JPS5274206A - Line concentrating switch non-conducting fault detecting unit in line concentrating type subscriber carrier system - Google Patents

Line concentrating switch non-conducting fault detecting unit in line concentrating type subscriber carrier system

Info

Publication number
JPS5274206A
JPS5274206A JP15110775A JP15110775A JPS5274206A JP S5274206 A JPS5274206 A JP S5274206A JP 15110775 A JP15110775 A JP 15110775A JP 15110775 A JP15110775 A JP 15110775A JP S5274206 A JPS5274206 A JP S5274206A
Authority
JP
Japan
Prior art keywords
line concentrating
detecting unit
carrier system
fault detecting
switch non
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
JP15110775A
Other languages
Japanese (ja)
Inventor
Kenichi Nakajima
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP15110775A priority Critical patent/JPS5274206A/en
Publication of JPS5274206A publication Critical patent/JPS5274206A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
    • H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
    • H04M3/30—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)

Abstract

PURPOSE:To make the circuit simple, by detecting non-conductive fault of line concentrating switch and making possible the control unit to be switched and connected to other line for the concentrating switch.
JP15110775A 1975-12-17 1975-12-17 Line concentrating switch non-conducting fault detecting unit in line concentrating type subscriber carrier system Pending JPS5274206A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15110775A JPS5274206A (en) 1975-12-17 1975-12-17 Line concentrating switch non-conducting fault detecting unit in line concentrating type subscriber carrier system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15110775A JPS5274206A (en) 1975-12-17 1975-12-17 Line concentrating switch non-conducting fault detecting unit in line concentrating type subscriber carrier system

Publications (1)

Publication Number Publication Date
JPS5274206A true JPS5274206A (en) 1977-06-22

Family

ID=15511492

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15110775A Pending JPS5274206A (en) 1975-12-17 1975-12-17 Line concentrating switch non-conducting fault detecting unit in line concentrating type subscriber carrier system

Country Status (1)

Country Link
JP (1) JPS5274206A (en)

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