JPS63283344A - Electronic switching system - Google Patents

Abstract

PURPOSE:To quickly recover a service of a slave station by loading in advance to an exclusive temporary storage means in the course of on-line using a fill-in signal of a common channel signaling terminal, and transferring a program to a storage means in normal use for a call processing from said temporary storage means at the time of a fault. CONSTITUTION:An electronic switching element of a slave station 11 is provided with a temporary storage means for storing a program sent out of an electronic switching equipment of a master station 10 separately from a storage means in normal use for storing a call processing program, and also, provided with a means for transferring the program stored in the temporary storage means to the storage means in normal use, when a fault of the own equipment has been generated. That is, in case of bringing the program of the electronic switching equipment of the slave station 11 to initial program loading remotely from the master station 10, to an exclusive temporary storage device 106 of the slave station 11, initial program loading is executed in the course of on-line by using a fill-in signal of a common channel signal, and when the slave station 11 has fallen into a fault, the program is transferred to the temporary storage device 107 for a call processing from the exclusive temporary storage device 106. In such a way, a service of the slave station can be recovered quickly.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electronic switching device (hereinafter referred to as an electronic switching device) using a storage program control method. In particular, the present invention relates to means for remotely loading an initial program when an electronic switching device of a master station (hereinafter referred to as a master station) remotely controls an electronic switching device of a slave station (hereinafter referred to as a slave station).

〔overview〕

The present invention provides means for remotely loading an initial program from an electronic switching device of a master station to an electronic switching device of a slave station, in which the initial program is loaded into a dedicated temporary storage means while online using a fill-in signal of a common line signaling device. This is done in advance, and in the event of a failure, the program is transferred from this temporary storage means to the regular storage means for call processing, thereby making it possible to quickly restore service to the slave station.

[Conventional technology]

Conventionally, when a fault occurs in a slave station, failure information is sent to the master station, and the master station performs an initial program load (hereinafter referred to as IPL) for the slave station, which is a remote control switching device, for the first time at this point. Ta.

FIG. 2 shows the configuration of an embodiment of the conventional system. This method includes a master station 20 and a slave station 21 that is remotely controlled from the master station 20. central control unit 202 of
The slave station 21 includes an external storage device 203 of its own station, a temporary storage device 204 of its own station, and a terminal station interface device 205 of its own station, a temporary storage device 207 of its own station,
It includes a read-only memory 208 of its own station, a central control unit 209 of its own station, and a communication path section 210 of its own station.

Now, when a fault is detected in the slave station 21, the slave station 21 transmits the failure information to the master station 20 through the terminal interface device 205 using hardware logic. When the master station 20 analyzes the content of this failure information and decides to perform IPL, it first executes remote station restart processing. When the remote station restart process is started, the master station 20 controls the remote control communication device 201 to restart the slave station 2.
Establish a communication link with 1. The slave station 21 has been operating in the failure mode since the time the failure information was transferred to the master station 20, and at this time it is running according to a program stored in the read-only memory 208 in advance. When a link establishment request arrives from the master station 20, the slave station 21 establishes a communication link and waits for IPL data from the master station 20.

The master station 20 reads the program for the remote station from the external storage device 203 and transmits the IPL data to the slave station 21 via the temporary storage device 204 . When the slave station 21 receives IPL data via the terminal interface device 205, the central control unit 209 interprets this IPL data and stores it at an appropriate address in the temporary storage device 207. Master station 20
sends a restart processing signal to the slave station 21 to bring the slave station 21 online.

[Problem that the invention seeks to solve]

As described above, in the conventional system, IPL is performed on the slave station only when the device encounters a failure, and the service is interrupted while IPL is performed from the master station.

SUMMARY OF THE INVENTION The present invention aims to eliminate these drawbacks, and aims to provide an electronic switching system that can quickly restore service to a slave station.

(Means for Solving the Problems) The present invention provides an electronic switching device of a master station, and a slave station connected to the electronic switching device through a communication line and into which a control program is initially loaded from the electronic switching device. In an electronic switching system comprising an electronic switching device and a means for inserting a fill-in signal into a blank space of a call processing signal and transmitting it from the electronic switching device of the master station to the electronic switching device of the slave station, the electronic switching device of the master station The switching device is provided with a means for sending out the program instead of sending out a fill-in signal, and the electronic switching device of the slave station stores temporary storage means for storing the program sent out from the electronic switching device of the master station for call processing. The present invention is characterized in that it is provided separately from a regular storage means for storing programs, and further includes means for transferring the program stored in the temporary storage means to the regular storage means when a failure occurs in the own device.

