Howto:Busy lamp field (partner keys) with SIP phones

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