JPS6451853A - Duplicated equipment for electronic exchange - Google Patents

Duplicated equipment for electronic exchange

Info

Publication number
JPS6451853A
JPS6451853A JP21096487A JP21096487A JPS6451853A JP S6451853 A JPS6451853 A JP S6451853A JP 21096487 A JP21096487 A JP 21096487A JP 21096487 A JP21096487 A JP 21096487A JP S6451853 A JPS6451853 A JP S6451853A
Authority
JP
Japan
Prior art keywords
package
missing
circuit
equipment
interface
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
JP21096487A
Other languages
Japanese (ja)
Inventor
Tetsushige Kashima
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
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 filed Critical NEC Corp
Priority to JP21096487A priority Critical patent/JPS6451853A/en
Publication of JPS6451853A publication Critical patent/JPS6451853A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To avoid the connection of a system with its control package lost thereto by providing a package missing detection circuit detecting a missing control circuit package and a gate circuit interrupting the sending of an act signal to a communication equipment to an interface package. CONSTITUTION:A package missing detection circuit 7 detecting the missing of the control circuit package 8 with a control circuit 9 mounted thereupon and a gate circuit 5 interrupting the sending of the act signal to the communication equipment 1 when the missing of package is detected are provided to an interface package 3 accommodating the interface circuit 4. Thus, the communication equipment receives only the act signal from the equipment switched by the command of the host device and is connected to the equipment of the switched system.
JP21096487A 1987-08-24 1987-08-24 Duplicated equipment for electronic exchange Pending JPS6451853A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21096487A JPS6451853A (en) 1987-08-24 1987-08-24 Duplicated equipment for electronic exchange

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21096487A JPS6451853A (en) 1987-08-24 1987-08-24 Duplicated equipment for electronic exchange

Publications (1)

Publication Number Publication Date
JPS6451853A true JPS6451853A (en) 1989-02-28

Family

ID=16598030

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21096487A Pending JPS6451853A (en) 1987-08-24 1987-08-24 Duplicated equipment for electronic exchange

Country Status (1)

Country Link
JP (1) JPS6451853A (en)

Similar Documents

Publication Publication Date Title
EP0128574A3 (en) Electrical load monitoring system and method
EP0129794A3 (en) Remote control system for electrical and electronic devices, especially for electronic consumer products
JPS5713530A (en) Data transfer fault processing system
JPS6451853A (en) Duplicated equipment for electronic exchange
JPS6439869A (en) Network control unit
JPS5742248A (en) Switching device for communication system
JPS5676826A (en) Data transfer control system
JPS5624848A (en) Communication control device
JPS57188192A (en) Remote monitoring and controlling device
JPS5676801A (en) Plant control device
JPS5441002A (en) Data signal control system
JPS55123704A (en) Maintenance device of control unit
JPS6481540A (en) Reception signal switching device
JPS56164695A (en) Key telephone set
JPS6489720A (en) Line switching device
JPS5572260A (en) Input-output device
JPS56134871A (en) Data communication system
JPS5742212A (en) Mic module
JPS642431A (en) Voice communication equipment
JPS57192150A (en) Transmission and reception circuit
JPS6482720A (en) Dual system for communication line
JPS5786928A (en) Fault detection system for input and output controlling operation
JPS56121124A (en) Bus control system
JPS57206969A (en) Fault deciding device of computer system
JPS5688521A (en) Operation informing system