U 2008/01/20 12:16:25.037701 ip1:5060 -> ip2:5060
INVITE sip:number@ip2 SIP/2.0.
Via: SIP/2.0/UDP ip1:5060;branch=z9hG4bK139fcc0b;rport.
From: "+caller_id" <sip:+caller_id@ip3>;tag=as5ba13d03.
To: <sip:number@ip2>.
Contact: <sip:+caller_id@ip1>.
Call-ID: 7a2af493623b544f71806dbb52e7f3e7@ip3.
CSeq: 102 INVITE.
User-Agent: Asterisk PBX.
Max-Forwards: 70.
Date: Sun, 20 Jan 2008 17:16:25 GMT.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.
Supported: replaces.
Content-Type: application/sdp.
Content-Length: 236.
.
v=0.
o=root 2145 2145 IN IP4 ip1.
s=session.
c=IN IP4 ip1.
t=0 0.
m=audio 15964 RTP/AVP 0 101.
a=rtpmap:0 PCMU/8000.
a=rtpmap:101 telephone-event/8000.
a=fmtp:101 0-16.
a=silenceSupp:off - - - -.
a=ptime:20.
a=sendrecv.

U 2008/01/20 12:16:25.216787 ip2:5060 -> ip1:5060
SIP/2.0 100 Trying.
Via: SIP/2.0/UDP ip1:5060;branch=z9hG4bK139fcc0b;rport.
From: "+caller_id" <sip:+caller_id@ip3>;tag=as5ba13d03.
To: <sip:number@ip2>;tag=12DE6CC8-1F8C.
Date: Sun, 20 Jan 2008 17:19:18 GMT.
Call-ID: 7a2af493623b544f71806dbb52e7f3e7@ip3.
Server: Cisco-SIPGateway/IOS-12.x.
CSeq: 102 INVITE.
Allow-Events: telephone-event.
Content-Length: 0.
.

U 2008/01/20 12:16:25.735271 ip2:5060 -> ip1:5060
SIP/2.0 183 Session Progress.
Via: SIP/2.0/UDP ip1:5060;branch=z9hG4bK139fcc0b;rport.
From: "+caller_id" <sip:+caller_id@ip3>;tag=as5ba13d03.
To: <sip:number@ip2>;tag=12DE6CC8-1F8C.
Date: Sun, 20 Jan 2008 17:19:18 GMT.
Call-ID: 7a2af493623b544f71806dbb52e7f3e7@ip3.
Server: Cisco-SIPGateway/IOS-12.x.
CSeq: 102 INVITE.
Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, UPDATE, REFER, SUBSCRIBE, NOTIFY, INFO, REGISTER.
Allow-Events: telephone-event.
Contact: <sip:number@ip2:5060>.
Content-Type: application/sdp.
Content-Disposition: session;handling=required.
Content-Length: 243.
.
v=0.
o=CiscoSystemsSIP-GW-UserAgent 2804 5777 IN IP4 ip2.
s=SIP Call.
c=IN IP4 media_ip.
t=0 0.
m=audio 19034 RTP/AVP 0.
c=IN IP4 media_ip.
a=rtpmap:0 PCMU/8000.
a=ptime:20.
a=direction:passive.
a=silenceSupp:off - - - -.

U 2008/01/20 12:16:36.502885 ip2:5060 -> ip1:5060
SIP/2.0 200 OK.
Via: SIP/2.0/UDP ip1:5060;branch=z9hG4bK139fcc0b;rport.
From: "+caller_id" <sip:+caller_id@ip3>;tag=as5ba13d03.
To: <sip:number@ip2>;tag=12DE6CC8-1F8C.
Date: Sun, 20 Jan 2008 17:19:18 GMT.
Call-ID: 7a2af493623b544f71806dbb52e7f3e7@ip3.
Server: Cisco-SIPGateway/IOS-12.x.
CSeq: 102 INVITE.
Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, UPDATE, REFER, SUBSCRIBE, NOTIFY, INFO, REGISTER.
Allow-Events: telephone-event.
Contact: <sip:number@ip2:5060>.
Supported: replaces.
Content-Type: application/sdp.
Content-Disposition: session;handling=required.
Content-Length: 243.
.
v=0.
o=CiscoSystemsSIP-GW-UserAgent 2804 5777 IN IP4 ip2.
s=SIP Call.
c=IN IP4 media_ip.
t=0 0.
m=audio 19034 RTP/AVP 0.
c=IN IP4 media_ip.
a=rtpmap:0 PCMU/8000.
a=ptime:20.
a=direction:passive.
a=silenceSupp:off - - - -.

