Terminal device for network system
First Claim
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1. A terminal device for a network system in which a predetermined signal representing a predetermined data is inserted during a silent period between intermittent ringing signals, said terminal device comprising:
- detecting means for detecting one of a beginning and an end of said ringing signal;
receiving means for receiving said predetermined signal; and
controlling means for commencing said receiving means to be ready to receive said predetermined signal upon detection of one of said beginning and said end of said ringing signal by said detecting means.
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Abstract
There is provided a terminal device for a network system. The terminal device is capable of receiving a predetermined signal representing a predetermined data which is inserted during a silent period between intermittent ringing signals. The terminal device includes a ringing signal detecting circuit and a signal receiving circuit. The signal receiving circuit is commenced to be ready to receive the predetermined signal upon detection of the ringing signal by the ringing signal detecting circuit.
23 Citations
19 Claims
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1. A terminal device for a network system in which a predetermined signal representing a predetermined data is inserted during a silent period between intermittent ringing signals, said terminal device comprising:
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detecting means for detecting one of a beginning and an end of said ringing signal; receiving means for receiving said predetermined signal; and controlling means for commencing said receiving means to be ready to receive said predetermined signal upon detection of one of said beginning and said end of said ringing signal by said detecting means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification