asterisk users - Apr 2006 - Config with TE210P, Asterisk and Legacy PBX and FreePBX?

Hi list!

Has anyone ever tried the following installation :

I want to replace our legacy PBX with Asterisk but... I still need the legacy 
PBX as a 'channel bank' for fax (I need E1 not T1)

I will put a dual port PRI card in the Asterisk box, and for incoming and 
outgoing faxes I want to use native bridging on the TE210P and route fax calls 
(based on DID and prefix when dialling) to / from the legacy PBX.

I guess I do not need to modify anything in the PBX (Alcatel Novo 
Supreme) because I can simply use dialling prefixes to catch outbound 
calls.

Does anyone have example config files how to implement this config?

This would be the setup :

PRI -> Asterisk <--> Legaxy PBX on TE210P
                  |-> SIP phones

Would it be possible to use FreePBX to setup such routing (inbound and 
outbound), if anyone could guide me in the basic direction for this I 
would be most grateful.

Thanks!!