JPS57106251A - Monitor system - Google Patents

Monitor system

Info

Publication number
JPS57106251A
JPS57106251A JP18256680A JP18256680A JPS57106251A JP S57106251 A JPS57106251 A JP S57106251A JP 18256680 A JP18256680 A JP 18256680A JP 18256680 A JP18256680 A JP 18256680A JP S57106251 A JPS57106251 A JP S57106251A
Authority
JP
Japan
Prior art keywords
fault
time
section
station
succeeding
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
JP18256680A
Other languages
Japanese (ja)
Other versions
JPS6347019B2 (en
Inventor
Tadao Ogawa
Toshiro Kato
Takemi Endo
Masayuki Sakamoto
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
NTT Inc
Original Assignee
Fujitsu Ltd
Nippon Telegraph and Telephone 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 Fujitsu Ltd, Nippon Telegraph and Telephone Corp filed Critical Fujitsu Ltd
Priority to JP18256680A priority Critical patent/JPS57106251A/en
Publication of JPS57106251A publication Critical patent/JPS57106251A/en
Publication of JPS6347019B2 publication Critical patent/JPS6347019B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/40—Monitoring; Testing of relay systems
    • H04B17/401—Monitoring; Testing of relay systems with selective localization
    • H04B17/406—Monitoring; Testing of relay systems with selective localization using coded addresses

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Dc Digital Transmission (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Small-Scale Networks (AREA)

Abstract

PURPOSE:To prevent a fault of the preceding section from being erroneously detected as a fault of the succeeding section, by setting a longer fault detection time in accordance with the succeeding transmission section in the digital transmission system. CONSTITUTION:Many transmission sections each of which consists of a transmitting terminal station T, a repeating transmission line L, and a receiving terminal station R are connected in tandem to constitute a long distance digital transmission system. A fault signal 2 occurs at a fault occurrence time t1 in the preceding fault section, and fault information pattern 3 generated in the receiving terminal station in the fault section occurs at a fault detection time t2 in this station, and a time T1=t2-t1 is a fault detection time in the receiving terminal station in the fault section and a fault signal duration in the succeeding station. When a fault detection time in the succeeding station is denoted as a time t3, a time T2=t3-t1 is a fault detection time in the succeeding station. In this case, the time T2 is set to a value longer than the time T1.
JP18256680A 1980-12-22 1980-12-22 Monitor system Granted JPS57106251A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18256680A JPS57106251A (en) 1980-12-22 1980-12-22 Monitor system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18256680A JPS57106251A (en) 1980-12-22 1980-12-22 Monitor system

Publications (2)

Publication Number Publication Date
JPS57106251A true JPS57106251A (en) 1982-07-02
JPS6347019B2 JPS6347019B2 (en) 1988-09-20

Family

ID=16120511

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18256680A Granted JPS57106251A (en) 1980-12-22 1980-12-22 Monitor system

Country Status (1)

Country Link
JP (1) JPS57106251A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59214347A (en) * 1983-05-19 1984-12-04 Fujitsu Ltd Prevention system against reception of erroneous warning data
JPS6033764A (en) * 1983-08-04 1985-02-21 Kokusai Denshin Denwa Co Ltd <Kdd> System for supervising repeater
JPS6096872U (en) * 1983-12-08 1985-07-02 松下電器産業株式会社 Printed wiring board equipment
JPH07107055A (en) * 1993-10-05 1995-04-21 Nec Corp Fault detection circuit

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63256223A (en) * 1987-04-10 1988-10-24 Kusakabe Denki Kk Strip accumulator

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5073909U (en) * 1973-11-07 1975-06-28
JPS5222201U (en) * 1975-08-06 1977-02-17
JPS54707U (en) * 1977-06-04 1979-01-06
JPS55106382U (en) * 1979-01-20 1980-07-25

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5073909U (en) * 1973-11-07 1975-06-28
JPS5222201U (en) * 1975-08-06 1977-02-17
JPS54707U (en) * 1977-06-04 1979-01-06
JPS55106382U (en) * 1979-01-20 1980-07-25

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59214347A (en) * 1983-05-19 1984-12-04 Fujitsu Ltd Prevention system against reception of erroneous warning data
JPS6033764A (en) * 1983-08-04 1985-02-21 Kokusai Denshin Denwa Co Ltd <Kdd> System for supervising repeater
JPS6096872U (en) * 1983-12-08 1985-07-02 松下電器産業株式会社 Printed wiring board equipment
JPH07107055A (en) * 1993-10-05 1995-04-21 Nec Corp Fault detection circuit

Also Published As

Publication number Publication date
JPS6347019B2 (en) 1988-09-20

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