BSS is not passing on the ACK (for 200 UK) from UAC to UAS.

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skb007
Posts: 152
Joined: Mon Oct 05, 2015 10:22 pm
Location: USA

BSS is not passing on the ACK (for 200 UK) from UAC to UAS.

Post by skb007 »

1. Brekeke Product Name and Version:BSS Adv Ver

2. Java version:1.8

3. OS type and the version:RHEL7.5

4. UA (phone), gateway or other hardware/software involved: N/A

5. Your problem:

BSS is not passing on the ACK (for 200 UK) from UAC to UAS.
  • UAC is sending the call to BSS.
    BSS uses the alias function and sends the call to UAS.
    UAS answers the call and sends 200 OK to BSS.
    BSS sends the 200 OK to UAC
    UAC sends the ACK for 200 to BSS
    BSS does not send the ACK to UAS. Which triggers the retransmission of 200 from UAS. Call disconnects after few tries.
Matching Pattern
$request = ^INVITE
$addr = ^192.168.2.143$
To = sip:(.+)@
From = sip:(.+)@
$alias.lookup("%1") = (.+)

Deploy Pattern
To = sip:%3@192.168.2.141
From = sip:%2@192.168.2.56
$rtp = false
$b2bua = true
_Contact = <sip:%{$getSIPuser(To)}@%{$ifaddr($addr)}:5060>

Code: Select all

[b]ALIAS DATABASE:[/b]
55558005551212, GROUP1,99998005551212

UAC:192.168.2.143
BSS:192.168.2.56    
UAS:192.168.2.141

[b]Call Flow:[/b]
UAC->BSS->UAS

Leg –A Signaling (UAC-BSS):

Code: Select all

INVITE sip:55558005551212@192.168.2.56:5060 SIP/2.0
Via: SIP/2.0/UDP 192.168.2.143
To: 55558005551212<sip:55558005551212@192.168.2.56:5060>
From: 3333<sip:3333@192.168.2.143:5060>;tag=19279703b6ef0f
Call-ID: SIP21.787.11988751.110@192.168.2.143
Contact: 3333<sip:3333@192.168.2.143:5060>
User-Agent: VOIP/84.11.35
Supported: timer
Session-Expires: 86400
Min-SE: 300
CSeq: 1 INVITE
Max-Forwards: 70
Content-Type: application/sdp
Content-Length: 144

v=0
o=sip 0 0 IN IP4 192.168.2.143
s=SIP_Call
c=IN IP4 192.168.2.218
t=0 0
m=audio 40000 RTP/AVP 8 101
a=rtpmap:101 telephone-event/8000

SIP/2.0 100 Trying
Via: SIP/2.0/UDP 192.168.2.143
From: 3333<sip:3333@192.168.2.143:5060>;tag=19279703b6ef0f
To: 55558005551212<sip:55558005551212@192.168.2.56:5060>
Call-ID: SIP21.787.11988751.110@192.168.2.143
CSeq: 1 INVITE
Server: SNI.SBC.NJ-01 rev.493-3
Content-Length: 0

SIP/2.0 183 Session Progress
Via: SIP/2.0/UDP 192.168.2.143
To: 55558005551212<sip:55558005551212@192.168.2.56:5060>;tag=b9ba5553s
From: 3333<sip:3333@192.168.2.143:5060>;tag=19279703b6ef0f
Call-ID: SIP21.787.11988751.110@192.168.2.143
CSeq: 1 INVITE
User-Agent: VOIP/84.11.35
Contact: <sip:55558005551212@192.168.2.56:5060>
Content-Type: application/sdp
Content-Length: 172

v=0
o=sip 1539862129 1539862129 IN IP4 192.168.2.56
s=SIP_Call
c=IN IP4 192.168.2.117
t=0 0
m=audio 9628 RTP/AVP 8 101
a=sendrecv
a=rtpmap:101 telephone-event/8000

