-event/8000
 a=sendrecv

 2023/01/26 09:48:38.562039 17.17.17.211:5060 -> 17.17.17.181:5060
 SIP/2.0 200 OK
 Via: SIP/2.0/UDP
 17.17.17.181;rport=5060;branch=z9hG4bK7b5d.78276307977b5b2776919ce1f1e76d49.0
 Require: timer
 Contact: <sip:301234567890@77.1.1.1:20125>
 To: "301234567890"<sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 From: <sip:300987654321@17.17.17.211:5060>;tag=gK0e80b4b9
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 INVITE
 Session-Expires: 600;refresher=uas
 Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY,
 REFER, INFO, MESSAGE, UPDATE
 Content-Type: application/sdp
 Supported: replaces, timer
 User-Agent: 3CXPhoneSystem 18.0.6.905 (905)
 Content-Length: 259

 v=0
 o=3cxPS 792019937001472 2393157908037634 IN IP4 77.1.1.1
 s=3cxPS Audio call
 c=IN IP4 77.1.1.1
 t=0 0
 m=audio 9054 RTP/AVP 8 18 101
 a=rtpmap:8 PCMA/8000
 a=rtpmap:18 G729/8000
 a=fmtp:18 annexb=no
 a=rtpmap:101 telephone-event/8000
 a=sendrecv

 2023/01/26 09:48:38.599703 17.17.17.181:5060 -> 17.17.17.211:5060
 ACK sip:301234567890@77.1.1.1:20125 SIP/2.0
 Via: SIP/2.0/UDP
 17.17.17.181;branch=z9hG4bK7b5d.ef7afaa26d39ee76ce9000b1203574e7.0
 From: <sip:300987654321@17.17.17.211:5060>;tag=gK0e80b4b9
 To: "301234567890"<sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 ACK
 Max-Forwards: 69
 Content-Length: 0
 Route:

<sip:17.17.17.211;lr;ftag=07ece97c;vsf=AAAAAFpUAgECBwAACnAGAW5FUF4ZXUdDUUhEX1hRUC5ldQ--;vst=AAAAAAAAAAAAAAAAAAAAAABCXkYAQkdeVEJDQVtSVBRQRTYw;did=5fc.669;nat=yes>
 Contact: <sip:atpsh-b5-62dfd3a3-cd5ed-1d354@17.17.17.181>

 2023/01/26 09:48:38.603466 17.17.17.211:5060 -> 77.1.1.1:20125
 ACK sip:301234567890@77.1.1.1:20125 SIP/2.0
 Via: SIP/2.0/UDP
 17.17.17.211;branch=z9hG4bK7b5d.e022b4e31f8266525e62f213dc4dd8ae.0
 Via: SIP/2.0/UDP
 17.17.17.181;rport=5060;branch=z9hG4bK7b5d.ef7afaa26d39ee76ce9000b1203574e7.0
 From: <sip:300987654321@sip.mydomain.com>;tag=gK0e80b4b9
 To: "301234567890"<sip:301234567890@sip.mydomain.com>;tag=07ece97c
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 ACK
 Max-Forwards: 68
 Content-Length: 0
 Contact: <sip:atpsh-b5-62dfd3a3-cd5ed-1d354@17.17.17.181>

 2023/01/26 09:48:42.584025 77.1.1.1:2314 -> 17.17.17.211:5060
 SIP/2.0 200 OK
 Via: SIP/2.0/UDP
 17.17.17.211;branch=z9hG4bK7b5d.90b692fac0d1cc8a2ac460a67a02aec9.0
 Via: SIP/2.0/UDP
 17.17.17.181;rport=5060;branch=z9hG4bK7b5d.78276307977b5b2776919ce1f1e76d49.0
 Require: timer
 Contact: <sip:301234567890@77.1.1.1:20125>
 To: "301234567890"<sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 From: <sip:300987654321@17.17.17.211:5060>;tag=gK0e80b4b9
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 INVITE
 Session-Expires: 600;refresher=uas
 Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY,
 REFER, INFO, MESSAGE, UPDATE
 Content-Type: application/sdp
 Supported: replaces, timer
 User-Agent: 3CXPhoneSystem 18.0.6.905 (905)
 Content-Length: 259

 v=0
 o=3cxPS 792019937001472 2393157908037634 IN IP4 77.1.1.1
 s=3cxPS Audio call
 c=IN IP4 77.1.1.1
 t=0 0
 m=audio 9054 RTP/AVP 8 18 101
 a=rtpmap:8 PCMA/8000
 a=rtpmap:18 G729/8000
 a=fmtp:18 annexb=no
 a=rtpmap:101 telephone-event/8000
 a=sendrecv

