Modem apparatus, communication control apparatus, communication terminal apparatus, and communication control method
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United States of America Patent
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Jun 10, 2003
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N/A
app pub date -
Mar 10, 2000
filing date -
Jun 2, 1999
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Abstract
In the present invention, when a procedure signal specified in a predetermined Recommendation is received from an answering side, a variable signal detection section detects signal components each at one of a plurality of frequencies from the procedure signal. Based on the detected result in the variable signal detection section, a comparison section outputs an identification signal indicative of a type of Recommendation. Based on the identification signal, a control section of a host controls the switching of operation modes of a modem.
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