[OpenSIPS-Users] Why is OpenSipS sending a 407

Dovid Bender os-list at dovid.net
Mon Feb 11 20:08:49 CET 2013 

Hi,

Our set up is this:
Client -> OpenSipS -> Custom BLF service (on port 5080).

In the DP we have:
                if ( method == "MESSAGE" || method == "NOTIFY" || method ==
"SUBSCRIBE" || method == "UNSUBSCRIBE" ) {
                        rewritehostport( "127.0.0.1:5080" );
                        route( 2 );
                        exit;

Now we have some kind of issue with our BLF service where there is a delay
on the response from it. This causes the phone to send another SUBSCRIBE.
Here is what happens.

1) Phone (SUBSCRIBE) -> OpenSips
2) Phone <- (407 with nonce) OpenSIpS
3) Phone (SUBSCRIBE WITH nonce) -> OpenSips
4) OpenSips -> Custom BLF service (port 5080)
There is no response and OpenSipS sends it again to port 5080
5) OpenSips -> Custom BLF service (port 5080)
6) Phone (SUBSCRIBE WITH same nonce as earlier) -> OpenSips
7) Phone <- (407 with NEW nonce) OpenSIpS
8) OpenSipS <- (100 trying) Custom BLF Service
9) OpenSIpS <- (200 OK) Custom BLF service
10) Phone <- (200 OK)	OpenSiPS
It seems that #9 and #10 are a result of #3. My question is why when the
phone sends the subscribe again in #6 does OpenSipS respond with a new nonce
and not to wait or something else along those lines. Yes I am using a really
old version 1.4.4.

Please see an ngrep trace below.



U 2013/02/11 12:04:11.011210 67.198.80.143:22413 -> 203.144.218.9:5060
SUBSCRIBE sip:51810402 at nyc-02.mydomain.net SIP/2.0.
Via: SIP/2.0/UDP 10.0.0.102;branch=z9hG4bKbf285746A6088D1F.
From: "John Doe" <sip:51810401 at nyc-02.mydomain.net>;tag=892B04F3-2D3963A0.
To: <sip:51810402 at nyc-02.mydomain.net>.
CSeq: 1 SUBSCRIBE.
Call-ID: 5a00cffc-a02c6e6d-59dbeb42 at 10.0.0.102.
Contact: <sip:51810401 at 10.0.0.102>.
Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY,
PRACK, UPDATE, REFER.
Event: dialog.
User-Agent: PolycomSoundPointIP-SPIP_550-UA/3.3.3.0069.
Accept-Language: en.
Accept: application/dialog-info+xml.
Max-Forwards: 70.
Expires: 120.
Content-Length: 0.
.




U 2013/02/11 12:04:11.011693 203.144.218.9:5060 -> 67.198.80.143:22413
SIP/2.0 407 Proxy Authentication Required.
Via: SIP/2.0/UDP
10.0.0.102;branch=z9hG4bKbf285746A6088D1F;rport=22413;received=67.198.80.143
.
From: "John Doe" <sip:51810401 at nyc-02.mydomain.net>;tag=892B04F3-2D3963A0.
To:
<sip:51810402 at nyc-02.mydomain.net>;tag=3cedc95538ff95eef7f88d49489ad924.2130
.
CSeq: 1 SUBSCRIBE.
Call-ID: 5a00cffc-a02c6e6d-59dbeb42 at 10.0.0.102.
Proxy-Authenticate: Digest realm="nyc-02.mydomain.net",
nonce="511924a900005c1ba157752dafbb90e3ea950be45fe6a055".
Server: PBX_MANAGER.
Content-Length: 0.
Warning: 392 203.144.218.9:5060 "Noisy feedback tells:  pid=12565
req_src_ip=67.198.80.143 req_src_port=22413
in_uri=sip:51810402 at nyc-02.mydomain.net
out_uri=sip:51810402 at nyc-02.mydomain.net via_cnt==1".
.




