JPS58209250A - デイジタル中継伝送路の監視方式 - Google Patents

デイジタル中継伝送路の監視方式

Info

Publication number
JPS58209250A
JPS58209250A JP57092423A JP9242382A JPS58209250A JP S58209250 A JPS58209250 A JP S58209250A JP 57092423 A JP57092423 A JP 57092423A JP 9242382 A JP9242382 A JP 9242382A JP S58209250 A JPS58209250 A JP S58209250A
Authority
JP
Japan
Prior art keywords
signal
communication
circuit
communication line
relay transmission
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
JP57092423A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6350906B2 (OSRAM
Inventor
Koichi Fujisaki
弘一 藤崎
Yasutaka Ichihashi
市橋　保孝
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.)
NTT Inc
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 JP57092423A priority Critical patent/JPS58209250A/ja
Publication of JPS58209250A publication Critical patent/JPS58209250A/ja
Publication of JPS6350906B2 publication Critical patent/JPS6350906B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/40—Monitoring; Testing of relay systems
    • H04B17/401—Monitoring; Testing of relay systems with selective localization
    • H04B17/402—Monitoring; Testing of relay systems with selective localization using different frequencies
    • H04B17/404—Monitoring; Testing of relay systems with selective localization using different frequencies selected by local filters

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Dc Digital Transmission (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Optical Communication System (AREA)
JP57092423A 1982-05-31 1982-05-31 デイジタル中継伝送路の監視方式 Granted JPS58209250A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57092423A JPS58209250A (ja) 1982-05-31 1982-05-31 デイジタル中継伝送路の監視方式

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57092423A JPS58209250A (ja) 1982-05-31 1982-05-31 デイジタル中継伝送路の監視方式

Publications (2)

Publication Number Publication Date
JPS58209250A true JPS58209250A (ja) 1983-12-06
JPS6350906B2 JPS6350906B2 (OSRAM) 1988-10-12

Family

ID=14054009

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57092423A Granted JPS58209250A (ja) 1982-05-31 1982-05-31 デイジタル中継伝送路の監視方式

Country Status (1)

Country Link
JP (1) JPS58209250A (OSRAM)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60183834A (ja) * 1984-03-02 1985-09-19 Fujitsu Ltd 監視制御信号入力断回路
JPS6427329A (en) * 1987-07-23 1989-01-30 Kokusai Denshin Denwa Co Ltd Fault location supervisory system for optical fiber communication system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60183834A (ja) * 1984-03-02 1985-09-19 Fujitsu Ltd 監視制御信号入力断回路
JPS6427329A (en) * 1987-07-23 1989-01-30 Kokusai Denshin Denwa Co Ltd Fault location supervisory system for optical fiber communication system

Also Published As

Publication number Publication date
JPS6350906B2 (OSRAM) 1988-10-12

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