JPS56149149A - Communication system of remote monitor system - Google Patents

Communication system of remote monitor system

Info

Publication number
JPS56149149A
JPS56149149A JP5245180A JP5245180A JPS56149149A JP S56149149 A JPS56149149 A JP S56149149A JP 5245180 A JP5245180 A JP 5245180A JP 5245180 A JP5245180 A JP 5245180A JP S56149149 A JPS56149149 A JP S56149149A
Authority
JP
Japan
Prior art keywords
equipment
data
transmission line
power
power failure
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
JP5245180A
Other languages
English (en)
Japanese (ja)
Other versions
JPS639416B2 (enExample
Inventor
Hitoshi Aoyama
Takashi Kobori
Kazuyoshi Iijima
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
Nippon Electric Co Ltd
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, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP5245180A priority Critical patent/JPS56149149A/ja
Publication of JPS56149149A publication Critical patent/JPS56149149A/ja
Publication of JPS639416B2 publication Critical patent/JPS639416B2/ja
Granted legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B3/00Line transmission systems
    • H04B3/02Details
    • H04B3/44Arrangements for feeding power to a repeater along the transmission line

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Dc Digital Transmission (AREA)
  • Small-Scale Networks (AREA)
  • Communication Control (AREA)
  • Selective Calling Equipment (AREA)
JP5245180A 1980-04-21 1980-04-21 Communication system of remote monitor system Granted JPS56149149A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5245180A JPS56149149A (en) 1980-04-21 1980-04-21 Communication system of remote monitor system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5245180A JPS56149149A (en) 1980-04-21 1980-04-21 Communication system of remote monitor system

Publications (2)

Publication Number Publication Date
JPS56149149A true JPS56149149A (en) 1981-11-18
JPS639416B2 JPS639416B2 (enExample) 1988-02-29

Family

ID=12915082

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5245180A Granted JPS56149149A (en) 1980-04-21 1980-04-21 Communication system of remote monitor system

Country Status (1)

Country Link
JP (1) JPS56149149A (enExample)

Also Published As

Publication number Publication date
JPS639416B2 (enExample) 1988-02-29

Similar Documents

Publication Publication Date Title
DE3463993D1 (en) Apparatus for detecting tapping of light energy from an optical fiber
JPS56149148A (en) Signal transmission system
JPS56149149A (en) Communication system of remote monitor system
JPS57101440A (en) Power line carrier communication system
JPS568936A (en) Supervisory system for fault of transmission line
JPS5715548A (en) Polling monitor system
JPS6447239A (en) Remote power supply system equipped with monitoring mechanism
JPH071870Y2 (ja) 光中継器の警報指示信号送出回路
JPS5730460A (en) Communication terminal equipment having incorporated power source
JPS5725743A (en) Maintenance system of radio telephone system
JPS5678261A (en) Remote electric power feeding device
JPS55124355A (en) Terminal reply system for data transmission
JPS56164695A (en) Key telephone set
JPS56149154A (en) Transmission system for information on power failure
SU976496A2 (ru) Пороговое регенеративное устройство
JPS5715539A (en) Monitoring system for transmission system
JPS56117441A (en) Suppressing method for undesired electric wave in information collecting system
JPS5534586A (en) Trouble detecting system in two-ways data communication system
JPS5757050A (en) Light repeater
JPS56149155A (en) Transmission system for information on power failure
JPS5614748A (en) Data collecting circuit
JPS5451860A (en) Detection system of service interruption of terminal units in telemeter system
JPS6473851A (en) Terminal connection identifying system
JPS56124903A (en) Mobile monitoring equipment
JPS61198987A (ja) Catv伝送路システムの無停電給電装置