[Kamailio-Users] attendant call transfer between asterisk gateway and OpenSER problem - sr-users

27 Nov 2008

I have the following scenario :

Pstn Number(1234567) <-----------> Asterisk GW <----------------> Openser |
<-------------->11803

                 |

|

| <--------------> 11801

Firstly extension 11803 will call the pstn number and this works fine
without no problem , after that 11803 will put 1234567 on hold and will call
11801 , then 11803 will transfer 1234567 to 11801 (<---- the problem now
started ), what is happening now is that both 123456 and 11801 will be on
hold with 11803 after the transfer is done

I've traced the full dialog between the three extensions and found an
interesting part , which a NOTIFY message came from asterisk and contains
this sentence : SIP/2.0 481 Call leg/transaction does not exist

The addresses of the devices as follows :

Asterisk Gw : 192.168.200.202

OpenSER : 192.168.200.10

11803 : 192.168.200.222

11801 : 192.168.200.224

The full trace is below :

interface: nge1 (192.168.200.0/255.255.255.0)
filter: (ip) and ( port 5060 )
#
U 192.168.200.222:5060 -> 192.168.200.10:5060
INVITE sip:1234567@192.168.200.10:5060 SIP/2.0.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T1DC2F22B.
Session-Expires: 1800.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T1123280974.
To: <sip:1234567@192.168.200.10:5060...
 .
Call-ID: CALL_ID20_0015E9A0D90F_T647138101(a)192.168.200.222.
CSeq: 1844372869 INVITE.
Contact: <sip:11803@192.168.200.222:5060...
 .
Max-Forwards: 70.
Allow: ACK,BYE,CANCEL,INVITE,NOTIFY,REFER,DO,UPDATE,OPTIONS,SUBSCRIBE,INFO.
Supported: timer,replaces.
User-Agent: DPH-14001.01.
Content-Type: application/sdp.
Content-Length: 242.
.
v=0.
o=11803 273718813 273718813 IN IP4 192.168.200.222.
s=DPH-14001.01.
c=IN IP4 192.168.200.222.
t=0 0.
m=audio 41000 RTP/AVP 0 18 4.
a=rtpmap:0 PCMU/8000/1.
a=rtpmap:18 G729/8000/1.
a=fmtp:18 annexb=no.
a=rtpmap:4 G723/8000/1.
a=sendrecv.
8
#
U 192.168.200.10:5060 -> 192.168.200.222:5060
SIP/2.0 407 Proxy Authentication Required.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T1DC2F22B.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T1123280974.
To: <sip:1234567@192.168.200.10:5060
...
 ;tag=5be75dc65ffa8fb5a76b533c12178918.d1e1.
Call-ID: CALL_ID20_0015E9A0D90F_T647138101(a)192.168.200.222.
CSeq: 1844372869 INVITE.
Proxy-Authenticate: Digest realm="192.168.200.10",
nonce="492cf863ac436e9c37697617b6c5e4491e58df17".
Server: OpenSER (1.3.3-notls (i386/solaris)).
Content-Length: 0.
.

#
U 192.168.200.222:5060 -> 192.168.200.10:5060
ACK sip:1234567@192.168.200.10:5060 SIP/2.0.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T1DC2F22B.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T1123280974.
To: <sip:1234567@192.168.200.10:5060
...
 ;tag=5be75dc65ffa8fb5a76b533c12178918.d1e1.
Call-ID: CALL_ID20_0015E9A0D90F_T647138101(a)192.168.200.222.
CSeq: 1844372869 ACK.
User-Agent: DPH-14001.01.
Contact: <sip:11803@192.168.200.222:5060...
 .
Max-Forwards: 70.
Content-Length: 0.
.

#
U 192.168.200.222:5060 -> 192.168.200.10:5060
INVITE sip:1234567@192.168.200.10:5060 SIP/2.0.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T3F0957F2.
Session-Expires: 1800.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T1123280974.
To: <sip:1234567@192.168.200.10:5060...
 .
Call-ID: CALL_ID20_0015E9A0D90F_T647138101(a)192.168.200.222.
CSeq: 1844372870 INVITE.
Proxy-Authorization: Digest username="11803", realm="192.168.200.10",
nonce="492cf863ac436e9c37697617b6c5e4491e58df17", opaque="",
uri="
sip:1234567@192.168.200.10:5060",
response="fefb838d12f5d716f5e1789a2a36ed93".
Contact: <sip:11803@192.168.200.222:5060...
 .
Max-Forwards: 70.
Allow: ACK,BYE,CANCEL,INVITE,NOTIFY,REFER,DO,UPDATE,OPTIONS,SUBSCRIBE,INFO.
Supported: timer,replaces.
User-Agent: DPH-14001.01.
Content-Type: application/sdp.
Content-Length: 242.
.
v=0.
o=11803 273718813 273718813 IN IP4 192.168.200.222.
s=DPH-14001.01.
c=IN IP4 192.168.200.222.
t=0 0.
m=audio 41000 RTP/AVP 0 18 4.
a=rtpmap:0 PCMU/8000/1.
a=rtpmap:18 G729/8000/1.
a=fmtp:18 annexb=no.
a=rtpmap:4 G723/8000/1.
a=sendrecv.
_
#
U 192.168.200.10:5060 -> 192.168.200.222:5060
SIP/2.0 100 Giving a try.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T3F0957F2.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T1123280974.
To: <sip:1234567@192.168.200.10:5060...
 .
Call-ID: CALL_ID20_0015E9A0D90F_T647138101(a)192.168.200.222.
CSeq: 1844372870 INVITE.
Server: OpenSER (1.3.3-notls (i386/solaris)).
Content-Length: 0.
.

#
U 192.168.200.10:5060 -> 192.168.200.202:5060
INVITE sip:1234567@192.168.200.202:5060 SIP/2.0.
Record-Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T1123280974...
 . Via: SIP/2.0/UDP
192.168.200.10;branch=z9hG4bK596c.3851.0.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T3F0957F2.
Session-Expires: 1800.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T1123280974.
To: <sip:1234567@192.168.200.10:5060...
 .
Call-ID: CALL_ID20_0015E9A0D90F_T647138101(a)192.168.200.222.
CSeq: 1844372870 INVITE.
Proxy-Authorization: Digest username="11803", realm="192.168.200.10",
nonce="492cf863ac436e9c37697617b6c5e4491e58df17", opaque="",
uri="
sip:1234567@192.168.200.10:5060",
response="fefb838d12f5d716f5e1789a2a36ed93".
Contact: <sip:11803@192.168.200.222:5060...
 .
Max-Forwards: 69.
Allow: ACK,BYE,CANCEL,INVITE,NOTIFY,REFER,DO,UPDATE,OPTIONS,SUBSCRIBE,INFO.
Supported: timer,replaces.
User-Agent: DPH-14001.01.
Content-Type: application/sdp.
Content-Length: 242.
.
v=0.
o=11803 273718813 273718813 IN IP4 192.168.200.222.
s=DPH-14001.01.
c=IN IP4 192.168.200.222.
t=0 0.
m=audio 41000 RTP/AVP 0 18 4.
a=rtpmap:0 PCMU/8000/1.
a=rtpmap:18 G729/8000/1.
a=fmtp:18 annexb=no.
a=rtpmap:4 G723/8000/1.
a=sendrecv.

