JPS60117857A - Power supply interruption notice system of switchboard - Google Patents

Abstract

PURPOSE:To discriminate power interruption and a fault of a switchboard by a central controller depending on the presence of registration when the switchboard gives no response to a request from a switchboard controller by registering a power supply interruption notice signal from the switchboard to the central controller. CONSTITUTION:A key is provided to each switchboard SWBD so as to give a notice of power supply-off of the switchboard to the switchboard controller PSC and the central controller CC. This notice is received by the switchboard controller PSC as a response to a response request signal KRQ from the switchboard controller PSC and informed to the central controller CC. The central controller CC registers the power supply off notice and when the corresponding switchboard SWBD gives no response to the response request signal KRQ, the switchboard is handled as power supply OFF. On the other hand, when no power supply-off notice is given and the switchboard SWBD gives no response, the switchboard controller PSC informs the switchboard as a faulty board to the central controller CC, which performs fault processing.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to a switching system in which a central controller controls a plurality of switching consoles via a switching console controller, in which the central controller can distinguish between a fault in a switching console and a power-off. This invention relates to a switchboard power-off advance notice system that enables users to perform the following tasks.

Prior Art and Problems FIG. 1 shows a schematic configuration of a switching system in which a central controller controls a plurality of switchboards via a switchboard controller. Audio signals from the plurality of switchboards 5W13D are sent to the network NW via the switchboard controller psc, and audio signals from the network NF are distributed to each switchboard FJ'BD. In addition, the switchboard side controller psc performs an operation to distribute the switchboard control information from the central control unit CC for the plurality of switchboards 5WBD to each switchboard 5WBD, and
It performs the function of transmitting the 1'9 information of each switchboard 5WBD to the central control unit CC.

In this case, the switchboard controller psc sends a response request signal independently to each switchboard SIi'ED as a means for receiving information from each switchboard 5WBD, and sends a response request signal to each switchboard 5WBD.
adopts a system in which some kind of response is sent to the switchboard controller psc even if there is no need to send information to the central controller CC.

FIG. 2 shows a conventional switchboard failure detection method in such a switching system. In other words, the switchboard controller [
The PSC periodically sends a response request signal KRQ to each switch i. In response to this, when the switching board 5WBjji has a 1''H message to be returned, it sends it out, and when there is no information, it returns a "no information" signal. Switchboard! J'B
If Dt is faulty or powered off, response request signal KRQ
However, if there is no response, the switchboard controller 'psc assumes that a failure has occurred and notifies the central controller cc to that effect. Processing to notify the user of the occurrence of a failure is performed.

In this way, the switchboard control device processes all cases where the switchboard does not respond as a failure. However, there are cases where the switchboard is not at fault and a maintenance person turns off the power to the switchboard for some reason, but even in such cases, the switchboard does not respond to the response request signal, so the central controller There was a problem in that it was treated as a failure.

OBJECT OF THE INVENTION The present invention attempts to solve the problems of the prior art, and its purpose is to provide a system in which a central controller detects failures in a plurality of switchboards via a switchboard controller. , when a switchboard does not respond to a response request signal from a switchboard controller, it is possible for the central controller to identify whether the switchboard is at fault or in a power-off state. The goal is to provide a method that can be used.

EMBODIMENT OF THE INVENTION FIG. 3 is a diagram illustrating a switchboard'--source disconnection advance notice system of the present invention. In the system of the present invention, each switchboard 5FBD is provided with a key to notify the switchboard controller psc and central controller CC of power off at the switchboard. This notice is received by the switchboard controller psc as a response to the response request signal KRQ from the switchboard controller psc, in the same way as normal key information in the switchboard controller 5WBD.
The central controller CC is notified. The central control unit CC registers the fact that this power-off notice has been given, and the next time the corresponding switchboard 5WBD does not respond to the response request signal KRQ, it treats that switchboard as being powered off. , not treated as a disability. On the other hand, if the switchboard 5WED does not respond in a state where a power-off notice is not given, the switchboard controller psc notifies the central controller CC that the switchboard is a failure.
handles the failure.

4 and 5 show an embodiment of the switching board power cut-off notification system of the present invention, and FIG. 4 is a system configuration diagram related to switching board control, in which the same parts as in FIG. They are indicated by the same symbols, DT is a digital terminal, C5E is a common line signal device, C3EI is a C5E interface circuit, CHC is a channel controller, and PST
is the position trunk, and SUB is the subscriber. Further, FIG. 5 explains information transmission when a power-off notice is given in the system of FIG. 4.

