[Asterisk-Users] T1 passthrough/middleman

[Nathan Bell]

Is it possible to act as a middle man on a T1 line?

My installation currently has an aging Inter-Tel Axxess box with a T1 
coming in (16 in, 8 out). Rather than adding and replacing phones and 
cards as they die, I would like to slowly migrate to a asterisk SIP 
installation.

I want to take the incoming T1 line, use any available outgoing lines 
for outgoing SIP, intercept any incoming lines and either send them off 
to a SIP line or pass them through to other T1 line (going to the Axxess 
box), and finally take in outgoing calls from the Inter-Tel box and 
either send them to SIP or send them to the outside T1 line.

How will a dual T1 card be set up in this situation? Would it be easier 
to use an FXO channel bank (or card) and connect analog lines to the FXS 
analog lines on the Inter-Tel box?