U 2013/02/11 12:04:11.036514 67.198.80.143:22413 -> 203.144.218.9:5060
SUBSCRIBE sip:51810402 at nyc-02.mydomain.net SIP/2.0.
Via: SIP/2.0/UDP 10.0.0.102;branch=z9hG4bKe11f68b965DEA98.
From: "John Doe" <sip:51810401 at nyc-02.mydomain.net>;tag=892B04F3-2D3963A0.
To: <sip:51810402 at nyc-02.mydomain.net>.
CSeq: 2 SUBSCRIBE.
Call-ID: 5a00cffc-a02c6e6d-59dbeb42 at 10.0.0.102.
Contact: <sip:51810401 at 10.0.0.102>.
Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY,
PRACK, UPDATE, REFER.
Event: dialog.
User-Agent: PolycomSoundPointIP-SPIP_550-UA/3.3.3.0069.
Accept-Language: en.
Accept: application/dialog-info+xml.
Proxy-Authorization: Digest username="51810401",
realm="nyc-02.mydomain.net",
nonce="511924a900005c1ba157752dafbb90e3ea950be45fe6a055",
uri="sip:51810402 at nyc-02.mydomain.net",
response="579c8a1809c8e4bc1d88c9b070185b11", algorithm=MD5.
Max-Forwards: 70.
Expires: 120.
Content-Length: 0.
.




U 2013/02/11 12:04:11.037479 203.144.218.9:5060 -> 127.0.0.1:5080
SUBSCRIBE sip:51810402 at 127.0.0.1:5080;transport=udp SIP/2.0.
Record-Route: <sip:203.144.218.9;lr=on;ftag=892B04F3-2D3963A0>.
Via: SIP/2.0/UDP 203.144.218.9;branch=z9hG4bK315.0ca86cc.0.
Via: SIP/2.0/UDP
10.0.0.102;rport=22413;received=67.198.80.143;branch=z9hG4bKe11f68b965DEA98.
From: "John Doe" <sip:51810401 at nyc-02.mydomain.net>;tag=892B04F3-2D3963A0.
To: <sip:51810402 at nyc-02.mydomain.net>.
CSeq: 2 SUBSCRIBE.
Call-ID: 5a00cffc-a02c6e6d-59dbeb42 at 10.0.0.102.
Contact: <sip:51810401 at 67.198.80.143:22413>.
Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY,
PRACK, UPDATE, REFER.
Event: dialog.
User-Agent: PolycomSoundPointIP-SPIP_550-UA/3.3.3.0069.
Accept-Language: en.
Accept: application/dialog-info+xml.
Proxy-Authorization: Digest username="51810401",
realm="nyc-02.mydomain.net",
nonce="511924a900005c1ba157752dafbb90e3ea950be45fe6a055",
uri="sip:51810402 at nyc-02.mydomain.net",
response="579c8a1809c8e4bc1d88c9b070185b11", algorithm=MD5.
Max-Forwards: 69.
Expires: 120.
Content-Length: 0.
X-Enswitch-RURI: sip:51810402 at nyc-02.mydomain.net.
X-Enswitch-Source: 67.198.80.143:22413.
.




U 2013/02/11 12:04:11.528263 203.144.218.9:5060 -> 127.0.0.1:5080
SUBSCRIBE sip:51810402 at 127.0.0.1:5080;transport=udp SIP/2.0.
Record-Route: <sip:203.144.218.9;lr=on;ftag=892B04F3-2D3963A0>.
Via: SIP/2.0/UDP 203.144.218.9;branch=z9hG4bK315.0ca86cc.0.
Via: SIP/2.0/UDP
10.0.0.102;rport=22413;received=67.198.80.143;branch=z9hG4bKe11f68b965DEA98.
From: "John Doe" <sip:51810401 at nyc-02.mydomain.net>;tag=892B04F3-2D3963A0.
To: <sip:51810402 at nyc-02.mydomain.net>.
CSeq: 2 SUBSCRIBE.
Call-ID: 5a00cffc-a02c6e6d-59dbeb42 at 10.0.0.102.
Contact: <sip:51810401 at 67.198.80.143:22413>.
Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY,
PRACK, UPDATE, REFER.
Event: dialog.
User-Agent: PolycomSoundPointIP-SPIP_550-UA/3.3.3.0069.
Accept-Language: en.
Accept: application/dialog-info+xml.
Proxy-Authorization: Digest username="51810401",
realm="nyc-02.mydomain.net",
nonce="511924a900005c1ba157752dafbb90e3ea950be45fe6a055",
uri="sip:51810402 at nyc-02.mydomain.net",
response="579c8a1809c8e4bc1d88c9b070185b11", algorithm=MD5.
Max-Forwards: 69.
Expires: 120.
Content-Length: 0.
X-Enswitch-RURI: sip:51810402 at nyc-02.mydomain.net.
X-Enswitch-Source: 67.198.80.143:22413.
.