 2023/01/26 09:48:42.584257 17.17.17.211:5060 -> 17.17.17.181:5060
 SIP/2.0 200 OK
 Via: SIP/2.0/UDP
 17.17.17.181;rport=5060;branch=z9hG4bK7b5d.78276307977b5b2776919ce1f1e76d49.0
 Require: timer
 Contact: <sip:301234567890@77.1.1.1:20125>
 To: "301234567890"<sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 From: <sip:300987654321@17.17.17.211:5060>;tag=gK0e80b4b9
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 INVITE
 Session-Expires: 600;refresher=uas
 Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY,
 REFER, INFO, MESSAGE, UPDATE
 Content-Type: application/sdp
 Supported: replaces, timer
 User-Agent: 3CXPhoneSystem 18.0.6.905 (905)
 Content-Length: 259

 v=0
 o=3cxPS 792019937001472 2393157908037634 IN IP4 77.1.1.1
 s=3cxPS Audio call
 c=IN IP4 77.1.1.1
 t=0 0
 m=audio 9054 RTP/AVP 8 18 101
 a=rtpmap:8 PCMA/8000
 a=rtpmap:18 G729/8000
 a=fmtp:18 annexb=no
 a=rtpmap:101 telephone-event/8000
 a=sendrecv

 2023/01/26 09:48:42.622809 17.17.17.181:5060 -> 17.17.17.211:5060
 ACK sip:301234567890@77.1.1.1:20125 SIP/2.0
 Via: SIP/2.0/UDP
 17.17.17.181;branch=z9hG4bK7b5d.03eec221779917d79f0daa500f7a0cc6.0
 From: <sip:300987654321@17.17.17.211:5060>;tag=gK0e80b4b9
 To: "301234567890"<sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 ACK
 Max-Forwards: 69
 Content-Length: 0
 Route:

<sip:17.17.17.211;lr;ftag=07ece97c;vsf=AAAAAFpUAgECBwAACnAGAW5FUF4ZXUdDUUhEX1hRUC5ldQ--;vst=AAAAAAAAAAAAAAAAAAAAAABCXkYAQkdeVEJDQVtSVBRQRTYw;did=5fc.669;nat=yes>
 Contact: <sip:atpsh-b5-62dfd3a3-cd5ed-1d354@17.17.17.181>

 2023/01/26 09:48:42.626545 17.17.17.211:5060 -> 77.1.1.1:20125
 ACK sip:301234567890@77.1.1.1:20125 SIP/2.0
 Via: SIP/2.0/UDP
 17.17.17.211;branch=z9hG4bK7b5d.0e211693731e67705c85dd4844e42ce8.0
 Via: SIP/2.0/UDP
 17.17.17.181;rport=5060;branch=z9hG4bK7b5d.03eec221779917d79f0daa500f7a0cc6.0
 From: <sip:300987654321@sip.mydomain.com>;tag=gK0e80b4b9
 To: "301234567890"<sip:301234567890@sip.mydomain.com>;tag=07ece97c
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 ACK
 Max-Forwards: 68
 Content-Length: 0
 Contact: <sip:atpsh-b5-62dfd3a3-cd5ed-1d354@17.17.17.181>

 2023/01/26 09:48:46.629501 77.1.1.1:2314 -> 17.17.17.211:5060
 SIP/2.0 200 OK
 Via: SIP/2.0/UDP
 17.17.17.211;branch=z9hG4bK7b5d.90b692fac0d1cc8a2ac460a67a02aec9.0
 Via: SIP/2.0/UDP
 17.17.17.181;rport=5060;branch=z9hG4bK7b5d.78276307977b5b2776919ce1f1e76d49.0
 Require: timer
 Contact: <sip:301234567890@77.1.1.1:20125>
 To: "301234567890"<sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 From: <sip:300987654321@17.17.17.211:5060>;tag=gK0e80b4b9
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 INVITE
 Session-Expires: 600;refresher=uas
 Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY,
 REFER, INFO, MESSAGE, UPDATE
 Content-Type: application/sdp
 Supported: replaces, timer
 User-Agent: 3CXPhoneSystem 18.0.6.905 (905)
 Content-Length: 259

 v=0
 o=3cxPS 792019937001472 2393157908037634 IN IP4 77.1.1.1
 s=3cxPS Audio call
 c=IN IP4 77.1.1.1
 t=0 0
 m=audio 9054 RTP/AVP 8 18 101
 a=rtpmap:8 PCMA/8000
 a=rtpmap:18 G729/8000
 a=fmtp:18 annexb=no
 a=rtpmap:101 telephone-event/8000
 a=sendrecv

