JPS5538747A - Calling system for order circuit - Google Patents

Calling system for order circuit

Info

Publication number
JPS5538747A
JPS5538747A JP11140978A JP11140978A JPS5538747A JP S5538747 A JPS5538747 A JP S5538747A JP 11140978 A JP11140978 A JP 11140978A JP 11140978 A JP11140978 A JP 11140978A JP S5538747 A JPS5538747 A JP S5538747A
Authority
JP
Japan
Prior art keywords
station
units
calling
repeater
modem13
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP11140978A
Other languages
Japanese (ja)
Inventor
Hitoshi Murohashi
Sumio Suzuki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP11140978A priority Critical patent/JPS5538747A/en
Publication of JPS5538747A publication Critical patent/JPS5538747A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To always ensure the simultaneous selective calling for the repeater station with omission of the call interception by transmitting a series of pulse rows caused by the aural frequency to the order telephone circuit and then detecting these automatically at each repeater station to detect the presence or absence of the calling to the own station.
CONSTITUTION: Setting switch 11 of the selective call device's transmission part is provided in n units to correspond to n units of repeater stations. These switches are then connected to order telephone circuit 3 via multiplexer 12 and MODEM13. Here if the control signal is applied to gate 21, the resetting is repeated with every N units of pulses and based on the preset value of down-counter 22. Thus the control signal is transmitted to circuit 3 via multiplexer 12. This signal is then applied to MODEM13' of the reception part and then given to n units of flip-flop 31 via demultiplexer 30. Thus sound generator 34, which is installed to the output of the number corresponding to the channel selection bit position of the corresponding station, informs the calling to the own station.
COPYRIGHT: (C)1980,JPO&Japio
JP11140978A 1978-09-11 1978-09-11 Calling system for order circuit Pending JPS5538747A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11140978A JPS5538747A (en) 1978-09-11 1978-09-11 Calling system for order circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11140978A JPS5538747A (en) 1978-09-11 1978-09-11 Calling system for order circuit

Publications (1)

Publication Number Publication Date
JPS5538747A true JPS5538747A (en) 1980-03-18

Family

ID=14560421

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11140978A Pending JPS5538747A (en) 1978-09-11 1978-09-11 Calling system for order circuit

Country Status (1)

Country Link
JP (1) JPS5538747A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS495191A (en) * 1972-05-04 1974-01-17
JPS5295421A (en) * 1976-02-05 1977-08-11 Kyowa Sangiyou Kk Sun visor for vehicle and method of manufacturing the same
JPS52136096A (en) * 1976-05-07 1977-11-14 Dainippon Printing Co Ltd Method of packing cotton-like material by compression

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS495191A (en) * 1972-05-04 1974-01-17
JPS5295421A (en) * 1976-02-05 1977-08-11 Kyowa Sangiyou Kk Sun visor for vehicle and method of manufacturing the same
JPS52136096A (en) * 1976-05-07 1977-11-14 Dainippon Printing Co Ltd Method of packing cotton-like material by compression

Similar Documents

Publication Publication Date Title
JPS56126339A (en) Mobile communication system
JPS52130589A (en) Mobile radio controllig system
JPS5538747A (en) Calling system for order circuit
JPS57152242A (en) Mobile communication control system
JPS5669950A (en) General polling system of data transmission system
JPS5563165A (en) Data collection device
JPS5422112A (en) Automatic switching system for receiving signal
JPS5531311A (en) Direct trunk setting system for multi-channel radio communication system
JPS57180241A (en) Radio communication system
JPS5744342A (en) Information collection system
JPS572153A (en) Generating device of digital pseudo call
JPS5255405A (en) Pilot test system
JPS55158750A (en) Order circuit forming system for time-division multiple phase modulation multi-directional ratio communication system
JPS56144649A (en) Ring-off control system of multiple address communication master-station device
JPS53124008A (en) Call signal transmission system
JPS57141146A (en) Radio repeating device
JPS5630338A (en) Signal change-over system
JPS54162905A (en) Radiotelephony equipment
JPS54148404A (en) Signal sampling system for time-division multiple device
JPS5577251A (en) Time-division multi-directional multiplex transmission system
JPS5391508A (en) Transmission control system for sound signal
JPS57170633A (en) Site diversity communication system
JPS5471903A (en) Channel selection unit
JPS5419303A (en) Transmission and reception system of signal
JPS5419301A (en) Transmission and reception system of signal