U 2013/02/11 12:04:11.615394 67.198.80.143:22413 -> 203.144.218.9:5060
SUBSCRIBE sip:51810402 at nyc-02.mydomain.net SIP/2.0.
Via: SIP/2.0/UDP 10.0.0.102;branch=z9hG4bKe11f68b965DEA98.
From: "John Doe" <sip:51810401 at nyc-02.mydomain.net>;tag=892B04F3-2D3963A0.
To: <sip:51810402 at nyc-02.mydomain.net>.
CSeq: 2 SUBSCRIBE.
Call-ID: 5a00cffc-a02c6e6d-59dbeb42 at 10.0.0.102.
Contact: <sip:51810401 at 10.0.0.102>.
Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY,
PRACK, UPDATE, REFER.
Event: dialog.
User-Agent: PolycomSoundPointIP-SPIP_550-UA/3.3.3.0069.
Accept-Language: en.
Accept: application/dialog-info+xml.
Proxy-Authorization: Digest username="51810401",
realm="nyc-02.mydomain.net",
nonce="511924a900005c1ba157752dafbb90e3ea950be45fe6a055",
uri="sip:51810402 at nyc-02.mydomain.net",
response="579c8a1809c8e4bc1d88c9b070185b11", algorithm=MD5.
Max-Forwards: 70.
Expires: 120.
Content-Length: 0.
.




U 2013/02/11 12:04:11.615986 203.144.218.9:5060 -> 67.198.80.143:22413
SIP/2.0 407 Proxy Authentication Required.
Via: SIP/2.0/UDP
10.0.0.102;branch=z9hG4bKe11f68b965DEA98;rport=22413;received=67.198.80.143.
From: "John Doe" <sip:51810401 at nyc-02.mydomain.net>;tag=892B04F3-2D3963A0.
To:
<sip:51810402 at nyc-02.mydomain.net>;tag=3cedc95538ff95eef7f88d49489ad924.aec3
.
CSeq: 2 SUBSCRIBE.
Call-ID: 5a00cffc-a02c6e6d-59dbeb42 at 10.0.0.102.
Proxy-Authenticate: Digest realm="nyc-02.mydomain.net",
nonce="511924a900005c69243e513a5c63be6043071b3f968afd87".
Server: PBX_MANAGER.
Content-Length: 0.
Warning: 392 203.144.218.9:5060 "Noisy feedback tells:  pid=12566
req_src_ip=67.198.80.143 req_src_port=22413
in_uri=sip:51810402 at nyc-02.mydomain.net
out_uri=sip:51810402 at nyc-02.mydomain.net via_cnt==1".
.




U 2013/02/11 12:04:11.809258 127.0.0.1:5080 -> 203.144.218.9:5060
SIP/2.0 100 Trying.
Via: SIP/2.0/UDP 203.144.218.9;branch=z9hG4bK315.0ca86cc.0.
Via: SIP/2.0/UDP
10.0.0.102;rport=22413;received=67.198.80.143;branch=z9hG4bKe11f68b965DEA98.
From: "John Doe" <sip:51810401 at nyc-02.mydomain.net>;tag=892B04F3-2D3963A0.
To: <sip:51810402 at nyc-02.mydomain.net>.
Call-ID: 5a00cffc-a02c6e6d-59dbeb42 at 10.0.0.102.
CSeq: 2 SUBSCRIBE.
User-Agent: Enswitch SIP server.
Content-Length: 0.
.




U 2013/02/11 12:04:11.818491 127.0.0.1:5080 -> 203.144.218.9:5060
SIP/2.0 200 OK.
Via: SIP/2.0/UDP 203.144.218.9;branch=z9hG4bK315.0ca86cc.0.
Via: SIP/2.0/UDP
10.0.0.102;rport=22413;received=67.198.80.143;branch=z9hG4bKe11f68b965DEA98.
From: "John Doe" <sip:51810401 at nyc-02.mydomain.net>;tag=892B04F3-2D3963A0.
To: <sip:51810402 at nyc-02.mydomain.net>;tag=13606022516209.
Call-ID: 5a00cffc-a02c6e6d-59dbeb42 at 10.0.0.102.
CSeq: 2 SUBSCRIBE.
Expires: 120.
Contact: <sip:51810402 at nyc-02.mydomain.net>.
User-Agent: Enswitch SIP server.
Content-Length: 0.
.




