Call Trace - SIP INFO Subscribe-Notify
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Example Trace
The following is an example call trace showing SIP Subscribe Notify for DTMF. Related lines have a "→" as a prefix.
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---> [10.129.55.74, 5060]
SUBSCRIBE sip:8519@10.129.55.80:5060 SIP/2.0
Via: SIP/2.0/UDP 10.129.55.74:5060
From: 7340 <sip:7340@10.129.55.74:5060>;tag=1
To: 8519 <sip:8519@10.129.55.80:5060>;tag=a94c095b773be1
dd6e8d668a785a9c84113d
Call-id: 1-2104@10.129.55.74
-> Cseq: 1 SUBSCRIBE
Contact: <sip:sipp@10.129.55.74:5060; transport=UDP>
-> Event: telephone-event;duration=300
Expires: 600
Content-Length: 0
18:17:08.733 SIP (W)
<--- [10.129.55.74, 5060 <- 10.129.55.80, 5060]
SIP/2.0 200 OK
Via: SIP/2.0/UDP 10.129.55.74:5060;received=10.129.55.74
Call-ID: 1-2104@10.129.55.74
From: 7340 <sip:7340@10.129.55.74:5060>;tag=1
To: 8519 <sip:8519@10.129.55.80:5060>;tag=a94c095b773be1
dd6e8d668a785a9c84113d
-> CSeq: 1 SUBSCRIBE
Server: Cantata-SIP/10.3.3.129 SIP-Gateway1 0
Expires: 600
Content-Length: 0
<--- [10.129.55.74, 5060 <- 10.129.55.80, 5060]
-> NOTIFY sip:sipp@10.129.55.74:5060 SIP/2.0
Via: SIP/2.0/UDP 10.129.55.80:5060; rport;branch=z9hG4bK- 5c5e-1163009828-19999-33
Call-ID: 1-2104@10.129.55.74
-> CSeq: 1 NOTIFY
Max-Forwards: 70
To: <sip:7340@10.129.55.74>;tag=1
From: <sip:8519@10.129.55.80>;tag=a94c095b773be1dd6e8d668a785a9c84113d
User-Agent: Cantata-SIP/10.3.3.129 SIP-Gateway1 0
-> Event: telephone-event;duration=300
Subscription-State: Active;expires=600
Content-Length: 0
18:17:08.753 SIP (W)
---> [10.129.55.74, 5060]
SIP/2.0 200 OK
Via: SIP/2.0/UDP 10.129.55.80:5060; rport;branch=z9hG4bK- 5c5e-1163009828-19999-33
From: <sip:8519@10.129.55.80>;tag=a94c095b773be1dd6e8d668a785a9c84113d
To: <sip:7340@10.129.55.74>;tag=1;tag=1
Call-ID: 1-2104@10.129.55.74
-> CSeq: 1 NOTIFY
Contact: <sip:10.129.55.74:5060; transport=UDP>
Content-Length: 0
NOTIFY sip:sipp@10.129.55.74:5060 SIP/2.0
Via: SIP/2.0/UDP 10.129.55.80:5060; rport;branch=z9hG4bK-d37-1163009863-19998-33
Call-ID: 1-2104@10.129.55.74
CSeq: 2 NOTIFY
Max-Forwards: 70
To: <sip:7340@10.129.55.74>;tag=1
From: <sip:8519@10.129.55.80>;tag=a94c095b773be1dd6e8d668a785a9c84113d
User-Agent: Cantata-SIP/10.3.3.129 SIP-Gateway1 0
-> Event: telephone-event;duration=300
Subscription-State: Active;expires=125
Content-Type: application/ dtmf-relay
Content-Length: 26
Signal= #
Duration= 160
18:17:43.893 SIP (W)
---> [10.129.55.74, 5060]
SIP/2.0 200 OK
Via: SIP/2.0/UDP 10.129.55.80:5060;rport;branch=z9hG4bK-d37-1163009863-19998-33
From: <sip:8519@10.129.55.80>;tag=a94c095b773be1dd6e8d668a785a9c84113d
To: <sip:7340@10.129.55.74>;tag=1;tag=1
Call-ID: 1-2104@10.129.55.74
-> CSeq: 2 NOTIFY
Contact: <sip:10.129.55.74:5060;transport=UDP>
Content-Length: 0