JPS6342978B2 - - Google Patents

Info

Publication number
JPS6342978B2
JPS6342978B2 JP4741281A JP4741281A JPS6342978B2 JP S6342978 B2 JPS6342978 B2 JP S6342978B2 JP 4741281 A JP4741281 A JP 4741281A JP 4741281 A JP4741281 A JP 4741281A JP S6342978 B2 JPS6342978 B2 JP S6342978B2
Authority
JP
Japan
Prior art keywords
line
signal
circuit
output
checked
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.)
Expired
Application number
JP4741281A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57162535A (en
Inventor
Ryuichi Kondo
Jiro Hisayuki
Sadayuki Ueki
Kozo Suchi
Junichi Tsuda
Kenji Takano
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 JP4741281A priority Critical patent/JPS57162535A/ja
Publication of JPS57162535A publication Critical patent/JPS57162535A/ja
Publication of JPS6342978B2 publication Critical patent/JPS6342978B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/74—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for increasing reliability, e.g. using redundant or spare channels or apparatus

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Locating Faults (AREA)
JP4741281A 1981-03-31 1981-03-31 Detecting system of cable fault Granted JPS57162535A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4741281A JPS57162535A (en) 1981-03-31 1981-03-31 Detecting system of cable fault

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4741281A JPS57162535A (en) 1981-03-31 1981-03-31 Detecting system of cable fault

Publications (2)

Publication Number Publication Date
JPS57162535A JPS57162535A (en) 1982-10-06
JPS6342978B2 true JPS6342978B2 (fi) 1988-08-26

Family

ID=12774415

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4741281A Granted JPS57162535A (en) 1981-03-31 1981-03-31 Detecting system of cable fault

Country Status (1)

Country Link
JP (1) JPS57162535A (fi)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5967738A (ja) * 1982-10-12 1984-04-17 Tokyo Sogo Keibi Hoshiyou Kk 通信回線の切断監視装置
JPH0614090B2 (ja) * 1984-07-05 1994-02-23 株式会社東芝 点検方式
JPH01162439A (ja) * 1987-12-18 1989-06-26 Fujitsu Ltd ケーブル障害検出方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS541599U (fi) * 1977-06-02 1979-01-08

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS541599U (fi) * 1977-06-02 1979-01-08

Also Published As

Publication number Publication date
JPS57162535A (en) 1982-10-06

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