Incoming DID trunk with FXO/FXS

I’d like to set up a FAX solution at a client site using an Incoming DID trunk. They presently have a BrookTrout fax card.

This type of service from the telco appears to be pretty rare. It’s essentially a POTS line with DIDs that you can’t make outgoing calls on.

My FXO/FXS device would need to recognize both the DID and the CID. What signaling settings would I use with such a thing? Does Zap provide for this type of provisioning?