SIP/2.0 200 OK
Via: SIP/2.0/UDP 192.168.2.143
To: 55558005551212<sip:55558005551212@192.168.2.56:5060>;tag=b9ba5553s
From: 3333<sip:3333@192.168.2.143:5060>;tag=19279703b6ef0f
Call-ID: SIP21.787.11988751.110@192.168.2.143
CSeq: 1 INVITE
Session-Expires: 3660; refresher=uas
Require: timer
User-Agent: VOIP/84.11.35
Contact: <sip:55558005551212@192.168.2.56:5060>
Content-Type: application/sdp
Content-Length: 172

v=0
o=sip 1539862129 1539862129 IN IP4 192.168.2.56
s=SIP_Call
c=IN IP4 192.168.2.117
t=0 0
m=audio 9628 RTP/AVP 8 101
a=sendrecv
a=rtpmap:101 telephone-event/8000

ACK sip:55558005551212@192.168.2.56:5060 SIP/2.0
Via: SIP/2.0/UDP 192.168.2.143
To: 55558005551212<sip:55558005551212@192.168.2.56:5060>;tag=b9ba5553s
From: 3333<sip:3333@192.168.2.143:5060>;tag=19279703b6ef0f
Call-ID: SIP21.787.11988751.110@192.168.2.143
CSeq: 1 ACK
Max-Forwards: 70
Content-Length: 0

SIP/2.0 200 OK
Via: SIP/2.0/UDP 192.168.2.143
To: 55558005551212<sip:55558005551212@192.168.2.56:5060>;tag=b9ba5553s
From: 3333<sip:3333@192.168.2.143:5060>;tag=19279703b6ef0f
Call-ID: SIP21.787.11988751.110@192.168.2.143
CSeq: 1 INVITE
Session-Expires: 3660; refresher=uas
Require: timer
User-Agent: VOIP/84.11.35
Contact: <sip:55558005551212@192.168.2.56:5060>
Content-Type: application/sdp
Content-Length: 172

v=0
o=sip 1539862129 1539862129 IN IP4 192.168.2.56
s=SIP_Call
c=IN IP4 192.168.2.117
t=0 0
m=audio 9628 RTP/AVP 8 101
a=sendrecv
a=rtpmap:101 telephone-event/8000

ACK sip:55558005551212@192.168.2.56:5060 SIP/2.0
Via: SIP/2.0/UDP 192.168.2.143
To: 55558005551212<sip:55558005551212@192.168.2.56:5060>;tag=b9ba5553s
From: 3333<sip:3333@192.168.2.143:5060>;tag=19279703b6ef0f
Call-ID: SIP21.787.11988751.110@192.168.2.143
CSeq: 1 ACK
Max-Forwards: 70
Content-Length: 0

SIP/2.0 200 OK
Via: SIP/2.0/UDP 192.168.2.143
To: 55558005551212<sip:55558005551212@192.168.2.56:5060>;tag=b9ba5553s
From: 3333<sip:3333@192.168.2.143:5060>;tag=19279703b6ef0f
Call-ID: SIP21.787.11988751.110@192.168.2.143
CSeq: 1 INVITE
Session-Expires: 3660; refresher=uas
Require: timer
User-Agent: VOIP/84.11.35
Contact: <sip:55558005551212@192.168.2.56:5060>
Content-Type: application/sdp
Content-Length: 172

v=0
o=sip 1539862129 1539862129 IN IP4 192.168.2.56
s=SIP_Call
c=IN IP4 192.168.2.117
t=0 0
m=audio 9628 RTP/AVP 8 101
a=sendrecv
a=rtpmap:101 telephone-event/8000

ACK sip:55558005551212@192.168.2.56:5060 SIP/2.0
Via: SIP/2.0/UDP 192.168.2.143
To: 55558005551212<sip:55558005551212@192.168.2.56:5060>;tag=b9ba5553s
From: 3333<sip:3333@192.168.2.143:5060>;tag=19279703b6ef0f
Call-ID: SIP21.787.11988751.110@192.168.2.143
CSeq: 1 ACK
Max-Forwards: 70
Content-Length: 0

SIP/2.0 200 OK
Via: SIP/2.0/UDP 192.168.2.143
To: 55558005551212<sip:55558005551212@192.168.2.56:5060>;tag=b9ba5553s
From: 3333<sip:3333@192.168.2.143:5060>;tag=19279703b6ef0f
Call-ID: SIP21.787.11988751.110@192.168.2.143
CSeq: 1 INVITE
Session-Expires: 3660; refresher=uas
Require: timer
User-Agent: VOIP/84.11.35
Contact: <sip:55558005551212@192.168.2.56:5060>
Content-Type: application/sdp
Content-Length: 172

v=0
o=sip 1539862129 1539862129 IN IP4 192.168.2.56
s=SIP_Call
c=IN IP4 192.168.2.117
t=0 0
m=audio 9628 RTP/AVP 8 101
a=sendrecv
a=rtpmap:101 telephone-event/8000

