I have a customer who was sold a Verizon FlexGrow from their old vendor. (and then went out of business). This vendor had put in an order for the Flexgrow IAD and had them purchase an Adtran 750. The Flexgrow will be replacing their 12 POTS lines.
Can anyone give me advice about using an Adtran 750 with a flexgrow or other type of PRI like line?
Will the Adtran work? Who decides where the DIDS will be on the the Adtran(which FXS) the telco or me? Besided a new block do I need anything else?

Hopefully I have posted in the correct forum.

Thanks,
JL