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Selective screening of incoming calls for cellular telephone systems

  • US 5,473,671 A
  • Filed: 03/11/1994
  • Issued: 12/05/1995
  • Est. Priority Date: 03/11/1994
  • Status: Expired due to Term
First Claim
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1. A method of selective cellular telephone call switching for use with a telephone call switching device and comprising the steps of:

  • (a) maintaining a list of one or more caller identities in a memory in a cellular telephone, each caller identity corresponding to one or more potential incoming telephone calls directed to the cellular telephone, each incoming telephone call having a ringing signal;

    (b) assigning each of the caller identities stored in the memory with a call switching destination selecting at least one of (1) the cellular telephone, and (2) an alternate switching destination different from the cellular telephone;

    (c) upon receipt of an incoming telephone call ringing signal directed to the cellular telephone, identifying any caller identity corresponding to the incoming telephone call, such caller identity comprising an incoming caller identity; and

    (d) upon identification of an incoming caller identity, the cellular telephone sending a call routing message to the telephone call switching device such that the telephone call switching device connects the incoming telephone call to the call switching destination assigned to the incoming caller identity, thereby selectively rerouting the incoming telephone call.

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