ACK sip:55558005551212@192.168.2.56:5060 SIP/2.0
Via: SIP/2.0/UDP 192.168.2.143
To: 55558005551212<sip:55558005551212@192.168.2.56:5060>;tag=b9ba5553s
From: 3333<sip:3333@192.168.2.143:5060>;tag=19279703b6ef0f
Call-ID: SIP21.787.11988751.110@192.168.2.143
CSeq: 1 ACK
Max-Forwards: 70
Content-Length: 0

SIP/2.0 200 OK
Via: SIP/2.0/UDP 192.168.2.143
To: 55558005551212<sip:55558005551212@192.168.2.56:5060>;tag=b9ba5553s
From: 3333<sip:3333@192.168.2.143:5060>;tag=19279703b6ef0f
Call-ID: SIP21.787.11988751.110@192.168.2.143
CSeq: 1 INVITE
Session-Expires: 3660; refresher=uas
Require: timer
User-Agent: VOIP/84.11.35
Contact: <sip:55558005551212@192.168.2.56:5060>
Content-Type: application/sdp
Content-Length: 172

v=0
o=sip 1539862129 1539862129 IN IP4 192.168.2.56
s=SIP_Call
c=IN IP4 192.168.2.117
t=0 0
m=audio 9628 RTP/AVP 8 101
a=sendrecv
a=rtpmap:101 telephone-event/8000

ACK sip:55558005551212@192.168.2.56:5060 SIP/2.0
Via: SIP/2.0/UDP 192.168.2.143
To: 55558005551212<sip:55558005551212@192.168.2.56:5060>;tag=b9ba5553s
From: 3333<sip:3333@192.168.2.143:5060>;tag=19279703b6ef0f
Call-ID: SIP21.787.11988751.110@192.168.2.143
CSeq: 1 ACK
Max-Forwards: 70
Content-Length: 0

SIP/2.0 200 OK
Via: SIP/2.0/UDP 192.168.2.143
To: 55558005551212<sip:55558005551212@192.168.2.56:5060>;tag=b9ba5553s
From: 3333<sip:3333@192.168.2.143:5060>;tag=19279703b6ef0f
Call-ID: SIP21.787.11988751.110@192.168.2.143
CSeq: 1 INVITE
Session-Expires: 3660; refresher=uas
Require: timer
User-Agent: VOIP/84.11.35
Contact: <sip:55558005551212@192.168.2.56:5060>
Content-Type: application/sdp
Content-Length: 172

v=0
o=sip 1539862129 1539862129 IN IP4 192.168.2.56
s=SIP_Call
c=IN IP4 192.168.2.117
t=0 0
m=audio 9628 RTP/AVP 8 101
a=sendrecv
a=rtpmap:101 telephone-event/8000

ACK sip:55558005551212@192.168.2.56:5060 SIP/2.0
Via: SIP/2.0/UDP 192.168.2.143
To: 55558005551212<sip:55558005551212@192.168.2.56:5060>;tag=b9ba5553s
From: 3333<sip:3333@192.168.2.143:5060>;tag=19279703b6ef0f
Call-ID: SIP21.787.11988751.110@192.168.2.143
CSeq: 1 ACK
Max-Forwards: 70
Content-Length: 0

SIP/2.0 200 OK
Via: SIP/2.0/UDP 192.168.2.143
To: 55558005551212<sip:55558005551212@192.168.2.56:5060>;tag=b9ba5553s
From: 3333<sip:3333@192.168.2.143:5060>;tag=19279703b6ef0f
Call-ID: SIP21.787.11988751.110@192.168.2.143
CSeq: 1 INVITE
Session-Expires: 3660; refresher=uas
Require: timer
User-Agent: VOIP/84.11.35
Contact: <sip:55558005551212@192.168.2.56:5060>
Content-Type: application/sdp
Content-Length: 172

v=0
o=sip 1539862129 1539862129 IN IP4 192.168.2.56
s=SIP_Call
c=IN IP4 192.168.2.117
t=0 0
m=audio 9628 RTP/AVP 8 101
a=sendrecv
a=rtpmap:101 telephone-event/8000

ACK sip:55558005551212@192.168.2.56:5060 SIP/2.0
Via: SIP/2.0/UDP 192.168.2.143
To: 55558005551212<sip:55558005551212@192.168.2.56:5060>;tag=b9ba5553s
From: 3333<sip:3333@192.168.2.143:5060>;tag=19279703b6ef0f
Call-ID: SIP21.787.11988751.110@192.168.2.143
CSeq: 1 ACK
Max-Forwards: 70
Content-Length: 0

SIP/2.0 200 OK
Via: SIP/2.0/UDP 192.168.2.143
To: 55558005551212<sip:55558005551212@192.168.2.56:5060>;tag=b9ba5553s
From: 3333<sip:3333@192.168.2.143:5060>;tag=19279703b6ef0f
Call-ID: SIP21.787.11988751.110@192.168.2.143
CSeq: 1 INVITE
Session-Expires: 3660; refresher=uas
Require: timer
User-Agent: VOIP/84.11.35
Contact: <sip:55558005551212@192.168.2.56:5060>
Content-Type: application/sdp
Content-Length: 172

v=0
o=sip 1539862129 1539862129 IN IP4 192.168.2.56
s=SIP_Call
c=IN IP4 192.168.2.117
t=0 0
m=audio 9628 RTP/AVP 8 101
a=sendrecv
a=rtpmap:101 telephone-event/8000

ACK sip:55558005551212@192.168.2.56:5060 SIP/2.0
Via: SIP/2.0/UDP 192.168.2.143
To: 55558005551212<sip:55558005551212@192.168.2.56:5060>;tag=b9ba5553s
From: 3333<sip:3333@192.168.2.143:5060>;tag=19279703b6ef0f
Call-ID: SIP21.787.11988751.110@192.168.2.143
CSeq: 1 ACK
Max-Forwards: 70
Content-Length: 0

SIP/2.0 200 OK
Via: SIP/2.0/UDP 192.168.2.143
To: 55558005551212<sip:55558005551212@192.168.2.56:5060>;tag=b9ba5553s
From: 3333<sip:3333@192.168.2.143:5060>;tag=19279703b6ef0f
Call-ID: SIP21.787.11988751.110@192.168.2.143
CSeq: 1 INVITE
Session-Expires: 3660; refresher=uas
Require: timer
User-Agent: VOIP/84.11.35
Contact: <sip:55558005551212@192.168.2.56:5060>
Content-Type: application/sdp
Content-Length: 172

v=0
o=sip 1539862129 1539862129 IN IP4 192.168.2.56
s=SIP_Call
c=IN IP4 192.168.2.117
t=0 0
m=audio 9628 RTP/AVP 8 101
a=sendrecv
a=rtpmap:101 telephone-event/8000

ACK sip:55558005551212@192.168.2.56:5060 SIP/2.0
Via: SIP/2.0/UDP 192.168.2.143
To: 55558005551212<sip:55558005551212@192.168.2.56:5060>;tag=b9ba5553s
From: 3333<sip:3333@192.168.2.143:5060>;tag=19279703b6ef0f
Call-ID: SIP21.787.11988751.110@192.168.2.143
CSeq: 1 ACK
Max-Forwards: 70
Content-Length: 0

SIP/2.0 200 OK
Via: SIP/2.0/UDP 192.168.2.143
To: 55558005551212<sip:55558005551212@192.168.2.56:5060>;tag=b9ba5553s
From: 3333<sip:3333@192.168.2.143:5060>;tag=19279703b6ef0f
Call-ID: SIP21.787.11988751.110@192.168.2.143
CSeq: 1 INVITE
Session-Expires: 3660; refresher=uas
Require: timer
User-Agent: VOIP/84.11.35
Contact: <sip:55558005551212@192.168.2.56:5060>
Content-Type: application/sdp
Content-Length: 172

v=0
o=sip 1539862129 1539862129 IN IP4 192.168.2.56
s=SIP_Call
c=IN IP4 192.168.2.117
t=0 0
m=audio 9628 RTP/AVP 8 101
a=sendrecv
a=rtpmap:101 telephone-event/8000

