[Asterisk-Users] PRI in and out

[El Flynn]

Rod Bacon wrote:
> I am wanting to front-end a legacy PBX with an asterisk box. I have done 
> plenty of asterisk work over the last 6 months to PRI circuits, but not 
> with a PBX being involved.
> 
> I know I can use asterisk and digium cards in this manner, but do I need 
> separate cards for the PRI -> Asterisk side to the Asterisk -> PBX side, 
> or will a 4-port PRI card do the job? (I already have a spare one of 
> these).
> 

Short -- yes, can be done.

We just did one install with two incoming E1s connected to ports 1 and 2 on a 
Sangoma A104, and ports 3 and 4 were outgoing to an Avaya PABX.

> In other words, can I use SPAN 1 as a timing source, then provide timing 
> to the PBX connected to SPAN 2 of the same card?
> 

That should do it. You'd just need to configure zaptel.conf properly. There's an 
example somewhere on the Wiki about integrating Asterisk with legacy systems.

Cheers,
Flynn