Patent ID: 8582560

Claim:
A method for establishing a call associated with a private dialing plan, the method comprising: receiving a call directed to a destination endpoint associated with a private dialing plan (PDP); requesting an internal egress path identifier; routing the call to a PDP call resolution service operable to determine the internal egress path identifier based at least in part on a dialed number in the call; responsive to the requesting, receiving the internal egress path identifier from a call resolution server associated with the destination endpoint, wherein receiving the internal egress path identifier comprises receiving the internal egress path identifier on a PDP-enabled trunk, wherein the internal egress path identifier is encoded in a message, and wherein a PDP telephone number corresponding to the destination endpoint is further encoded in the message; a core routing engine ignoring the PDP telephone number of the message and determining that the call should be routed according to a routing number; and routing the call to an egress path identified by the internal egress path identifier.