 2023/01/26 09:48:46.629961 17.17.17.211:5060 -> 17.17.17.181:5060
 SIP/2.0 200 OK
 Via: SIP/2.0/UDP
 17.17.17.181;rport=5060;branch=z9hG4bK7b5d.78276307977b5b2776919ce1f1e76d49.0
 Require: timer
 Contact: <sip:301234567890@77.1.1.1:20125>
 To: "301234567890"<sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 From: <sip:300987654321@17.17.17.211:5060>;tag=gK0e80b4b9
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 INVITE
 Session-Expires: 600;refresher=uas
 Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY,
 REFER, INFO, MESSAGE, UPDATE
 Content-Type: application/sdp
 Supported: replaces, timer
 User-Agent: 3CXPhoneSystem 18.0.6.905 (905)
 Content-Length: 259

 v=0
 o=3cxPS 792019937001472 2393157908037634 IN IP4 77.1.1.1
 s=3cxPS Audio call
 c=IN IP4 77.1.1.1
 t=0 0
 m=audio 9054 RTP/AVP 8 18 101
 a=rtpmap:8 PCMA/8000
 a=rtpmap:18 G729/8000
 a=fmtp:18 annexb=no
 a=rtpmap:101 telephone-event/8000
 a=sendrecv

 2023/01/26 09:48:46.676968 17.17.17.181:5060 -> 17.17.17.211:5060
 ACK sip:301234567890@77.1.1.1:20125 SIP/2.0
 Via: SIP/2.0/UDP
 17.17.17.181;branch=z9hG4bK7b5d.701d02748c09dee63b88ca1e96a4e371.0
 From: <sip:300987654321@17.17.17.211:5060>;tag=gK0e80b4b9
 To: "301234567890"<sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 ACK
 Max-Forwards: 69
 Content-Length: 0
 Route:

<sip:17.17.17.211;lr;ftag=07ece97c;vsf=AAAAAFpUAgECBwAACnAGAW5FUF4ZXUdDUUhEX1hRUC5ldQ--;vst=AAAAAAAAAAAAAAAAAAAAAABCXkYAQkdeVEJDQVtSVBRQRTYw;did=5fc.669;nat=yes>
 Contact: <sip:atpsh-b5-62dfd3a3-cd5ed-1d354@17.17.17.181>

 2023/01/26 09:48:46.682458 17.17.17.211:5060 -> 77.1.1.1:20125
 ACK sip:301234567890@77.1.1.1:20125 SIP/2.0
 Via: SIP/2.0/UDP
 17.17.17.211;branch=z9hG4bK7b5d.cc80042ad9e1838346f4cf6d66a4c13f.0
 Via: SIP/2.0/UDP
 17.17.17.181;rport=5060;branch=z9hG4bK7b5d.701d02748c09dee63b88ca1e96a4e371.0
 From: <sip:300987654321@sip.mydomain.com>;tag=gK0e80b4b9
 To: "301234567890"<sip:301234567890@sip.mydomain.com>;tag=07ece97c
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 ACK
 Max-Forwards: 68
 Content-Length: 0
 Contact: <sip:atpsh-b5-62dfd3a3-cd5ed-1d354@17.17.17.181>

