JPS56161742A - Automatic detection method for faulty part in loop transmitting system - Google Patents

Automatic detection method for faulty part in loop transmitting system

Info

Publication number
JPS56161742A
JPS56161742A JP6529980A JP6529980A JPS56161742A JP S56161742 A JPS56161742 A JP S56161742A JP 6529980 A JP6529980 A JP 6529980A JP 6529980 A JP6529980 A JP 6529980A JP S56161742 A JPS56161742 A JP S56161742A
Authority
JP
Japan
Prior art keywords
carrier
station
terminal
itself
break
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
JP6529980A
Other languages
Japanese (ja)
Other versions
JPS648502B2 (en
Inventor
Eiji Aranaka
Shuichi Okazaki
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.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry Co 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 Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority to JP6529980A priority Critical patent/JPS56161742A/en
Publication of JPS56161742A publication Critical patent/JPS56161742A/en
Publication of JPS648502B2 publication Critical patent/JPS648502B2/ja
Granted 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 enable a master station to recognize the presence of a failure at the preceding position of a terminal station transmitting this address, by transmitting the carrier of itself if the break of carrier continues for a given time or more in a loop transmission system, and transmitting the response including the address of the station itself on the carrier itself after a given time. CONSTITUTION:For example, if a failure such as line break is taken place between a terminal station A and a terminal station B, although a master station 1, terminal stations B, C, D detect the break of carrier, the terminal A cannot detect the carrier break. Further, each station detecting the carrier break starts transmitting the carrier itself of the mark code to an L-LOOP after T3. Thus, after T6 times, the master station 1 and the terminal stations C, D can detect the carrier and the terminal station B cannot detect it to continue to output the carrier and the address of itself is transmitted at T8 after a given time.
JP6529980A 1980-05-19 1980-05-19 Automatic detection method for faulty part in loop transmitting system Granted JPS56161742A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6529980A JPS56161742A (en) 1980-05-19 1980-05-19 Automatic detection method for faulty part in loop transmitting system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6529980A JPS56161742A (en) 1980-05-19 1980-05-19 Automatic detection method for faulty part in loop transmitting system

Publications (2)

Publication Number Publication Date
JPS56161742A true JPS56161742A (en) 1981-12-12
JPS648502B2 JPS648502B2 (en) 1989-02-14

Family

ID=13282894

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6529980A Granted JPS56161742A (en) 1980-05-19 1980-05-19 Automatic detection method for faulty part in loop transmitting system

Country Status (1)

Country Link
JP (1) JPS56161742A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61123237A (en) * 1984-11-19 1986-06-11 Fuji Electric Co Ltd Loop disconnection dispolay method of transmission system
JPS61127246A (en) * 1984-11-26 1986-06-14 Hitachi Ltd Localization system of network fault
JPS6225530A (en) * 1985-07-26 1987-02-03 Mitsubishi Electric Corp Fault detector of loop data link system
JPH0846570A (en) * 1994-08-01 1996-02-16 Nec Corp Optical terminal and optical network

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5057106A (en) * 1973-09-17 1975-05-19
JPS5148235A (en) * 1974-10-23 1976-04-24 Omron Tateisi Electronics Co
JPS5336104A (en) * 1976-09-16 1978-04-04 Hitachi Ltd Trouble discrimination equipment in loop-type data transmission system
JPS5424508A (en) * 1977-07-26 1979-02-23 Fujitsu Ltd Filure detection system for loop delivery
JPS5539451A (en) * 1978-09-14 1980-03-19 Meidensha Electric Mfg Co Ltd Fault detection system for remote monitor control device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5057106A (en) * 1973-09-17 1975-05-19
JPS5148235A (en) * 1974-10-23 1976-04-24 Omron Tateisi Electronics Co
JPS5336104A (en) * 1976-09-16 1978-04-04 Hitachi Ltd Trouble discrimination equipment in loop-type data transmission system
JPS5424508A (en) * 1977-07-26 1979-02-23 Fujitsu Ltd Filure detection system for loop delivery
JPS5539451A (en) * 1978-09-14 1980-03-19 Meidensha Electric Mfg Co Ltd Fault detection system for remote monitor control device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61123237A (en) * 1984-11-19 1986-06-11 Fuji Electric Co Ltd Loop disconnection dispolay method of transmission system
JPS61127246A (en) * 1984-11-26 1986-06-14 Hitachi Ltd Localization system of network fault
JPH0685530B2 (en) * 1984-11-26 1994-10-26 株式会社日立製作所 Network localization system
JPS6225530A (en) * 1985-07-26 1987-02-03 Mitsubishi Electric Corp Fault detector of loop data link system
JPH0846570A (en) * 1994-08-01 1996-02-16 Nec Corp Optical terminal and optical network

Also Published As

Publication number Publication date
JPS648502B2 (en) 1989-02-14

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