Pulse or digital communications – Transceivers – Modems
Reexamination Certificate
2005-06-21
2005-06-21
Bayard, Emmanuel (Department: 2631)
Pulse or digital communications
Transceivers
Modems
Reexamination Certificate
active
06909740
ABSTRACT:
A communication control apparatus of the present invention detects a procedure signal transmitted from a calling side from signals received in reception section while or after a transmission section, which transmits procedure signals specified in the predetermined Recommendation, transmits a DIS signal specified in Recommendation T.30 or a procedure signal used in a data communication. Then, the apparatus shifts to a communication operation conforming to Recommendation V.8 when the detected procedure signal is a CM signal specified in Recommendation V.8, while shifting to a data communication operation when the detected signal is the procedure signal used in the data communication. Thus, the present invention enables the apparatus to shift to the communication operation corresponding to the detected procedure signal, and therefore it is possible to assuredly prevent the apparatus from causing the looped condition thereof.
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English Language Abstract of JP 61-186070.
English Language Abstract of JP 8-79483.
English Language Abstract of JP 8-56241.
English Language Abstract of JP 11-88632.
English Language Abstract of JP 9-116718.
Bayard Emmanuel
Greenblum & Bernstein P.L.C.
Panasonic Communications Co. Ltd.
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