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Calling party identification device with message function

  • US 5,907,596 A
  • Filed: 02/15/1996
  • Issued: 05/25/1999
  • Est. Priority Date: 02/15/1996
  • Status: Expired due to Fees
First Claim
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1. A caller identification device comprising:

  • a line interface circuit coupled to a telephone line;

    a ring detector coupled to the telephone line, the ring detector detecting rings of an incoming telephone call, wherein said line interface seizes the telephone line when the ring detector detects a predetermined number of rings of the incoming telephone call;

    a line monitor coupled to the telephone line, the line monitor receiving an incoming telephone call signal from the telephone line while in an on-hook state;

    a dual tone multi-frequency generator coupled to the line interface circuit for generating dual tone multi-frequency signals on the telephone line;

    a VOX circuit coupled to the line monitor, the VOX circuit automatically detecting a presence of audible signals on the telephone line;

    a memory storing at least numeric information and at least one identifier representing a detection by the VOX circuit of the presence of audible signals on the telephone line;

    a caller identification detector coupled to the line monitor, the caller identification detector detecting caller identification information including at least a telephone number of a caller when the line monitor means receives the incoming telephone call signal; and

    a controller which controls the line interface circuit to re-seize the telephone line in response to a completed telephone call in which the caller identification detector has detected the caller identification information, for subsequently controlling the dual tone multi-frequency generator to dial a predetermined telephone number that is stored in the memory, and for then controlling the dual tone multi-frequency generator to transmit said at least numeric information over the telephone line, wherein transmission of said at least numeric information by the controller is paused until the VOX circuit ceases to detect the presence of audible signals on the telephone line for a predetermined period of time each time the at least one identifier is encountered.

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