ACK sip:55558005551212@192.168.2.56:5060 SIP/2.0
Via: SIP/2.0/UDP 192.168.2.143
To: 55558005551212<sip:55558005551212@192.168.2.56:5060>;tag=b9ba5553s
From: 3333<sip:3333@192.168.2.143:5060>;tag=19279703b6ef0f
Call-ID: SIP21.787.11988751.110@192.168.2.143
CSeq: 1 ACK
Max-Forwards: 70
Content-Length: 0

SIP/2.0 200 OK
Via: SIP/2.0/UDP 192.168.2.143
To: 55558005551212<sip:55558005551212@192.168.2.56:5060>;tag=b9ba5553s
From: 3333<sip:3333@192.168.2.143:5060>;tag=19279703b6ef0f
Call-ID: SIP21.787.11988751.110@192.168.2.143
CSeq: 1 INVITE
Session-Expires: 3660; refresher=uas
Require: timer
User-Agent: VOIP/84.11.35
Contact: <sip:55558005551212@192.168.2.56:5060>
Content-Type: application/sdp
Content-Length: 172

v=0
o=sip 1539862129 1539862129 IN IP4 192.168.2.56
s=SIP_Call
c=IN IP4 192.168.2.117
t=0 0
m=audio 9628 RTP/AVP 8 101
a=sendrecv
a=rtpmap:101 telephone-event/8000

ACK sip:55558005551212@192.168.2.56:5060 SIP/2.0
Via: SIP/2.0/UDP 192.168.2.143
To: 55558005551212<sip:55558005551212@192.168.2.56:5060>;tag=b9ba5553s
From: 3333<sip:3333@192.168.2.143:5060>;tag=19279703b6ef0f
Call-ID: SIP21.787.11988751.110@192.168.2.143
CSeq: 1 ACK
Max-Forwards: 70
Content-Length: 0

BYE sip:3333@192.168.2.143:5060 SIP/2.0
Via: SIP/2.0/UDP 192.168.2.56:5060;branch=z9hG4bK7d898e591cf2-e367da72-1a7ecf
To: "3333" <sip:3333@192.168.2.143:5060>;tag=19279703b6ef0f
From: "55558005551212" <sip:55558005551212@192.168.2.56:5060>;tag=b9ba5553s
Call-ID: SIP21.787.11988751.110@192.168.2.143
CSeq: 1 BYE
User-Agent: VOIP/84.11.35
Content-Length: 0

SIP/2.0 200 OK 
To: "3333" <sip:3333@192.168.2.143:5060>;tag=19279703b6ef0f
From: "55558005551212" <sip:55558005551212@192.168.2.56:5060>;tag=b9ba5553s
Call-ID: SIP21.787.11988751.110@192.168.2.143
CSeq: 1 BYE
Via: SIP/2

Leg-B signalling : BSS->UAS

Code: Select all

INVITE sip:99998005551212@192.168.2.141 SIP/2.0
Via: SIP/2.0/UDP 192.168.2.56:5060;branch=z9hG4bK7d89921ecdd6-83ebef4d-1a7ecf
To: "55558005551212" <sip:99998005551212@192.168.2.141>
From: "3333" <sip:3333@192.168.2.56>;tag=bcefc649cs
Call-ID: df53e545-f59d0d7f-911a0f4e-f28bda8a
Contact: 3333<sip:3333@192.168.2.56:5060>
User-Agent: VOIP/84.11.35
Supported: timer
Session-Expires: 86400
Min-SE: 300
CSeq: 1 INVITE
Max-Forwards: 69
Content-Type: application/sdp
Content-Length: 143

v=0
o=sip 0 0 IN IP4 192.168.2.56
s=SIP_Call
c=IN IP4 192.168.2.218
t=0 0
m=audio 40000 RTP/AVP 8 101
a=rtpmap:101 telephone-event/8000
SIP/2.0 100 Trying 
To: "55558005551212" <sip:99998005551212@192.168.2.141>;tag=5638100e48
From: "3333" <sip:3333@192.168.2.56>;tag=bcefc649cs
Call-ID: df53e545-f59d0d7f-911a0f4e-f28bda8a
CSeq: 1 INVITE
Contact: 99998005551212<sip:99998005551212@192.168.2.141:5060>
Via: SIP/2.0/UDP 192.168.2.56:5060;branch=z9hG4bK7d89921ecdd6-83ebef4d-1a7ecf
User-Agent: VOIP/84.11.35
Content-Length: 0