U 2008/01/20 12:16:36.503166 ip1:5060 -> ip2:5060
ACK sip:number@ip2:5060 SIP/2.0.
Via: SIP/2.0/UDP ip1:5060;branch=z9hG4bK2eb0fc1d;rport.
From: "+caller_id" <sip:+caller_id@ip3>;tag=as5ba13d03.
To: <sip:number@ip2>;tag=12DE6CC8-1F8C.
Contact: <sip:+caller_id@ip1>.
Call-ID: 7a2af493623b544f71806dbb52e7f3e7@ip3.
CSeq: 102 ACK.
User-Agent: Asterisk PBX.
Max-Forwards: 70.
Content-Length: 0.
.

U 2008/01/20 12:16:36.503519 ip1:5060 -> ip2:5060
INVITE sip:number@ip2:5060 SIP/2.0.
Via: SIP/2.0/UDP ip1:5060;branch=z9hG4bK77e3328c;rport.
From: "+caller_id" <sip:+caller_id@ip3>;tag=as5ba13d03.
To: <sip:number@ip2>;tag=12DE6CC8-1F8C.
Contact: <sip:+caller_id@ip1>.
Call-ID: 7a2af493623b544f71806dbb52e7f3e7@ip3.
CSeq: 103 INVITE.
User-Agent: Asterisk PBX.
Max-Forwards: 70.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.
Supported: replaces.
Content-Type: application/sdp.
Content-Length: 186.
.
v=0.
o=root 2145 2146 IN IP4 209.244.16.205.
s=session.
c=IN IP4 209.244.16.205.
t=0 0.
m=audio 60344 RTP/AVP 0.
a=rtpmap:0 PCMU/8000.
a=silenceSupp:off - - - -.
a=ptime:20.
a=sendrecv.

U 2008/01/20 12:16:36.661973 ip2:5060 -> ip1:5060
SIP/2.0 100 Trying.
Via: SIP/2.0/UDP ip1:5060;branch=z9hG4bK77e3328c;rport.
From: "+caller_id" <sip:+caller_id@ip3>;tag=as5ba13d03.
To: <sip:number@ip2>;tag=12DE6CC8-1F8C.
Date: Sun, 20 Jan 2008 17:19:29 GMT.
Call-ID: 7a2af493623b544f71806dbb52e7f3e7@ip3.
Server: Cisco-SIPGateway/IOS-12.x.
CSeq: 103 INVITE.
Allow-Events: telephone-event.
Content-Length: 0.
.

U 2008/01/20 12:16:36.662692 ip2:5060 -> ip1:5060
SIP/2.0 200 OK.
Via: SIP/2.0/UDP ip1:5060;branch=z9hG4bK77e3328c;rport.
From: "+caller_id" <sip:+caller_id@ip3>;tag=as5ba13d03.
To: <sip:number@ip2>;tag=12DE6CC8-1F8C.
Date: Sun, 20 Jan 2008 17:19:29 GMT.
Call-ID: 7a2af493623b544f71806dbb52e7f3e7@ip3.
Server: Cisco-SIPGateway/IOS-12.x.
CSeq: 103 INVITE.
Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, UPDATE, REFER, SUBSCRIBE, NOTIFY, INFO, REGISTER.
Allow-Events: telephone-event.
Contact: <sip:number@ip2:5060>.
Supported: replaces.
Content-Type: application/sdp.
Content-Length: 204.
.
v=0.
o=CiscoSystemsSIP-GW-UserAgent 2804 5777 IN IP4 ip2.
s=SIP Call.
c=IN IP4 media_ip.
t=0 0.
m=audio 19034 RTP/AVP 0.
c=IN IP4 media_ip.
a=rtpmap:0 PCMU/8000.
a=direction:passive.

