wardmundy My pbx is at Rentpbx and I have not encountered any wrinkles yet. I will give it a try with 10 digit dialing and an outbound route. With appropriate settings in the extension setup you can use whatever callerID you want for the phone. Pretty nifty. My only real complaint is the Sprint 3g service is so slow as to be nearly unusable. If they come out with a phone with LTE, this service will be incredible.