[asterisk-users] Call drop weirdness

Chris Nighswonger cnighswonger at foundations.edu
Wed Oct 31 09:31:25 CDT 2012 

>> I'm running Asterisk 10.7.0 with three sip trunks to my call termination
>> provider. For the most part everything works great.
>
>>However, at apparently random times and usually about 20 mins or so into
>> the call, the outbound audio stream dies.
>>The call stays connected and the inbound audio works fine.

So I've been watching this problem and was finally able to get a pcap
while it happened.

I've attached a sanitized text version of the SIP signaling
surrounding the time the outbound RTP stream dropped on this
particular call. I'm no SIP expert, so there may not be enough info in
the file to tell anything. A few notes about the file:

1. X.X.X.X is the public IP our asterisk server is behind.

2. Y.Y.Y.Y is the IP given to us by our provider to use in our SIP
trunk through which inbound calls arrive.

3. Z.Z.Z.Z is the IP of our provider's server involved in the RTP stream.

4. DID is our DID.

5. CID is the number of the incoming caller.

6. The outbound RTP stream appears to drop three packets prior to the
SIP BYE request.

Any thoughts on what might be going wrong? Do I need to post more
info? Or am I on the wrong track altogether?

Kind Regards,
Chris
-------------- next part --------------
OPTIONS sip:Y.Y.Y.Y SIP/2.0
Via: SIP/2.0/UDP X.X.X.X:5060;branch=z9hG4bK10bfdfb7;rport
Max-Forwards: 70
From: "Unknown" <sip:Unknown at X.X.X.X>;tag=as789d30aa
To: <sip:Y.Y.Y.Y>
Contact: <sip:Unknown at X.X.X.X:5060>
Call-ID: 5309893149786df519e2ffa6282fb15d at X.X.X.X:5060
CSeq: 102 OPTIONS
User-Agent: FPBX-2.10.1(10.7.0)
Date: Tue, 30 Oct 2012 17:49:18 GMT
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH
Supported: replaces, timer
Content-Length: 0

OPTIONS sip:Y.Y.Y.Y SIP/2.0
Via: SIP/2.0/UDP X.X.X.X:5060;branch=z9hG4bK24883b1c;rport
Max-Forwards: 70
From: "Unknown" <sip:Unknown at X.X.X.X>;tag=as395fd02c
To: <sip:Y.Y.Y.Y>
Contact: <sip:Unknown at X.X.X.X:5060>
Call-ID: 59e57daf68d31595480ca5927505485f at X.X.X.X:5060
CSeq: 102 OPTIONS
User-Agent: FPBX-2.10.1(10.7.0)
Date: Tue, 30 Oct 2012 17:49:18 GMT
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH
Supported: replaces, timer
Content-Length: 0

OPTIONS sip:Y.Y.Y.Y SIP/2.0
Via: SIP/2.0/UDP X.X.X.X:5060;branch=z9hG4bK10bfdfb7;rport
Max-Forwards: 70
From: "Unknown" <sip:Unknown at X.X.X.X>;tag=as789d30aa
To: <sip:Y.Y.Y.Y>
Contact: <sip:Unknown at X.X.X.X:5060>
Call-ID: 5309893149786df519e2ffa6282fb15d at X.X.X.X:5060
CSeq: 102 OPTIONS
User-Agent: FPBX-2.10.1(10.7.0)
Date: Tue, 30 Oct 2012 17:49:18 GMT
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH
Supported: replaces, timer
Content-Length: 0

OPTIONS sip:Y.Y.Y.Y SIP/2.0
Via: SIP/2.0/UDP X.X.X.X:5060;branch=z9hG4bK24883b1c;rport
Max-Forwards: 70
From: "Unknown" <sip:Unknown at X.X.X.X>;tag=as395fd02c
To: <sip:Y.Y.Y.Y>
Contact: <sip:Unknown at X.X.X.X:5060>
Call-ID: 59e57daf68d31595480ca5927505485f at X.X.X.X:5060
CSeq: 102 OPTIONS
User-Agent: FPBX-2.10.1(10.7.0)
Date: Tue, 30 Oct 2012 17:49:18 GMT
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH
Supported: replaces, timer
Content-Length: 0

