asterisk users - Nov 2009 - Prevent cell phone voice mail capturing call

Hi,

I've a DID number that gets passed to three internal phones and a cell
phone via my outbound IAX trunk. If the cell phone is off or out of
coverage, its voice mail captures the call.

What's the best way to avoid this? Is there a recommended way to force
the cell phone user to press 1 before the call is passed there ala
google voice? Or is there another way to detect the presence of the
answering machine rather than a human?

Thanks,

Russell.

You can dial the cell like this
Dial(DAHDI/1c/w5551212) instead of 
Dial(DAHDI/1/w5551212)
The 'c' makes the other end press 1 to start the call.

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Russell Horn
Sent: Thursday, November 05, 2009 2:45 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: [asterisk-users] Prevent cell phone voice mail capturing call

Hi,

I've a DID number that gets passed to three internal phones and a cell
phone via my outbound IAX trunk. If the cell phone is off or out of
coverage, its voice mail captures the call.

What's the best way to avoid this? Is there a recommended way to force
the cell phone user to press 1 before the call is passed there ala
google voice? Or is there another way to detect the presence of the
answering machine rather than a human?

Thanks,

Russell.

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Russell Horn wrote:
> Hi,
> 
> I've a DID number that gets passed to three internal phones and a cell
> phone via my outbound IAX trunk. If the cell phone is off or out of
> coverage, its voice mail captures the call.
> 
> What's the best way to avoid this? Is there a recommended way to force
> the cell phone user to press 1 before the call is passed there ala
> google voice? Or is there another way to detect the presence of the
> answering machine rather than a human?
> 
> Thanks,
> 
> Russell.
Require the cell phone user to press a button to accept the call (much 
the same way that the followme app does).