Patent ID: 6765903
Filing Date: 2004-07-20
Classification: H04J,H04L,H04M,H04Q

Abstract:
An Asynchronous Transfer Mode (ATM) based distributed network switching system (ADNSS), comprising:a distributed ATM switching network; a plurality of line access interworking function (LA-IWF) devices each operating as a gateway directly interfacing customer premises devices into the distributed ATM switching network, the LA-IWF interfacing with one of a two wire and a four wire loop customer premises device that provide POTS, ISDN, Coin and xDSL telephony services; a centralized control and signaling interworking function (CS-IWF) device that performs call control functions and administrative functions and interfaces narrowband and broadband signaling for call processing and control within the ATM switching network, the CS-IWF comprising a server farm comprising a signaling gateway that interfaces the CS-IWF to a narrowband network, a billing server that creates and collects call detail records for call attempts through the ADNSS, and a feature server comprising a system management server that performs operations, administration, maintenance, and provisioning (OAM&P), a call control server that performs call control functions and device control functions for the LA-IWFs, the call control server supporting services and features supported by a telephone switch; and a tone and announcement server that provides telephone network tones and announcements; wherein the ADNSS replaces a standard network backbone and allows a plurality of access types to interface into the ATM switching network.