U 2013/02/11 12:04:11.818654 203.144.218.9:5060 -> 67.198.80.143:22413
SIP/2.0 200 OK.
Via: SIP/2.0/UDP
10.0.0.102;rport=22413;received=67.198.80.143;branch=z9hG4bKe11f68b965DEA98.
From: "John Doe" <sip:51810401 at nyc-02.mydomain.net>;tag=892B04F3-2D3963A0.
To: <sip:51810402 at nyc-02.mydomain.net>;tag=13606022516209.
Call-ID: 5a00cffc-a02c6e6d-59dbeb42 at 10.0.0.102.
CSeq: 2 SUBSCRIBE.
Expires: 120.
Contact: <sip:51810402 at nyc-02.mydomain.net>.
User-Agent: Enswitch SIP server.
Content-Length: 0.
.




U 2013/02/11 12:04:11.841756 203.144.218.9:46866 -> 203.144.218.9:5060
NOTIFY sip:51810401 at 203.144.218.9:5060 SIP/2.0.
Via: SIP/2.0/UDP 127.0.0.1.
From: <sip:51810402 at nyc-02.mydomain.net>;tag=13606022516209.
To: <sip:51810401 at nyc-02.mydomain.net>;tag=892B04F3-2D3963A0.
Contact: <sip:51810402 at nyc-02.mydomain.net>.
Call-ID: 5a00cffc-a02c6e6d-59dbeb42 at 10.0.0.102.
CSeq: 480931435 NOTIFY.
User-Agent: Enswitch presence server.
Event: dialog.
Subscription-State: active;expires=119.
Content-Type: application/dialog-info+xml.
Content-Length: 379.
.
<?xml version="1.0" encoding="UTF-8"?>
<dialog-info xmlns="urn:ietf:params:xml:ns:dialog-info" version="0"
state="full" entity="sip:51810402 at nyc-02.mydomain.net">
<dialog id="51810401" direction="recipient">
<state>terminated</state>
<local>
<identity>sip:51810402 at nyc-02.mydomain.net</identity>
</local>
<remote>
<identity></identity>
</remote>
</dialog>
</dialog-info>




U 2013/02/11 12:04:11.842822 203.144.218.9:5060 -> 67.198.80.143:22413
NOTIFY sip:51810401 at 10.0.0.102 SIP/2.0.
Max-Forwards: 10.
Record-Route: <sip:203.144.218.9;lr=on;ftag=13606022516209>.
Via: SIP/2.0/UDP 203.144.218.9;branch=z9hG4bK0509.b94f1f21.0.
Via: SIP/2.0/UDP 127.0.0.1;rport=46866;received=203.144.218.9.
From: <sip:51810402 at nyc-02.mydomain.net>;tag=13606022516209.
To: <sip:51810401 at nyc-02.mydomain.net>;tag=892B04F3-2D3963A0.
Contact: <sip:51810402 at nyc-02.mydomain.net>.
Call-ID: 5a00cffc-a02c6e6d-59dbeb42 at 10.0.0.102.
CSeq: 480931435 NOTIFY.
User-Agent: Enswitch presence server.
Event: dialog.
Subscription-State: active;expires=119.
Content-Type: application/dialog-info+xml.
Content-Length: 379.
X-Enswitch-RURI: sip:51810401 at 203.144.218.9:5060.
X-Enswitch-Source: 203.144.218.9:46866.
.
<?xml version="1.0" encoding="UTF-8"?>
<dialog-info xmlns="urn:ietf:params:xml:ns:dialog-info" version="0"
state="full" entity="sip:51810402 at nyc-02.mydomain.net">
<dialog id="51810401" direction="recipient">
<state>terminated</state>
<local>
<identity>sip:51810402 at nyc-02.mydomain.net</identity>
</local>
<remote>
<identity></identity>
</remote>
</dialog>
</dialog-info>




