JPS58111553A - External monitoring and controlling system for exchange system - Google Patents

Abstract

PURPOSE:To prevent the operation of unnecessary alarm and lamp display, by stopping the operation of an external monitor automatically when the system is switched to a simple spare device. CONSTITUTION:When a processor 5 detects a failure of the system not possible for exchange operation, a simple spare device changeover switch 11 is driven, a K relay 10 is activated, its contact k1 is controlled to switch the connection between an incoming trunk device 1 and an outgoing trunk 2 by a simple spare device 9. Further, a brake contact k2 of the k relay 10 turn-off ground required for the operation of an external monitor 6. Thus, when the exchange system is switched to the device 9 due to any cause, since the operation of the device 6 is stopped, allowing to prevent the operation of unnecessary alarm and lamp display.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides an external monitoring control method for a switching system that automatically stops the external monitoring function when switching to a simple standby device due to a system failure.

External monitoring of the replacement system is performed by a monitoring device K that is independent of the replacement system, but even when the replacement system is switched to a simple standby device due to a failure detected, conventionally the monitoring device remains the same as the replacement system. Performing monitoring operations.

Therefore, even if the replacement system is started from the monitoring device in this state, a normal response will not be obtained, so it will be determined that there is a problem with the replacement system, and the alarm will sound and the fault indicator lamp will sound even though the system has already been notified of a problem. The disadvantage was that it would cause the ignition to occur.

An object of the present invention is to eliminate the above-mentioned drawbacks of the prior art, and to improve the maintainability of the exchange by automatically stopping the operation of the external monitoring device when the system is switched to a simple standby device. The purpose of the present invention is to provide an external monitoring and control method.

The present invention is characterized by providing means for stopping the operation of the external monitoring device using the switching signal when the exchange system is switched to the simple standby device.

The present invention will be explained below with reference to an embodiment shown in Fig. 311. In the figure, a replacement switch 5 is driven by a processing device 5 via a replacement switch driving device 4, and has a function of connecting an incoming trunk device 1 and an outgoing trunk device 2. The external monitoring device 6 periodically instructs the processing device 5 to activate the external monitoring signal 11117 and connect the external monitoring signal monitoring line 8, and monitors that the connection is normal (by monitoring that the switching system is normal). Checking the gender.

On the other hand, when the processing device 5 detects an abnormality in the system that prevents the replacement operation from continuing, it drives the simple spare device changeover switch 11 and operates the r relay 10, thereby controlling the h1@
and switches the connection between the incoming trunk device 1 and the outgoing trunk device 2 to the simple standby device 9.

In this practical example, the operation of this I relay 10 is utilized, and this relay 10 is connected to another one. Provide two break contacts,
This contact point is configured to supply electrical energy necessary for the operation of the external monitoring device 6 at the time of operation.

Therefore, due to some abnormality, the replacement system may
When the switch is switched to , the operation of the external monitoring device 6 is stopped by turning off the contact 2 .

Unnecessary alarm lamp display operation can be prevented.

As is clear from the above embodiments, according to the present invention, the external monitoring device can be automatically stopped when switching to a simple standby device in the event of a system failure, thereby improving maintainability. .

[Brief explanation of the drawing]

The figure is a block diagram showing an embodiment in which the present invention is applied to a switching system equipped with a simple standby device. 1・・・・・・・・・・Incoming trunk device 2・・・・・
−・・・・Output trunk device 3・・・・・・−・・・・・・
Replacement switch 4...Replacement switch drive device 5---M II device
6...External ti*t9...--
Simple spare equipment 10...g relay 11...
...Simple spare equipment changeover switch Jc1, &2...
K Relay grade 5-33-1 Shiba, Minato-ku, Tokyo ■Applicant Fujitsu Ltd. 1015 Kamiodanaka, Nakahara-ku, Kawasaki City

Claims (1)

[Claims] In an external monitoring control method in which a replacement system equipped with a function of switching its operation to a simple standby device to continue operation in the event of a failure is monitored by an external monitoring device that operates independently of the replacement system, The above-mentioned external monitor-1! is automatically activated by the switching signal used for switching to the above-mentioned simple standby device! 1. A system for external monitoring and control of an exchange system, characterized in that means for stopping the operation of the exchange system is provided, and the operation of the means prevents monitoring of the exchange system from occurring in the event of a failure of the exchange system.