 2023/01/26 09:48:50.636998 77.1.1.1:2314 -> 17.17.17.211:5060
 SIP/2.0 200 OK
 Via: SIP/2.0/UDP
 17.17.17.211;branch=z9hG4bK7b5d.90b692fac0d1cc8a2ac460a67a02aec9.0
 Via: SIP/2.0/UDP
 17.17.17.181;rport=5060;branch=z9hG4bK7b5d.78276307977b5b2776919ce1f1e76d49.0
 Require: timer
 Contact: <sip:301234567890@77.1.1.1:20125>
 To: "301234567890"<sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 From: <sip:300987654321@17.17.17.211:5060>;tag=gK0e80b4b9
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 INVITE
 Session-Expires: 600;refresher=uas
 Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY,
 REFER, INFO, MESSAGE, UPDATE
 Content-Type: application/sdp
 Supported: replaces, timer
 User-Agent: 3CXPhoneSystem 18.0.6.905 (905)
 Content-Length: 259

 v=0
 o=3cxPS 792019937001472 2393157908037634 IN IP4 77.1.1.1
 s=3cxPS Audio call
 c=IN IP4 77.1.1.1
 t=0 0
 m=audio 9054 RTP/AVP 8 18 101
 a=rtpmap:8 PCMA/8000
 a=rtpmap:18 G729/8000
 a=fmtp:18 annexb=no
 a=rtpmap:101 telephone-event/8000
 a=sendrecv

 2023/01/26 09:48:50.637287 17.17.17.211:5060 -> 17.17.17.181:5060
 SIP/2.0 200 OK
 Via: SIP/2.0/UDP
 17.17.17.181;rport=5060;branch=z9hG4bK7b5d.78276307977b5b2776919ce1f1e76d49.0
 Require: timer
 Contact: <sip:301234567890@77.1.1.1:20125>
 To: "301234567890"<sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 From: <sip:300987654321@17.17.17.211:5060>;tag=gK0e80b4b9
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 INVITE
 Session-Expires: 600;refresher=uas
 Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY,
 REFER, INFO, MESSAGE, UPDATE
 Content-Type: application/sdp
 Supported: replaces, timer
 User-Agent: 3CXPhoneSystem 18.0.6.905 (905)
 Content-Length: 259

 v=0
 o=3cxPS 792019937001472 2393157908037634 IN IP4 77.1.1.1
 s=3cxPS Audio call
 c=IN IP4 77.1.1.1
 t=0 0
 m=audio 9054 RTP/AVP 8 18 101
 a=rtpmap:8 PCMA/8000
 a=rtpmap:18 G729/8000
 a=fmtp:18 annexb=no
 a=rtpmap:101 telephone-event/8000
 a=sendrecv

 2023/01/26 09:48:50.675272 17.17.17.181:5060 -> 17.17.17.211:5060
 ACK sip:301234567890@77.1.1.1:20125 SIP/2.0
 Via: SIP/2.0/UDP
 17.17.17.181;branch=z9hG4bK7b5d.041bbf55bf3941bfbd16df0f3ca92cf1.0
 From: <sip:300987654321@17.17.17.211:5060>;tag=gK0e80b4b9
 To: "301234567890"<sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 ACK
 Max-Forwards: 69
 Content-Length: 0
 Route:

<sip:17.17.17.211;lr;ftag=07ece97c;vsf=AAAAAFpUAgECBwAACnAGAW5FUF4ZXUdDUUhEX1hRUC5ldQ--;vst=AAAAAAAAAAAAAAAAAAAAAABCXkYAQkdeVEJDQVtSVBRQRTYw;did=5fc.669;nat=yes>
 Contact: <sip:atpsh-b5-62dfd3a3-cd5ed-1d354@17.17.17.181>

 2023/01/26 09:48:50.681861 17.17.17.211:5060 -> 77.1.1.1:20125
 ACK sip:301234567890@77.1.1.1:20125 SIP/2.0
 Via: SIP/2.0/UDP
 17.17.17.211;branch=z9hG4bK7b5d.be45a1f76f0fcd5ce85292397ff68acc.0
 Via: SIP/2.0/UDP
 17.17.17.181;rport=5060;branch=z9hG4bK7b5d.041bbf55bf3941bfbd16df0f3ca92cf1.0
 From: <sip:300987654321@sip.mydomain.com>;tag=gK0e80b4b9
 To: "301234567890"<sip:301234567890@sip.mydomain.com>;tag=07ece97c
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 ACK
 Max-Forwards: 68
 Content-Length: 0
 Contact: <sip:atpsh-b5-62dfd3a3-cd5ed-1d354@17.17.17.181>

