asterisk users - Oct 2010 - Asterisk sharing a line with POTS handsets: how to interoperate cleanly?

I now have an OpenVox A400P and it is working well. Thanks to Ade
Vickers for the recommendation, which I second.

However, I need to make a slow transition between a conventional
multiple-extension setup and a full VoIP network on these premises. So
at the moment the Asterisk box shares the PSTN connection with several
conventional analogue handsets.

The desired result for an incoming call is that the Asterisk server will
wait N seconds before answering (which I can arrange easily enough), and
if the call has been answered on one of the handsets by that time the
Asterisk server should ignore it completely. Otherwise it should start
checking CLID, prompting for extensions, and other good stuff, which
again I know how to do.

What is a good approach to making sure the Asterisk server doesn't pick
up a call that has been answered elsewhere? (Ideally in pure dialplan,
but a perl AGI would also do.)

R

On Tue, Oct 5, 2010 at 1:40 PM, Roger Burton West <roger at
firedrake.org>wrote:
> I now have an OpenVox A400P and it is working well. Thanks to Ade
> Vickers for the recommendation, which I second.
>
> However, I need to make a slow transition between a conventional
> multiple-extension setup and a full VoIP network on these premises. So
> at the moment the Asterisk box shares the PSTN connection with several
> conventional analogue handsets.
>
> The desired result for an incoming call is that the Asterisk server will
> wait N seconds before answering (which I can arrange easily enough), and
> if the call has been answered on one of the handsets by that time the
> Asterisk server should ignore it completely. Otherwise it should start
> checking CLID, prompting for extensions, and other good stuff, which
> again I know how to do.
>
> What is a good approach to making sure the Asterisk server doesn't pick
> up a call that has been answered elsewhere? (Ideally in pure dialplan,
> but a perl AGI would also do.)
>
> R
>
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I'd start with noting down what happens by default. Then you'll know
exactly
what behavior to target.

I was worried about similar issues with my SPA3102, but if I pick up a call
from a regular phone before it picks up, it just assumes the person on the
other end gave up. Also it wont pick up the line if it is in use.
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