JPS5372514A - Fault detector of repeater - Google Patents

Fault detector of repeater

Info

Publication number
JPS5372514A
JPS5372514A JP14903876A JP14903876A JPS5372514A JP S5372514 A JPS5372514 A JP S5372514A JP 14903876 A JP14903876 A JP 14903876A JP 14903876 A JP14903876 A JP 14903876A JP S5372514 A JPS5372514 A JP S5372514A
Authority
JP
Japan
Prior art keywords
repeater
fault detector
pilot signal
eliminate
monitoring
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
JP14903876A
Other languages
Japanese (ja)
Other versions
JPS5742252B2 (en
Inventor
Tetsuo Hanazawa
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 JP14903876A priority Critical patent/JPS5372514A/en
Publication of JPS5372514A publication Critical patent/JPS5372514A/en
Publication of JPS5742252B2 publication Critical patent/JPS5742252B2/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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

PURPOSE:To use only one kind of pilot signal which is sent from the terminal station by monitoring the pilot signal state for each repeater, and thus to eliminate the distortion caused by the pilot signal even in case the number of the repeater is large.
JP14903876A 1976-12-10 1976-12-10 Fault detector of repeater Granted JPS5372514A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14903876A JPS5372514A (en) 1976-12-10 1976-12-10 Fault detector of repeater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14903876A JPS5372514A (en) 1976-12-10 1976-12-10 Fault detector of repeater

Publications (2)

Publication Number Publication Date
JPS5372514A true JPS5372514A (en) 1978-06-28
JPS5742252B2 JPS5742252B2 (en) 1982-09-08

Family

ID=15466288

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14903876A Granted JPS5372514A (en) 1976-12-10 1976-12-10 Fault detector of repeater

Country Status (1)

Country Link
JP (1) JPS5372514A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5184242A (en) * 1989-12-15 1993-02-02 Nec Corporation Supervisory circuit for optical repeater

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6069870U (en) * 1983-10-19 1985-05-17 愛知機械工業株式会社 Patchkin presser metal fittings

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52114209A (en) * 1976-03-22 1977-09-24 Maspro Denko Kk Device for monitoring operating state of line amplifier

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52114209A (en) * 1976-03-22 1977-09-24 Maspro Denko Kk Device for monitoring operating state of line amplifier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5184242A (en) * 1989-12-15 1993-02-02 Nec Corporation Supervisory circuit for optical repeater

Also Published As

Publication number Publication date
JPS5742252B2 (en) 1982-09-08

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