Patent ID: 7251317

Claim:
A method for making a call that is billed to a subscriber's telephone account, comprising: receiving a request to make the call from a non-PSTN network; initiating a first leg of the call to a caller device based on the request; initiating a second leg of the call to a receiver device based on the request; specifying the subscriber's number in a setup message for the second leg of the call; sending a query message when the setup message triggers a setup trigger, the query message containing the subscriber's number and at least one of a calling party identification and a charge number; sending a response message containing the subscriber's number substituted in the at least one of the calling party identification and the charge number; connecting, over a PSTN, the first leg and the second leg to make the call between the caller device and the receiver device; and billing the call to the subscriber's telephone account on the PSTN.