Patent ID: 7539494

Claim:
A method for facilitating call routing in an enterprise having a first site capable of connecting to a second site in the enterprise through a network associated with the enterprise, the network operating according to a network protocol, the method comprising: registering at least a first plurality of identifiers and a first site identifier associated with the first site with an inter-site router operating in accordance with a protocol compatible with the network protocol and operating in the enterprise; and routing a call request received at a second site to the inter-site router directly over the network as the first site and the second site are not capable of being connected through the network and wherein the call request is routed in accordance with the network protocol and the protocol compatible with the network protocol when an identification number associated with the call request is not recognized at the second site such that the inter-site router can forward the call request from the second site and directly route the call to the first site using the first site identifier when the identification number associated with the call request matches one of the first plurality of identifiers.