Passport 7480 MUX/Caller ID on outbound

[macaodha]

I generally work on the PBX side of things and stay away from the Passport side of the house, so forgive my ignorance. A vendor of ours is setting up a Passport 7480 to send outbound calls via a PRI line. This device is set up to allow offshore staff to make calls via a PRI terminated in the U.S. We need a specific number shown on outbound calls, so that customers can call us back at that number if necessary. Since this is a PRI interface, I have to believe that we can determine the CLID shown on outbound calls.

I have access to Nortel NTPs but I could not find any reference to this anywhere. Can anyone tell me if this is possible, and what is needed to accomplish this?

Thanks,

Michael