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Title:
AIR-TO-GROUND SPECIFICATION CONTROL SYSTEM OF FACSIMILE EQUIPMENET
Document Type and Number:
Japanese Patent JPS5546602
Kind Code:
A
Abstract:

PURPOSE: To make it possible to attain air-to-ground specification at a facsimile equipment side not through a private branch exchange, by providing a facsimile equipment, which can be connected to a communication netwrok, with a memory method for a selective signal and a timer method.

CONSTITUTION: Telephone set 1 is connected to communication network 3 through switching connection part 7 in network control circuit 5. Sending a selective signal for calling a ground station sets a circuit between main body 4 of facsimile equipment 2 and the party ground station. Numbers equivalent to some or all of digits of the selective signal are stroed in memory method 6. To call a specified ground station, timer method 8 is operated to release forcibly the circuit, even after set, through connection part 7 fixed-time later, thereby disallowing facsimile communication with the party ground station. In case of a selective signal for calling any other ground station than specified one, method 8 never operates and the circuit is not released, so that facsimile communication between unit 2 and the party ground station will be possible until a communication end. Key 10 is normally open, but closed only when facsimile communication with the specified ground station.


Inventors:
TOOYAMA TOSHIAKI
HIRAOKA TAKAO
Application Number:
JP11861678A
Publication Date:
April 01, 1980
Filing Date:
September 28, 1978
Export Citation:
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Assignee:
HITACHI LTD
International Classes:
H04N1/32; H04M1/66; H04M1/67; H04N1/00; (IPC1-7): H04M1/66; H04N1/00



 
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