JPS53135211A - Emergency control corcuit of electronic exchange - Google Patents

Emergency control corcuit of electronic exchange

Info

Publication number
JPS53135211A
JPS53135211A JP5030977A JP5030977A JPS53135211A JP S53135211 A JPS53135211 A JP S53135211A JP 5030977 A JP5030977 A JP 5030977A JP 5030977 A JP5030977 A JP 5030977A JP S53135211 A JPS53135211 A JP S53135211A
Authority
JP
Japan
Prior art keywords
corcuit
emergency control
electronic exchange
price
stand
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.)
Granted
Application number
JP5030977A
Other languages
Japanese (ja)
Other versions
JPS5941345B2 (en
Inventor
Yoshio Inui
Osamu Kawai
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 JP5030977A priority Critical patent/JPS5941345B2/en
Publication of JPS53135211A publication Critical patent/JPS53135211A/en
Publication of JPS5941345B2 publication Critical patent/JPS5941345B2/en
Expired 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Exchange Systems With Centralized Control (AREA)

Abstract

PURPOSE:To maintain the high reliability of the exchanges system and to reduce the price of the system, by periodically diagnosing a plural number of emergency operation parts and by making them perform in-use and stand-by operations.
JP5030977A 1977-04-30 1977-04-30 Electronic exchange emergency control circuit Expired JPS5941345B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5030977A JPS5941345B2 (en) 1977-04-30 1977-04-30 Electronic exchange emergency control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5030977A JPS5941345B2 (en) 1977-04-30 1977-04-30 Electronic exchange emergency control circuit

Publications (2)

Publication Number Publication Date
JPS53135211A true JPS53135211A (en) 1978-11-25
JPS5941345B2 JPS5941345B2 (en) 1984-10-06

Family

ID=12855283

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5030977A Expired JPS5941345B2 (en) 1977-04-30 1977-04-30 Electronic exchange emergency control circuit

Country Status (1)

Country Link
JP (1) JPS5941345B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56120286A (en) * 1980-02-28 1981-09-21 Nec Corp Duplex system for control circuit for system constitution

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56120286A (en) * 1980-02-28 1981-09-21 Nec Corp Duplex system for control circuit for system constitution

Also Published As

Publication number Publication date
JPS5941345B2 (en) 1984-10-06

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