JPS648734A - On/off control system for scpc carrier - Google Patents

On/off control system for scpc carrier

Info

Publication number
JPS648734A
JPS648734A JP16473687A JP16473687A JPS648734A JP S648734 A JPS648734 A JP S648734A JP 16473687 A JP16473687 A JP 16473687A JP 16473687 A JP16473687 A JP 16473687A JP S648734 A JPS648734 A JP S648734A
Authority
JP
Japan
Prior art keywords
station
signal
detector
generator
stop
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.)
Granted
Application number
JP16473687A
Other languages
Japanese (ja)
Other versions
JPH0650833B2 (en
Inventor
Kuniharu Murata
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Priority to JP16473687A priority Critical patent/JPH0650833B2/en
Publication of JPS648734A publication Critical patent/JPS648734A/en
Publication of JPH0650833B2 publication Critical patent/JPH0650833B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Radio Relay Systems (AREA)

Abstract

PURPOSE:To eliminate the need for a private controlling channel by using a signal line of a commercial channel as a signal line sending a signal from a control station to a controlled station. CONSTITUTION:An out-band signal outputted from a signal generator of a station A (control station) is sent to a station B (controlled station) via a voice detector 1. In detecting the said out-band signal by a signal detector 3, a switch 10 is thrown to the position of a signal generator 5. Then the output of the generator 5 is given to the station A via the voice detector 6. The signal is detected by the signal detector 4 and it is discriminated that the out-band signal from the station A is sent correctly to the station B to stop the output of the generator 2. The detector 3 of the station B detects the stop of the out-band signal from the station A to stop the output of the generator 5 thereby throwing the switch 11 to the position of a terminator 15. Thus, the input to the detector 6 is terminated to interrupt the communication carrier.
JP16473687A 1987-06-30 1987-06-30 ON / OFF control method for the SCPC carrier Expired - Fee Related JPH0650833B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16473687A JPH0650833B2 (en) 1987-06-30 1987-06-30 ON / OFF control method for the SCPC carrier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16473687A JPH0650833B2 (en) 1987-06-30 1987-06-30 ON / OFF control method for the SCPC carrier

Publications (2)

Publication Number Publication Date
JPS648734A true JPS648734A (en) 1989-01-12
JPH0650833B2 JPH0650833B2 (en) 1994-06-29

Family

ID=15798925

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16473687A Expired - Fee Related JPH0650833B2 (en) 1987-06-30 1987-06-30 ON / OFF control method for the SCPC carrier

Country Status (1)

Country Link
JP (1) JPH0650833B2 (en)

Also Published As

Publication number Publication date
JPH0650833B2 (en) 1994-06-29

Similar Documents

Publication Publication Date Title
ES2018742A6 (en) Two-wire television interphone system
JPS57173232A (en) Automatic equalizer
ES8502556A1 (en) Testable optically isolated control circuit
ES8608189A1 (en) Testable optically isolated control circuit
JPS57116438A (en) Radio communication system
JPS57141148A (en) Radio telephone set
JPS55123242A (en) Circuit control system
KR960008439B1 (en) Controlling signal transmitting apparatus
JPS56119570A (en) Emergency communication system
JPS5725787A (en) Control system of channel during service interruption
JPS575474A (en) Signal switching device
JPS57136857A (en) Audible signal transmission system
JPS5737944A (en) Monitor reception system for transmitter
JPS57166758A (en) Signal collision detecting system
JPS5780837A (en) Signal gathering system
JPS6449432A (en) Radio communication system
JPS56122253A (en) Signal transmission system
JPS64830A (en) Radio relay system
JPS6436160A (en) Facsimile mode changeover control system
JPS57106946A (en) Remote system having voice outputting means
JPS5797753A (en) Loop digital data highway device
JPS57150244A (en) Connection control system of communication circuit
JPS5568753A (en) Station guidance automatic broadcast device
JPS6478599A (en) Automatic communication device system
JPS54108178A (en) Remote change over control system

Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees