JPS56149850A - Data highway system - Google Patents

Data highway system

Info

Publication number
JPS56149850A
JPS56149850A JP5388580A JP5388580A JPS56149850A JP S56149850 A JPS56149850 A JP S56149850A JP 5388580 A JP5388580 A JP 5388580A JP 5388580 A JP5388580 A JP 5388580A JP S56149850 A JPS56149850 A JP S56149850A
Authority
JP
Japan
Prior art keywords
supervisory unit
nodes
highway
polling
occurred
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
JP5388580A
Other languages
Japanese (ja)
Other versions
JPS641987B2 (en
Inventor
Yoshihiro Kitano
Yoichi Suzuki
Teruyoshi Mita
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 JP5388580A priority Critical patent/JPS56149850A/en
Publication of JPS56149850A publication Critical patent/JPS56149850A/en
Publication of JPS641987B2 publication Critical patent/JPS641987B2/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

PURPOSE:To make the maintenance and operation easy, by polling all the nodes from the highway supervisory unit by the use of the other system and detecting the node address, when a fault has occurred in one side of the duplex transmission line. CONSTITUTION:A looplike data highway system is formed by connecting a highway supervisory unit SV and station nodes ST0-STn to the transmission lines L0, L1 which are used in common for transmitting the data in the opposite direction mutually. In case step-out has occurred in the line L of one node ST, the supervisory unit SV executes the line switch operation to all the nodes by use of the system. After switching to the other system, the supervisory unit SV polls all the STs from this other system. The ST in which step-out has occured can be known by collecting a response to said polling by the supervisory unit SV and preparing a table.
JP5388580A 1980-04-23 1980-04-23 Data highway system Granted JPS56149850A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5388580A JPS56149850A (en) 1980-04-23 1980-04-23 Data highway system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5388580A JPS56149850A (en) 1980-04-23 1980-04-23 Data highway system

Publications (2)

Publication Number Publication Date
JPS56149850A true JPS56149850A (en) 1981-11-19
JPS641987B2 JPS641987B2 (en) 1989-01-13

Family

ID=12955184

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5388580A Granted JPS56149850A (en) 1980-04-23 1980-04-23 Data highway system

Country Status (1)

Country Link
JP (1) JPS56149850A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58107744A (en) * 1981-12-22 1983-06-27 Fujitsu Ltd Failed position detecting system for loop transmission line
JPS59221052A (en) * 1983-05-31 1984-12-12 Nec Corp Data transmission equipment
JPS6030236A (en) * 1983-07-28 1985-02-15 Toshiba Corp Detection system of data way trouble point
JPS60182837A (en) * 1984-03-01 1985-09-18 Oki Electric Ind Co Ltd Error processing system of loop bus control system
JPS60182836A (en) * 1984-03-01 1985-09-18 Oki Electric Ind Co Ltd Maintenance system of remote system
JPH02121542A (en) * 1988-10-31 1990-05-09 Fujitsu Ltd Circuit fault separating system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58107744A (en) * 1981-12-22 1983-06-27 Fujitsu Ltd Failed position detecting system for loop transmission line
JPH0113777B2 (en) * 1981-12-22 1989-03-08 Fujitsu Ltd
JPS59221052A (en) * 1983-05-31 1984-12-12 Nec Corp Data transmission equipment
JPS6030236A (en) * 1983-07-28 1985-02-15 Toshiba Corp Detection system of data way trouble point
JPS60182837A (en) * 1984-03-01 1985-09-18 Oki Electric Ind Co Ltd Error processing system of loop bus control system
JPS60182836A (en) * 1984-03-01 1985-09-18 Oki Electric Ind Co Ltd Maintenance system of remote system
JPH02121542A (en) * 1988-10-31 1990-05-09 Fujitsu Ltd Circuit fault separating system

Also Published As

Publication number Publication date
JPS641987B2 (en) 1989-01-13

Similar Documents

Publication Publication Date Title
GB8912090D0 (en) Data networks
JPS57157661A (en) Transmission line switching system
GB1447007A (en) Communications systems hving automatic line transfer systems
JPS56149850A (en) Data highway system
GB9026227D0 (en) Double bus type network
IE44531L (en) Telesupervision for pcm transmission system
JPS5534574A (en) Path control method for control information transmission network
JPS56149851A (en) Looplike data transmission equipment
JPS54139404A (en) Circuit fault process system of on-line data transmission system
JPS5358705A (en) Switching system for transmission line
JPS5539429A (en) Monitoring system for signal transmission line
JPS57101901A (en) Dispersion type control system
JPS52102607A (en) Remote device control system
JPS5595490A (en) System switching system for exchange
JPS57193150A (en) Self-diagnostic system for two line type transmission line
JPS5619256A (en) Centralized monitor control system
JPS57138240A (en) Hairpin network
CA2222656C (en) Rerouting and change-back systems for asynchronous transfer mode network
JPS53100701A (en) Transmission relay monitor system for optical pcm group
JPS56129457A (en) Communication system of full duplex data
JPS5628553A (en) Data transmission system
JPS53131705A (en) Automatic telephone exchange system
JPS5578653A (en) Data transmission system
JPS5628594A (en) Main wire originating control method
JPS56116354A (en) Failure monitor system