Simple. Buy two asterisk servers, one server has a t1 card in it that handles the 12 lines and the 12 Data channels. That leaves you with buying one digium card instead of a mess of channel banks, fxs/fxo cards, etc.

To send calls to the other asterisk server use IAX
As far as fxs/fxo you might want to buy one tdm400 with three fxs and one fxo so you can emulate dialtone to fax machines , etc...


The big question is...Are your end point phones going to be IP phones?

Brian

Craig Neumanns wrote:

Hello,
I will be setting up two asterisk systems and I'm looking for some suggestions as to what the best way to do this will be.
The 2 systems are for 2 companies that share a single T1 line. The T1 line has 12 voice channels and 12 data channels.
Currently, they are set-up as follows:
T1 line from provider enters CSU/DSU and splits voice/data channels. The voice channels are sent to an ADIT 600 w/ 4 FXS cards. The ADIT 600 then breaks down the T1 voice channels into analog lines, of which 8 are fed into one phone system and 4 are fed into the other phone system.
I have been thinking about throwing in 2 more ADIT 600s with the appropriate number of FXO and FXS ports each and interfacing them with a Digium T100P card on each phone system, but this seems to be a bit cost prohibitive. I am wondering what the best way to interface the current lines with Asterisk will be?
Thanks!
Craig


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