JPS5742244A - Optical transmission system - Google Patents

Optical transmission system

Info

Publication number
JPS5742244A
JPS5742244A JP55118606A JP11860680A JPS5742244A JP S5742244 A JPS5742244 A JP S5742244A JP 55118606 A JP55118606 A JP 55118606A JP 11860680 A JP11860680 A JP 11860680A JP S5742244 A JPS5742244 A JP S5742244A
Authority
JP
Japan
Prior art keywords
relay device
spare
optical transmission
existing
power
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
JP55118606A
Other languages
Japanese (ja)
Inventor
Masaaki Watanabe
Norio Yoshikubo
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 JP55118606A priority Critical patent/JPS5742244A/en
Publication of JPS5742244A publication Critical patent/JPS5742244A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/22—Arrangements for detecting or preventing errors in the information received using redundant apparatus to increase reliability

Abstract

PURPOSE:To enable stable optical transmission and to increase the reliability of system, by feeding power only when switched from the existing use to a spare system, in a relay device for optical transmission. CONSTITUTION:When a current directs toward solid lines 19 in a relay device 3, since a Zener diode ZD116 is in reverse direction and a ZD217 is in forward direction, an existing relay device 4 receives power supply for operation, but a spare relay device 5 is not actuated. If a failure is taken place in the device 4, it is detected at a monitor circuit 11 of a terminal station 9. When the direction of power feeding current is switched to dotted lines 18, since the ZD116 is in forward direction and the ZD217 is in reverse direction, power is given to the spare relay device 5, the device 4 is not operated, allowing to switch the system of existing and spare.
JP55118606A 1980-08-28 1980-08-28 Optical transmission system Pending JPS5742244A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55118606A JPS5742244A (en) 1980-08-28 1980-08-28 Optical transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55118606A JPS5742244A (en) 1980-08-28 1980-08-28 Optical transmission system

Publications (1)

Publication Number Publication Date
JPS5742244A true JPS5742244A (en) 1982-03-09

Family

ID=14740718

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55118606A Pending JPS5742244A (en) 1980-08-28 1980-08-28 Optical transmission system

Country Status (1)

Country Link
JP (1) JPS5742244A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008068842A1 (en) * 2006-12-05 2008-06-12 Kddi Corporation Optical repeater of optical submarine cable system and optical submarine cable system equipped with that optical repeater
JP2015130668A (en) * 2013-12-31 2015-07-16 ゼネラル・エレクトリック・カンパニイ Transmission system error detection and correction system and method
JP2015136104A (en) * 2013-12-31 2015-07-27 ゼネラル・エレクトリック・カンパニイ Serial link fault detection system and method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008068842A1 (en) * 2006-12-05 2008-06-12 Kddi Corporation Optical repeater of optical submarine cable system and optical submarine cable system equipped with that optical repeater
JP2015130668A (en) * 2013-12-31 2015-07-16 ゼネラル・エレクトリック・カンパニイ Transmission system error detection and correction system and method
JP2015136104A (en) * 2013-12-31 2015-07-27 ゼネラル・エレクトリック・カンパニイ Serial link fault detection system and method

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