At&t Labs, Inc.

Gary Jonathan Gibbons

Matthew Wayne Stafford

Weijing Chen

Haifeng Bi

Bruce Allen Nance

George C Allen, Jr

Tina M Sigarto

Barbara Smith

Mehran Esfandiari

Paul August Kaschube

John Pinch

George Anthony Young

Randy Beamon

Janice Elaine Doerner

A system and method for reducing and surviving failures in a voice trunking over ATM (VTOA) environment includes an ATM network having a plurality of interconnected ATM switches. The VTOA system also includes a CS-IWF complex having a plurality of interconnected CS-IWF units, each unit having a plurality of processors. An end office building may also be provided for interaction with the VTOA system. The end office building includes multiple T-IWFs, and a switch that distributes calls among the T-IWFs in a load sharing manner. Each T-IWF has a plurality of processors and is part of the VTOA system. A switch management system is also provided in the VTOA system. In order to reduce and survive failures, the switch management system includes a plurality of switch management system units. At least one of the switch management system units is a backup unit for at least one primary switch management system unit. Each switch management system unit provides application redundancy within itself.

Fault tolerant virtual tandem switch

Growing community of inventors

San Antonio, TX, United States of America

Gary Jonathan Gibbons