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Self-diagnostic system for cellular-transceiver systems

  • US 5,469,494 A
  • Filed: 03/02/1994
  • Issued: 11/21/1995
  • Est. Priority Date: 03/02/1994
  • Status: Expired due to Term
First Claim
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1. In a cellular, or cellular-like, transceiver apparatus comprising a cellular, or cellular-like, transceiver, a cellular, or cellular-like, interface unit, and a standard, land telephone or telephone-like communications-device coupled to said cellular, or cellular-like, transceiver, said interface unit converting DTMF or pulse-type of dialing signals into digital format for sending to said cellular, or cellular-like, transceiver, whereby the dialed number made on the standard, land telephone or telephone-like communications-device may be used to call a number over the cellular, or cellular-like, system, the improvement comprising:

  • auto-diagnostic means for monitoring and reporting the proper functioning of said cellular, or cellular-like, transceiver and said cellular, or cellular-like, interface unit;

    means for alternately coupling said auto-diagnostic means to said cellular, or cellular-like, interface unit;

    said means for alternately coupling said auto-diagnostic means comprising means for uncoupling the connection of said standard, land telephone or telephone-like communications-device from said cellular, or cellular-like, interface unit when said auto-diagnostic means is coupled to said cellular, or cellular-like, interface unit;

    said auto-diagnostic means comprising means for simulating the functions performed by said standard, land telephone or telephone-like communications-device for generating in said cellular, or cellular-like, interface unit respective, corresponding responses in said cellular, or cellular-like, interface unit, in order to determine if said cellular, or cellular-like, interface unit is operating correctly.

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