JPS639416B2 - - Google Patents

Info

Publication number
JPS639416B2
JPS639416B2 JP55052451A JP5245180A JPS639416B2 JP S639416 B2 JPS639416 B2 JP S639416B2 JP 55052451 A JP55052451 A JP 55052451A JP 5245180 A JP5245180 A JP 5245180A JP S639416 B2 JPS639416 B2 JP S639416B2
Authority
JP
Japan
Prior art keywords
data
line
current
contact
relay
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.)
Expired
Application number
JP55052451A
Other languages
English (en)
Japanese (ja)
Other versions
JPS56149149A (en
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
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 Nippon Electric Co Ltd filed Critical Nippon Electric Co Ltd
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 JPS56149149A (en) 1981-11-18
JPS639416B2 true 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
JPS56149149A (en) 1981-11-18

Similar Documents

Publication Publication Date Title
US5185779A (en) Cellular alarm backup system
CA1194175A (en) Fault tolerant, self-powered data reporting system
US10869347B2 (en) Wireless pairing system and method
JPH0525211B2 (enExample)
JPS639416B2 (enExample)
JPH02214244A (ja) 送電兼送信装置
JP2670703B2 (ja) 局給電動作形網制御装置
JPS60242759A (ja) 回線断線検出装置
JPS59228451A (ja) カレントル−プ伝送方式
JPS61228742A (ja) 遠方監視制御装置
JPS63318823A (ja) 故障検出方式
JP3356719B2 (ja) Isdn用dsuにおける加入者線極性正常化方式
JPH027119B2 (enExample)
CN104682999A (zh) 智能终端整机供电用二线制数据/电源共线传输装置及方法
JPS6111835Y2 (enExample)
JPS6256711B2 (enExample)
JP2639946B2 (ja) 端末装置の呼出方式
JPS6313585B2 (enExample)
JPS5829287A (ja) 遠隔制御監視装置
JPS646618Y2 (enExample)
JP2672882B2 (ja) 通信装置
JPS5958959A (ja) 回線を共用する電話およびデ−タ伝送方式
JPS6310948A (ja) ホ−ムバスシステム用電話機アダプタ
JPS6224793A (ja) 多重伝送システム
JP2958230B2 (ja) 端末網制御装置