JPS55147852A - Transmission line controlling system in data transmission system - Google Patents

Transmission line controlling system in data transmission system

Info

Publication number
JPS55147852A
JPS55147852A JP5586979A JP5586979A JPS55147852A JP S55147852 A JPS55147852 A JP S55147852A JP 5586979 A JP5586979 A JP 5586979A JP 5586979 A JP5586979 A JP 5586979A JP S55147852 A JPS55147852 A JP S55147852A
Authority
JP
Japan
Prior art keywords
unit
svc12
data transmission
supervisory unit
line controlling
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
JP5586979A
Other languages
Japanese (ja)
Inventor
Kenichi Yoshikawa
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 JP5586979A priority Critical patent/JPS55147852A/en
Publication of JPS55147852A publication Critical patent/JPS55147852A/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)

Abstract

PURPOSE:To reduce the software constitution required for the system, by providing a supervisory unit having monitor and control functions for the system independently of the data transmission unit. CONSTITUTION:Supervisory unit SVC12 forms a folded loop at a system start time to transmit monitor signal TEST1 to station ST101, and normal connection is performed for normalcy, and further, a folded loop is formed between supervisory unit SVC12 and next station ST102. And thus, stations are tested successively. Then, supervisory unit SVC12 transmits the monitor signal to test stations in case that data passing through the unit itself at every fixed time does not exist for a fixed time.
JP5586979A 1979-05-08 1979-05-08 Transmission line controlling system in data transmission system Pending JPS55147852A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5586979A JPS55147852A (en) 1979-05-08 1979-05-08 Transmission line controlling system in data transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5586979A JPS55147852A (en) 1979-05-08 1979-05-08 Transmission line controlling system in data transmission system

Publications (1)

Publication Number Publication Date
JPS55147852A true JPS55147852A (en) 1980-11-18

Family

ID=13011080

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5586979A Pending JPS55147852A (en) 1979-05-08 1979-05-08 Transmission line controlling system in data transmission system

Country Status (1)

Country Link
JP (1) JPS55147852A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5992650A (en) * 1982-11-19 1984-05-28 Fujitsu Ltd Decentralized dual monitoring system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5992650A (en) * 1982-11-19 1984-05-28 Fujitsu Ltd Decentralized dual monitoring system
JPH0122783B2 (en) * 1982-11-19 1989-04-27 Fujitsu Ltd

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