SIP/2.0 503 Unable to load gateways
Via: SIP/2.0/UDP X.X.X.X:5060;branch=z9hG4bK24883b1c;rport=5060
From: "Unknown" <sip:Unknown at X.X.X.X>;tag=as395fd02c
To: <sip:Y.Y.Y.Y>;tag=71fd1b189ab888f8d5fb24b00af87228.acb1
Call-ID: 59e57daf68d31595480ca5927505485f at X.X.X.X:5060
CSeq: 102 OPTIONS
Server: DFSGW 
Content-Length: 0

OPTIONS sip:Y.Y.Y.Y SIP/2.0
Via: SIP/2.0/UDP X.X.X.X:5060;branch=z9hG4bK10bfdfb7;rport
Max-Forwards: 70
From: "Unknown" <sip:Unknown at X.X.X.X>;tag=as789d30aa
To: <sip:Y.Y.Y.Y>
Contact: <sip:Unknown at X.X.X.X:5060>
Call-ID: 5309893149786df519e2ffa6282fb15d at X.X.X.X:5060
CSeq: 102 OPTIONS
User-Agent: FPBX-2.10.1(10.7.0)
Date: Tue, 30 Oct 2012 17:49:18 GMT
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH
Supported: replaces, timer
Content-Length: 0

SIP/2.0 503 Unable to load gateways
Via: SIP/2.0/UDP X.X.X.X:5060;branch=z9hG4bK10bfdfb7;rport=5060
From: "Unknown" <sip:Unknown at X.X.X.X>;tag=as789d30aa
To: <sip:Y.Y.Y.Y>;tag=71fd1b189ab888f8d5fb24b00af87228.1bf8
Call-ID: 5309893149786df519e2ffa6282fb15d at X.X.X.X:5060
CSeq: 102 OPTIONS
Server: DFSGW 
Content-Length: 0

OPTIONS sip:Y.Y.Y.Y SIP/2.0
Via: SIP/2.0/UDP X.X.X.X:5060;branch=z9hG4bK65801b0b;rport
Max-Forwards: 70
From: "Unknown" <sip:Unknown at X.X.X.X>;tag=as46c7a0b8
To: <sip:Y.Y.Y.Y>
Contact: <sip:Unknown at X.X.X.X:5060>
Call-ID: 0d78056a4c3c4b5d167b013c41450be9 at X.X.X.X:5060
CSeq: 102 OPTIONS
User-Agent: FPBX-2.10.1(10.7.0)
Date: Tue, 30 Oct 2012 17:49:30 GMT
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH
Supported: replaces, timer
Content-Length: 0

OPTIONS sip:Y.Y.Y.Y SIP/2.0
Via: SIP/2.0/UDP X.X.X.X:5060;branch=z9hG4bK65801b0b;rport
Max-Forwards: 70
From: "Unknown" <sip:Unknown at X.X.X.X>;tag=as46c7a0b8
To: <sip:Y.Y.Y.Y>
Contact: <sip:Unknown at X.X.X.X:5060>
Call-ID: 0d78056a4c3c4b5d167b013c41450be9 at X.X.X.X:5060
CSeq: 102 OPTIONS
User-Agent: FPBX-2.10.1(10.7.0)
Date: Tue, 30 Oct 2012 17:49:30 GMT
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH
Supported: replaces, timer
Content-Length: 0

OPTIONS sip:Y.Y.Y.Y SIP/2.0
Via: SIP/2.0/UDP X.X.X.X:5060;branch=z9hG4bK65801b0b;rport
Max-Forwards: 70
From: "Unknown" <sip:Unknown at X.X.X.X>;tag=as46c7a0b8
To: <sip:Y.Y.Y.Y>
Contact: <sip:Unknown at X.X.X.X:5060>
Call-ID: 0d78056a4c3c4b5d167b013c41450be9 at X.X.X.X:5060
CSeq: 102 OPTIONS
User-Agent: FPBX-2.10.1(10.7.0)
Date: Tue, 30 Oct 2012 17:49:30 GMT
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH
Supported: replaces, timer
Content-Length: 0

OPTIONS sip:Y.Y.Y.Y SIP/2.0
Via: SIP/2.0/UDP X.X.X.X:5060;branch=z9hG4bK65801b0b;rport
Max-Forwards: 70
From: "Unknown" <sip:Unknown at X.X.X.X>;tag=as46c7a0b8
To: <sip:Y.Y.Y.Y>
Contact: <sip:Unknown at X.X.X.X:5060>
Call-ID: 0d78056a4c3c4b5d167b013c41450be9 at X.X.X.X:5060
CSeq: 102 OPTIONS
User-Agent: FPBX-2.10.1(10.7.0)
Date: Tue, 30 Oct 2012 17:49:30 GMT
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH
Supported: replaces, timer
Content-Length: 0