In FIG. 4, the solid line indicates the flow of the audio signal, and the audio signal from the position trunk PET is transmitted to the network NW.
After the exchange operation is performed at the digital terminal DT and the switchboard controller psc, each switchboard
The voice signals from each switchboard 5WBD are sent to the position trunk psr in reverse order. Also, the dotted line indicates the flow of control signals, and the control information from the switchboard 5WBD is transmitted from the network NTi7 to the C5E interface.
The signal is sent to the central control unit CC via the bus circuit C3EI, the common line signal device C5E, and the channel controller CHCf.

In FIGS. 4 and 5, the cash exchange control device psc individually and periodically transmits a response request signal KRQ to all controllable exchange boards 5WBD, and a certain exchange
When a response request signal KRQ is sent to a WBD, it waits for a response from that switch 5WBD, and when there is a response, it performs the appropriate processing and sends the next switch 5WB.
Control for transmitting a response request signal KRQ to D is performed sequentially on each switching board 5WBD. In this case, inside the switchboard controller psc, a process is performed to edit the response signal from each switchboard 5WBD and send it to the central controller CC. If there is no transmission, no transmission is performed.

Each switchboard 5WBD is equipped with various operation keys, a display consisting of a plasma display, and a display lamp, and when giving a notice of power off, turn on both the control key CTRL and stop keys to N at the same time. The central control unit Hcc sends the power cutoff notice signal CTRL via the switchboard control unit PSC.
When +H is received, it is registered and a signal notifying the reception is sent to the switching board 5WBD.

The switchboard 5WBD analyzes this signal and displays "POFOK" on the display indicating that the power may be turned off.

In this state, the switching board 5WBD outputs the disconnection notice signal CRTL again.
When the +H key is turned on, the central control unit CC, upon receiving this, cancels the power-off advance notice registration and sends a signal notifying reception to the switchboard 5WBD. The switchboard 5WBD analyzes this signal and indicates on the display that the power off notice has been cancelled.r POF C
CL! Display I. When the switchboard 5WBD further keys on the disconnection notice signal CRTL +H, the power off notice is issued again, and [POF] is displayed on the display.
OKJ is displayed.

When any of the switchboards 5WBD becomes unresponsive, the switchboard controller psc sends the switchboard 5 to the central controller CC, regardless of whether a power-off notice has been given or not.
Notify WBD failure. In the central control unit CC, if advance notice of power off has been registered for the switchboard 5WBD to which the failure notification has been made, processing is performed on the assumption that the power has been turned off in the switchboard 5WBD.

Even after the switchboard 5WBD becomes unresponsive, the switchboard controller psc periodically sends a response request signal KRQ to the switchboard 5W.
Continue sending to BD. When there is any response from the switchboard 5WED, the switchboard controller psc notifies the central controller CC of this as fault recovery. For the switchboard 5WED, if the central control unit CC has received a notice that the power will be turned off, it will treat this as a result of the power being turned on, and if it has not received a notice that the power will be turned off, it will treat this as failure recovery.O Detailed explanation of the invention This invention's switchboard power disconnects hand.

According to the previous method, when a signal indicating that the switchboard power source is turned off is sent, the central control unit registers which switch, and when the switchboard does not respond to a response request signal from the switchboard control unit, the central The control unit is designed to identify whether the switch in question is in a power-off state or has a failure, depending on whether a power-off notice is registered or not, so that when a switch does not respond, the central control unit determines whether the switch is in a power-off state or not. If it is based on a disconnection, it is possible to prevent it from being treated as a failure.

[Brief explanation of drawings]

Fig. 1 is a diagram showing a schematic configuration of a switching system in which a central controller controls multiple switchboards via a switchboard control device, and Fig. 2 is a diagram showing a conventional switchboard failure in the switching system shown in Fig. 1. FIG. 3 is a diagram illustrating the detection method, FIG. 3 is a diagram explaining the switchboard power cut-off notice system of the present invention, FIGS. 4 and 5 show an example of the switchboard power-off notice system of the present invention, 4
The figure is a system configuration diagram related to switchboard control.
1' when giving advance notice of power off in the system shown in the figure
It is a figure which shows H report transmission. 5WBD...Switchboard, PSC...Switchboard control device,
NW...Network, CC...Central control unit, D
T...Digital terminal, C5E...Common line signal device, csEI...C5E interface circuit, c
Hc...Channel controller, PST...Position trunk, sUB...Subscriber Patent applicant Fujitsu Limited Representative Patent Attorney Tama Mushi Department (1 person) Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] A plurality of switchboards and the central control device also exchange information via the exchange control device, and when the switchboard does not respond to a response request signal from the switchboard control device, the central control device In a system that notifies a control device of a fault in the relevant switchboard, when the switchboard sends a signal forewarning power cutoff, this is registered in the central control device, and in response to a response request signal from the switchboard control device. A switchboard power-off notice system characterized in that when a switchboard does not respond, a central control unit identifies the switchboard vit source disconnection and a failure depending on whether or not the power-off notice registration has been made.