SIP/2.0 183 Session Progress 
To: "55558005551212" <sip:99998005551212@192.168.2.141>;tag=5638100e48
From: "3333" <sip:3333@192.168.2.56>;tag=bcefc649cs
Call-ID: df53e545-f59d0d7f-911a0f4e-f28bda8a
CSeq: 1 INVITE
Contact: 99998005551212<sip:99998005551212@192.168.2.141:5060>
Via: SIP/2.0/UDP 192.168.2.56:5060;branch=z9hG4bK7d89921ecdd6-83ebef4d-1a7ecf
User-Agent: VOIP/84.11.35
Content-Type: application/sdp
Content-Length: 173

v=0
o=sip 1539862129 1539862129 IN IP4 192.168.2.141
s=SIP_Call
c=IN IP4 192.168.2.117
t=0 0
m=audio 9628 RTP/AVP 8 101
a=sendrecv
a=rtpmap:101 telephone-event/8000

SIP/2.0 200 OK 
To: "55558005551212" <sip:99998005551212@192.168.2.141>;tag=5638100e48
From: "3333" <sip:3333@192.168.2.56>;tag=bcefc649cs
Call-ID: df53e545-f59d0d7f-911a0f4e-f28bda8a
CSeq: 1 INVITE
Contact: 99998005551212<sip:99998005551212@192.168.2.141:5060>
Session-Expires: 3660; refresher=uas
Via: SIP/2.0/UDP 192.168.2.56:5060;branch=z9hG4bK7d89921ecdd6-83ebef4d-1a7ecf
Require: timer
User-Agent: VOIP/84.11.35
Content-Type: application/sdp
Content-Length: 173

v=0
o=sip 1539862129 1539862129 IN IP4 192.168.2.141
s=SIP_Call
c=IN IP4 192.168.2.117
t=0 0
m=audio 9628 RTP/AVP 8 101
a=sendrecv
a=rtpmap:101 telephone-event/8000

SIP/2.0 200 OK 
To: "55558005551212" <sip:99998005551212@192.168.2.141>;tag=5638100e48
From: "3333" <sip:3333@192.168.2.56>;tag=bcefc649cs
Call-ID: df53e545-f59d0d7f-911a0f4e-f28bda8a
CSeq: 1 INVITE
Contact: 99998005551212<sip:99998005551212@192.168.2.141:5060>
Session-Expires: 3660; refresher=uas
Via: SIP/2.0/UDP 192.168.2.56:5060;branch=z9hG4bK7d89921ecdd6-83ebef4d-1a7ecf
Require: timer
User-Agent: VOIP/84.11.35
Content-Type: application/sdp
Content-Length: 173

v=0
o=sip 1539862129 1539862129 IN IP4 192.168.2.141
s=SIP_Call
c=IN IP4 192.168.2.117
t=0 0
m=audio 9628 RTP/AVP 8 101
a=sendrecv
a=rtpmap:101 telephone-event/8000

SIP/2.0 200 OK 
To: "55558005551212" <sip:99998005551212@192.168.2.141>;tag=5638100e48
From: "3333" <sip:3333@192.168.2.56>;tag=bcefc649cs
Call-ID: df53e545-f59d0d7f-911a0f4e-f28bda8a
CSeq: 1 INVITE
Contact: 99998005551212<sip:99998005551212@192.168.2.141:5060>
Session-Expires: 3660; refresher=uas
Via: SIP/2.0/UDP 192.168.2.56:5060;branch=z9hG4bK7d89921ecdd6-83ebef4d-1a7ecf
Require: timer
User-Agent: VOIP/84.11.35
Content-Type: application/sdp
Content-Length: 173

v=0
o=sip 1539862129 1539862129 IN IP4 192.168.2.141
s=SIP_Call
c=IN IP4 192.168.2.117
t=0 0
m=audio 9628 RTP/AVP 8 101
a=sendrecv
a=rtpmap:101 telephone-event/8000

