Norstar integration via PRI

Does anyone in here know how to program a Norstar BCM unit to accept calls coming in over a PRI (cross over T1) from my asterisk server?

I don’t know where to start. Right now this is wha I have…

[ASTERISK SERVER] <==Crossover T1==> [NORSTAR BCM] <==>[phones]

How do I go about doing this?