Radio communication system and method for connecting an incoming call to a wireless telephone

• US 5,090,051 A
• Filed: 03/18/1991
• Issued: 02/18/1992
• Est. Priority Date: 02/22/1990
• Status: Expired due to Fees

• Current Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Lobel, Gary S., Shapiro, Steven C., Muppidi, Prabhakar
• Primary Examiner(s): Dwyer, James L.
• Assistant Examiner(s): Bost, Dwayne D.
• Application Number:
  US07/671,183
• Time in Patent Office: 337 Days
• Field of Search: 379/58-61, 379/63, 455/33, 455/54
• US Class Current: 455/410
• CPC Class Codes: H04W 76/10 Connection setup
• CPC Class Codes: H04W 84/022 One-way selective calling networks, e.g. wide area paging

Abstract

This radio communication system includes a plurality of remote base stations or callpoints. When an incoming call is to be directed to a cordless telephone, the identifying information for the cordless telephone, along with a call back number or ID is transmitted as by a paging signal by a PABX. Each of the base stations includes a paging receiver for receiving the information. If the base station has a line available it initiates a call to the cordless telephone. A base station that locates the cordless telephone would provide the connection for the call. By calling the PABX utilizing the call back ID, the base station can complete the call.

Claims

1. A method of connecting an incoming telephone call to a wireless telephone comprising the steps of:

at a central system;

receiving an incoming telephone call for a particular wireless telephone; and

transmitting a radio paging signal including ID information for the called wireless telephone and further including telephone line ID information; and

at a plurality of base stations;

receiving the transmitted radio paging signal ID information;

if a telephone line is available at the individual base station, selecting an available voice channel and transmitting a call to the called wireless telephone on said voice channel; and

if a response is received from the wireless telephone utilizing the telephone line ID information to provide a connection to the incoming telephone call.

2. A radio communication system for connecting radios to a telephone network comprising:

a plurality of portable radio units;

a plurality of base stations for selectively interconnecting said portable radio units to the telephone network;

a central system for receiving incoming telephone calls and for transmitting radio paging signals including ID information for called portable radio units and further including telephone ID information to the plurality of base stations;

the base stations each including means for receiving the transmitted radio paging signal ID information and means for determining if a telephone line is available, each base station transmitting a call to the called portable radio unit on a voice channel only if a telephone line is available, and further including means utilizing the telephone ID information for selectively interconnecting said portable radio units to incoming telephone calls.