SIP/2.0 200 OK 
To: "55558005551212" <sip:99998005551212@192.168.2.141>;tag=5638100e48
From: "3333" <sip:3333@192.168.2.56>;tag=bcefc649cs
Call-ID: df53e545-f59d0d7f-911a0f4e-f28bda8a
CSeq: 1 INVITE
Contact: 99998005551212<sip:99998005551212@192.168.2.141:5060>
Session-Expires: 3660; refresher=uas
Via: SIP/2.0/UDP 192.168.2.56:5060;branch=z9hG4bK7d89921ecdd6-83ebef4d-1a7ecf
Require: timer
User-Agent: VOIP/84.11.35
Content-Type: application/sdp
Content-Length: 173

v=0
o=sip 1539862129 1539862129 IN IP4 192.168.2.141
s=SIP_Call
c=IN IP4 192.168.2.117
t=0 0
m=audio 9628 RTP/AVP 8 101
a=sendrecv
a=rtpmap:101 telephone-event/8000

SIP/2.0 200 OK 
To: "55558005551212" <sip:99998005551212@192.168.2.141>;tag=5638100e48
From: "3333" <sip:3333@192.168.2.56>;tag=bcefc649cs
Call-ID: df53e545-f59d0d7f-911a0f4e-f28bda8a
CSeq: 1 INVITE
Contact: 99998005551212<sip:99998005551212@192.168.2.141:5060>
Session-Expires: 3660; refresher=uas
Via: SIP/2.0/UDP 192.168.2.56:5060;branch=z9hG4bK7d89921ecdd6-83ebef4d-1a7ecf
Require: timer
User-Agent: VOIP/84.11.35
Content-Type: application/sdp
Content-Length: 173

v=0
o=sip 1539862129 1539862129 IN IP4 192.168.2.141
s=SIP_Call
c=IN IP4 192.168.2.117
t=0 0
m=audio 9628 RTP/AVP 8 101
a=sendrecv
a=rtpmap:101 telephone-event/8000

SIP/2.0 200 OK 
To: "55558005551212" <sip:99998005551212@192.168.2.141>;tag=5638100e48
From: "3333" <sip:3333@192.168.2.56>;tag=bcefc649cs
Call-ID: df53e545-f59d0d7f-911a0f4e-f28bda8a
CSeq: 1 INVITE
Contact: 99998005551212<sip:99998005551212@192.168.2.141:5060>
Session-Expires: 3660; refresher=uas
Via: SIP/2.0/UDP 192.168.2.56:5060;branch=z9hG4bK7d89921ecdd6-83ebef4d-1a7ecf
Require: timer
User-Agent: VOIP/84.11.35
Content-Type: application/sdp
Content-Length: 173

v=0
o=sip 1539862129 1539862129 IN IP4 192.168.2.141
s=SIP_Call
c=IN IP4 192.168.2.117
t=0 0
m=audio 9628 RTP/AVP 8 101
a=sendrecv
a=rtpmap:101 telephone-event/8000

SIP/2.0 200 OK 
To: "55558005551212" <sip:99998005551212@192.168.2.141>;tag=5638100e48
From: "3333" <sip:3333@192.168.2.56>;tag=bcefc649cs
Call-ID: df53e545-f59d0d7f-911a0f4e-f28bda8a
CSeq: 1 INVITE
Contact: 99998005551212<sip:99998005551212@192.168.2.141:5060>
Session-Expires: 3660; refresher=uas
Via: SIP/2.0/UDP 192.168.2.56:5060;branch=z9hG4bK7d89921ecdd6-83ebef4d-1a7ecf
Require: timer
User-Agent: VOIP/84.11.35
Content-Type: application/sdp
Content-Length: 173

v=0
o=sip 1539862129 1539862129 IN IP4 192.168.2.141
s=SIP_Call
c=IN IP4 192.168.2.117
t=0 0
m=audio 9628 RTP/AVP 8 101
a=sendrecv
a=rtpmap:101 telephone-event/8000

SIP/2.0 200 OK 
To: "55558005551212" <sip:99998005551212@192.168.2.141>;tag=5638100e48
From: "3333" <sip:3333@192.168.2.56>;tag=bcefc649cs
Call-ID: df53e545-f59d0d7f-911a0f4e-f28bda8a
CSeq: 1 INVITE
Contact: 99998005551212<sip:99998005551212@192.168.2.141:5060>
Session-Expires: 3660; refresher=uas
Via: SIP/2.0/UDP 192.168.2.56:5060;branch=z9hG4bK7d89921ecdd6-83ebef4d-1a7ecf
Require: timer
User-Agent: VOIP/84.11.35
Content-Type: application/sdp
Content-Length: 173

v=0
o=sip 1539862129 1539862129 IN IP4 192.168.2.141
s=SIP_Call
c=IN IP4 192.168.2.117
t=0 0
m=audio 9628 RTP/AVP 8 101
a=sendrecv
a=rtpmap:101 telephone-event/8000

