Data communication apparatus and data communication method

Multiplex communications – Pathfinding or routing – Combined circuit switching and packet switching

Reexamination Certificate

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C370S493000, C370S509000

Reexamination Certificate

active

10695943

ABSTRACT:
A data communication apparatus is provided with a VoIP processor and a modem that interchangeably executes a standard communication mode and a high-speed communication mode, the standard communication mode exchanging the voice packet at a predetermined transfer rate, the high-speed communication mode exchanging the voice packet at a rate faster than the rate of the standard communication mode. When capability information of an opposing apparatus is obtained, in accordance with a predetermined communication protocol, and it is detected that the opposing apparatus has the high-speed communication mode, the high-speed communication mode is selected for execution.

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patent: 5491720 (1996-02-01), Davis et al.
patent: 6195359 (2001-02-01), Eng et al.
patent: 6542472 (2003-04-01), Onuma
patent: 6792040 (2004-09-01), Davis et al.
patent: 6978000 (2005-12-01), Niiya
patent: 7072332 (2006-07-01), D'Souza
patent: 2002/0191639 (2002-12-01), Norby
patent: 2002/0194282 (2002-12-01), Saito et al.
patent: 2002-368815 (2002-12-01), None
English Language Abstract of JP 2002-368815. Dec 20, 2002.

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