Yes, I'd check on the Polycom documentation. However---you know that you DO have to treat that SIP phone as a SIP phone in the Allworx programming and set it up to ring, and set up User, Extension, Handset parameters---just like any other SIP or Allworx phone. Without doing that, of course, the phone is just a lump of plastic & solder.

Who does the programming on a deal like that? Paetec or you?? Or does Paetec just supply you with the equipment?

We get all of our support from our vendors. They are excellent. Without them, I would not be selling & installing the Allworx.