#
U 192.168.200.202:5060 -> 192.168.200.10:5060
SIP/2.0 100 Trying.
Via: SIP/2.0/UDP 192.168.200.10;branch=z9hG4bK596c.3851.0;received=
192.168.200.10.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T3F0957F2.
Record-Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T1123280974...
 . From:
<sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T1123280974.
To: <sip:1234567@192.168.200.10:5060...
 .
Call-ID: CALL_ID20_0015E9A0D90F_T647138101(a)192.168.200.222.
CSeq: 1844372870 INVITE.
User-Agent: Asterisk PBX.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.
Supported: replaces.
Contact: <sip:1234567@192.168.200.202 &lt;sip%3A1234567(a)192.168.200.202&gt;...
 . Content-Length: 0.
.

U 192.168.200.202:5060 -> 192.168.200.10:5060
SIP/2.0 200 OK.
Via: SIP/2.0/UDP 192.168.200.10;branch=z9hG4bK596c.3851.0;received=
192.168.200.10.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T3F0957F2.
Record-Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T1123280974...
 . From:
<sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T1123280974.
To: <sip:1234567@192.168.200.10:5060>;tag=as17b63c65.
Call-ID: CALL_ID20_0015E9A0D90F_T647138101(a)192.168.200.222.
CSeq: 1844372870 INVITE.
User-Agent: Asterisk PBX.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.
Supported: replaces.
Contact: <sip:1234567@192.168.200.202 &lt;sip%3A1234567(a)192.168.200.202&gt;...
 . Content-Type: application/sdp.
Content-Length: 235.
.
v=0.
o=root 2712 2712 IN IP4 192.168.200.202.
s=session.
c=IN IP4 192.168.200.202.
t=0 0.
m=audio 19872 RTP/AVP 0 18.
a=rtpmap:0 PCMU/8000.
a=rtpmap:18 G729/8000.
a=fmtp:18 annexb=no.
a=silenceSupp:off - - - -.
a=ptime:20.
a=sendrecv.

#
U 192.168.200.10:5060 -> 192.168.200.222:5060
SIP/2.0 200 OK.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T3F0957F2.
Record-Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T1123280974...
 . From:
<sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T1123280974.
To: <sip:1234567@192.168.200.10:5060>;tag=as17b63c65.
Call-ID: CALL_ID20_0015E9A0D90F_T647138101(a)192.168.200.222.
CSeq: 1844372870 INVITE.
User-Agent: Asterisk PBX.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.
Supported: replaces.
Contact: <sip:1234567@192.168.200.202 &lt;sip%3A1234567(a)192.168.200.202&gt;...
 . Content-Type: application/sdp.
Content-Length: 235.
.
v=0.
o=root 2712 2712 IN IP4 192.168.200.202.
s=session.
c=IN IP4 192.168.200.202.
t=0 0.
m=audio 19872 RTP/AVP 0 18.
a=rtpmap:0 PCMU/8000.
a=rtpmap:18 G729/8000.
a=fmtp:18 annexb=no.
a=silenceSupp:off - - - -.
a=ptime:20.
a=sendrecv.

#
U 192.168.200.222:5060 -> 192.168.200.10:5060
ACK sip:1234567@192.168.200.202 &lt;sip%3A1234567(a)192.168.200.202&gt; SIP/2.0.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T2A279063.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T1123280974.
To: <sip:1234567@192.168.200.10:5060>;tag=as17b63c65.
Call-ID: CALL_ID20_0015E9A0D90F_T647138101(a)192.168.200.222.
CSeq: 1844372870 ACK.
User-Agent: DPH-14001.01.
Contact: <sip:11803@192.168.200.222:5060...
 .
Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T1123280974...
 . Max-Forwards: 70.
Content-Length: 0.
.

#
U 192.168.200.10:5060 -> 192.168.200.202:5060
ACK sip:1234567@192.168.200.202 &lt;sip%3A1234567(a)192.168.200.202&gt; SIP/2.0.
Record-Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T1123280974...
 . Via: SIP/2.0/UDP
192.168.200.10;branch=z9hG4bK596c.3851.2.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T2A279063.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T1123280974.
To: <sip:1234567@192.168.200.10:5060>;tag=as17b63c65.
Call-ID: CALL_ID20_0015E9A0D90F_T647138101(a)192.168.200.222.
CSeq: 1844372870 ACK.
User-Agent: DPH-14001.01.
Contact: <sip:11803@192.168.200.222:5060...
 .
Max-Forwards: 69.
Content-Length: 0.
.

U 192.168.200.222:5060 -> 192.168.200.10:5060
INVITE sip:1234567@192.168.200.202 &lt;sip%3A1234567(a)192.168.200.202&gt; SIP/2.0.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T6F622AB5.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T1123280974.
To: <sip:1234567@192.168.200.10:5060>;tag=as17b63c65.
Call-ID: CALL_ID20_0015E9A0D90F_T647138101(a)192.168.200.222.
CSeq: 1844372871 INVITE.
Contact: <sip:11803@192.168.200.222:5060...
 .
Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T1123280974...
 . Max-Forwards: 70.
Allow: ACK,BYE,CANCEL,INVITE,NOTIFY,REFER,DO,UPDATE,OPTIONS,SUBSCRIBE,INFO.
Supported: timer,replaces.
User-Agent: DPH-14001.01.
Content-Type: application/sdp.
Content-Length: 234.
.
v=0.
o=11803 273718813 273718814 IN IP4 192.168.200.222.
s=DPH-14001.01.
c=IN IP4 0.0.0.0.
t=0 0.
m=audio 41000 RTP/AVP 0 18 4.
a=rtpmap:0 PCMU/8000/1.
a=rtpmap:18 G729/8000/1.
a=fmtp:18 annexb=no.
a=rtpmap:4 G723/8000/1.
a=sendonly.

#
U 192.168.200.10:5060 -> 192.168.200.222:5060
SIP/2.0 100 Giving a try.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T6F622AB5.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T1123280974.
To: <sip:1234567@192.168.200.10:5060>;tag=as17b63c65.
Call-ID: CALL_ID20_0015E9A0D90F_T647138101(a)192.168.200.222.
CSeq: 1844372871 INVITE.
Server: OpenSER (1.3.3-notls (i386/solaris)).
Content-Length: 0.
.

#
U 192.168.200.10:5060 -> 192.168.200.202:5060
INVITE sip:1234567@192.168.200.202 &lt;sip%3A1234567(a)192.168.200.202&gt; SIP/2.0.
Record-Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T1123280974...
 . Via: SIP/2.0/UDP
192.168.200.10;branch=z9hG4bK696c.5c64.0.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T6F622AB5.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T1123280974.
To: <sip:1234567@192.168.200.10:5060>;tag=as17b63c65.
Call-ID: CALL_ID20_0015E9A0D90F_T647138101(a)192.168.200.222.
CSeq: 1844372871 INVITE.
Contact: <sip:11803@192.168.200.222:5060...
 .
Max-Forwards: 69.
Allow: ACK,BYE,CANCEL,INVITE,NOTIFY,REFER,DO,UPDATE,OPTIONS,SUBSCRIBE,INFO.
Supported: timer,replaces.
User-Agent: DPH-14001.01.
Content-Type: application/sdp.
Content-Length: 234.
.
v=0.
o=11803 273718813 273718814 IN IP4 192.168.200.222.
s=DPH-14001.01.
c=IN IP4 0.0.0.0.
t=0 0.
m=audio 41000 RTP/AVP 0 18 4.
a=rtpmap:0 PCMU/8000/1.
a=rtpmap:18 G729/8000/1.
a=fmtp:18 annexb=no.
a=rtpmap:4 G723/8000/1.
a=sendonly.