U 2008/01/20 12:16:36.662840 ip1:5060 -> ip2:5060
ACK sip:number@ip2:5060 SIP/2.0.
Via: SIP/2.0/UDP ip1:5060;branch=z9hG4bK1e025f33;rport.
From: "+caller_id" <sip:+caller_id@ip3>;tag=as5ba13d03.
To: <sip:number@ip2>;tag=12DE6CC8-1F8C.
Contact: <sip:+caller_id@ip1>.
Call-ID: 7a2af493623b544f71806dbb52e7f3e7@ip3.
CSeq: 103 ACK.
User-Agent: Asterisk PBX.
Max-Forwards: 70.
Content-Length: 0.
.

U 2008/01/20 12:20:35.106228 ip1:5060 -> ip2:5060
INVITE sip:number@ip2:5060 SIP/2.0.
Via: SIP/2.0/UDP ip1:5060;branch=z9hG4bK4c684e78;rport.
From: "+caller_id" <sip:+caller_id@ip3>;tag=as5ba13d03.
To: <sip:number@ip2>;tag=12DE6CC8-1F8C.
Contact: <sip:+caller_id@ip1>.
Call-ID: 7a2af493623b544f71806dbb52e7f3e7@ip3.
CSeq: 104 INVITE.
User-Agent: Asterisk PBX.
Max-Forwards: 70.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.
Supported: replaces.
Content-Type: application/sdp.
Content-Length: 180.
.
v=0.
o=root 2145 2147 IN IP4 ip1.
s=session.
c=IN IP4 ip1.
t=0 0.
m=audio 15964 RTP/AVP 0.
a=rtpmap:0 PCMU/8000.
a=silenceSupp:off - - - -.
a=ptime:20.
a=sendrecv.

U 2008/01/20 12:20:35.154834 ip2:57621 -> ip1:5060
INVITE sip:+caller_id@ip1:5060 SIP/2.0.
Via: SIP/2.0/UDP ip2:5060;branch=z9hG4bKEC1F9F6.
From: <sip:number@ip2>;tag=12DE6CC8-1F8C.
To: "+caller_id" <sip:+caller_id@ip3>;tag=as5ba13d03.
Date: Sun, 20 Jan 2008 17:23:28 GMT.
Call-ID: 7a2af493623b544f71806dbb52e7f3e7@ip3.
Supported: 100rel,timer,resource-priority,replaces.
Min-SE:  1800.
Cisco-Guid: 2863700014-3333558748-3129467979-199099793.
User-Agent: Cisco-SIPGateway/IOS-12.x.
Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, UPDATE, REFER, SUBSCRIBE, NOTIFY, INFO, REGISTER.
CSeq: 101 INVITE.
Max-Forwards: 70.
Timestamp: 1200849808.
Contact: <sip:number@ip2:5060>.
Expires: 180.
Allow-Events: telephone-event.
Content-Type: application/sdp.
Content-Length: 216.
.
v=0.
o=CiscoSystemsSIP-GW-UserAgent 2804 5778 IN IP4 ip2.
s=SIP Call.
c=IN IP4 media_ip.
t=0 0.
m=audio 19034 RTP/AVP 0.
c=IN IP4 media_ip.
a=rtpmap:0 PCMU/8000.
a=direction:passive.
a=sendonly.

