Multiplex communications – Communication techniques for information carried in plural... – Adaptive
Reexamination Certificate
2006-04-25
2006-04-25
Sam, Phirin (Department: 2661)
Multiplex communications
Communication techniques for information carried in plural...
Adaptive
C370S401000, C370S469000
Reexamination Certificate
active
07035282
ABSTRACT:
Wideband telephones, gateways, adapters, software, and methods are provided for implementing wideband telephony over a network. A WB IP telephone has a WB telephone, a codec for encoding voice into voice data bits, and a packetizer for encoding groups of the voice data bits in intermediate packets. An adapter for an analog WB telephone has a digital to analog converter, a codec and a packetizer. The intermediate packets are generally not in form that would be ready for network transmission. The WB IP telephone also includes a modem for connecting to the network over a telephone line. A voice gateway receives the encoded voice, and adds packet headers to it, to make it suitable for transmission through the network to a cooperating gateway. The cooperating gateway in turn strips the headers for the receiving WB IP telephone. The WB IP telephones can thus be connected to the network using only PSTN lines.
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Jagadeesan Ramanathan
Nguyen Bich
Cisco Technology Inc.
Marger & Johnson & McCollom, P.C.
Sam Phirin
LandOfFree
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