JPS55123286A - Switching system of electronic switchboard control part - Google Patents

Switching system of electronic switchboard control part

Info

Publication number
JPS55123286A
JPS55123286A JP3025979A JP3025979A JPS55123286A JP S55123286 A JPS55123286 A JP S55123286A JP 3025979 A JP3025979 A JP 3025979A JP 3025979 A JP3025979 A JP 3025979A JP S55123286 A JPS55123286 A JP S55123286A
Authority
JP
Japan
Prior art keywords
control part
switching
stand
central control
switching system
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
JP3025979A
Other languages
Japanese (ja)
Inventor
Tomio 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.)
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 JP3025979A priority Critical patent/JPS55123286A/en
Publication of JPS55123286A publication Critical patent/JPS55123286A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/54—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised
    • H04Q3/545—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised using a stored program
    • H04Q3/54541—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised using a stored program using multi-processor systems
    • H04Q3/54558—Redundancy, stand-by

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Exchange Systems With Centralized Control (AREA)

Abstract

PURPOSE:To simplify the recovery of a unit control part from a fault, by providing a switching method with exercises control over the unit control part even from a stand-by side central control part. CONSTITUTION:In-use/stand-by doubled central control parts 1 and 2 are connected via buses 8 and 9 to switching circuits 6 and 7, which switch buses to central control part 1 or 2 by switching signal 10 from in-use/stand-by switching control part 3 and connect them to unit control parts 4 and 5. Both the switching circuit, having the function of expanding output instruction information from central control parts, give effect the switching to a bus system (stand-by side) reciprocal with the switching signal from switching control part 3.
JP3025979A 1979-03-15 1979-03-15 Switching system of electronic switchboard control part Pending JPS55123286A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3025979A JPS55123286A (en) 1979-03-15 1979-03-15 Switching system of electronic switchboard control part

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3025979A JPS55123286A (en) 1979-03-15 1979-03-15 Switching system of electronic switchboard control part

Publications (1)

Publication Number Publication Date
JPS55123286A true JPS55123286A (en) 1980-09-22

Family

ID=12298702

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3025979A Pending JPS55123286A (en) 1979-03-15 1979-03-15 Switching system of electronic switchboard control part

Country Status (1)

Country Link
JP (1) JPS55123286A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0198357A (en) * 1987-10-09 1989-04-17 Nec Corp Common bus fault processing system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0198357A (en) * 1987-10-09 1989-04-17 Nec Corp Common bus fault processing system

Similar Documents

Publication Publication Date Title
JPS54138350A (en) Fault separation system for logic circuit
EP0317472A3 (en) Logic redundancy circuit scheme
JPS5635202A (en) Multiplex control device
JPS5595489A (en) Remote multiplex transmission controller
JPS5432938A (en) Test monitor system of on-line data communication system
JPS5446498A (en) Operation test circuit of centralized annunciator
JPS6436354A (en) System for changing constitution of memory
JPS5394841A (en) Switching system for circuit corresponding part of communication control un it
JPS56104551A (en) Line switching system
JPS6428937A (en) Integrated circuit
JPS5640936A (en) Initial diagnosis system for multiplex bus constitution system
JPS56135347A (en) Switch system on steering wheel
JPS5595446A (en) Back-up system
JPS5485070A (en) Operation adjustment circuit of on timer and off timer
JPS5392614A (en) Transmission switching system of microwave multiple radio
JPS55132142A (en) Circuit supervisory switching system of multiconstitution unit
JPS54127615A (en) Switching system for communication circuit
JPS6473856A (en) Telecontroller
JPS552308A (en) Signal input circuit
KR910013959A (en) T1 (North American) Repeater Line Matching Device of Switching System
JPS5333518A (en) Data circuit switching system
JPS5447975A (en) Control circuit
ES456209A1 (en) Automation system for government and control of electrogen groups. (Machine-translation by Google Translate, not legally binding)
JPS5331929A (en) Fault detection system for clock generator circuit
JPS5617551A (en) Spare switching device