#
U 192.168.200.202:5060 -> 192.168.200.10:5060
SIP/2.0 100 Trying.
Via: SIP/2.0/UDP 192.168.200.10;branch=z9hG4bK696c.5c64.0;received=
192.168.200.10.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T6F622AB5.
Record-Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T1123280974...
 . From:
<sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T1123280974.
To: <sip:1234567@192.168.200.10:5060>;tag=as17b63c65.
Call-ID: CALL_ID20_0015E9A0D90F_T647138101(a)192.168.200.222.
CSeq: 1844372871 INVITE.
User-Agent: Asterisk PBX.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.
Supported: replaces.
Contact: <sip:1234567@192.168.200.202 &lt;sip%3A1234567(a)192.168.200.202&gt;...
 . Content-Length: 0.
.

#
U 192.168.200.202:5060 -> 192.168.200.10:5060
SIP/2.0 200 OK.
Via: SIP/2.0/UDP 192.168.200.10;branch=z9hG4bK696c.5c64.0;received=
192.168.200.10.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T6F622AB5.
Record-Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T1123280974...
 . From:
<sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T1123280974.
To: <sip:1234567@192.168.200.10:5060>;tag=as17b63c65.
Call-ID: CALL_ID20_0015E9A0D90F_T647138101(a)192.168.200.222.
CSeq: 1844372871 INVITE.
User-Agent: Asterisk PBX.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.
Supported: replaces.
Contact: <sip:1234567@192.168.200.202 &lt;sip%3A1234567(a)192.168.200.202&gt;...
 . Content-Type: application/sdp.
Content-Length: 235.
.
v=0.
o=root 2712 2713 IN IP4 192.168.200.202.
s=session.
c=IN IP4 192.168.200.202.
t=0 0.
m=audio 19872 RTP/AVP 0 18.
a=rtpmap:0 PCMU/8000.
a=rtpmap:18 G729/8000.
a=fmtp:18 annexb=no.
a=silenceSupp:off - - - -.
a=ptime:20.
a=recvonly.

#
U 192.168.200.10:5060 -> 192.168.200.222:5060
SIP/2.0 200 OK.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T6F622AB5.
Record-Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T1123280974...
 . From:
<sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T1123280974.
To: <sip:1234567@192.168.200.10:5060>;tag=as17b63c65.
Call-ID: CALL_ID20_0015E9A0D90F_T647138101(a)192.168.200.222.
CSeq: 1844372871 INVITE.
User-Agent: Asterisk PBX.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.
Supported: replaces.
Contact: <sip:1234567@192.168.200.202 &lt;sip%3A1234567(a)192.168.200.202&gt;...
 . Content-Type: application/sdp.
Content-Length: 235.
.
v=0.
o=root 2712 2713 IN IP4 192.168.200.202.
s=session.
c=IN IP4 192.168.200.202.
t=0 0.
m=audio 19872 RTP/AVP 0 18.
a=rtpmap:0 PCMU/8000.
a=rtpmap:18 G729/8000.
a=fmtp:18 annexb=no.
a=silenceSupp:off - - - -.
a=ptime:20.
a=recvonly.

#
U 192.168.200.222:5060 -> 192.168.200.10:5060
ACK sip:1234567@192.168.200.202 &lt;sip%3A1234567(a)192.168.200.202&gt; SIP/2.0.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T555ECDF6.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T1123280974.
To: <sip:1234567@192.168.200.10:5060>;tag=as17b63c65.
Call-ID: CALL_ID20_0015E9A0D90F_T647138101(a)192.168.200.222.
CSeq: 1844372871 ACK.
User-Agent: DPH-14001.01.
Contact: <sip:11803@192.168.200.222:5060...
 .
Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T1123280974...
 . Max-Forwards: 70.
Content-Length: 0.
.

#
U 192.168.200.10:5060 -> 192.168.200.202:5060
ACK sip:1234567@192.168.200.202 &lt;sip%3A1234567(a)192.168.200.202&gt; SIP/2.0.
Record-Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T1123280974...
 . Via: SIP/2.0/UDP
192.168.200.10;branch=z9hG4bK696c.5c64.2.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T555ECDF6.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T1123280974.
To: <sip:1234567@192.168.200.10:5060>;tag=as17b63c65.
Call-ID: CALL_ID20_0015E9A0D90F_T647138101(a)192.168.200.222.
CSeq: 1844372871 ACK.
User-Agent: DPH-14001.01.
Contact: <sip:11803@192.168.200.222:5060...
 .
Max-Forwards: 69.
Content-Length: 0.
.

#

U 192.168.200.222:5060 -> 192.168.200.10:5060
INVITE sip:11801@192.168.200.10:5060 SIP/2.0.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T584FCDF0.
Session-Expires: 1800.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T408052446.
To: <sip:11801@192.168.200.10:5060...
 .
Call-ID: CALL_ID21_0015E9A0D90F_T1842345680(a)192.168.200.222.
CSeq: 612491577 INVITE.
Contact: <sip:11803@192.168.200.222:5060...
 .
Max-Forwards: 70.
Allow: ACK,BYE,CANCEL,INVITE,NOTIFY,REFER,DO,UPDATE,OPTIONS,SUBSCRIBE,INFO.
Supported: timer,replaces.
User-Agent: DPH-14001.01.
Content-Type: application/sdp.
Content-Length: 242.
.
v=0.
o=11803 273772573 273772573 IN IP4 192.168.200.222.
s=DPH-14001.01.
c=IN IP4 192.168.200.222.
t=0 0.
m=audio 41000 RTP/AVP 0 18 4.
a=rtpmap:0 PCMU/8000/1.
a=rtpmap:18 G729/8000/1.
a=fmtp:18 annexb=no.
a=rtpmap:4 G723/8000/1.
a=sendrecv.

#
U 192.168.200.10:5060 -> 192.168.200.222:5060
SIP/2.0 407 Proxy Authentication Required.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T584FCDF0.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T408052446.
To: <sip:11801@192.168.200.10:5060
...
 ;tag=5be75dc65ffa8fb5a76b533c12178918.146b.
Call-ID: CALL_ID21_0015E9A0D90F_T1842345680(a)192.168.200.222.
CSeq: 612491577 INVITE.
Proxy-Authenticate: Digest realm="192.168.200.10",
nonce="492cf87251a238af089dfab6b5d7f8c274907ba8".
Server: OpenSER (1.3.3-notls (i386/solaris)).
Content-Length: 0.
.

