[Asterisk-Users] Asterisk as a voicemail for a central office switch

Shane Burrell shaneb at metrostat.net
Wed Feb 23 19:51:58 MST 2005


* can be used in a CO switch.  As long as you can do DTMF interface.

 

  _____  

From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Matt Waterman
Sent: Wednesday, February 23, 2005 8:46 PM
To: Asterisk-Users at lists.digium.com
Subject: [Asterisk-Users] Asterisk as a voicemail for a central office
switch

 

I've spent the past several weeks reading up and playing around with
Asterisk while I've been waiting for an ISDN card I got on ebay to arrive so
I can really get to business. I'd just like to run my project ideaa by some
of you to hopefully get a little feedback. I aplogize if this ends up being
a somewhat long message.

 

In the Marine Corps we've somewhat recently started using Redcom IGX
switches in place of the proprietary (and ridiculously expensive) switches
that we've used in the past (well, and still do use). This opens the door to
all kinds of off-the-shelf equipment that we can interface with. My goal now
is to usefully integrate Asterisk primarily to provide voicemail and
autoattendant feature and probably to demonstrate various VOIP capabilities.
Ideally I would interface via a T1/E1 interface (might as well use E1 for
the extra channels) but since I don't want to shell out gobs of money for
what is at this point still a personal project, I'm opting for ISDN
connectivity. One interface for now will give me two channels but I'll get
another interface when I see more progress.

 

To my knowledge, the Redcom switch isn't specifically designed to be
interfaced with any voicemail systems. However, it can be set up to forward
calls on busy/no answer. This looks like it should be the ticket. I can set
a forward number for each phone to something like xxxxyyy where xxxx will
just tell the switch to follow a specific route to a group of ISDN channels.
Then it'll open an ISDN connection and pass on yyy (and whatever else is
needed) to Asterisk which could be used to identify the voicemail box
somehow. I guess I could set up any type of extension (SIP or IAX or
whatever) and since nobody would ever actually be connected to that
extension, Asterisk would automatically send it to voicemail every time. I
imagine autoattendant could be set up similarly.

 

My understanding of Asterisk is very.. limited at this point as I'm sure you
can tell. But does my above thinking seem doable? I imagine I'll figure it
all out eventually but any pointers that might speed up the process would be
greatly appreciated!

 

 

Matt

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