JPS6489726A - Trouble detecting device for optical transmission line - Google Patents

Trouble detecting device for optical transmission line

Info

Publication number
JPS6489726A
JPS6489726A JP24610987A JP24610987A JPS6489726A JP S6489726 A JPS6489726 A JP S6489726A JP 24610987 A JP24610987 A JP 24610987A JP 24610987 A JP24610987 A JP 24610987A JP S6489726 A JPS6489726 A JP S6489726A
Authority
JP
Japan
Prior art keywords
optical
fiber cable
trouble
optical fiber
transmitting
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
JP24610987A
Other languages
Japanese (ja)
Inventor
Takeshi Kumagai
Toshiki Fukushima
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.)
Toshiba Corp
Original Assignee
Toshiba 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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP24610987A priority Critical patent/JPS6489726A/en
Publication of JPS6489726A publication Critical patent/JPS6489726A/en
Pending legal-status Critical Current

Links

Landscapes

  • Monitoring And Testing Of Transmission In General (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To automatically and quickly detect the trouble of an optical transmission line by branching an optical signal at a remote edge from the transmitting source of the optical signal and returning it to the transmitting source directly. CONSTITUTION:At a transmitting side optical fiber cable 33 in a site unit 20 at a remote terminal for an intermediate operation unit 10 which goes to a transmitting source, at a receiving side optical fiber cable 36, an optical branching device 26 is provided, then optical coupler 25 is provided to an optical fiber cable at the receiving side, and short-circuited by an optical fiber cable 37. In the intermediate operation unit 10, it is always supervised by an on-line whether or not the same data as the transmitting data are returned. By a comparing deciding part 115, regardless of the fact that the abnormality is not detected, it is judged that an arithmetic processing unit 21 at the site unit 20 is trouble, when the data are not returned from the site unit 20. Consequently, it is not necessary to detect the trouble through a help and a labor.
JP24610987A 1987-09-30 1987-09-30 Trouble detecting device for optical transmission line Pending JPS6489726A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24610987A JPS6489726A (en) 1987-09-30 1987-09-30 Trouble detecting device for optical transmission line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24610987A JPS6489726A (en) 1987-09-30 1987-09-30 Trouble detecting device for optical transmission line

Publications (1)

Publication Number Publication Date
JPS6489726A true JPS6489726A (en) 1989-04-04

Family

ID=17143616

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24610987A Pending JPS6489726A (en) 1987-09-30 1987-09-30 Trouble detecting device for optical transmission line

Country Status (1)

Country Link
JP (1) JPS6489726A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003520423A (en) * 2000-01-14 2003-07-02 アブ アーベー Capacitor element for power capacitor, method for manufacturing the capacitor element, and power capacitor including the capacitor element
JP2005333311A (en) * 2004-05-19 2005-12-02 Chugoku Electric Power Co Inc:The Fault recovery method in two-core two-way communication network

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003520423A (en) * 2000-01-14 2003-07-02 アブ アーベー Capacitor element for power capacitor, method for manufacturing the capacitor element, and power capacitor including the capacitor element
JP2005333311A (en) * 2004-05-19 2005-12-02 Chugoku Electric Power Co Inc:The Fault recovery method in two-core two-way communication network

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