[asterisk-users] Voicemail MWI

[Race Vanderdecken]

I did write some code once that worked but was not used in the end. The
customer did a very clever and elaborate solution that did not involve
asterisk.

In the code when a call came in the local asterisk server would talk to
a server on a socket on the main voicemail machine. 

The local/client code would redirect the MWI counter code to read from
the main server socket instead of the local file system.  The server
side socket used similar asterisk code to count the messages on the
remote server instead of on the local asterisk server.

Then the normal asterisk code would trip the MWI light.

The server address and whether to use the remote voicemail server
counter were in the vm.conf file.

It could handle about 500 queries per second without much cpu time.

It was built back under the 1.2 or 1.1 code base, so it might not work
under the 1.4 code base(which I have not looked at yet.)

Race Vanderdecken
Code Tyrant
Somewhere near Asheville, NC.
 

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Douglas
Garstang
Sent: Friday, October 06, 2006 1:49 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: [asterisk-users] Voicemail MWI

I'd like to know if anyone has a suggested fix for this...

You have a 'cluster' of Asterisk servers that use DUNDi etc for
registration redundancy, finding other phones etc. You have a separate
Asterisk box for voicemail. For voicemail deposit/retrieval you trunk
the call over to the voicemail server. This all works fine. No issues
there.

What about MWI though? Your phones register with the cluster, not with
the voicemail server, and therefore the voicemail server has no
knowledge of where the phones are and therefore cannot send out SIP
NOTIFY messages to phones.

This is a general architectural problem with Asterisk. Has anyone solved
it? Are the developers working on fixing problems like this for 1.6?

Doug.
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