[Effect]

When loading the initial program of a slave station's electronic switching device remotely from the master station, the initial program is loaded into the slave station's dedicated temporary storage device while online using the fill-in signal of the common line signal. When a failure occurs, the program is transferred from the dedicated temporary storage device to the temporary storage device for call processing. This allows the service of the slave station to be quickly restored.

〔Example〕 Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 shows the configuration of an embodiment of the present invention. This embodiment system includes a master station 10 and a slave station 11, and the master station 10 has a communication path section 100 of its own station, a common line signaling device 101 of its own station, a central control device 102 of its own station, Own station's external storage device 1
03 and its own temporary storage device 104, and the slave station 11
is the common line signaling device 105 of the own station, the IPL-dedicated temporary storage device 106 of the own station, the temporary storage device 107, and the IPL
It includes a read-only memory storing a control program, a central control unit 109, and a communication path unit 110 of its own station.

Next, the operation of this embodiment system will be explained based on FIG. Initial state, that is, temporary storage device 107 of slave station 11
The master station 10 executes a procedure for establishing a common line link while no program is loaded on the base station 10 . In the slave station 11, a program previously stored in the read-only memory 108 is running from the moment the power is turned on, and is waiting for the establishment of a link on the common line. Even if the link is established, call processing has not yet started, so no call processing signal is generated. Therefore, a fill-in signal is sent out, and the IPL data of the slave station 11 is transmitted as this fill-in signal. This IPL data as a fill-in signal is received by the common line signaling device 105 of the slave station and reported to the central control device 109. When the central control unit 109 analyzes that this signal is a fill-in signal, it interprets the content and stores it in the IPL-dedicated temporary storage device 106. The master station 10 recognizes that all the IPL data sent out as a fill-in signal has been sent out, and sends a restart instruction to the slave station 11 when the sending is completed. When the slave station 11 receives this signal, it executes a restart process and puts its own station into a service state. Before executing the restart process, the slave station 11 transfers the information from the IPL-dedicated temporary storage device 106 to the temporary storage device 107 for call processing.

When both the master station 10 and the slave station 11 enter the service state, call processing signals are sent and received via the common line signal path, but since there may be no call processing signals, the common line signaling method uses fill-in. A traffic light is provided.

When this fill-in signal is sent out, the program data of the slave station 11 is sent out instead of this fill-in signal. In the slave station 11, when the common line signal device 105 receives this signal, the program is stored in the appropriate address of the IPL-dedicated temporary storage device 106. This operation is repeated between the master station 10 and the slave station 11 while the call processing is normally executed.

Here, if a failure occurs in the slave station 11, it is reported to the master station 10 via a route not shown. The master station 10 determines that all the IPL data has been sent to the slave station 11, and subsequently sends a restart processing request. When the slave station 11 receives this signal, it repeats the above-described operation.

[Effects of the Invention] As explained above, the present invention performs IPL on program data during online service, so the time for IPL can be omitted when restarting a slave station, and the service state can be quickly restored. There is.

Furthermore, since the fill-in signal of the common line signaling method is applied to the PL multiplied signal transmission, there is an effect that the load on the central control devices of both the master station and the slave stations is not heavy.

[Brief explanation of the drawing]

FIG. 1 is a block configuration diagram showing the configuration of an embodiment system. FIG. 2 is a block configuration diagram showing the configuration of a conventional system. 10.20...Master station, 11.21...Slave station, 100
．． 110.200.210...Communication path section, 101.1
05... Common line signaling device, 102.109.202.
209...Central control unit, 103.203...External storage device, 104.107.204.20? ... Temporary storage device, 106 ... IPL-dedicated temporary storage device, 10
8.20B...Read-only memory, 201...Remote control communication device, 205...Terminal station interface device (terminal station INF device). Structure of Example, Figure 1, Figure 2

Claims (1)

[Claims] (1) A master station electronic switching device; A slave station electronic switching device connected to this electronic switching device through a communication line and into which a control program is initially loaded from this electronic switching device; In an electronic switching system comprising means for inserting a fill-in signal into a blank space of a call processing signal and transmitting the fill-in signal from the device to the electronic switching device of the slave station, the electronic switching device of the master station transmits the program to the electronic switching device of the slave station instead of transmitting the fill-in signal. The electronic switching device of the slave station has temporary storage means (for storing the program sent out from the electronic switching device of the master station).
106) is provided separately from the regular storage means (107) for storing call processing programs, and further includes means for transferring the program stored in the temporary storage means to the regular storage means when a failure occurs in the own device. An electronic exchange system characterized by