Multiplex communications – Pathfinding or routing – Combined circuit switching and packet switching
Reexamination Certificate
2011-07-05
2011-07-05
Nguyen, Quynh H (Department: 2614)
Multiplex communications
Pathfinding or routing
Combined circuit switching and packet switching
C370S259000, C370S395210, C379S142160, C379S201010
Reexamination Certificate
active
07974271
ABSTRACT:
A system and method are disclosed for providing high quality sound communications in an IP Centrex environment. The method aspect of the invention comprises, from a network switch, negotiating between a first customer premises equipment (CPE) and a second CPE, the negotiation being related to a possible quality of a call between the first CPE and the second CPE. Next, the switch controls mapping between a dialing plan and a network address, determining a network address of the first CPE and the second CPE and connecting the call between the first CPE and the second CPE. In this manner, the highest quality and broadest bandwidth possible between the first CPE and second CPE through the IP Centrex environment may be used for the call.
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Barzegar Farhad
Gerszberg Irwin
Hill, Jr. Thomas W.
Mollica Scott Joseph
AT&T Intellectual Property II L.P.
Nguyen Quynh H
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