Clarence C Wong

US Patent:

20080279344, Nov 13, 2008

Filed:

Mar 24, 2008

Appl. No.:

12/079056

Inventors:

Jonathan Echt - Chicago IL, US
Yosef Klein - Skokie IL, US
Zvie Liberman - Lincolnwood IL, US
Samuel Shanes - Highland Park IL, US
Clarence Wong - Chicago IL, US
Sam Sangani - Hanover Park IL, US
Saumil Makim - Algonquin IL, US
Ashok Hirpara - Carol Stream IL, US

International Classification:

H04M 11/04

US Classification:

379 45

Abstract:

An emergency telephone system has a dual mode, hybrid emergency telephone station connected with a central station through both a digital ethernet connection for digital VOIP communication and through a wire line for analog communication. Circuitry at the dual mode emergency station connects a user terminal with the digital ethernet connection and the wire line. A processor forming a part of the circuitry directs communication through the ethernet connection if operative and through the analog wire connection if the ethernet connection is inoperative.