Linksys SPA-841 Cisco SPA9000 Voice System Administration Guide - Page 184
Subscribing to Voicemail Notification - sipura
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Advanced Topics in SPA9000 Administration Advanced Topics for SPA400 Voice Mail Service A Subscribing to Voicemail Notification The SPA9000 sends a one-time SUBSCRIBE for the message-summary event package for each line with a valid . The SUBSCRIBE implies subscription for the status of all the mailboxes associated with the voicemail account used-ID; it does not include any mailbox ID in the request. Following is an example: SUBSCRIBE sip:mailbox-subscribe-url SIP/2.0 Via: SIP/2.0/UDP 172.16.22.23:5062;branch=z9hG4bK-44f9d0f0 From: Line 3 ;tag=ac6013983cce7526 To: Call-ID: [email protected] CSeq: 63017 SUBSCRIBE Max-Forwards: 70 Contact: Expires: 30 Event: message-summary User-Agent: Sipura/SPA9000-3.2.2 Content-Length: 0 The voicemail server is expected to send a NOTIFY immediately upon receiving this SUBSCRIBE message for each mailbox on this account. The Request-URI of the NOTIFY should reference the CONTACT header of the corresponding SUBSCRIBE, but the user-ID in the To header should be the mailbox ID. The following example shows a NOTIFY for the mailbox ID 5031 on the account 14089991003: NOTIFY sip:[email protected]:5062 SIP/2.0 Via: SIP/2.0/UDP 178.178.221.230;branch=z9hG4bK-44f9d0f0 From: ;tag=ab789 To: ;tag=ac6013983cce7526 Call-ID: [email protected] CSeq: 537 NOTIFY Expires: 30 Event: message-summary User-Agent: ITSP/Voicemail-Server Content-Length: 0 Messages-Waiting: yes Voice-Message: 2/8 (0/2) NOTE Note that SPA9000 does not require the NOTIFY to be sent within the same subscription dialog. That is, it accepts the NOTIFY even without a TO-tag or a matching Call-ID as the original SUBSCRIBE. SPA9000 Voice System Administration Guide 182