#
U 192.168.200.222:5060 -> 192.168.200.10:5060
ACK sip:11801@192.168.200.10:5060 SIP/2.0.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T584FCDF0.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T408052446.
To: <sip:11801@192.168.200.10:5060
...
 ;tag=5be75dc65ffa8fb5a76b533c12178918.146b.
Call-ID: CALL_ID21_0015E9A0D90F_T1842345680(a)192.168.200.222.
CSeq: 612491577 ACK.
User-Agent: DPH-14001.01.
Contact: <sip:11803@192.168.200.222:5060...
 .
Max-Forwards: 70.
Content-Length: 0.
.
2
#
U 192.168.200.222:5060 -> 192.168.200.10:5060
INVITE sip:11801@192.168.200.10:5060 SIP/2.0.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T51E2E9FC.
Session-Expires: 1800.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T408052446.
To: <sip:11801@192.168.200.10:5060...
 .
Call-ID: CALL_ID21_0015E9A0D90F_T1842345680(a)192.168.200.222.
CSeq: 612491578 INVITE.
Proxy-Authorization: Digest username="11803", realm="192.168.200.10",
nonce="492cf87251a238af089dfab6b5d7f8c274907ba8", opaque="",
uri="
sip:11801@192.168.200.10:5060",
response="c182454ce412ce07dd2a0d13c416bf58".
Contact: <sip:11803@192.168.200.222:5060...
 .
Max-Forwards: 70.
Allow: ACK,BYE,CANCEL,INVITE,NOTIFY,REFER,DO,UPDATE,OPTIONS,SUBSCRIBE,INFO.
Supported: timer,replaces.
User-Agent: DPH-14001.01.
Content-Type: application/sdp.
Content-Length: 242.
.
v=0.
o=11803 273772573 273772573 IN IP4 192.168.200.222.
s=DPH-14001.01.
c=IN IP4 192.168.200.222.
t=0 0.
m=audio 41000 RTP/AVP 0 18 4.
a=rtpmap:0 PCMU/8000/1.
a=rtpmap:18 G729/8000/1.
a=fmtp:18 annexb=no.
a=rtpmap:4 G723/8000/1.
a=sendrecv.
b
#
U 192.168.200.10:5060 -> 192.168.200.222:5060
SIP/2.0 100 Giving a try.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T51E2E9FC.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T408052446.
To: <sip:11801@192.168.200.10:5060...
 .
Call-ID: CALL_ID21_0015E9A0D90F_T1842345680(a)192.168.200.222.
CSeq: 612491578 INVITE.
Server: OpenSER (1.3.3-notls (i386/solaris)).
Content-Length: 0.
.

#
U 192.168.200.10:5060 -> 192.168.200.224:5060
INVITE sip:11801@192.168.200.224:5060 SIP/2.0.
Record-Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T408052446...
 . Via: SIP/2.0/UDP
192.168.200.10;branch=z9hG4bKa2ce.3cf7.0.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T51E2E9FC.
Session-Expires: 1800.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T408052446.
To: <sip:11801@192.168.200.10:5060...
 .
Call-ID: CALL_ID21_0015E9A0D90F_T1842345680(a)192.168.200.222.
CSeq: 612491578 INVITE.
Contact: <sip:11803@192.168.200.222:5060...
 .
Max-Forwards: 69.
Allow: ACK,BYE,CANCEL,INVITE,NOTIFY,REFER,DO,UPDATE,OPTIONS,SUBSCRIBE,INFO.
Supported: timer,replaces.
User-Agent: DPH-14001.01.
Content-Type: application/sdp.
Content-Length: 242.
.
v=0.
o=11803 273772573 273772573 IN IP4 192.168.200.222.
s=DPH-14001.01.
c=IN IP4 192.168.200.222.
t=0 0.
m=audio 41000 RTP/AVP 0 18 4.
a=rtpmap:0 PCMU/8000/1.
a=rtpmap:18 G729/8000/1.
a=fmtp:18 annexb=no.
a=rtpmap:4 G723/8000/1.
a=sendrecv.

#
U 192.168.200.224:5060 -> 192.168.200.10:5060
SIP/2.0 100 Trying.
Via: SIP/2.0/UDP 192.168.200.10;branch=z9hG4bKa2ce.3cf7.0.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T51E2E9FC.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T408052446.
To: <sip:11801@192.168.200.10:5060...
 .
Call-ID: CALL_ID21_0015E9A0D90F_T1842345680(a)192.168.200.222.
Contact: <sip:11801@192.168.200.224:5060...
 .
CSeq: 612491578 INVITE.
User-Agent: DPH-14001.01.
Allow: ACK,BYE,CANCEL,INVITE,NOTIFY,REFER,DO,UPDATE,OPTIONS,SUBSCRIBE,INFO.
Content-Length: 0.
.

#
U 192.168.200.224:5060 -> 192.168.200.10:5060
SIP/2.0 180 Ringing.
Via: SIP/2.0/UDP 192.168.200.10;branch=z9hG4bKa2ce.3cf7.0.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T51E2E9FC.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T408052446.
To: <sip:11801@192.168.200.10:5060>;tag=0015E970817D_T1147221029.
Call-ID: CALL_ID21_0015E9A0D90F_T1842345680(a)192.168.200.222.
Contact: <sip:11801@192.168.200.224:5060...
 .
Record-Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T408052446...
 . CSeq: 612491578 INVITE.
User-Agent: DPH-14001.01.
Allow: ACK,BYE,CANCEL,INVITE,NOTIFY,REFER,DO,UPDATE,OPTIONS,SUBSCRIBE,INFO.
Content-Length: 0.
.
0
#
U 192.168.200.10:5060 -> 192.168.200.222:5060
SIP/2.0 180 Ringing.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T51E2E9FC.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T408052446.
To: <sip:11801@192.168.200.10:5060>;tag=0015E970817D_T1147221029.
Call-ID: CALL_ID21_0015E9A0D90F_T1842345680(a)192.168.200.222.
Contact: <sip:11801@192.168.200.224:5060...
 .
Record-Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T408052446...
 . CSeq: 612491578 INVITE.
User-Agent: DPH-14001.01.
Allow: ACK,BYE,CANCEL,INVITE,NOTIFY,REFER,DO,UPDATE,OPTIONS,SUBSCRIBE,INFO.
Content-Length: 0.
.

#

U 192.168.200.224:5060 -> 192.168.200.10:5060
SIP/2.0 200 OK.
Via: SIP/2.0/UDP 192.168.200.10;branch=z9hG4bKa2ce.3cf7.0.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T51E2E9FC.
Require: timer.
Session-Expires: 1800;refresher=uac.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T408052446.
To: <sip:11801@192.168.200.10:5060>;tag=0015E970817D_T1147221029.
Call-ID: CALL_ID21_0015E9A0D90F_T1842345680(a)192.168.200.222.
Contact: <sip:11801@192.168.200.224:5060...
 .
Record-Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T408052446...
 . CSeq: 612491578 INVITE.
Allow: ACK,BYE,CANCEL,INVITE,NOTIFY,REFER,DO,UPDATE,OPTIONS,SUBSCRIBE,INFO.
Supported: timer,replaces.
Content-Type: application/sdp.
Content-Length: 167.
.
v=0.
o=11801 276818065 276818065 IN IP4 192.168.200.224.
s=DPH-14001.01.
c=IN IP4 192.168.200.224.
t=0 0.
m=audio 41000 RTP/AVP 0.
a=rtpmap:0 PCMU/8000/1.
a=sendrecv.

#
U 192.168.200.10:5060 -> 192.168.200.222:5060
SIP/2.0 200 OK.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T51E2E9FC.
Require: timer.
Session-Expires: 1800;refresher=uac.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T408052446.
To: <sip:11801@192.168.200.10:5060>;tag=0015E970817D_T1147221029.
Call-ID: CALL_ID21_0015E9A0D90F_T1842345680(a)192.168.200.222.
Contact: <sip:11801@192.168.200.224:5060...
 .
Record-Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T408052446...
 . CSeq: 612491578 INVITE.
Allow: ACK,BYE,CANCEL,INVITE,NOTIFY,REFER,DO,UPDATE,OPTIONS,SUBSCRIBE,INFO.
Supported: timer,replaces.
Content-Type: application/sdp.
Content-Length: 167.
.
v=0.
o=11801 276818065 276818065 IN IP4 192.168.200.224.
s=DPH-14001.01.
c=IN IP4 192.168.200.224.
t=0 0.
m=audio 41000 RTP/AVP 0.
a=rtpmap:0 PCMU/8000/1.
a=sendrecv.

