Depends on the circuit. I have run into a lot of new PRIs, usually the Voice/Data package, as they are sometimnes called Smart voice or Flex PRI, that will only let you push out a DID on that circuit.

Typically that isn't a restriction they put up, but a limitation. Most of the communication behind the voice PRI is SIP.

Basically if you are connecting to an Adtran or a Cisco providing your PRI, then chances are not good you can push anything other then a DID out.