JPS54510A - Fault identification system - Google Patents

Fault identification system

Info

Publication number
JPS54510A
JPS54510A JP6488477A JP6488477A JPS54510A JP S54510 A JPS54510 A JP S54510A JP 6488477 A JP6488477 A JP 6488477A JP 6488477 A JP6488477 A JP 6488477A JP S54510 A JPS54510 A JP S54510A
Authority
JP
Japan
Prior art keywords
identification system
fault identification
failure
unattended
grasp
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
JP6488477A
Other languages
Japanese (ja)
Inventor
Katsunori Tsukane
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
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP6488477A priority Critical patent/JPS54510A/en
Publication of JPS54510A publication Critical patent/JPS54510A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/08—Indicating faults in circuits or apparatus

Landscapes

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

Abstract

PURPOSE:To enable to grasp the presence of failure and its content with a call by the maintenance personnel, by providing a failure identifying unit given for incoming numbers with an unattended exchanging station.
JP6488477A 1977-06-03 1977-06-03 Fault identification system Pending JPS54510A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6488477A JPS54510A (en) 1977-06-03 1977-06-03 Fault identification system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6488477A JPS54510A (en) 1977-06-03 1977-06-03 Fault identification system

Publications (1)

Publication Number Publication Date
JPS54510A true JPS54510A (en) 1979-01-05

Family

ID=13270970

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6488477A Pending JPS54510A (en) 1977-06-03 1977-06-03 Fault identification system

Country Status (1)

Country Link
JP (1) JPS54510A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55131069U (en) * 1979-03-10 1980-09-17

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4933505A (en) * 1972-07-26 1974-03-28

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4933505A (en) * 1972-07-26 1974-03-28

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55131069U (en) * 1979-03-10 1980-09-17

Similar Documents

Publication Publication Date Title
JPS5394130A (en) Printing recorder
JPS5395480A (en) Accident information device
JPS5398709A (en) Test system for communicating line
JPS53128904A (en) Data communication device
JPS53120208A (en) Remote control test system for subscriber line
JPS5397188A (en) Data transmission system
JPS5797755A (en) Fault monitor system
JPS53132929A (en) Supervisory unit for transmitting-receiving operation of data transmitter
JPS53124005A (en) Monitor system for subscriber line
JPS533704A (en) Photo-fiber transmission system
JPS53131705A (en) Automatic telephone exchange system
JPS52146104A (en) Line monitoring system
JPS53100701A (en) Transmission relay monitor system for optical pcm group
JPS5420606A (en) Detection system for link fault
JPS5378709A (en) Fault monitoring system
JPS5418604A (en) Optical communication system
JPS53104090A (en) Calling system for remote supervisory controller
JPS5393713A (en) Collating system for trunk number
JPS5429907A (en) Detection system for trunk invalidity suspension
JPS5413202A (en) Check system for telephoe exchanging line
JPS5342508A (en) Automatic test system for telephone lines
JPS5436113A (en) Failure transfer system for non-attendant station
JPS5372402A (en) Loop communication system
JPS53120297A (en) Intra-train display system for train station entrance number line
JPS5436112A (en) Remote test system for non-attendant station