#
U 192.168.200.222:5060 -> 192.168.200.10:5060
ACK sip:11801@192.168.200.224:5060 SIP/2.0.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T3C593173.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T408052446.
To: <sip:11801@192.168.200.10:5060>;tag=0015E970817D_T1147221029.
Call-ID: CALL_ID21_0015E9A0D90F_T1842345680(a)192.168.200.222.
CSeq: 612491578 ACK.
User-Agent: DPH-14001.01.
Contact: <sip:11803@192.168.200.222:5060...
 .
Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T408052446...
 . Max-Forwards: 70.
Content-Length: 0.
.
0
#
U 192.168.200.10:5060 -> 192.168.200.224:5060
ACK sip:11801@192.168.200.224:5060 SIP/2.0.
Record-Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T408052446...
 . Via: SIP/2.0/UDP
192.168.200.10;branch=z9hG4bKa2ce.3cf7.2.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T3C593173.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T408052446.
To: <sip:11801@192.168.200.10:5060>;tag=0015E970817D_T1147221029.
Call-ID: CALL_ID21_0015E9A0D90F_T1842345680(a)192.168.200.222.
CSeq: 612491578 ACK.
User-Agent: DPH-14001.01.
Contact: <sip:11803@192.168.200.222:5060...
 .
Max-Forwards: 69.
Content-Length: 0.
.

#
U 192.168.200.222:5060 -> 192.168.200.10:5060
INVITE sip:11801@192.168.200.224:5060 SIP/2.0.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T1280D8E9.
Session-Expires: 1800;refresher=uac.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T408052446.
To: <sip:11801@192.168.200.10:5060>;tag=0015E970817D_T1147221029.
Call-ID: CALL_ID21_0015E9A0D90F_T1842345680(a)192.168.200.222.
CSeq: 612491579 INVITE.
Contact: <sip:11803@192.168.200.222:5060...
 .
Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T408052446...
 . Max-Forwards: 70.
Allow: ACK,BYE,CANCEL,INVITE,NOTIFY,REFER,DO,UPDATE,OPTIONS,SUBSCRIBE,INFO.
Supported: timer,replaces.
User-Agent: DPH-14001.01.
Content-Type: application/sdp.
Content-Length: 234.
.
v=0.
o=11803 273772573 273772574 IN IP4 192.168.200.222.
s=DPH-14001.01.
c=IN IP4 0.0.0.0.
t=0 0.
m=audio 41000 RTP/AVP 0 18 4.
a=rtpmap:0 PCMU/8000/1.
a=rtpmap:18 G729/8000/1.
a=fmtp:18 annexb=no.
a=rtpmap:4 G723/8000/1.
a=sendonly.

#
U 192.168.200.10:5060 -> 192.168.200.222:5060
SIP/2.0 100 Giving a try.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T1280D8E9.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T408052446.
To: <sip:11801@192.168.200.10:5060>;tag=0015E970817D_T1147221029.
Call-ID: CALL_ID21_0015E9A0D90F_T1842345680(a)192.168.200.222.
CSeq: 612491579 INVITE.
Server: OpenSER (1.3.3-notls (i386/solaris)).
Content-Length: 0.
.

#
U 192.168.200.10:5060 -> 192.168.200.224:5060
INVITE sip:11801@192.168.200.224:5060 SIP/2.0.
Record-Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T408052446...
 . Via: SIP/2.0/UDP
192.168.200.10;branch=z9hG4bK92ce.5361.0.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T1280D8E9.
Session-Expires: 1800;refresher=uac.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T408052446.
To: <sip:11801@192.168.200.10:5060>;tag=0015E970817D_T1147221029.
Call-ID: CALL_ID21_0015E9A0D90F_T1842345680(a)192.168.200.222.
CSeq: 612491579 INVITE.
Contact: <sip:11803@192.168.200.222:5060...
 .
Max-Forwards: 69.
Allow: ACK,BYE,CANCEL,INVITE,NOTIFY,REFER,DO,UPDATE,OPTIONS,SUBSCRIBE,INFO.
Supported: timer,replaces.
User-Agent: DPH-14001.01.
Content-Type: application/sdp.
Content-Length: 234.
.
v=0.
o=11803 273772573 273772574 IN IP4 192.168.200.222.
s=DPH-14001.01.
c=IN IP4 0.0.0.0.
t=0 0.
m=audio 41000 RTP/AVP 0 18 4.
a=rtpmap:0 PCMU/8000/1.
a=rtpmap:18 G729/8000/1.
a=fmtp:18 annexb=no.
a=rtpmap:4 G723/8000/1.
a=sendonly.

#
U 192.168.200.224:5060 -> 192.168.200.10:5060
SIP/2.0 200 OK.
Via: SIP/2.0/UDP 192.168.200.10;branch=z9hG4bK92ce.5361.0.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T1280D8E9.
Require: timer.
Session-Expires: 1800;refresher=uac.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T408052446.
To: <sip:11801@192.168.200.10:5060>;tag=0015E970817D_T1147221029.
Call-ID: CALL_ID21_0015E9A0D90F_T1842345680(a)192.168.200.222.
Contact: <sip:11801@192.168.200.224:5060...
 .
Record-Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T408052446...
 . CSeq: 612491579 INVITE.
Allow: ACK,BYE,CANCEL,INVITE,NOTIFY,REFER,DO,UPDATE,OPTIONS,SUBSCRIBE,INFO.
Supported: timer,replaces.
Content-Type: application/sdp.
Content-Length: 167.
.
v=0.
o=11801 276818065 276818065 IN IP4 192.168.200.224.
s=DPH-14001.01.
c=IN IP4 192.168.200.224.
t=0 0.
m=audio 41000 RTP/AVP 0.
a=rtpmap:0 PCMU/8000/1.
a=recvonly.

#
U 192.168.200.10:5060 -> 192.168.200.222:5060
SIP/2.0 200 OK.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T1280D8E9.
Require: timer.
Session-Expires: 1800;refresher=uac.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T408052446.
To: <sip:11801@192.168.200.10:5060>;tag=0015E970817D_T1147221029.
Call-ID: CALL_ID21_0015E9A0D90F_T1842345680(a)192.168.200.222.
Contact: <sip:11801@192.168.200.224:5060...
 .
Record-Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T408052446...
 . CSeq: 612491579 INVITE.
Allow: ACK,BYE,CANCEL,INVITE,NOTIFY,REFER,DO,UPDATE,OPTIONS,SUBSCRIBE,INFO.
Supported: timer,replaces.
Content-Type: application/sdp.
Content-Length: 167.
.
v=0.
o=11801 276818065 276818065 IN IP4 192.168.200.224.
s=DPH-14001.01.
c=IN IP4 192.168.200.224.
t=0 0.
m=audio 41000 RTP/AVP 0.
a=rtpmap:0 PCMU/8000/1.
a=recvonly.