U 2008/01/20 12:20:35.154926 ip1:5060 -> ip2:5060
SIP/2.0 491 Request Pending.
Via: SIP/2.0/UDP ip2:5060;branch=z9hG4bKEC1F9F6;received=ip2.
From: <sip:number@ip2>;tag=12DE6CC8-1F8C.
To: "+caller_id" <sip:+caller_id@ip3>;tag=as5ba13d03.
Call-ID: 7a2af493623b544f71806dbb52e7f3e7@ip3.
CSeq: 101 INVITE.
User-Agent: Asterisk PBX.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.
Supported: replaces.
Content-Length: 0.
.

U 2008/01/20 12:20:35.262127 ip2:5060 -> ip1:5060
SIP/2.0 491 Request Pending.
Via: SIP/2.0/UDP ip1:5060;branch=z9hG4bK4c684e78;rport.
From: "+caller_id" <sip:+caller_id@ip3>;tag=as5ba13d03.
To: <sip:number@ip2>;tag=12DE6CC8-1F8C.
Call-ID: 7a2af493623b544f71806dbb52e7f3e7@ip3.
CSeq: 104 INVITE.
Content-Length: 0.
.

U 2008/01/20 12:20:35.262322 ip1:5060 -> ip2:5060
ACK sip:number@ip2:5060 SIP/2.0.
Via: SIP/2.0/UDP ip1:5060;branch=z9hG4bK4c684e78;rport.
From: "+caller_id" <sip:+caller_id@ip3>;tag=as5ba13d03.
To: <sip:number@ip2>;tag=12DE6CC8-1F8C.
Contact: <sip:+caller_id@ip1>.
Call-ID: 7a2af493623b544f71806dbb52e7f3e7@ip3.
CSeq: 104 ACK.
User-Agent: Asterisk PBX.
Max-Forwards: 70.
Content-Length: 0.
.

U 2008/01/20 12:20:35.310539 ip2:5060 -> ip1:5060
ACK sip:+caller_id@ip1:5060 SIP/2.0.
Via: SIP/2.0/UDP ip2:5060;branch=z9hG4bKEC1F9F6.
From: <sip:number@ip2>;tag=12DE6CC8-1F8C.
To: "+caller_id" <sip:+caller_id@ip3>;tag=as5ba13d03.
Date: Sun, 20 Jan 2008 17:23:28 GMT.
Call-ID: 7a2af493623b544f71806dbb52e7f3e7@ip3.
Max-Forwards: 70.
CSeq: 101 ACK.
Allow-Events: telephone-event.
Content-Length: 0.
.

U 2008/01/20 12:20:35.491897 ip2:57621 -> ip1:5060
INVITE sip:+caller_id@ip1:5060 SIP/2.0.
Via: SIP/2.0/UDP ip2:5060;branch=z9hG4bKEC201F.
From: <sip:number@ip2>;tag=12DE6CC8-1F8C.
To: "+caller_id" <sip:+caller_id@ip3>;tag=as5ba13d03.
Date: Sun, 20 Jan 2008 17:23:28 GMT.
Call-ID: 7a2af493623b544f71806dbb52e7f3e7@ip3.
Supported: 100rel,timer,resource-priority,replaces.
Min-SE:  1800.
Cisco-Guid: 2863700014-3333558748-3129467979-199099793.
User-Agent: Cisco-SIPGateway/IOS-12.x.
Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, UPDATE, REFER, SUBSCRIBE, NOTIFY, INFO, REGISTER.
CSeq: 102 INVITE.
Max-Forwards: 70.
Timestamp: 1200849808.
Contact: <sip:number@ip2:5060>.
Expires: 180.
Allow-Events: telephone-event.
Content-Type: application/sdp.
Content-Length: 216.
.
v=0.
o=CiscoSystemsSIP-GW-UserAgent 2804 5779 IN IP4 ip2.
s=SIP Call.
c=IN IP4 media_ip.
t=0 0.
m=audio 19034 RTP/AVP 0.
c=IN IP4 media_ip.
a=rtpmap:0 PCMU/8000.
a=direction:passive.
a=sendonly.