 2023/01/26 09:48:54.677049 77.1.1.1:2314 -> 17.17.17.211:5060
 SIP/2.0 200 OK
 Via: SIP/2.0/UDP
 17.17.17.211;branch=z9hG4bK7b5d.90b692fac0d1cc8a2ac460a67a02aec9.0
 Via: SIP/2.0/UDP
 17.17.17.181;rport=5060;branch=z9hG4bK7b5d.78276307977b5b2776919ce1f1e76d49.0
 Require: timer
 Contact: <sip:301234567890@77.1.1.1:20125>
 To: "301234567890"<sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 From: <sip:300987654321@17.17.17.211:5060>;tag=gK0e80b4b9
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 INVITE
 Session-Expires: 600;refresher=uas
 Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY,
 REFER, INFO, MESSAGE, UPDATE
 Content-Type: application/sdp
 Supported: replaces, timer
 User-Agent: 3CXPhoneSystem 18.0.6.905 (905)
 Content-Length: 259

 v=0
 o=3cxPS 792019937001472 2393157908037634 IN IP4 77.1.1.1
 s=3cxPS Audio call
 c=IN IP4 77.1.1.1
 t=0 0
 m=audio 9054 RTP/AVP 8 18 101
 a=rtpmap:8 PCMA/8000
 a=rtpmap:18 G729/8000
 a=fmtp:18 annexb=no
 a=rtpmap:101 telephone-event/8000
 a=sendrecv

 2023/01/26 09:48:54.677633 17.17.17.211:5060 -> 17.17.17.181:5060
 SIP/2.0 200 OK
 Via: SIP/2.0/UDP
 17.17.17.181;rport=5060;branch=z9hG4bK7b5d.78276307977b5b2776919ce1f1e76d49.0
 Require: timer
 Contact: <sip:301234567890@77.1.1.1:20125>
 To: "301234567890"<sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 From: <sip:300987654321@17.17.17.211:5060>;tag=gK0e80b4b9
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 INVITE
 Session-Expires: 600;refresher=uas
 Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY,
 REFER, INFO, MESSAGE, UPDATE
 Content-Type: application/sdp
 Supported: replaces, timer
 User-Agent: 3CXPhoneSystem 18.0.6.905 (905)
 Content-Length: 259

 v=0
 o=3cxPS 792019937001472 2393157908037634 IN IP4 77.1.1.1
 s=3cxPS Audio call
 c=IN IP4 77.1.1.1
 t=0 0
 m=audio 9054 RTP/AVP 8 18 101
 a=rtpmap:8 PCMA/8000
 a=rtpmap:18 G729/8000
 a=fmtp:18 annexb=no
 a=rtpmap:101 telephone-event/8000
 a=sendrecv

 2023/01/26 09:48:54.721399 17.17.17.181:5060 -> 17.17.17.211:5060
 ACK sip:301234567890@77.1.1.1:20125 SIP/2.0
 Via: SIP/2.0/UDP
 17.17.17.181;branch=z9hG4bK7b5d.6ce35eaf9a5805bf47c868cd80c09478.0
 From: <sip:300987654321@17.17.17.211:5060>;tag=gK0e80b4b9
 To: "301234567890"<sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 ACK
 Max-Forwards: 69
 Content-Length: 0
 Route:

<sip:17.17.17.211;lr;ftag=07ece97c;vsf=AAAAAFpUAgECBwAACnAGAW5FUF4ZXUdDUUhEX1hRUC5ldQ--;vst=AAAAAAAAAAAAAAAAAAAAAABCXkYAQkdeVEJDQVtSVBRQRTYw;did=5fc.669;nat=yes>
 Contact: <sip:atpsh-b5-62dfd3a3-cd5ed-1d354@17.17.17.181>

 2023/01/26 09:48:54.729950 17.17.17.211:5060 -> 77.1.1.1:20125
 ACK sip:301234567890@77.1.1.1:20125 SIP/2.0
 Via: SIP/2.0/UDP
 17.17.17.211;branch=z9hG4bK7b5d.365607f0beb6e7e5dcb047c1ad6fcf5f.0
 Via: SIP/2.0/UDP
 17.17.17.181;rport=5060;branch=z9hG4bK7b5d.6ce35eaf9a5805bf47c868cd80c09478.0
 From: <sip:300987654321@sip.mydomain.com>;tag=gK0e80b4b9
 To: "301234567890"<sip:301234567890@sip.mydomain.com>;tag=07ece97c
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 ACK
 Max-Forwards: 68
 Content-Length: 0
 Contact: <sip:atpsh-b5-62dfd3a3-cd5ed-1d354@17.17.17.181>