OPTIONS sip:Y.Y.Y.Y SIP/2.0
Via: SIP/2.0/UDP X.X.X.X:5060;branch=z9hG4bK65801b0b;rport
Max-Forwards: 70
From: "Unknown" <sip:Unknown at X.X.X.X>;tag=as46c7a0b8
To: <sip:Y.Y.Y.Y>
Contact: <sip:Unknown at X.X.X.X:5060>
Call-ID: 0d78056a4c3c4b5d167b013c41450be9 at X.X.X.X:5060
CSeq: 102 OPTIONS
User-Agent: FPBX-2.10.1(10.7.0)
Date: Tue, 30 Oct 2012 17:49:30 GMT
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH
Supported: replaces, timer
Content-Length: 0

BYE sip:term7599033149CID at Z.Z.Z.Z SIP/2.0
Via: SIP/2.0/UDP X.X.X.X:5060;branch=z9hG4bK1c83ab70;rport
Route: <sip:Y.Y.Y.Y;lr=on;ftag=as66ae957c>
Max-Forwards: 70
From: "DID" <sip:DID at X.X.X.X>;tag=as66ae957c
To: <sip:CID at Y.Y.Y.Y>;tag=as2c0c8ffb
Call-ID: 3d3ca2b57eca74c07f3b330d40bb0495 at X.X.X.X:5060
CSeq: 103 BYE
User-Agent: FPBX-2.10.1(10.7.0)
X-Asterisk-HangupCause: Normal Clearing
X-Asterisk-HangupCauseCode: 16
Content-Length: 0

BYE sip:term7599033149CID at Z.Z.Z.Z SIP/2.0
Via: SIP/2.0/UDP X.X.X.X:5060;branch=z9hG4bK1c83ab70;rport
Route: <sip:Y.Y.Y.Y;lr=on;ftag=as66ae957c>
Max-Forwards: 70
From: "DID" <sip:DID at X.X.X.X>;tag=as66ae957c
To: <sip:CID at Y.Y.Y.Y>;tag=as2c0c8ffb
Call-ID: 3d3ca2b57eca74c07f3b330d40bb0495 at X.X.X.X:5060
CSeq: 103 BYE
User-Agent: FPBX-2.10.1(10.7.0)
X-Asterisk-HangupCause: Normal Clearing
X-Asterisk-HangupCauseCode: 16
Content-Length: 0

BYE sip:term7599033149CID at Z.Z.Z.Z SIP/2.0
Via: SIP/2.0/UDP X.X.X.X:5060;branch=z9hG4bK1c83ab70;rport
Route: <sip:Y.Y.Y.Y;lr=on;ftag=as66ae957c>
Max-Forwards: 70
From: "DID" <sip:DID at X.X.X.X>;tag=as66ae957c
To: <sip:CID at Y.Y.Y.Y>;tag=as2c0c8ffb
Call-ID: 3d3ca2b57eca74c07f3b330d40bb0495 at X.X.X.X:5060
CSeq: 103 BYE
User-Agent: FPBX-2.10.1(10.7.0)
X-Asterisk-HangupCause: Normal Clearing
X-Asterisk-HangupCauseCode: 16
Content-Length: 0

BYE sip:term7599033149CID at Z.Z.Z.Z SIP/2.0
Via: SIP/2.0/UDP X.X.X.X:5060;branch=z9hG4bK1c83ab70;rport
Route: <sip:Y.Y.Y.Y;lr=on;ftag=as66ae957c>
Max-Forwards: 70
From: "DID" <sip:DID at X.X.X.X>;tag=as66ae957c
To: <sip:CID at Y.Y.Y.Y>;tag=as2c0c8ffb
Call-ID: 3d3ca2b57eca74c07f3b330d40bb0495 at X.X.X.X:5060
CSeq: 103 BYE
User-Agent: FPBX-2.10.1(10.7.0)
X-Asterisk-HangupCause: Normal Clearing
X-Asterisk-HangupCauseCode: 16
Content-Length: 0

