JPS55138944A - Transmission line control system - Google Patents

Transmission line control system

Info

Publication number
JPS55138944A
JPS55138944A JP4753379A JP4753379A JPS55138944A JP S55138944 A JPS55138944 A JP S55138944A JP 4753379 A JP4753379 A JP 4753379A JP 4753379 A JP4753379 A JP 4753379A JP S55138944 A JPS55138944 A JP S55138944A
Authority
JP
Japan
Prior art keywords
transmission
line
transmission lines
reserve
pair
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
JP4753379A
Other languages
Japanese (ja)
Inventor
Kenji Kikuchi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP4753379A priority Critical patent/JPS55138944A/en
Publication of JPS55138944A publication Critical patent/JPS55138944A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)

Abstract

PURPOSE:To make it possible to perform reconstitution of the system in a short time in case of fault, etc., by supplying a clock signal in the reserve transmission line at all times, in the loop type data transmission system having one pair of existing and reserve transmission lines. CONSTITUTION:The transmission devices 11-1n having clock generators 101- 10n, respectively are connected in a loop by the transmission lines L, L'. Each transmission device consists of one pair of line receivers 11n, 11n', one pair of line drivers 12n, 12n', a control part 13n and synchronous detection parts 14n, 14n'. The control part 13n monitors the transmission lines L, L', and controls as to how the units such as line receiver, line driver, clock generator, etc. are connected to the transmission lines L, L'. As for one of the transmission lines L and L', which is used as a reserve one, a clock signal is always supplied from itself or other transmission device and is operated with the units connected to this transmission line, therefore the whole system becomes a stable operation status in a short time after connection of the units has been changed in case of fault, etc.
JP4753379A 1979-04-18 1979-04-18 Transmission line control system Pending JPS55138944A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4753379A JPS55138944A (en) 1979-04-18 1979-04-18 Transmission line control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4753379A JPS55138944A (en) 1979-04-18 1979-04-18 Transmission line control system

Publications (1)

Publication Number Publication Date
JPS55138944A true JPS55138944A (en) 1980-10-30

Family

ID=12777755

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4753379A Pending JPS55138944A (en) 1979-04-18 1979-04-18 Transmission line control system

Country Status (1)

Country Link
JP (1) JPS55138944A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60180249A (en) * 1984-01-19 1985-09-14 バロース・コーポレーシヨン Method of operating station having two input-output ports in communication network

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5240288A (en) * 1975-09-27 1977-03-29 Fujitsu Ltd Data highway device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5240288A (en) * 1975-09-27 1977-03-29 Fujitsu Ltd Data highway device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60180249A (en) * 1984-01-19 1985-09-14 バロース・コーポレーシヨン Method of operating station having two input-output ports in communication network
JPH0443455B2 (en) * 1984-01-19 1992-07-16 Unisys Corp

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