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Trunked communication system with nationwide roaming capability

  • US 4,833,701 A
  • Filed: 01/27/1988
  • Issued: 05/23/1989
  • Est. Priority Date: 01/27/1988
  • Status: Expired due to Term
First Claim
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1. A method for a subscriber unit to roam from a first trunked communication system to a second trunked communication system, comprising the steps of:

  • (a) determining that communication with said first trunked communication system has been lost;

    (b) requesting an identification code from said second trunked communication system; and

    (c) operating, thereafter, in said second trunked communication system under said identification code unit communication with said second trunked communication system is lost.

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