BYE sip:term7599033149CID at Z.Z.Z.Z SIP/2.0
Via: SIP/2.0/UDP X.X.X.X:5060;branch=z9hG4bK1c83ab70;rport
Route: <sip:Y.Y.Y.Y;lr=on;ftag=as66ae957c>
Max-Forwards: 70
From: "DID" <sip:DID at X.X.X.X>;tag=as66ae957c
To: <sip:CID at Y.Y.Y.Y>;tag=as2c0c8ffb
Call-ID: 3d3ca2b57eca74c07f3b330d40bb0495 at X.X.X.X:5060
CSeq: 103 BYE
User-Agent: FPBX-2.10.1(10.7.0)
X-Asterisk-HangupCause: Normal Clearing
X-Asterisk-HangupCauseCode: 16
Content-Length: 0

BYE sip:term7599033149CID at Z.Z.Z.Z SIP/2.0
Via: SIP/2.0/UDP X.X.X.X:5060;branch=z9hG4bK1c83ab70;rport
Route: <sip:Y.Y.Y.Y;lr=on;ftag=as66ae957c>
Max-Forwards: 70
From: "DID" <sip:DID at X.X.X.X>;tag=as66ae957c
To: <sip:CID at Y.Y.Y.Y>;tag=as2c0c8ffb
Call-ID: 3d3ca2b57eca74c07f3b330d40bb0495 at X.X.X.X:5060
CSeq: 103 BYE
User-Agent: FPBX-2.10.1(10.7.0)
X-Asterisk-HangupCause: Normal Clearing
X-Asterisk-HangupCauseCode: 16
Content-Length: 0

OPTIONS sip:Y.Y.Y.Y SIP/2.0
Via: SIP/2.0/UDP X.X.X.X:5060;branch=z9hG4bK4e931768;rport
Max-Forwards: 70
From: "Unknown" <sip:Unknown at X.X.X.X>;tag=as1e693c41
To: <sip:Y.Y.Y.Y>
Contact: <sip:Unknown at X.X.X.X:5060>
Call-ID: 428ba0b62c49533556633df83f8b17ea at X.X.X.X:5060
CSeq: 102 OPTIONS
User-Agent: FPBX-2.10.1(10.7.0)
Date: Tue, 30 Oct 2012 17:49:44 GMT
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH
Supported: replaces, timer
Content-Length: 0

BYE sip:term7599033149CID at Z.Z.Z.Z SIP/2.0
Via: SIP/2.0/UDP X.X.X.X:5060;branch=z9hG4bK1c83ab70;rport
Route: <sip:Y.Y.Y.Y;lr=on;ftag=as66ae957c>
Max-Forwards: 70
From: "DID" <sip:DID at X.X.X.X>;tag=as66ae957c
To: <sip:CID at Y.Y.Y.Y>;tag=as2c0c8ffb
Call-ID: 3d3ca2b57eca74c07f3b330d40bb0495 at X.X.X.X:5060
CSeq: 103 BYE
User-Agent: FPBX-2.10.1(10.7.0)
X-Asterisk-HangupCause: Normal Clearing
X-Asterisk-HangupCauseCode: 16
Content-Length: 0

OPTIONS sip:Y.Y.Y.Y SIP/2.0
Via: SIP/2.0/UDP X.X.X.X:5060;branch=z9hG4bK4e931768;rport
Max-Forwards: 70
From: "Unknown" <sip:Unknown at X.X.X.X>;tag=as1e693c41
To: <sip:Y.Y.Y.Y>
Contact: <sip:Unknown at X.X.X.X:5060>
Call-ID: 428ba0b62c49533556633df83f8b17ea at X.X.X.X:5060
CSeq: 102 OPTIONS
User-Agent: FPBX-2.10.1(10.7.0)
Date: Tue, 30 Oct 2012 17:49:44 GMT
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH
Supported: replaces, timer
Content-Length: 0

OPTIONS sip:Y.Y.Y.Y SIP/2.0
Via: SIP/2.0/UDP X.X.X.X:5060;branch=z9hG4bK4e931768;rport
Max-Forwards: 70
From: "Unknown" <sip:Unknown at X.X.X.X>;tag=as1e693c41
To: <sip:Y.Y.Y.Y>
Contact: <sip:Unknown at X.X.X.X:5060>
Call-ID: 428ba0b62c49533556633df83f8b17ea at X.X.X.X:5060
CSeq: 102 OPTIONS
User-Agent: FPBX-2.10.1(10.7.0)
Date: Tue, 30 Oct 2012 17:49:44 GMT
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH
Supported: replaces, timer
Content-Length: 0

