JPS53116701A - Light communication supervisory system - Google Patents

Light communication supervisory system

Info

Publication number
JPS53116701A
JPS53116701A JP3184277A JP3184277A JPS53116701A JP S53116701 A JPS53116701 A JP S53116701A JP 3184277 A JP3184277 A JP 3184277A JP 3184277 A JP3184277 A JP 3184277A JP S53116701 A JPS53116701 A JP S53116701A
Authority
JP
Japan
Prior art keywords
light communication
supervisory system
communication supervisory
detect
folding back
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.)
Pending
Application number
JP3184277A
Other languages
Japanese (ja)
Inventor
Mikio Otsuki
Akira Miyata
Tsutomu Yoshibayashi
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP3184277A priority Critical patent/JPS53116701A/en
Publication of JPS53116701A publication Critical patent/JPS53116701A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/077—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal

Abstract

PURPOSE:To detect a faulty section of the system by folding back a supervisory signal in the repeating installation.
JP3184277A 1977-03-23 1977-03-23 Light communication supervisory system Pending JPS53116701A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3184277A JPS53116701A (en) 1977-03-23 1977-03-23 Light communication supervisory system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3184277A JPS53116701A (en) 1977-03-23 1977-03-23 Light communication supervisory system

Publications (1)

Publication Number Publication Date
JPS53116701A true JPS53116701A (en) 1978-10-12

Family

ID=12342297

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3184277A Pending JPS53116701A (en) 1977-03-23 1977-03-23 Light communication supervisory system

Country Status (1)

Country Link
JP (1) JPS53116701A (en)

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