TE405PE -> iWatsu PBX?

I have an iWatsu PBX with a spare PRI card. I am connecting that PRI card to an AsteriskNOW box that contains a TE405PE card. I can’t seem to find the configuration combination that will allow the card to connect to the iWatsu.

Can any point me in the right direction?

If it will help, this PRI card was originally connected to an Adtran so I’m guessing that the TE405pe needs to emulate the Adtran signaling. [shrug]

Thanks in advance!