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Personal handy phone system

  • US 5,818,918 A
  • Filed: 05/31/1996
  • Issued: 10/06/1998
  • Est. Priority Date: 06/01/1995
  • Status: Expired due to Fees
First Claim
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1. A personal handy phone system comprising a private branch exchange network including a private branch exchange connected to a public PHS network and a private PHS base station connected to said private branch exchange, wherein said private PHS base station comprises:

  • first transmit/receive means for intermittently transmitting and receiving a first control signal having a first frequency in a predetermined cycle and at a predetermined interval; and

    second transmit/receive means for intermittently transmitting and receiving a second control signal having a second frequency different from said first frequency in said predetermined cycle and at said predetermined interval when said first control signal is neither transmitted nor received.

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