Cordless telephone

• US 5,687,218 A
• Filed: 01/24/1994
• Issued: 11/11/1997
• Est. Priority Date: 02/15/1990
• Status: Expired due to Fees

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Nakayama, Toru
• Primary Examiner(s): Bost, Dwayne
• Assistant Examiner(s): TROST IV, WILLIAM GEORGE
• Application Number:
  US08/185,228
• Time in Patent Office: 1,387 Days
• Field of Search: 379/61, 379/62, 379/58, 379/59, 379/63, 455/54.1, 455/54.2
• US Class Current: 455/415
• CPC Class Codes: H04M 1/642 storing speech in digital form
• CPC Class Codes: H04M 1/727 Identification code transfer arrangements
• CPC Class Codes: H04M 1/733 with a plurality of base stations connected to a plurality of lines for selection in cordless PBX H04W84/16

Abstract

A cordless telephone connected through a radio line to a master unit enclosing a telephone line comprises: a receiver to receive a radio signal; a memory to store a plurality of ID numbers; and a speaker which rings when the ID number received by the receiver coincides with either one of the ID numbers stored in the memory. The speaker has a display to display the coincident ID number. With the apparatus of the invention, the operator can make a speech of monitor an absence recorded message by a slave unit at a remote position away from the master unit by certainly recognizing the called slave unit through a monitor sound or an indication lamp.

Claims

1. A cordless communication system comprising a plurality of base units and a remote unit,

wherein the plurality of base units include manual requesting means for generating registration requests in accordance with a manual operation at the plurality of base units, and transmit identification data in accordance with registration requests and call data including the identification data in accordance with generation of a call, and

the remote unit receives and registers the identification data from the plurality of base units in a registration mode, and displays such that each of states of the plurality of the base units is distinguishable based on the identification data included in the call data from the plurality of base units and the registered identification data.

2. A system according to claim 1, wherein the remote unit receives the identification data as a radio signal.

3. A system according to claim 1, wherein the remote unit displays at least busy/idle states of the plurality of base units.

4. A system according to claim 1, wherein the remote unit has selecting means for selecting one of the plurality of base units.