U 2008/01/20 12:20:35.492097 ip1:5060 -> ip2:5060
SIP/2.0 503 Unavailable.
Via: SIP/2.0/UDP ip2:5060;branch=z9hG4bKEC201F;received=ip2.
From: <sip:number@ip2>;tag=12DE6CC8-1F8C.
To: "+caller_id" <sip:+caller_id@ip3>;tag=as5ba13d03.
Call-ID: 7a2af493623b544f71806dbb52e7f3e7@ip3.
CSeq: 102 INVITE.
User-Agent: Asterisk PBX.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.
Supported: replaces.
Contact: <sip:+caller_id@ip1>.
Content-Length: 0.
.

U 2008/01/20 12:20:35.647378 ip2:5060 -> ip1:5060
ACK sip:+caller_id@ip1:5060 SIP/2.0.
Via: SIP/2.0/UDP ip2:5060;branch=z9hG4bKEC201F.
From: <sip:number@ip2>;tag=12DE6CC8-1F8C.
To: "+caller_id" <sip:+caller_id@ip3>;tag=as5ba13d03.
Date: Sun, 20 Jan 2008 17:23:28 GMT.
Call-ID: 7a2af493623b544f71806dbb52e7f3e7@ip3.
Max-Forwards: 70.
CSeq: 102 ACK.
Allow-Events: telephone-event.
Content-Length: 0.
.

U 2008/01/20 12:20:35.647536 ip1:5060 -> ip2:5060
BYE sip:number@ip2:5060 SIP/2.0.
Via: SIP/2.0/UDP ip1:5060;branch=z9hG4bK2a2c18ba;rport.
From: <sip:number@ip2>;tag=12DE6CC8-1F8C.
To: "+caller_id" <sip:+caller_id@ip3>;tag=as5ba13d03.
Call-ID: 7a2af493623b544f71806dbb52e7f3e7@ip3.
CSeq: 105 BYE.
User-Agent: Asterisk PBX.
Max-Forwards: 70.
Content-Length: 0.
.

U 2008/01/20 12:20:35.803616 ip2:57621 -> ip1:5060
SIP/2.0 481 Call Leg/Transaction Does Not Exist.
Via: SIP/2.0/UDP ip1:5060;branch=z9hG4bK2a2c18ba;rport.
From: <sip:number@ip2>;tag=12DE6CC8-1F8C.
To: "+caller_id" <sip:+caller_id@ip3>;tag=as5ba13d03.
Call-ID: 7a2af493623b544f71806dbb52e7f3e7@ip3.
CSeq: 105 BYE.
Content-Length: 0.
.

U 2008/01/20 12:21:05.152937 ip2:57621 -> ip1:5060
BYE sip:+caller_id@ip1:5060 SIP/2.0.
Via: SIP/2.0/UDP ip2:5060;branch=z9hG4bKEC2A4BD.
From: <sip:number@ip2>;tag=12DE6CC8-1F8C.
To: "+caller_id" <sip:+caller_id@ip3>;tag=as5ba13d03.
Date: Sun, 20 Jan 2008 17:23:28 GMT.
Call-ID: 7a2af493623b544f71806dbb52e7f3e7@ip3.
User-Agent: Cisco-SIPGateway/IOS-12.x.
Max-Forwards: 70.
Timestamp: 1200849838.
CSeq: 103 BYE.
Reason: Q.850;cause=102.
Content-Length: 0.
.

U 2008/01/20 12:21:05.153108 ip1:5060 -> ip2:5060
SIP/2.0 200 OK.
Via: SIP/2.0/UDP ip2:5060;branch=z9hG4bKEC2A4BD;received=ip2.
From: <sip:number@ip2>;tag=12DE6CC8-1F8C.
To: "+caller_id" <sip:+caller_id@ip3>;tag=as5ba13d03.
Call-ID: 7a2af493623b544f71806dbb52e7f3e7@ip3.
CSeq: 103 BYE.
User-Agent: Asterisk PBX.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.
Supported: replaces.
Contact: <sip:+caller_id@ip1>.
Content-Length: 0.
.