 2023/01/26 09:48:58.681010 77.1.1.1:2314 -> 17.17.17.211:5060
 SIP/2.0 200 OK
 Via: SIP/2.0/UDP
 17.17.17.211;branch=z9hG4bK7b5d.90b692fac0d1cc8a2ac460a67a02aec9.0
 Via: SIP/2.0/UDP
 17.17.17.181;rport=5060;branch=z9hG4bK7b5d.78276307977b5b2776919ce1f1e76d49.0
 Require: timer
 Contact: <sip:301234567890@77.1.1.1:20125>
 To: "301234567890"<sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 From: <sip:300987654321@17.17.17.211:5060>;tag=gK0e80b4b9
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 INVITE
 Session-Expires: 600;refresher=uas
 Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY,
 REFER, INFO, MESSAGE, UPDATE
 Content-Type: application/sdp
 Supported: replaces, timer
 User-Agent: 3CXPhoneSystem 18.0.6.905 (905)
 Content-Length: 259

 v=0
 o=3cxPS 792019937001472 2393157908037634 IN IP4 77.1.1.1
 s=3cxPS Audio call
 c=IN IP4 77.1.1.1
 t=0 0
 m=audio 9054 RTP/AVP 8 18 101
 a=rtpmap:8 PCMA/8000
 a=rtpmap:18 G729/8000
 a=fmtp:18 annexb=no
 a=rtpmap:101 telephone-event/8000
 a=sendrecv

 2023/01/26 09:48:58.681307 17.17.17.211:5060 -> 17.17.17.181:5060
 SIP/2.0 200 OK
 Via: SIP/2.0/UDP
 17.17.17.181;rport=5060;branch=z9hG4bK7b5d.78276307977b5b2776919ce1f1e76d49.0
 Require: timer
 Contact: <sip:301234567890@77.1.1.1:20125>
 To: "301234567890"<sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 From: <sip:300987654321@17.17.17.211:5060>;tag=gK0e80b4b9
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 INVITE
 Session-Expires: 600;refresher=uas
 Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY,
 REFER, INFO, MESSAGE, UPDATE
 Content-Type: application/sdp
 Supported: replaces, timer
 User-Agent: 3CXPhoneSystem 18.0.6.905 (905)
 Content-Length: 259

 v=0
 o=3cxPS 792019937001472 2393157908037634 IN IP4 77.1.1.1
 s=3cxPS Audio call
 c=IN IP4 77.1.1.1
 t=0 0
 m=audio 9054 RTP/AVP 8 18 101
 a=rtpmap:8 PCMA/8000
 a=rtpmap:18 G729/8000
 a=fmtp:18 annexb=no
 a=rtpmap:101 telephone-event/8000
 a=sendrecv

 2023/01/26 09:48:58.723730 17.17.17.181:5060 -> 17.17.17.211:5060
 ACK sip:301234567890@77.1.1.1:20125 SIP/2.0
 Via: SIP/2.0/UDP
 17.17.17.181;branch=z9hG4bK7b5d.abb70cc570d323c867c112765ec50432.0
 From: <sip:300987654321@17.17.17.211:5060>;tag=gK0e80b4b9
 To: "301234567890"<sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 ACK
 Max-Forwards: 69
 Content-Length: 0
 Route:

<sip:17.17.17.211;lr;ftag=07ece97c;vsf=AAAAAFpUAgECBwAACnAGAW5FUF4ZXUdDUUhEX1hRUC5ldQ--;vst=AAAAAAAAAAAAAAAAAAAAAABCXkYAQkdeVEJDQVtSVBRQRTYw;did=5fc.669;nat=yes>
 Contact: <sip:atpsh-b5-62dfd3a3-cd5ed-1d354@17.17.17.181>

 2023/01/26 09:48:58.731143 17.17.17.211:5060 -> 77.1.1.1:20125
 ACK sip:301234567890@77.1.1.1:20125 SIP/2.0
 Via: SIP/2.0/UDP
 17.17.17.211;branch=z9hG4bK7b5d.12bbae879e42215b50512c04c4fc0214.0
 Via: SIP/2.0/UDP
 17.17.17.181;rport=5060;branch=z9hG4bK7b5d.abb70cc570d323c867c112765ec50432.0
 From: <sip:300987654321@sip.mydomain.com>;tag=gK0e80b4b9
 To: "301234567890"<sip:301234567890@sip.mydomain.com>;tag=07ece97c
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 ACK
 Max-Forwards: 68
 Content-Length: 0
 Contact: <sip:atpsh-b5-62dfd3a3-cd5ed-1d354@17.17.17.181>