OPTIONS sip:Y.Y.Y.Y SIP/2.0
Via: SIP/2.0/UDP X.X.X.X:5060;branch=z9hG4bK4e931768;rport
Max-Forwards: 70
From: "Unknown" <sip:Unknown at X.X.X.X>;tag=as1e693c41
To: <sip:Y.Y.Y.Y>
Contact: <sip:Unknown at X.X.X.X:5060>
Call-ID: 428ba0b62c49533556633df83f8b17ea at X.X.X.X:5060
CSeq: 102 OPTIONS
User-Agent: FPBX-2.10.1(10.7.0)
Date: Tue, 30 Oct 2012 17:49:44 GMT
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH
Supported: replaces, timer
Content-Length: 0

OPTIONS sip:Y.Y.Y.Y SIP/2.0
Via: SIP/2.0/UDP X.X.X.X:5060;branch=z9hG4bK4e931768;rport
Max-Forwards: 70
From: "Unknown" <sip:Unknown at X.X.X.X>;tag=as1e693c41
To: <sip:Y.Y.Y.Y>
Contact: <sip:Unknown at X.X.X.X:5060>
Call-ID: 428ba0b62c49533556633df83f8b17ea at X.X.X.X:5060
CSeq: 102 OPTIONS
User-Agent: FPBX-2.10.1(10.7.0)
Date: Tue, 30 Oct 2012 17:49:44 GMT
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH
Supported: replaces, timer
Content-Length: 0

BYE sip:DID at X.X.X.X:5060 SIP/2.0
Record-Route: <sip:Y.Y.Y.Y;lr=on;ftag=as2c0c8ffb>
Via: SIP/2.0/UDP Y.Y.Y.Y;branch=z9hG4bK06c3.04263121.0
Via: SIP/2.0/UDP Z.Z.Z.Z:5060;received=Z.Z.Z.Z;branch=z9hG4bK3bdeddbc;rport=5060
From: <sip:CID at Y.Y.Y.Y>;tag=as2c0c8ffb
To: "DID" <sip:DID at X.X.X.X>;tag=as66ae957c
Call-ID: 3d3ca2b57eca74c07f3b330d40bb0495 at X.X.X.X:5060
CSeq: 102 BYE
User-Agent: DidForSale-GW
Max-Forwards: 69
P-hint: rr-enforced
Content-Length: 0

SIP/2.0 481 Call leg/transaction does not exist
Via: SIP/2.0/UDP Y.Y.Y.Y;branch=z9hG4bK06c3.04263121.0;received=Y.Y.Y.Y;rport=5060
Via: SIP/2.0/UDP Z.Z.Z.Z:5060;received=Z.Z.Z.Z;branch=z9hG4bK3bdeddbc;rport=5060
From: <sip:CID at Y.Y.Y.Y>;tag=as2c0c8ffb
To: "DID" <sip:DID at X.X.X.X>;tag=as66ae957c
Call-ID: 3d3ca2b57eca74c07f3b330d40bb0495 at X.X.X.X:5060
CSeq: 102 BYE
Server: FPBX-2.10.1(10.7.0)
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH
Supported: replaces, timer
Content-Length: 0

OPTIONS sip:Y.Y.Y.Y SIP/2.0
Via: SIP/2.0/UDP X.X.X.X:5060;branch=z9hG4bK2a422994;rport
Max-Forwards: 70
From: "Unknown" <sip:Unknown at X.X.X.X>;tag=as68e66a28
To: <sip:Y.Y.Y.Y>
Contact: <sip:Unknown at X.X.X.X:5060>
Call-ID: 5b7ba05620feaf4675fc7df50598246f at X.X.X.X:5060
CSeq: 102 OPTIONS
User-Agent: FPBX-2.10.1(10.7.0)
Date: Tue, 30 Oct 2012 17:49:58 GMT
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH
Supported: replaces, timer
Content-Length: 0

BYE sip:DID at X.X.X.X:5060 SIP/2.0
Record-Route: <sip:Y.Y.Y.Y;lr=on;ftag=as2c0c8ffb>
Via: SIP/2.0/UDP Y.Y.Y.Y;branch=z9hG4bK06c3.04263121.0
Via: SIP/2.0/UDP Z.Z.Z.Z:5060;received=Z.Z.Z.Z;branch=z9hG4bK3bdeddbc;rport=5060
From: <sip:CID at Y.Y.Y.Y>;tag=as2c0c8ffb
To: "DID" <sip:DID at X.X.X.X>;tag=as66ae957c
Call-ID: 3d3ca2b57eca74c07f3b330d40bb0495 at X.X.X.X:5060
CSeq: 102 BYE
User-Agent: DidForSale-GW
Max-Forwards: 69
P-hint: rr-enforced
Content-Length: 0