U 2013/02/11 12:04:11.865256 67.198.80.143:22413 -> 203.144.218.9:5060
SIP/2.0 481 Call Leg/Transaction Does Not Exist.
Via: SIP/2.0/UDP 203.144.218.9;branch=z9hG4bK0509.b94f1f21.0.
Via: SIP/2.0/UDP 127.0.0.1;rport=46866;received=203.144.218.9.
From: <sip:51810402 at nyc-02.mydomain.net>;tag=13606022516209.
To: <sip:51810401 at nyc-02.mydomain.net>;tag=892B04F3-2D3963A0.
CSeq: 480931435 NOTIFY.
Call-ID: 5a00cffc-a02c6e6d-59dbeb42 at 10.0.0.102.
Record-Route: <sip:203.144.218.9;lr=on;ftag=13606022516209>.
Event: dialog.
User-Agent: PolycomSoundPointIP-SPIP_550-UA/3.3.3.0069.
Accept-Language: en.
Content-Length: 0.
.




U 2013/02/11 12:04:11.865428 203.144.218.9:5060 -> 203.144.218.9:46866
SIP/2.0 481 Call Leg/Transaction Does Not Exist.
Via: SIP/2.0/UDP 127.0.0.1;rport=46866;received=203.144.218.9.
From: <sip:51810402 at nyc-02.mydomain.net>;tag=13606022516209.
To: <sip:51810401 at nyc-02.mydomain.net>;tag=892B04F3-2D3963A0.
CSeq: 480931435 NOTIFY.
Call-ID: 5a00cffc-a02c6e6d-59dbeb42 at 10.0.0.102.
Record-Route: <sip:203.144.218.9;lr=on;ftag=13606022516209>.
Event: dialog.
User-Agent: PolycomSoundPointIP-SPIP_550-UA/3.3.3.0069.
Accept-Language: en.
Content-Length: 0.
.




U 2013/02/11 12:04:12.271287 127.0.0.1:5080 -> 203.144.218.9:5060
SIP/2.0 100 Trying.
Via: SIP/2.0/UDP 203.144.218.9;branch=z9hG4bK315.0ca86cc.0.
Via: SIP/2.0/UDP
10.0.0.102;rport=22413;received=67.198.80.143;branch=z9hG4bKe11f68b965DEA98.
From: "John Doe" <sip:51810401 at nyc-02.mydomain.net>;tag=892B04F3-2D3963A0.
To: <sip:51810402 at nyc-02.mydomain.net>.
Call-ID: 5a00cffc-a02c6e6d-59dbeb42 at 10.0.0.102.
CSeq: 2 SUBSCRIBE.
User-Agent: Enswitch SIP server.
Content-Length: 0.
.




U 2013/02/11 12:04:12.279134 127.0.0.1:5080 -> 203.144.218.9:5060
SIP/2.0 200 OK.
Via: SIP/2.0/UDP 203.144.218.9;branch=z9hG4bK315.0ca86cc.0.
Via: SIP/2.0/UDP
10.0.0.102;rport=22413;received=67.198.80.143;branch=z9hG4bKe11f68b965DEA98.
From: "John Doe" <sip:51810401 at nyc-02.mydomain.net>;tag=892B04F3-2D3963A0.
To: <sip:51810402 at nyc-02.mydomain.net>;tag=13606022526514.
Call-ID: 5a00cffc-a02c6e6d-59dbeb42 at 10.0.0.102.
CSeq: 2 SUBSCRIBE.
Expires: 120.
Contact: <sip:51810402 at nyc-02.mydomain.net>.
User-Agent: Enswitch SIP server.
Content-Length: 0.
.




