Communication device

Details Communication device Communication device

2005-07-05

2005-07-05

Harold, Jefferey F. (Department: 2644)

Telephonic communications

Subscriber line or transmission line interface

C379S377000

Reexamination Certificate

active

06914981

ABSTRACT:
A communication device has a cut-off frequency switching unit for switching a cut-off frequency for communication data at a communication line, and a confirming unit for confirming whether or not a communication partner has the cut-off frequency switching unit, in advance of sending and receiving of communication data. The confirming unit is structured such that switching control of the cut-off frequency switching unit is carried out in accordance with results of confirmation.

REFERENCES:
patent: 6404774 (2002-06-01), Jenness
patent: 6477249 (2002-11-01), Williamson et al.
patent: 11-285035 (1999-10-01), None
patent: 11-308352 (1999-11-01), None

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