Subscribing To Voicemail Notification - Linksys SPA9000 Administrator's Manual

Chapter 3 Configuring Voice Service and Voicemail
In the above example, the station wanting to deposit voicemail is at extension 5031; the mailbox ID is
7675 on the account 37683101 (for the station at extension 5041). Note that the referrer is the same as
the caller in the last INVITE. In other words, this INVITE is self-triggered by the SPA9000.
If an EXT-To-DID mapping exists for the calling extension on the line interface, the user-ID and display
name fields of the FROM header is replaced by, respectively, the mapped DID number and the display
name assigned to the phone. Furthermore, if an EXT-To-DID mapping exists for the called phone, the
user-ID field of the REFERRED-BY header is also replaced by the mapped DID number for the called
extension.
Note
For information about how to add an EXT-to-DID mapping, see the <Contact List> parameter in
Chapter 6, "SPA9000 Field Reference"

Subscribing to Voicemail Notification

The SPA9000 sends a one-time SUBSCRIBE for the message-summary event package for each line with
a valid <Mailbox Subscribe URL>. 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:
Note that the Expires value is purposely set to a very large number so the subscription does not expire
and there is no need to renew the subscription. 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:
Document Version 3.01
To: <sip:mailbox-deposit-url>
Call-ID: 69e9e3d9-cfcbe2bb@172.12.244.56
CSeq: 101 INVITE
Max-Forwards: 70
Contact: <sip:37683101@172.12.244.56>
Referred-By: <sip:37683101@sip.myitsp.com>;mbid=7675
SUBSCRIBE sip:mailbox-subscribe-url SIP/2.0
Via: SIP/2.0/UDP 172.16.22.23:5062;branch=z9hG4bK-44f9d0f0
From: Line 3 <sip:14089991003@sip.myitsp.com>;tag=ac6013983cce7526
To: <sip:mailbox-subscribe-url>
Call-ID: ace86200-bbe839de@172.16.22.23
CSeq: 63017
SUBSCRIBE Max-Forwards: 70
Contact: <sip:14089991003@172.16.22.23:5062>
Expires: 2147483647
Event: message-summary
User-Agent: Sipura/SPA9000-3.2.2
Content-Length: 0
NOTIFY sip:14089991003@172.16.22.23:5062 SIP/2.0
Via: SIP/2.0/UDP 178.178.221.230;branch=z9hG4bK-44f9d0f0
From: <sip:voicemail@sip.myitsp.com>;tag=ab789
To: <sip:5031@172.16.22.23:5062>;tag=ac6013983cce7526
Call-ID: ace86200-bbe839de@178.178.221.230
CSeq: 537
NOTIFY Expires: 2147483647
Event: message-summary User-Agent: ITSP/Voicemail-Server
Content-Length: 0
Messages-Waiting: yes
Managing Voicemail
Linksys SPA9000 Administrator Guide
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