 2023/01/26 09:49:02.684483 77.1.1.1:2314 -> 17.17.17.211:5060
 SIP/2.0 200 OK
 Via: SIP/2.0/UDP
 17.17.17.211;branch=z9hG4bK7b5d.90b692fac0d1cc8a2ac460a67a02aec9.0
 Via: SIP/2.0/UDP
 17.17.17.181;rport=5060;branch=z9hG4bK7b5d.78276307977b5b2776919ce1f1e76d49.0
 Require: timer
 Contact: <sip:301234567890@77.1.1.1:20125>
 To: "301234567890"<sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 From: <sip:300987654321@17.17.17.211:5060>;tag=gK0e80b4b9
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 INVITE
 Session-Expires: 600;refresher=uas
 Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY,
 REFER, INFO, MESSAGE, UPDATE
 Content-Type: application/sdp
 Supported: replaces, timer
 User-Agent: 3CXPhoneSystem 18.0.6.905 (905)
 Content-Length: 259

 v=0
 o=3cxPS 792019937001472 2393157908037634 IN IP4 77.1.1.1
 s=3cxPS Audio call
 c=IN IP4 77.1.1.1
 t=0 0
 m=audio 9054 RTP/AVP 8 18 101
 a=rtpmap:8 PCMA/8000
 a=rtpmap:18 G729/8000
 a=fmtp:18 annexb=no
 a=rtpmap:101 telephone-event/8000
 a=sendrecv

 2023/01/26 09:49:02.684985 17.17.17.211:5060 -> 17.17.17.181:5060
 SIP/2.0 200 OK
 Via: SIP/2.0/UDP
 17.17.17.181;rport=5060;branch=z9hG4bK7b5d.78276307977b5b2776919ce1f1e76d49.0
 Require: timer
 Contact: <sip:301234567890@77.1.1.1:20125>
 To: "301234567890"<sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 From: <sip:300987654321@17.17.17.211:5060>;tag=gK0e80b4b9
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 INVITE
 Session-Expires: 600;refresher=uas
 Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY,
 REFER, INFO, MESSAGE, UPDATE
 Content-Type: application/sdp
 Supported: replaces, timer
 User-Agent: 3CXPhoneSystem 18.0.6.905 (905)
 Content-Length: 259

 v=0
 o=3cxPS 792019937001472 2393157908037634 IN IP4 77.1.1.1
 s=3cxPS Audio call
 c=IN IP4 77.1.1.1
 t=0 0
 m=audio 9054 RTP/AVP 8 18 101
 a=rtpmap:8 PCMA/8000
 a=rtpmap:18 G729/8000
 a=fmtp:18 annexb=no
 a=rtpmap:101 telephone-event/8000
 a=sendrecv

 2023/01/26 09:49:02.727999 17.17.17.181:5060 -> 17.17.17.211:5060
 ACK sip:301234567890@77.1.1.1:20125 SIP/2.0
 Via: SIP/2.0/UDP
 17.17.17.181;branch=z9hG4bK7b5d.c2b81601667ffb2a688deba47abd85ef.0
 From: <sip:300987654321@17.17.17.211:5060>;tag=gK0e80b4b9
 To: "301234567890"<sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 ACK
 Max-Forwards: 69
 Content-Length: 0
 Route:

<sip:17.17.17.211;lr;ftag=07ece97c;vsf=AAAAAFpUAgECBwAACnAGAW5FUF4ZXUdDUUhEX1hRUC5ldQ--;vst=AAAAAAAAAAAAAAAAAAAAAABCXkYAQkdeVEJDQVtSVBRQRTYw;did=5fc.669;nat=yes>
 Contact: <sip:atpsh-b5-62dfd3a3-cd5ed-1d354@17.17.17.181>

