Patent ID: 8605711
Filing Date: 2013-12-10
Classification: H04M

Abstract:
1. A method for supporting telephony services for use over a data network, the method comprising: determining presence of a dialing prefix of a call originating from a telephone network including a first switch and a second switch, wherein the dialing prefix specifies routing from the first switch to the second switch for treatment of the call, the first switch routing the call to the second switch via an initial address message (IAM) in a signaling channel; selectively routing the call from the second switch based upon the presence of the dialing prefix to a Session Initiation Protocol (SIP) gateway that interfaces with the data network, wherein the second switch queries an intelligent network control platform, which returns routing information for the SIP gateway, wherein the second switch sends an IAM message to the SIP gateway, and wherein the SIP gateway sends a SIP INVITE message to an appropriate SIP server; and forwarding the SIP INVITE message by the SIP server over the data network to an adapter device resident within a customer premise and coupled to a destination voice station, the adapter device configured to conduct SIP voice communication over the data network and configured to conduct voice communication over the telephone network.