[Asterisk-Users] integrating with existing PBX

[Andrew Kohlsmith]

On Monday 21 June 2004 15:19, Florin Andrei wrote:
> Any high-level guidelines on how to integrate Asterisk with a PBX that's
> already in use? Probably that particular PBX is not supported directly,
> but are there ways to somehow hook-up to it and route calls from IP to
> PBX or back?

Depending on the number of trunk lines you need and whether you can do digital 
trunk interfacing: A T1 card (T100P or TE405P) and if you can't do ct1/PRI 
into your phone system: an FXS channel bank.  I recommend the Adit600 
personally but YMMV.

I recommend the channel bank over using the TDM400P with FXS ports as I have 
found through my use of the TDM400P at home (3 ports) that the channel banks 
are by and large more stable and have better voice quality, although it's a 
fine line.

I'm doing the T100P+Adit600 route on a few Norstart MICS systems right now, 
and will be converting one of htem to a PRI interface and ditching the 
channel bank to save on wiring and also to experiment with some DID/CLID 
experiments with the Norstar system.

Regards,
Andrew