 2023/01/26 09:49:02.732652 17.17.17.211:5060 -> 77.1.1.1:20125
 ACK sip:301234567890@77.1.1.1:20125 SIP/2.0
 Via: SIP/2.0/UDP
 17.17.17.211;branch=z9hG4bK7b5d.fb4ff819be250670479341711417a554.0
 Via: SIP/2.0/UDP
 17.17.17.181;rport=5060;branch=z9hG4bK7b5d.c2b81601667ffb2a688deba47abd85ef.0
 From: <sip:300987654321@sip.mydomain.com>;tag=gK0e80b4b9
 To: "301234567890"<sip:301234567890@sip.mydomain.com>;tag=07ece97c
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 29227 ACK
 Max-Forwards: 68
 Content-Length: 0
 Contact: <sip:atpsh-b5-62dfd3a3-cd5ed-1d354@17.17.17.181>

 2023/01/26 09:49:03.028200 77.1.1.1:2314 -> 17.17.17.211:5060
 BYE sip:atpsh-b5-62dfd3a3-cd5ed-1d354@17.17.17.181 SIP/2.0
 Via: SIP/2.0/UDP 192.168.80.228:5060
 ;branch=z9hG4bK-524287-1---7c113301b578bb42;rport
 Max-Forwards: 70
 Route:

<sip:17.17.17.211;lr;ftag=07ece97c;vsf=AAAAAFpUAgECBwAACnAGAW5FUF4ZXUdDUUhEX1hRUC5ldQ--;vst=AAAAAAAAAAAAAAAAAAAAAABCXkYAQkdeVEJDQVtSVBRQRTYw;did=5fc.669;nat=yes>
 Contact: <sip:301234567890@77.1.1.1:20125>
 To: <sip:300987654321@17.17.17.211:5060>;tag=gK0e80b4b9
 From: "My, User"<sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 2 BYE
 User-Agent: 3CXPhoneSystem 18.0.6.905 (905)
 Content-Length: 0

 2023/01/26 09:49:03.090194 17.17.17.211:5060 -> 17.17.17.181:5060
 BYE sip:atpsh-b5-62dfd3a3-cd5ed-1d354@17.17.17.181 SIP/2.0
 Via: SIP/2.0/UDP
 17.17.17.211;branch=z9hG4bK92d8.6e9f4e9b390a591c1c54d79389ba087d.0
 Via: SIP/2.0/UDP 192.168.80.228:5060
 ;received=77.1.1.1;branch=z9hG4bK-524287-1---7c113301b578bb42;rport=2314
 Max-Forwards: 69
 Contact: <sip:301234567890@77.1.1.1:20125;alias=77.1.1.1~2314~1>
 To: <sip:300987654321@sip.mydomain.com>;tag=gK0e80b4b9
 From: "My, User"<sip:301234567890@sip.mydomain.com>;tag=07ece97c
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 2 BYE
 User-Agent: 3CXPhoneSystem 18.0.6.905 (905)
 Content-Length: 0

 2023/01/26 09:49:03.261453 17.17.17.181:5060 -> 17.17.17.211:5060
 SIP/2.0 200 OK
 From: "My, User"<sip:301234567890@sip.mydomain.com>;tag=07ece97c
 To: <sip:300987654321@sip.mydomain.com>;tag=gK0e80b4b9
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 2 BYE
 Content-Length: 0
 Via: SIP/2.0/UDP

17.17.17.211;rport=5060;branch=z9hG4bK92d8.6e9f4e9b390a591c1c54d79389ba087d.0,SIP/2.0/UDP
 192.168.80.228:5060
 ;received=77.1.1.1;branch=z9hG4bK-524287-1---7c113301b578bb42;rport=2314
 Contact: <sip:atpsh-b5-62dfd3a3-cd5ed-1d354@17.17.17.181>

 2023/01/26 09:49:03.261941 17.17.17.211:5060 -> 77.1.1.1:2314
 SIP/2.0 200 OK
 From: "My, User"<sip:MyTrunk@77.1.1.1:20125>;tag=07ece97c
 To: <sip:300987654321@17.17.17.211:5060>;tag=gK0e80b4b9
 Call-ID: 1q5nE37RGZ8a8ChI6rqShw..
 CSeq: 2 BYE
 Content-Length: 0
 Via: SIP/2.0/UDP 192.168.80.228:5060
 ;received=77.1.1.1;branch=z9hG4bK-524287-1---7c113301b578bb42;rport=2314
 Contact: <sip:atpsh-b5-62dfd3a3-cd5ed-1d354@17.17.17.181>

 Thank you!
 Regards,
 Angelo

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[SR-Users] Re: ACK on Reverse Invite is send to NATed Internal port instead of public port