JPS5684061A - Test board - Google Patents

Test board

Info

Publication number
JPS5684061A
JPS5684061A JP16032779A JP16032779A JPS5684061A JP S5684061 A JPS5684061 A JP S5684061A JP 16032779 A JP16032779 A JP 16032779A JP 16032779 A JP16032779 A JP 16032779A JP S5684061 A JPS5684061 A JP S5684061A
Authority
JP
Japan
Prior art keywords
circuit
never
incoming trunk
trunk device
switching part
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
JP16032779A
Other languages
Japanese (ja)
Inventor
Wataru Kosuge
Masae Ogoshi
Koji Furukawa
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.)
Hitachi Ltd
Nippon Telegraph and Telephone Corp
Original Assignee
Hitachi 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 Hitachi Ltd, Nippon Telegraph and Telephone Corp filed Critical Hitachi Ltd
Priority to JP16032779A priority Critical patent/JPS5684061A/en
Publication of JPS5684061A publication Critical patent/JPS5684061A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)

Abstract

PURPOSE:To obtain a test board that never troubles terminal users by making an interruption when a circuit to be tested is in a free state at the output point of a picture center. CONSTITUTION:Between public telephone network 2 and incoming trunk device 9, circuit switching part 17 is installed to perform switching operation under the control of controller 13. Circuit switching part 17 functions to disconnect incoming trunk device 9 from public telephone network 2 and to connect testing terminal part 16 to incoming trunk device 9. The operator assigns a circuit to be tested from circuit assignment part 15. Controller 13 puts circuit switching part 17 into operation when the corresponding circuit is free. Therefore, a circuit in use is never interrupted and terminal users are never troubled neither.
JP16032779A 1979-12-12 1979-12-12 Test board Pending JPS5684061A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16032779A JPS5684061A (en) 1979-12-12 1979-12-12 Test board

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16032779A JPS5684061A (en) 1979-12-12 1979-12-12 Test board

Publications (1)

Publication Number Publication Date
JPS5684061A true JPS5684061A (en) 1981-07-09

Family

ID=15712558

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16032779A Pending JPS5684061A (en) 1979-12-12 1979-12-12 Test board

Country Status (1)

Country Link
JP (1) JPS5684061A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6041864A (en) * 1983-08-18 1985-03-05 Panafacom Ltd Voice input and output controller
US4670723A (en) * 1985-03-18 1987-06-02 Tektronix, Inc. Broad band, thin film attenuator and method for construction thereof
JP2009131845A (en) * 2001-04-24 2009-06-18 Three M Innovative Properties Co Reservoir with replenishment entrance for handy type spray gun

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6041864A (en) * 1983-08-18 1985-03-05 Panafacom Ltd Voice input and output controller
US4670723A (en) * 1985-03-18 1987-06-02 Tektronix, Inc. Broad band, thin film attenuator and method for construction thereof
JP2009131845A (en) * 2001-04-24 2009-06-18 Three M Innovative Properties Co Reservoir with replenishment entrance for handy type spray gun

Similar Documents

Publication Publication Date Title
JPS5684061A (en) Test board
JPS52139302A (en) Automatic circuit switching unit
JPS5624866A (en) Sectioning test circuit
JPS5792965A (en) Data communication device
JPS5461806A (en) Audio response unit
JPS57160258A (en) Circuit switching device
JPS5644257A (en) Telephone set
JPS56168464A (en) Automatic dialing device
JPH0317266B2 (en)
JPS57136850A (en) Fault accepting and testing system
JPS5769442A (en) Terminal test system of online communication system
JPS5451702A (en) Automatic power supply cut-off circuit
JPS57104354A (en) Button telephone set
JPS5518122A (en) Test system for subscriber circuit
JPS5744369A (en) Switch box specified connection system
JPS57147367A (en) Conference trunk
JPS56122561A (en) Subscriber line concentration stage testing system
JPS56156056A (en) Discriminating system for incoming call
FR2358074A1 (en) Automatic subscriber line tester - having automatic switching central processor and control and measurement sub-circuits
JPS5647156A (en) Conference telephone release system
JPS5478005A (en) Subscribersigma line control system
JPS57168565A (en) Special common-battery service system
JPS6486751A (en) Line switching device
JPS57103458A (en) Control system of substitutive circuit for originating
JPS6453676A (en) Terminal calling control device