Radio telephone apparatus

Details Radio telephone apparatus Radio telephone apparatus

Category

H - Electricity

Subcategory

04

Subsubcategory

B

CPC

325/30

IPC codes

H04B 1/16 (2006.01) H04Q 7/32 (2006.01)

Type

Patent

Patent number

CA 1307829

Description

RADIO TELEPHONE APPARATUS ABSTRACT OF THE DISCLOSURE Radio telephone apparatus for use in a cellular mobile tele- phone system comprises means for alarming at least a user operating the apparatus in response to a drop in signal strength of radio fre- quency signals received over an established communication channel when the apparatus approaches a boundary of service area in a cellu- lar mobile telephone system. The signal strength is repetitively checked to determine if it has fallen below a first predetermined sig- nal strength value. When the signal strength falls to or below a sec- ond predetermined signal strength value, the radio telephone appara- tus causes a disconnection of the telephone link and returns the appa- ratus to a standby mode.

Application Number

578734

Affiliated with

Also associated with

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