Howto:Busy lamp field (partner keys) with SIP phones
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Applies To
This information applies to
- innovaphone PBX, v6
- SIP phones supporting "Dialog Package" according to RFC-4235
More Information
Example
The watched endpoint (207) receives a call from 211.
The watcher gets a NOTIFY request with a dialog info about the call in "early" state:
NOTIFY sip:snom@172.16.16.34:1415;line=ojn9itpa SIP/2.0 Via: SIP/2.0/UDP 172.16.16.180:5060;branch=z9hG4bK-311728BD;rport From: <sip:207@172.16.16.180;user=phone>;tag=2870350033 To: <sip:snom@172.16.16.180>;tag=bl4qd8azu6 Call-ID: 0ce2cb4794c2-9b374j1ddupd@snomSoft-000413FFFFFF CSeq: 18 NOTIFY Contact: <sip:207@172.16.16.180;user=phone> Content-Length: 343 Content-Type: application/dialog-info+xml Max-Forwards: 70 Event: dialog Subscription-State: active <?xml version="1.0"?> <dialog-info xmlns="urn:ietf:params:xml:ns:dialog-info" state="full" version="9"> <dialog id="1" direction="initiator" call-id="e1b50917e909d311824d0090330200d6"> <state>early</state> <local> <identity>sip:207@172.16.16.180</identity> </local> <remote> <identity>sip:211@172.16.16.180</identity> </remote> </dialog> </dialog-info> SIP/2.0 200 Ok Via: SIP/2.0/UDP 172.16.16.180:5060;branch=z9hG4bK-311728BD;rport=5060 From: <sip:207@172.16.16.180;user=phone>;tag=2870350033 To: <sip:snom@172.16.16.180>;tag=bl4qd8azu6 Call-ID: 0ce2cb4794c2-9b374j1ddupd@snomSoft-000413FFFFFF CSeq: 18 NOTIFY Content-Length: 0
After the call has been accepted by the watched endpoint (207), the former dialog info is cleared and a new dialog info is send to the watcher
NOTIFY sip:snom@172.16.16.34:1415;line=ojn9itpa SIP/2.0 Via: SIP/2.0/UDP 172.16.16.180:5060;branch=z9hG4bK-311728BE;rport From: <sip:207@172.16.16.180;user=phone>;tag=2870350033 To: <sip:snom@172.16.16.180>;tag=bl4qd8azu6 Call-ID: 0ce2cb4794c2-9b374j1ddupd@snomSoft-000413FFFFFF CSeq: 19 NOTIFY Contact: <sip:207@172.16.16.180;user=phone> Content-Length: 349 Content-Type: application/dialog-info+xml Max-Forwards: 70 Event: dialog Subscription-State: active <?xml version="1.0"?> <dialog-info xmlns="urn:ietf:params:xml:ns:dialog-info" state="full" version="10"> <dialog id="1" direction="initiator" call-id="e1b50917e909d311824d0090330200d6"> <state>terminated</state> <local> <identity>sip:207@172.16.16.180</identity> </local> <remote> <identity>sip:211@172.16.16.180</identity> </remote> </dialog> </dialog-info> NOTIFY sip:snom@172.16.16.34:1415;line=ojn9itpa SIP/2.0 Via: SIP/2.0/UDP 172.16.16.180:5060;branch=z9hG4bK-311728BF;rport From: <sip:207@172.16.16.180;user=phone>;tag=2870350033 To: <sip:snom@172.16.16.180>;tag=bl4qd8azu6 Call-ID: 0ce2cb4794c2-9b374j1ddupd@snomSoft-000413FFFFFF CSeq: 20 NOTIFY Contact: <sip:207@172.16.16.180;user=phone> Content-Length: 349 Content-Type: application/dialog-info+xml Max-Forwards: 70 Event: dialog Subscription-State: active <?xml version="1.0"?> <dialog-info xmlns="urn:ietf:params:xml:ns:dialog-info" state="full" version="11"> <dialog id="1" direction="initiator" call-id="e1b50917e909d311824d0090330200d6"> <state>proceeding</state> <local> <identity>sip:207@172.16.16.180</identity> </local> <remote> <identity>sip:211@172.16.16.180</identity> </remote> </dialog> </dialog-info> SIP/2.0 200 Ok Via: SIP/2.0/UDP 172.16.16.180:5060;branch=z9hG4bK-311728BE;rport=5060 From: <sip:207@172.16.16.180;user=phone>;tag=2870350033 To: <sip:snom@172.16.16.180>;tag=bl4qd8azu6 Call-ID: 0ce2cb4794c2-9b374j1ddupd@snomSoft-000413FFFFFF CSeq: 19 NOTIFY Content-Length: 0 SIP/2.0 200 Ok Via: SIP/2.0/UDP 172.16.16.180:5060;branch=z9hG4bK-311728BF;rport=5060 From: <sip:207@172.16.16.180;user=phone>;tag=2870350033 To: <sip:snom@172.16.16.180>;tag=bl4qd8azu6 Call-ID: 0ce2cb4794c2-9b374j1ddupd@snomSoft-000413FFFFFF CSeq: 20 NOTIFY Content-Length: 0
...
NOTIFY sip:snom@172.16.16.34:1415;line=ojn9itpa SIP/2.0 Via: SIP/2.0/UDP 172.16.16.180:5060;branch=z9hG4bK-311728C1;rport From: <sip:207@172.16.16.180;user=phone>;tag=2870350033 To: <sip:snom@172.16.16.180>;tag=bl4qd8azu6 Call-ID: 0ce2cb4794c2-9b374j1ddupd@snomSoft-000413FFFFFF CSeq: 22 NOTIFY Contact: <sip:207@172.16.16.180;user=phone> Content-Length: 349 Content-Type: application/dialog-info+xml Max-Forwards: 70 Event: dialog Subscription-State: active <?xml version="1.0"?> <dialog-info xmlns="urn:ietf:params:xml:ns:dialog-info" state="full" version="12"> <dialog id="1" direction="initiator" call-id="e1b50917e909d311824d0090330200d6"> <state>terminated</state> <local> <identity>sip:207@172.16.16.180</identity> </local> <remote> <identity>sip:211@172.16.16.180</identity> </remote> </dialog> </dialog-info> SIP/2.0 200 Ok Via: SIP/2.0/UDP 172.16.16.180:5060;branch=z9hG4bK-311728C1;rport=5060 From: <sip:207@172.16.16.180;user=phone>;tag=2870350033 To: <sip:snom@172.16.16.180>;tag=bl4qd8azu6 Call-ID: 0ce2cb4794c2-9b374j1ddupd@snomSoft-000413FFFFFF CSeq: 22 NOTIFY Content-Length: 0