System, method, and computer-readable medium for by-passing the public switched telephone network when interconnecting an enterprise network and a carrier network

摘要

A system, method and computer-readable medium by-passing the public switched telephone network when routing a call from a carrier network to an enterprise network are provided. A carrier gateway server is communicatively coupled with an enterprise gateway server. The enterprise gateway server is adapted to publish direct inward dial numbers assigned to enterprise extensions to the carrier gateway server. Once published, call setups originated in the carrier network may be routed directly to an enterprise network having a terminal assigned the dialed number of the call setup. Advantageously, the carrier network operator does not incur any inter-connect fee from any public switched network operator.

主权项

1. A method of routing a call in a network system, comprising:
publishing a direct inward dial number as part of a record in a database in association with a domain of an enterprise network; generating, by a switching network, a call setup message that includes a dialed number; receiving the call setup message by a carrier gateway server deployed in a carrier network; interrogating, by the carrier gateway server, the database with the dialed number; and determining whether to perform at least one of route the call to the enterprise network by the carrier network in response to determining the dialed number matches the direct inward dial number and route the call to the public switched telephone network in response to determining the dialed number does not match the direct inward dial number.