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Cordless telephone system with a private automatic branch exchange

  • US 5,259,017 A
  • Filed: 11/06/1991
  • Issued: 11/02/1993
  • Est. Priority Date: 04/04/1989
  • Status: Expired due to Fees
First Claim
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1. A cordless telephone system comprising a plurality of mobile sets and a plurality of base stations, the base stations being connected via subscriber lines to a private automatic branch exchange, several mobile sets of the plurality of mobile sets being allocated to one base station of the plurality of base stations and subscriber numbers of the private automatic branch exchange being allocated to the mobile sets, the subscriber numbers being convertible by the base stations into corresponding individual identifications of the mobile sets and the base stations being set up at different locations, radio cells of the base stations covering different areas and a current allocation of the mobile sets to the radio cells being stored in the private automatic branch exchange and an incoming call being transferred from the private automatic branch exchange to the base station in the radio cell of which the mobile set of the call subscribed is located, means for periodically exchanging the individual identification of the mobile sets with the base stations and means for utilizing a conventional facility of the private automatic branch exchange for updating the allocation.

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