#
U 192.168.200.222:5060 -> 192.168.200.10:5060
ACK sip:11801@192.168.200.224:5060 SIP/2.0.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T72B9563C.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T408052446.
To: <sip:11801@192.168.200.10:5060>;tag=0015E970817D_T1147221029.
Call-ID: CALL_ID21_0015E9A0D90F_T1842345680(a)192.168.200.222.
CSeq: 612491579 ACK.
User-Agent: DPH-14001.01.
Contact: <sip:11803@192.168.200.222:5060...
 .
Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T408052446...
 . Max-Forwards: 70.
Content-Length: 0.
.
1
#
U 192.168.200.10:5060 -> 192.168.200.224:5060
ACK sip:11801@192.168.200.224:5060 SIP/2.0.
Record-Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T408052446...
 . Via: SIP/2.0/UDP
192.168.200.10;branch=z9hG4bK92ce.5361.2.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T72B9563C.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T408052446.
To: <sip:11801@192.168.200.10:5060>;tag=0015E970817D_T1147221029.
Call-ID: CALL_ID21_0015E9A0D90F_T1842345680(a)192.168.200.222.
CSeq: 612491579 ACK.
User-Agent: DPH-14001.01.
Contact: <sip:11803@192.168.200.222:5060...
 .
Max-Forwards: 69.
Content-Length: 0.
.

#
U 192.168.200.222:5060 -> 192.168.200.10:5060
REFER sip:1234567@192.168.200.202 &lt;sip%3A1234567(a)192.168.200.202&gt; SIP/2.0.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T218F1384.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T1123280974.
To: <sip:1234567@192.168.200.10:5060>;tag=as17b63c65.
Call-ID: CALL_ID20_0015E9A0D90F_T647138101(a)192.168.200.222.
CSeq: 1844372872 REFER.
Refer-To: <
sip:11801@192.168.200.10:5060?Replaces=CALL_ID21_0015E9A0D90F_T1842345680%40192.168.200.222%3Bto-tag%3D0015E970817D_T1147221029%3Bfrom-tag%3D0015E9A0D90F_T408052446
...
 . Referred-by: <sip:11803@192.168.200.10
&lt;sip%3A11803(a)192.168.200.10&gt;...
 . Route:
<sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T1123280974...
 .
Contact: <sip:11803@192.168.200.222:5060...
 .
Max-Forwards: 70.
Content-Length: 0.
.
P
#
U 192.168.200.10:5060 -> 192.168.200.202:5060
REFER sip:1234567@192.168.200.202 &lt;sip%3A1234567(a)192.168.200.202&gt; SIP/2.0.
Record-Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T1123280974...
 . Via: SIP/2.0/UDP
192.168.200.10;branch=z9hG4bK396c.8f11.0.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T218F1384.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T1123280974.
To: <sip:1234567@192.168.200.10:5060>;tag=as17b63c65.
Call-ID: CALL_ID20_0015E9A0D90F_T647138101(a)192.168.200.222.
CSeq: 1844372872 REFER.
Refer-To: <
sip:11801@192.168.200.10:5060?Replaces=CALL_ID21_0015E9A0D90F_T1842345680%40192.168.200.222%3Bto-tag%3D0015E970817D_T1147221029%3Bfrom-tag%3D0015E9A0D90F_T408052446
...
 . Referred-by: <sip:11803@192.168.200.10
&lt;sip%3A11803(a)192.168.200.10&gt;...
 . Contact:
<sip:11803@192.168.200.222:5060...
 . Max-Forwards: 69.
Content-Length: 0.
.

#
U 192.168.200.202:5060 -> 192.168.200.10:5060
SIP/2.0 202 Accepted.
Via: SIP/2.0/UDP 192.168.200.10;branch=z9hG4bK396c.8f11.0;received=
192.168.200.10.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T218F1384.
Record-Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T1123280974...
 . From:
<sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T1123280974.
To: <sip:1234567@192.168.200.10:5060>;tag=as17b63c65.
Call-ID: CALL_ID20_0015E9A0D90F_T647138101(a)192.168.200.222.
CSeq: 1844372872 REFER.
User-Agent: Asterisk PBX.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.
Supported: replaces.
Contact: <sip:1234567@192.168.200.202 &lt;sip%3A1234567(a)192.168.200.202&gt;...
 . Content-Length: 0.
.

#
U 192.168.200.10:5060 -> 192.168.200.222:5060
SIP/2.0 202 Accepted.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T218F1384.
Record-Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T1123280974...
 . From:
<sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T1123280974.
To: <sip:1234567@192.168.200.10:5060>;tag=as17b63c65.
Call-ID: CALL_ID20_0015E9A0D90F_T647138101(a)192.168.200.222.
CSeq: 1844372872 REFER.
User-Agent: Asterisk PBX.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.
Supported: replaces.
Contact: <sip:1234567@192.168.200.202 &lt;sip%3A1234567(a)192.168.200.202&gt;...
 . Content-Length: 0.
.

#
U 192.168.200.202:5060 -> 192.168.200.10:5060
NOTIFY sip:11803@192.168.200.222:5060 SIP/2.0.
Via: SIP/2.0/UDP 192.168.200.202:5060;branch=z9hG4bK511c6a05;rport.
Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T1123280974...
 . From:
<sip:1234567@192.168.200.10:5060>;tag=as17b63c65.
To: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T1123280974.
Contact: <sip:1234567@192.168.200.202 &lt;sip%3A1234567(a)192.168.200.202&gt;...
 . Call-ID:
CALL_ID20_0015E9A0D90F_T647138101(a)192.168.200.222.
CSeq: 102 NOTIFY.
User-Agent: Asterisk PBX.
Max-Forwards: 70.
Event: refer;id=1844372872.
Subscription-state: terminated;reason=noresource.
Content-Type: message/sipfrag;version=2.0.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.
Supported: replaces.
Content-Length: 49.
.
SIP/2.0 481 Call leg/transaction does not exist.

#
U 192.168.200.10:5060 -> 192.168.200.222:5060
NOTIFY sip:11803@192.168.200.222:5060 SIP/2.0.
Record-Route: <sip:192.168.200.10;lr=on;ftag=as17b63c65...
 .
Via: SIP/2.0/UDP 192.168.200.10;branch=z9hG4bK3dbb.fc91.0.
Via: SIP/2.0/UDP 192.168.200.202:5060;branch=z9hG4bK511c6a05;rport=5060.
From: <sip:1234567@192.168.200.10:5060>;tag=as17b63c65.
To: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T1123280974.
Contact: <sip:1234567@192.168.200.202 &lt;sip%3A1234567(a)192.168.200.202&gt;...
 . Call-ID:
CALL_ID20_0015E9A0D90F_T647138101(a)192.168.200.222.
CSeq: 102 NOTIFY.
User-Agent: Asterisk PBX.
Max-Forwards: 69.
Event: refer;id=1844372872.
Subscription-state: terminated;reason=noresource.
Content-Type: message/sipfrag;version=2.0.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.
Supported: replaces.
Content-Length: 49.
.
SIP/2.0 481 Call leg/transaction does not exist.