SIP/2.0 200 OK 
To: "55558005551212" <sip:99998005551212@192.168.2.141>;tag=5638100e48
From: "3333" <sip:3333@192.168.2.56>;tag=bcefc649cs
Call-ID: df53e545-f59d0d7f-911a0f4e-f28bda8a
CSeq: 1 INVITE
Contact: 99998005551212<sip:99998005551212@192.168.2.141:5060>
Session-Expires: 3660; refresher=uas
Via: SIP/2.0/UDP 192.168.2.56:5060;branch=z9hG4bK7d89921ecdd6-83ebef4d-1a7ecf
Require: timer
User-Agent: VOIP/84.11.35
Content-Type: application/sdp
Content-Length: 173

v=0
o=sip 1539862129 1539862129 IN IP4 192.168.2.141
s=SIP_Call
c=IN IP4 192.168.2.117
t=0 0
m=audio 9628 RTP/AVP 8 101
a=sendrecv
a=rtpmap:101 telephone-event/8000

SIP/2.0 200 OK 
To: "55558005551212" <sip:99998005551212@192.168.2.141>;tag=5638100e48
From: "3333" <sip:3333@192.168.2.56>;tag=bcefc649cs
Call-ID: df53e545-f59d0d7f-911a0f4e-f28bda8a
CSeq: 1 INVITE
Contact: 99998005551212<sip:99998005551212@192.168.2.141:5060>
Session-Expires: 3660; refresher=uas
Via: SIP/2.0/UDP 192.168.2.56:5060;branch=z9hG4bK7d89921ecdd6-83ebef4d-1a7ecf
Require: timer
User-Agent: VOIP/84.11.35
Content-Type: application/sdp
Content-Length: 173

v=0
o=sip 1539862129 1539862129 IN IP4 192.168.2.141
s=SIP_Call
c=IN IP4 192.168.2.117
t=0 0
m=audio 9628 RTP/AVP 8 101
a=sendrecv
a=rtpmap:101 telephone-event/8000

SIP/2.0 200 OK 
To: "55558005551212" <sip:99998005551212@192.168.2.141>;tag=5638100e48
From: "3333" <sip:3333@192.168.2.56>;tag=bcefc649cs
Call-ID: df53e545-f59d0d7f-911a0f4e-f28bda8a
CSeq: 1 INVITE
Contact: 99998005551212<sip:99998005551212@192.168.2.141:5060>
Session-Expires: 3660; refresher=uas
Via: SIP/2.0/UDP 192.168.2.56:5060;branch=z9hG4bK7d89921ecdd6-83ebef4d-1a7ecf
Require: timer
User-Agent: VOIP/84.11.35
Content-Type: application/sdp
Content-Length: 173

v=0
o=sip 1539862129 1539862129 IN IP4 192.168.2.141
s=SIP_Call
c=IN IP4 192.168.2.117
t=0 0
m=audio 9628 RTP/AVP 8 101
a=sendrecv
a=rtpmap:101 telephone-event/8000

BYE sip:3333@192.168.2.56:5060 SIP/2.0
Via: SIP/2.0/UDP 192.168.2.141
To: "3333" <sip:3333@192.168.2.56>;tag=bcefc649cs
From: "55558005551212" <sip:99998005551212@192.168.2.141>;tag=5638100e48
Call-ID: df53e545-f59d0d7f-911a0f4e-f28bda8a
CSeq: 1 BYE
User-Agent: VOIP/84.11.35
Content-Length: 0

SIP/2.0 200 OK
Via: SIP/2.0/UDP 192.168.2.141
To: "3333" <sip:3333@192.168.2.56>;tag=bcefc649cs
From: "55558005551212" <sip:99998005551212@192.168.2.141>;tag=5638100e48
Call-ID: df53e545-f59d0d7f-911a0f4e-f28bda8a
CSeq: 1 BYE
User-Agent: VOIP/84.11.35
Content-Length: 0
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