JPS5496904A - Loop transmission system - Google Patents

Loop transmission system

Info

Publication number
JPS5496904A
JPS5496904A JP358978A JP358978A JPS5496904A JP S5496904 A JPS5496904 A JP S5496904A JP 358978 A JP358978 A JP 358978A JP 358978 A JP358978 A JP 358978A JP S5496904 A JPS5496904 A JP S5496904A
Authority
JP
Japan
Prior art keywords
station
loop transmission
short break
signal
self
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
JP358978A
Other languages
Japanese (ja)
Other versions
JPS5923503B2 (en
Inventor
Yukio Saito
Masayuki Eguchi
Akira Watanabe
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP53003589A priority Critical patent/JPS5923503B2/en
Publication of JPS5496904A publication Critical patent/JPS5496904A/en
Publication of JPS5923503B2 publication Critical patent/JPS5923503B2/en
Expired 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 enhance the maintenance performance for the loop transmission system by giving the forced cut-off for a fixed time to the signals transmitted from the self-station right before by-passing, detecting the short break by the short break detector, and generating the alarm signal to transmit it to the loop transmission line. CONSTITUTION:Station unit Su cuts off forcedly the signals which send out the signal or carrier transmitted by the self-station right before bypassing onto the loop for a fixed time Ti via timer 509 or the like. And the short break during which the reception input signal is erased for the fixed time TCOFF (O<Ti-e<=TCOFF<= Ti+epsilon2, epsilon1 and epsilon2 : integers) through short break detector 503. When the short break is detected, the alarm signal to which the predesignated self-station signal is added is generated to decide the number of the station unit number by-passed by the station number added to the received alarm signal and to be transmitted to the loop transmission line. Thus, the maintenance performance can be enhanced for the loop transmission system.
JP53003589A 1978-01-17 1978-01-17 Loop transmission method Expired JPS5923503B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53003589A JPS5923503B2 (en) 1978-01-17 1978-01-17 Loop transmission method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53003589A JPS5923503B2 (en) 1978-01-17 1978-01-17 Loop transmission method

Publications (2)

Publication Number Publication Date
JPS5496904A true JPS5496904A (en) 1979-07-31
JPS5923503B2 JPS5923503B2 (en) 1984-06-02

Family

ID=11561642

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53003589A Expired JPS5923503B2 (en) 1978-01-17 1978-01-17 Loop transmission method

Country Status (1)

Country Link
JP (1) JPS5923503B2 (en)

Also Published As

Publication number Publication date
JPS5923503B2 (en) 1984-06-02

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