#
U 192.168.200.222:5060 -> 192.168.200.10:5060
SIP/2.0 200 OK.
Via: SIP/2.0/UDP 192.168.200.10;branch=z9hG4bK3dbb.fc91.0.
Via: SIP/2.0/UDP 192.168.200.202:5060;branch=z9hG4bK511c6a05;rport=5060.
From: <sip:1234567@192.168.200.10:5060>;tag=as17b63c65.
To: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T1123280974.
Call-ID: CALL_ID20_0015E9A0D90F_T647138101(a)192.168.200.222.
CSeq: 102 NOTIFY.
User-Agent: DPH-14001.01.
Content-Length: 0.
.
6
#
U 192.168.200.10:5060 -> 192.168.200.202:5060
SIP/2.0 200 OK.
Via: SIP/2.0/UDP 192.168.200.202:5060;branch=z9hG4bK511c6a05;rport=5060.
From: <sip:1234567@192.168.200.10:5060>;tag=as17b63c65.
To: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T1123280974.
Call-ID: CALL_ID20_0015E9A0D90F_T647138101(a)192.168.200.222.
CSeq: 102 NOTIFY.
User-Agent: DPH-14001.01.
Content-Length: 0.
.

#
U 192.168.200.201:26114 -> 192.168.200.10:5060
.
.
..............
#
U 192.168.200.101:5060 -> 192.168.200.10:5060
..................
#
U 192.168.200.224:5060 -> 192.168.200.10:5060
BYE sip:11803@192.168.200.222:5060 SIP/2.0.
Via: SIP/2.0/UDP 192.168.200.224:5060;branch=z9hG4bK_0015E970817D_T7AFA8E38.
From: <sip:11801@192.168.200.10:5060>;tag=0015E970817D_T1147221029.
To: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T408052446.
Call-ID: CALL_ID21_0015E9A0D90F_T1842345680(a)192.168.200.222.
CSeq: 1461395436 BYE.
User-Agent: DPH-14001.01.
Contact: <sip:11801@192.168.200.224:5060...
 .
Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T408052446...
 . Max-Forwards: 70.
Content-Length: 0.
.

#
U 192.168.200.10:5060 -> 192.168.200.222:5060
BYE sip:11803@192.168.200.222:5060 SIP/2.0.
Record-Route: <sip:192.168.200.10;lr=on;ftag=0015E970817D_T1147221029...
 . Via: SIP/2.0/UDP
192.168.200.10;branch=z9hG4bKd255.f616.0.
Via: SIP/2.0/UDP 192.168.200.224:5060;branch=z9hG4bK_0015E970817D_T7AFA8E38.
From: <sip:11801@192.168.200.10:5060>;tag=0015E970817D_T1147221029.
To: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T408052446.
Call-ID: CALL_ID21_0015E9A0D90F_T1842345680(a)192.168.200.222.
CSeq: 1461395436 BYE.
User-Agent: DPH-14001.01.
Contact: <sip:11801@192.168.200.224:5060...
 .
Max-Forwards: 69.
Content-Length: 0.
.

#
U 192.168.200.222:5060 -> 192.168.200.10:5060
SIP/2.0 200 OK.
Via: SIP/2.0/UDP 192.168.200.10;branch=z9hG4bKd255.f616.0.
Via: SIP/2.0/UDP 192.168.200.224:5060;branch=z9hG4bK_0015E970817D_T7AFA8E38.
From: <sip:11801@192.168.200.10:5060>;tag=0015E970817D_T1147221029.
To: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T408052446.
Call-ID: CALL_ID21_0015E9A0D90F_T1842345680(a)192.168.200.222.
CSeq: 1461395436 BYE.
User-Agent: DPH-14001.01.
Content-Length: 0.
.

#
U 192.168.200.10:5060 -> 192.168.200.224:5060
SIP/2.0 200 OK.
Via: SIP/2.0/UDP 192.168.200.224:5060;branch=z9hG4bK_0015E970817D_T7AFA8E38.
From: <sip:11801@192.168.200.10:5060>;tag=0015E970817D_T1147221029.
To: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T408052446.
Call-ID: CALL_ID21_0015E9A0D90F_T1842345680(a)192.168.200.222.
CSeq: 1461395436 BYE.
User-Agent: DPH-14001.01.
Content-Length: 0.
.

#
U 192.168.200.222:5060 -> 192.168.200.10:5060
INVITE sip:1234567@192.168.200.202 &lt;sip%3A1234567(a)192.168.200.202&gt; SIP/2.0.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T5152F022.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T1123280974.
To: <sip:1234567@192.168.200.10:5060>;tag=as17b63c65.
Call-ID: CALL_ID20_0015E9A0D90F_T647138101(a)192.168.200.222.
CSeq: 1844372873 INVITE.
Contact: <sip:11803@192.168.200.222:5060...
 .
Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T1123280974...
 . Max-Forwards: 70.
Allow: ACK,BYE,CANCEL,INVITE,NOTIFY,REFER,DO,UPDATE,OPTIONS,SUBSCRIBE,INFO.
Supported: timer,replaces.
User-Agent: DPH-14001.01.
Content-Type: application/sdp.
Content-Length: 242.
.
v=0.
o=11803 273718813 273718815 IN IP4 192.168.200.222.
s=DPH-14001.01.
c=IN IP4 192.168.200.222.
t=0 0.
m=audio 41000 RTP/AVP 0 18 4.
a=rtpmap:0 PCMU/8000/1.
a=rtpmap:18 G729/8000/1.
a=fmtp:18 annexb=no.
a=rtpmap:4 G723/8000/1.
a=sendrecv.

#
U 192.168.200.10:5060 -> 192.168.200.222:5060
SIP/2.0 100 Giving a try.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T5152F022.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T1123280974.
To: <sip:1234567@192.168.200.10:5060>;tag=as17b63c65.
Call-ID: CALL_ID20_0015E9A0D90F_T647138101(a)192.168.200.222.
CSeq: 1844372873 INVITE.
Server: OpenSER (1.3.3-notls (i386/solaris)).
Content-Length: 0.
.

#
U 192.168.200.10:5060 -> 192.168.200.202:5060
INVITE sip:1234567@192.168.200.202 &lt;sip%3A1234567(a)192.168.200.202&gt; SIP/2.0.
Record-Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T1123280974...
 . Via: SIP/2.0/UDP
192.168.200.10;branch=z9hG4bK496c.a647.0.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T5152F022.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T1123280974.
To: <sip:1234567@192.168.200.10:5060>;tag=as17b63c65.
Call-ID: CALL_ID20_0015E9A0D90F_T647138101(a)192.168.200.222.
CSeq: 1844372873 INVITE.
Contact: <sip:11803@192.168.200.222:5060...
 .
Max-Forwards: 69.
Allow: ACK,BYE,CANCEL,INVITE,NOTIFY,REFER,DO,UPDATE,OPTIONS,SUBSCRIBE,INFO.
Supported: timer,replaces.
User-Agent: DPH-14001.01.
Content-Type: application/sdp.
Content-Length: 242.
.
v=0.
o=11803 273718813 273718815 IN IP4 192.168.200.222.
s=DPH-14001.01.
c=IN IP4 192.168.200.222.
t=0 0.
m=audio 41000 RTP/AVP 0 18 4.
a=rtpmap:0 PCMU/8000/1.
a=rtpmap:18 G729/8000/1.
a=fmtp:18 annexb=no.
a=rtpmap:4 G723/8000/1.
a=sendrecv.

