JPS5666987A - Operation system of data exchange equipment - Google Patents

Operation system of data exchange equipment

Info

Publication number
JPS5666987A
JPS5666987A JP14251979A JP14251979A JPS5666987A JP S5666987 A JPS5666987 A JP S5666987A JP 14251979 A JP14251979 A JP 14251979A JP 14251979 A JP14251979 A JP 14251979A JP S5666987 A JPS5666987 A JP S5666987A
Authority
JP
Japan
Prior art keywords
line system
data exchange
operation system
exchange equipment
interference
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
JP14251979A
Other languages
Japanese (ja)
Inventor
Kiichiro Ito
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 JP14251979A priority Critical patent/JPS5666987A/en
Publication of JPS5666987A publication Critical patent/JPS5666987A/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
    • 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 programme using multi-processor systems
    • H04Q3/54558—Redundancy, stand-by

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

PURPOSE:To use the off-line system as a debug system without possibility of interference to the on-line system, by means of the operation mode of a duplex system. CONSTITUTION:One isolation signal S of ''Matecp Isolate'' is added are on the IO bus HIB, also the split keys K0, K1 are provided on each switch controller SWC, and the system is controlled as shown in Table 1 in accordance with combination of the status. The access becomes possible by sending out an isolation signal from the on-line system CP (CP0), and also turning on the split key K1 by SWC1. Also, SWC0 only is inhibited by CP1 of the off-line system, and interference from the off- line system to the on-line system is not caused.
JP14251979A 1979-11-02 1979-11-02 Operation system of data exchange equipment Pending JPS5666987A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14251979A JPS5666987A (en) 1979-11-02 1979-11-02 Operation system of data exchange equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14251979A JPS5666987A (en) 1979-11-02 1979-11-02 Operation system of data exchange equipment

Publications (1)

Publication Number Publication Date
JPS5666987A true JPS5666987A (en) 1981-06-05

Family

ID=15317237

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14251979A Pending JPS5666987A (en) 1979-11-02 1979-11-02 Operation system of data exchange equipment

Country Status (1)

Country Link
JP (1) JPS5666987A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6048639A (en) * 1983-08-29 1985-03-16 Fuji Electric Co Ltd Information transmission system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6048639A (en) * 1983-08-29 1985-03-16 Fuji Electric Co Ltd Information transmission system
JPH0584096B2 (en) * 1983-08-29 1993-11-30 Fuji Denki Kk

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