JPS5773555A - Failure detection system - Google Patents

Failure detection system

Info

Publication number
JPS5773555A
JPS5773555A JP14899280A JP14899280A JPS5773555A JP S5773555 A JPS5773555 A JP S5773555A JP 14899280 A JP14899280 A JP 14899280A JP 14899280 A JP14899280 A JP 14899280A JP S5773555 A JPS5773555 A JP S5773555A
Authority
JP
Japan
Prior art keywords
monitor device
external monitor
call
signal
timer
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
JP14899280A
Other languages
Japanese (ja)
Inventor
Katsuo Uyama
Akira Onodera
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 JP14899280A priority Critical patent/JPS5773555A/en
Publication of JPS5773555A publication Critical patent/JPS5773555A/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
    • H04M3/32—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for lines between exchanges
    • H04M3/323—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for lines between exchanges for the arrangements providing the connection (test connection, test call, call simulation)

Landscapes

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

Abstract

PURPOSE:To automatically detect a failure in an external monitor device, by monitoring various signals transmitted at each stage of test call from the external monitor device with a timer. CONSTITUTION:An external monitor device 4 produces a test call to an electronic exchanger 2 with a specified period and transmits a call out signal, selection signal and end of call confirming signal every time. The electronic exchanger 2 is provided with a timer corresponding to the reception function of each signal transmitted from the external monitor device 4. The timer monitors various signals transmitted at each stage of test call by the device 4 to detect failures in the external monitor device 4.
JP14899280A 1980-10-24 1980-10-24 Failure detection system Pending JPS5773555A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14899280A JPS5773555A (en) 1980-10-24 1980-10-24 Failure detection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14899280A JPS5773555A (en) 1980-10-24 1980-10-24 Failure detection system

Publications (1)

Publication Number Publication Date
JPS5773555A true JPS5773555A (en) 1982-05-08

Family

ID=15465272

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14899280A Pending JPS5773555A (en) 1980-10-24 1980-10-24 Failure detection system

Country Status (1)

Country Link
JP (1) JPS5773555A (en)

Similar Documents

Publication Publication Date Title
JPS5773620A (en) Method and device for detecting fault
WO1998030987A3 (en) Remote detecting system and method
JPS5773555A (en) Failure detection system
JPS5539451A (en) Fault detection system for remote monitor control device
JPS55147849A (en) Fault monitoring system
JPS53132934A (en) Detector for abnormal state of data transmitter
JPS5434699A (en) Urgento display system
JPS6426176A (en) Automatic and real time disturbance monitoring/checking circuit network for microwave landing system
JPS5654179A (en) Automatic monitoring method for television picture
JPS543416A (en) Detection system for circuit fault
JPS547961A (en) Running condition monitoring system
JPS5490470A (en) Signal transmission system
JPS5394810A (en) Signal monitor system
GARKAVENKO et al. Completing a minimal set of test points for detecting failures of any multiplicity in continuous systems subject to checking
JPS5471283A (en) Remote monitor control system
JPS648747A (en) Polling system
JPS5431884A (en) Abnormality detecting apparatus in transmission system
JPS6468847A (en) Abnormality monitoring device
JPS5421215A (en) Power monitor
JPS57164640A (en) Remote supervisory system
JPS55147845A (en) Receiver monitoring system
JPS545546A (en) Desconnection detector for transmission line
JPS57156570A (en) Measuring device
JPS54148409A (en) Automatic return system for pcm transmission line
JPS5761369A (en) Automatic test system of terminal equipment