×

Call routing to wireless roamers in mobile telecommunication systems

  • US 5,724,658 A
  • Filed: 08/21/1995
  • Issued: 03/03/1998
  • Est. Priority Date: 08/21/1995
  • Status: Expired due to Term
First Claim
Patent Images

1. A method of serving a roaming subscriber in a telecommunications system comprising a plurality of wireless service carriers that serve a first geographic area and that can each communicate with at least one corresponding roaming subscriber in said first geographic area, and a wired exchange carrier that can communicate with said wireless service carriers and having access to a trunk providing communication between a second geographic area and said first geographic area, said method comprising:

  • assigning a distinct call routing parameter to each of said wireless service carriers;

    receiving at said wired exchange carrier via said trunk a call destined for one of said roaming subscribers, said call including a routing number corresponding to the roaming address of said one roaming subscriber and the call routing parameter corresponding to the wireless service carrier serving said one roaming subscriber;

    sending the call from said wired exchange carrier selectively to said serving wireless service carrier in response to said call routing parameter; and

    ,establishing a communication channel between said serving wireless service carrier and said one roaming subscriber in response to the said routing number, such that the same routing number is available for use by each of said wireless service carriers to route to its said corresponding subscriber a call selectively sent to it in response to its distinct call routing parameter.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×