SIP/2.0 481 Call leg/transaction does not exist
Via: SIP/2.0/UDP Y.Y.Y.Y;branch=z9hG4bK06c3.04263121.0;received=Y.Y.Y.Y;rport=5060
Via: SIP/2.0/UDP Z.Z.Z.Z:5060;received=Z.Z.Z.Z;branch=z9hG4bK3bdeddbc;rport=5060
From: <sip:CID at Y.Y.Y.Y>;tag=as2c0c8ffb
To: "DID" <sip:DID at X.X.X.X>;tag=as66ae957c
Call-ID: 3d3ca2b57eca74c07f3b330d40bb0495 at X.X.X.X:5060
CSeq: 102 BYE
Server: FPBX-2.10.1(10.7.0)
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH
Supported: replaces, timer
Content-Length: 0

OPTIONS sip:Y.Y.Y.Y SIP/2.0
Via: SIP/2.0/UDP X.X.X.X:5060;branch=z9hG4bK2a422994;rport
Max-Forwards: 70
From: "Unknown" <sip:Unknown at X.X.X.X>;tag=as68e66a28
To: <sip:Y.Y.Y.Y>
Contact: <sip:Unknown at X.X.X.X:5060>
Call-ID: 5b7ba05620feaf4675fc7df50598246f at X.X.X.X:5060
CSeq: 102 OPTIONS
User-Agent: FPBX-2.10.1(10.7.0)
Date: Tue, 30 Oct 2012 17:49:58 GMT
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH
Supported: replaces, timer
Content-Length: 0

BYE sip:DID at X.X.X.X:5060 SIP/2.0
Record-Route: <sip:Y.Y.Y.Y;lr=on;ftag=as2c0c8ffb>
Via: SIP/2.0/UDP Y.Y.Y.Y;branch=z9hG4bK06c3.04263121.0
Via: SIP/2.0/UDP Z.Z.Z.Z:5060;received=Z.Z.Z.Z;branch=z9hG4bK3bdeddbc;rport=5060
From: <sip:CID at Y.Y.Y.Y>;tag=as2c0c8ffb
To: "DID" <sip:DID at X.X.X.X>;tag=as66ae957c
Call-ID: 3d3ca2b57eca74c07f3b330d40bb0495 at X.X.X.X:5060
CSeq: 102 BYE
User-Agent: DidForSale-GW
Max-Forwards: 69
P-hint: rr-enforced
Content-Length: 0

SIP/2.0 481 Call leg/transaction does not exist
Via: SIP/2.0/UDP Y.Y.Y.Y;branch=z9hG4bK06c3.04263121.0;received=Y.Y.Y.Y;rport=5060
Via: SIP/2.0/UDP Z.Z.Z.Z:5060;received=Z.Z.Z.Z;branch=z9hG4bK3bdeddbc;rport=5060
From: <sip:CID at Y.Y.Y.Y>;tag=as2c0c8ffb
To: "DID" <sip:DID at X.X.X.X>;tag=as66ae957c
Call-ID: 3d3ca2b57eca74c07f3b330d40bb0495 at X.X.X.X:5060
CSeq: 102 BYE
Server: FPBX-2.10.1(10.7.0)
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH
Supported: replaces, timer
Content-Length: 0

OPTIONS sip:Y.Y.Y.Y SIP/2.0
Via: SIP/2.0/UDP X.X.X.X:5060;branch=z9hG4bK2a422994;rport
Max-Forwards: 70
From: "Unknown" <sip:Unknown at X.X.X.X>;tag=as68e66a28
To: <sip:Y.Y.Y.Y>
Contact: <sip:Unknown at X.X.X.X:5060>
Call-ID: 5b7ba05620feaf4675fc7df50598246f at X.X.X.X:5060
CSeq: 102 OPTIONS
User-Agent: FPBX-2.10.1(10.7.0)
Date: Tue, 30 Oct 2012 17:49:58 GMT
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH
Supported: replaces, timer
Content-Length: 0

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