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Patent Searching and Data


Title:
CALLOUT COMMUNICATION SYSTEM
Document Type and Number:
Japanese Patent JPS57212834
Kind Code:
A
Abstract:

PURPOSE: To perform direct call without a pocket bell terminal device carrier and any operator, by providing a callout response outgoing trunk which converts a DP signal into a PB signal for a subscriber exchanger.

CONSTITUTION: A callout response controlling exchanger 1 is connected to subscriber exchangers 2 and 7 and an antenna 6 via relay exchangers 4 and 9 and a radio callout controlling station 5. Further, a caller dials an instruction code and a callout number indicating the callout with a telephone set 3. When the telephone set 3 dials the number of the caller, this signal is converted into a PB signal via a callout response outgoing trunk 2d and this signal is received at a receiver 1b. The controller 1b transmits the pocket bell number to a control station 5. When a called party response from a telephone set 8, the controller 1b indexes the number of caller and calls out the telephone set 3 with an exchanger 2 to connect the telephone set 8.


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Inventors:
IZUMI NATSUKI
KOYAMA MINORU
KAMISAKA KIYUUICHI
HAMADA YASUAKI
Application Number:
JP9883481A
Publication Date:
December 27, 1982
Filing Date:
June 25, 1981
Export Citation:
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Assignee:
NIPPON TELEGRAPH & TELEPHONE
International Classes:
H04M3/42; H04M11/02; H04W4/16; H04W4/24; H04W84/02; H04W88/02; (IPC1-7): H04B7/26; H04M3/42; H04Q7/04