U 2013/02/11 12:04:12.299347 203.144.218.9:35600 -> 203.144.218.9:5060
NOTIFY sip:51810401 at 203.144.218.9:5060 SIP/2.0.
Via: SIP/2.0/UDP 127.0.0.1.
From: <sip:51810402 at nyc-02.mydomain.net>;tag=13606022526514.
To: <sip:51810401 at nyc-02.mydomain.net>;tag=892B04F3-2D3963A0.
Contact: <sip:51810402 at nyc-02.mydomain.net>.
Call-ID: 5a00cffc-a02c6e6d-59dbeb42 at 10.0.0.102.
CSeq: 480931448 NOTIFY.
User-Agent: Enswitch presence server.
Event: dialog.
Subscription-State: active;expires=119.
Content-Type: application/dialog-info+xml.
Content-Length: 379.
.
<?xml version="1.0" encoding="UTF-8"?>
<dialog-info xmlns="urn:ietf:params:xml:ns:dialog-info" version="0"
state="full" entity="sip:51810402 at nyc-02.mydomain.net">
<dialog id="51810401" direction="recipient">
<state>terminated</state>
<local>
<identity>sip:51810402 at nyc-02.mydomain.net</identity>
</local>
<remote>
<identity></identity>
</remote>
</dialog>
</dialog-info>




U 2013/02/11 12:04:12.300172 203.144.218.9:5060 -> 67.198.80.143:22413
NOTIFY sip:51810401 at 10.0.0.102 SIP/2.0.
Max-Forwards: 10.
Record-Route: <sip:203.144.218.9;lr=on;ftag=13606022526514>.
Via: SIP/2.0/UDP 203.144.218.9;branch=z9hG4bK9509.edab2244.0.
Via: SIP/2.0/UDP 127.0.0.1;rport=35600;received=203.144.218.9.
From: <sip:51810402 at nyc-02.mydomain.net>;tag=13606022526514.
To: <sip:51810401 at nyc-02.mydomain.net>;tag=892B04F3-2D3963A0.
Contact: <sip:51810402 at nyc-02.mydomain.net>.
Call-ID: 5a00cffc-a02c6e6d-59dbeb42 at 10.0.0.102.
CSeq: 480931448 NOTIFY.
User-Agent: Enswitch presence server.
Event: dialog.
Subscription-State: active;expires=119.
Content-Type: application/dialog-info+xml.
Content-Length: 379.
X-Enswitch-RURI: sip:51810401 at 203.144.218.9:5060.
X-Enswitch-Source: 203.144.218.9:35600.
.
<?xml version="1.0" encoding="UTF-8"?>
<dialog-info xmlns="urn:ietf:params:xml:ns:dialog-info" version="0"
state="full" entity="sip:51810402 at nyc-02.mydomain.net">
<dialog id="51810401" direction="recipient">
<state>terminated</state>
<local>
<identity>sip:51810402 at nyc-02.mydomain.net</identity>
</local>
<remote>
<identity></identity>
</remote>
</dialog>
</dialog-info>




U 2013/02/11 12:04:12.321247 67.198.80.143:22413 -> 203.144.218.9:5060
SIP/2.0 481 Call Leg/Transaction Does Not Exist.
Via: SIP/2.0/UDP 203.144.218.9;branch=z9hG4bK9509.edab2244.0.
Via: SIP/2.0/UDP 127.0.0.1;rport=35600;received=203.144.218.9.
From: <sip:51810402 at nyc-02.mydomain.net>;tag=13606022526514.
To: <sip:51810401 at nyc-02.mydomain.net>;tag=892B04F3-2D3963A0.
CSeq: 480931448 NOTIFY.
Call-ID: 5a00cffc-a02c6e6d-59dbeb42 at 10.0.0.102.
Record-Route: <sip:203.144.218.9;lr=on;ftag=13606022526514>.
Event: dialog.
User-Agent: PolycomSoundPointIP-SPIP_550-UA/3.3.3.0069.
Accept-Language: en.
Content-Length: 0.
.




U 2013/02/11 12:04:12.321354 203.144.218.9:5060 -> 203.144.218.9:35600
SIP/2.0 481 Call Leg/Transaction Does Not Exist.
Via: SIP/2.0/UDP 127.0.0.1;rport=35600;received=203.144.218.9.
From: <sip:51810402 at nyc-02.mydomain.net>;tag=13606022526514.
To: <sip:51810401 at nyc-02.mydomain.net>;tag=892B04F3-2D3963A0.
CSeq: 480931448 NOTIFY.
Call-ID: 5a00cffc-a02c6e6d-59dbeb42 at 10.0.0.102.
Record-Route: <sip:203.144.218.9;lr=on;ftag=13606022526514>.
Event: dialog.
User-Agent: PolycomSoundPointIP-SPIP_550-UA/3.3.3.0069.
Accept-Language: en.
Content-Length: 0.

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