#
U 192.168.200.202:5060 -> 192.168.200.10:5060
SIP/2.0 100 Trying.
Via: SIP/2.0/UDP 192.168.200.10;branch=z9hG4bK496c.a647.0;received=
192.168.200.10.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T5152F022.
Record-Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T1123280974...
 . From:
<sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T1123280974.
To: <sip:1234567@192.168.200.10:5060>;tag=as17b63c65.
Call-ID: CALL_ID20_0015E9A0D90F_T647138101(a)192.168.200.222.
CSeq: 1844372873 INVITE.
User-Agent: Asterisk PBX.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.
Supported: replaces.
Contact: <sip:1234567@192.168.200.202 &lt;sip%3A1234567(a)192.168.200.202&gt;...
 . Content-Length: 0.
.

#
U 192.168.200.202:5060 -> 192.168.200.10:5060
SIP/2.0 200 OK.
Via: SIP/2.0/UDP 192.168.200.10;branch=z9hG4bK496c.a647.0;received=
192.168.200.10.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T5152F022.
Record-Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T1123280974...
 . From:
<sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T1123280974.
To: <sip:1234567@192.168.200.10:5060>;tag=as17b63c65.
Call-ID: CALL_ID20_0015E9A0D90F_T647138101(a)192.168.200.222.
CSeq: 1844372873 INVITE.
User-Agent: Asterisk PBX.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.
Supported: replaces.
Contact: <sip:1234567@192.168.200.202 &lt;sip%3A1234567(a)192.168.200.202&gt;...
 . Content-Type: application/sdp.
Content-Length: 235.
.
v=0.
o=root 2712 2714 IN IP4 192.168.200.202.
s=session.
c=IN IP4 192.168.200.202.
t=0 0.
m=audio 19872 RTP/AVP 0 18.
a=rtpmap:0 PCMU/8000.
a=rtpmap:18 G729/8000.
a=fmtp:18 annexb=no.
a=silenceSupp:off - - - -.
a=ptime:20.
a=sendrecv.

#
U 192.168.200.10:5060 -> 192.168.200.222:5060
SIP/2.0 200 OK.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T5152F022.
Record-Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T1123280974...
 . From:
<sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T1123280974.
To: <sip:1234567@192.168.200.10:5060>;tag=as17b63c65.
Call-ID: CALL_ID20_0015E9A0D90F_T647138101(a)192.168.200.222.
CSeq: 1844372873 INVITE.
User-Agent: Asterisk PBX.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.
Supported: replaces.
Contact: <sip:1234567@192.168.200.202 &lt;sip%3A1234567(a)192.168.200.202&gt;...
 . Content-Type: application/sdp.
Content-Length: 235.
.
v=0.
o=root 2712 2714 IN IP4 192.168.200.202.
s=session.
c=IN IP4 192.168.200.202.
t=0 0.
m=audio 19872 RTP/AVP 0 18.
a=rtpmap:0 PCMU/8000.
a=rtpmap:18 G729/8000.
a=fmtp:18 annexb=no.
a=silenceSupp:off - - - -.
a=ptime:20.
a=sendrecv.

#
U 192.168.200.222:5060 -> 192.168.200.10:5060
ACK sip:1234567@192.168.200.202 &lt;sip%3A1234567(a)192.168.200.202&gt; SIP/2.0.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T36B8312B.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T1123280974.
To: <sip:1234567@192.168.200.10:5060>;tag=as17b63c65.
Call-ID: CALL_ID20_0015E9A0D90F_T647138101(a)192.168.200.222.
CSeq: 1844372873 ACK.
User-Agent: DPH-14001.01.
Contact: <sip:11803@192.168.200.222:5060...
 .
Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T1123280974...
 . Max-Forwards: 70.
Content-Length: 0.
.

#
U 192.168.200.10:5060 -> 192.168.200.202:5060
ACK sip:1234567@192.168.200.202 &lt;sip%3A1234567(a)192.168.200.202&gt; SIP/2.0.
Record-Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T1123280974...
 . Via: SIP/2.0/UDP
192.168.200.10;branch=z9hG4bK496c.a647.2.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T36B8312B.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T1123280974.
To: <sip:1234567@192.168.200.10:5060>;tag=as17b63c65.
Call-ID: CALL_ID20_0015E9A0D90F_T647138101(a)192.168.200.222.
CSeq: 1844372873 ACK.
User-Agent: DPH-14001.01.
Contact: <sip:11803@192.168.200.222:5060...
 .
Max-Forwards: 69.
Content-Length: 0.
.

#
U 192.168.200.222:5060 -> 192.168.200.10:5060
BYE sip:1234567@192.168.200.202 &lt;sip%3A1234567(a)192.168.200.202&gt; SIP/2.0.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T2506AE3F.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T1123280974.
To: <sip:1234567@192.168.200.10:5060>;tag=as17b63c65.
Call-ID: CALL_ID20_0015E9A0D90F_T647138101(a)192.168.200.222.
CSeq: 1844372874 BYE.
User-Agent: DPH-14001.01.
Contact: <sip:11803@192.168.200.222:5060...
 .
Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T1123280974...
 . Max-Forwards: 70.
Content-Length: 0.
.

#
U 192.168.200.10:5060 -> 192.168.200.202:5060
BYE sip:1234567@192.168.200.202 &lt;sip%3A1234567(a)192.168.200.202&gt; SIP/2.0.
Record-Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T1123280974...
 . Via: SIP/2.0/UDP
192.168.200.10;branch=z9hG4bK196c.a9d3.0.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T2506AE3F.
From: <sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T1123280974.
To: <sip:1234567@192.168.200.10:5060>;tag=as17b63c65.
Call-ID: CALL_ID20_0015E9A0D90F_T647138101(a)192.168.200.222.
CSeq: 1844372874 BYE.
User-Agent: DPH-14001.01.
Contact: <sip:11803@192.168.200.222:5060...
 .
Max-Forwards: 69.
Content-Length: 0.
.

#
U 192.168.200.202:5060 -> 192.168.200.10:5060
SIP/2.0 200 OK.
Via: SIP/2.0/UDP 192.168.200.10;branch=z9hG4bK196c.a9d3.0;received=
192.168.200.10.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T2506AE3F.
Record-Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T1123280974...
 . From:
<sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T1123280974.
To: <sip:1234567@192.168.200.10:5060>;tag=as17b63c65.
Call-ID: CALL_ID20_0015E9A0D90F_T647138101(a)192.168.200.222.
CSeq: 1844372874 BYE.
User-Agent: Asterisk PBX.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.
Supported: replaces.
Contact: <sip:1234567@192.168.200.202 &lt;sip%3A1234567(a)192.168.200.202&gt;...
 . Content-Length: 0.
.

#
U 192.168.200.10:5060 -> 192.168.200.222:5060
SIP/2.0 200 OK.
Via: SIP/2.0/UDP 192.168.200.222:5060;branch=z9hG4bK_0015E9A0D90F_T2506AE3F.
Record-Route: <sip:192.168.200.10;lr=on;ftag=0015E9A0D90F_T1123280974...
 . From:
<sip:11803@192.168.200.10:5060>;tag=0015E9A0D90F_T1123280974.
To: <sip:1234567@192.168.200.10:5060>;tag=as17b63c65.
Call-ID: CALL_ID20_0015E9A0D90F_T647138101(a)192.168.200.222.
CSeq: 1844372874 BYE.
User-Agent: Asterisk PBX.
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.
Supported: replaces.
Contact: <sip:1234567@192.168.200.202 &lt;sip%3A1234567(a)192.168.200.202&gt;...
 . Content-Length: 0.
.