JPS5552692A - Controller switching system - Google Patents

Controller switching system

Info

Publication number
JPS5552692A
JPS5552692A JP12596478A JP12596478A JPS5552692A JP S5552692 A JPS5552692 A JP S5552692A JP 12596478 A JP12596478 A JP 12596478A JP 12596478 A JP12596478 A JP 12596478A JP S5552692 A JPS5552692 A JP S5552692A
Authority
JP
Japan
Prior art keywords
unit
rank
line
processor
units
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
JP12596478A
Other languages
Japanese (ja)
Inventor
Tomihide Seo
Yoshitaka Ito
Tetsuji Ogawa
Susumu Obara
Toshimasa Fukui
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
Hitachi Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
Original Assignee
Fujitsu Ltd
Hitachi Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
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 Fujitsu Ltd, Hitachi Ltd, NEC Corp, Nippon Telegraph and Telephone Corp, Oki Electric Industry Co Ltd, Nippon Electric Co Ltd filed Critical Fujitsu Ltd
Priority to JP12596478A priority Critical patent/JPS5552692A/en
Publication of JPS5552692A publication Critical patent/JPS5552692A/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 programme

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Hardware Redundancy (AREA)
  • Multi Processors (AREA)

Abstract

PURPOSE:To lessen the load of the higher-rank unit as well as to simplify the software structure by installing the interface which controls other lower-rank units by the processor introduced to the lower-rank unit and thus giving the off-line type diagnosis to other lower-rank units. CONSTITUTION:Signal reception distributing devices 20, 21... are connected to the input/output bus of CPU10, and unit 40, for example, among lower-rank units 30 and 40 under the control of those distributing devices incorporates processor 41. Unit 40 possesses information line 55 of the interface same as information line 51 and can be connected to information line 54 via the change-over switch. And line 55 can have the transmission and reception of the same control signal and data as line 51 which distributes the input/output control command given from CPU10 by the control of processor 41. Thus the diagnosis can be given to unit 30 from unit 40 by connecting lines 55 and 54 via the change-over switch when unit has some fault. In this way, the load of the higher-rank unit can be lessened, at the same time realizing simplification for the software structure.
JP12596478A 1978-10-12 1978-10-12 Controller switching system Pending JPS5552692A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12596478A JPS5552692A (en) 1978-10-12 1978-10-12 Controller switching system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12596478A JPS5552692A (en) 1978-10-12 1978-10-12 Controller switching system

Publications (1)

Publication Number Publication Date
JPS5552692A true JPS5552692A (en) 1980-04-17

Family

ID=14923330

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12596478A Pending JPS5552692A (en) 1978-10-12 1978-10-12 Controller switching system

Country Status (1)

Country Link
JP (1) JPS5552692A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0171784A2 (en) * 1984-08-16 1986-02-19 Siemens Aktiengesellschaft Circuit arrangement for telecommunication installations, in particular telephone exchanges with centralized and/or decentralized information-processing control circuits

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0171784A2 (en) * 1984-08-16 1986-02-19 Siemens Aktiengesellschaft Circuit arrangement for telecommunication installations, in particular telephone exchanges with centralized and/or decentralized information-processing control circuits

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