JPS54118106A - Fault retrieving system - Google Patents

Fault retrieving system

Info

Publication number
JPS54118106A
JPS54118106A JP2585178A JP2585178A JPS54118106A JP S54118106 A JPS54118106 A JP S54118106A JP 2585178 A JP2585178 A JP 2585178A JP 2585178 A JP2585178 A JP 2585178A JP S54118106 A JPS54118106 A JP S54118106A
Authority
JP
Japan
Prior art keywords
fault
transmission device
carrier
unit
sti
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
JP2585178A
Other languages
Japanese (ja)
Inventor
Takane Kakuno
Mitsuhiro Ishizaka
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2585178A priority Critical patent/JPS54118106A/en
Publication of JPS54118106A publication Critical patent/JPS54118106A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/42—Loop networks
    • H04L12/437—Ring fault isolation or reconfiguration

Abstract

PURPOSE:To shorten the fault recovery time for the fault retrieving system through the automatic detection of the faulty area by detaching temporarily and selectively the transmission device of the lower place by the central control unit when the carrier fault information signal is received from a transmission device. CONSTITUTION:Transmission device STi(i=1-k) monitors 6 the carrier fault and then informs the carrier fault, if occurs, to central control unit ST0 via transmission circuit part 4, and at the same time receives 3 the order from unit ST0 to reset FF9 and then switching off by-pass relay 2 to detach it from transmission line 1. Furthermore, common control part 5 is detached from line 1 through the self- control in case the carrier fault continues for more than the fixed time. Here, unit ST0, when receiving the carrier fault information from unit STi, detaches temporarily and selectively the transmission device which is located at the lower place of STi from the transmission line based on the detaching order, thus carrying out the automatic faulty area. As a result, the faulty area can be detected quickly at the remote place to eliminate the fault quickly, thus shortening the fault recovery time of the system.
JP2585178A 1978-03-07 1978-03-07 Fault retrieving system Pending JPS54118106A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2585178A JPS54118106A (en) 1978-03-07 1978-03-07 Fault retrieving system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2585178A JPS54118106A (en) 1978-03-07 1978-03-07 Fault retrieving system

Publications (1)

Publication Number Publication Date
JPS54118106A true JPS54118106A (en) 1979-09-13

Family

ID=12177330

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2585178A Pending JPS54118106A (en) 1978-03-07 1978-03-07 Fault retrieving system

Country Status (1)

Country Link
JP (1) JPS54118106A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS605642A (en) * 1983-06-24 1985-01-12 Mitsubishi Electric Corp Diagnosing system of data link system
JPS6225530A (en) * 1985-07-26 1987-02-03 Mitsubishi Electric Corp Fault detector of loop data link system
JPH04135349A (en) * 1990-09-27 1992-05-08 Nec Corp Internal fault monitoring device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS605642A (en) * 1983-06-24 1985-01-12 Mitsubishi Electric Corp Diagnosing system of data link system
JPS6225530A (en) * 1985-07-26 1987-02-03 Mitsubishi Electric Corp Fault detector of loop data link system
JPH04135349A (en) * 1990-09-27 1992-05-08 Nec Corp Internal fault monitoring device

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