JPS5797753A - Loop digital data highway device - Google Patents

Loop digital data highway device

Info

Publication number
JPS5797753A
JPS5797753A JP55174326A JP17432680A JPS5797753A JP S5797753 A JPS5797753 A JP S5797753A JP 55174326 A JP55174326 A JP 55174326A JP 17432680 A JP17432680 A JP 17432680A JP S5797753 A JPS5797753 A JP S5797753A
Authority
JP
Japan
Prior art keywords
station
terminal station
input
address
terminal
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
JP55174326A
Other languages
Japanese (ja)
Inventor
Kuniaki Uchiumi
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP55174326A priority Critical patent/JPS5797753A/en
Publication of JPS5797753A publication Critical patent/JPS5797753A/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 detect a position where a fault occurs, by transmitting the address of a terminal station to a center station when an input signal does not come to the terminal station on a loop line. CONSTITUTION:When a fault occurs in a terminal station 2-(i-1), an input signal does not come to a terminal station 2-i. An input detecting part 23i discriminates the absence of the input and reports it to a terminal station control part 21i-1 to transmit its own station address. In a terminal station 2-(i+1) and following stations, the address signal passes through as an input as it is. When receiving the address signal, a central control station 1 specifies the position of fault occurrence and controls switches through terminal stations to change connections of lines by the by-pass system or the loop-back system, thus recovering the fault.
JP55174326A 1980-12-10 1980-12-10 Loop digital data highway device Pending JPS5797753A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55174326A JPS5797753A (en) 1980-12-10 1980-12-10 Loop digital data highway device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55174326A JPS5797753A (en) 1980-12-10 1980-12-10 Loop digital data highway device

Publications (1)

Publication Number Publication Date
JPS5797753A true JPS5797753A (en) 1982-06-17

Family

ID=15976677

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55174326A Pending JPS5797753A (en) 1980-12-10 1980-12-10 Loop digital data highway device

Country Status (1)

Country Link
JP (1) JPS5797753A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01303598A (en) * 1988-05-31 1989-12-07 Hochiki Corp Disaster preventive monitoring device
JPH0228798A (en) * 1988-05-31 1990-01-30 Hochiki Corp Disaster prevention monitoring device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01303598A (en) * 1988-05-31 1989-12-07 Hochiki Corp Disaster preventive monitoring device
JPH0228798A (en) * 1988-05-31 1990-01-30 Hochiki Corp Disaster prevention monitoring device

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