KR20080060132A - Control system for switching a automatic circuit and method thereof - Google Patents

Abstract

A system and a method for controlling automatic line switching are provided to accommodate every feeding telephone line, connected to each local feeding part, without disconnecting the whole communication network by automatically selecting a normal one between the main device and auxiliary device of a feeding telephone call control part when either works abnormally and automatically switching all feeding telephone lines to the selected device. A system for controlling automatic line switching comprises a feeding telephone call control part(200), an automatic line switching unit(300), and a communication terminal(400). The feeding telephone call control part, which comprises a plurality of feeding telephone lines, records the phone numbers of both ends connected through one of the feeding telephone lines, and checks a call connection state between the two ends in real time. The automatic line switching unit monitors the abnormal state or device breakdown state of the feeding telephone call control part in real time, and automatically switches the feeding telephone lines connected to the feeding telephone call control part. The communication terminal is connected with the automatic line switching unit. In case a wrong operation or a device breakdown is generated from the feeding telephone call control part, the communication terminal stores fault details for the wrong operation or the device breakdown and the date and time of automatic line switching for the feeding telephone lines, creates an MMS/SMS message containing the stored information or an E-mail, and transmits it to the external.

Description

Control System for Switching a Automatic Circuit and Method

1 is a view schematically showing a general EMS feed telephone system.

2 is a view schematically showing a conventional circuit switching apparatus.

3 is a diagram illustrating an automatic circuit changeover control system according to an exemplary embodiment of the present invention.

4 is a flowchart illustrating a method for controlling automatic line changeover according to an exemplary embodiment of the present invention.

5 is a diagram illustrating an automatic line switching device of an automatic line switching control system according to an exemplary embodiment of the present invention.

6 is a flowchart illustrating an automatic line switching method according to an embodiment of the present invention.

The present invention relates to an automatic line switching control system and a method thereof, and more particularly, a main device and an auxiliary device in a feed phone system for connecting a feed phone between two ends in real time using a feed phone call control unit having a main device and an auxiliary device. If one of them causes a malfunction or equipment failure, it automatically selects one of the main and auxiliary devices that operate normally, and automatically switches all of the feeder phone lines connected to each of the regional feeders to one of the selected normal operation. It relates to a transfer control system and a method thereof.

In general, the feeder telephone system is a communication system that connects the regional command zones of power plants or substations of each region with the central command zones of feeder stations that control and manage the feeder stations of each region, and the feeder telephone system is illustrated in FIG. As described above, it includes a handling table 1, a main device 2, and a line switching device 3.

The handle 1 serves to randomly call or respond to the feeder depots C1 to CN of a plurality of regions, and the main device 2 is connected to the line switching device 3 to generate and transmit a call. The call is received and delivered to the handle 1.

The line switching device 3 determines whether there is a failure when transmitting or receiving, and automatically switches the line when a failure occurs, thereby preventing the communication from being cut off when a failure occurs.

The conventional circuit switching device 3 is composed of a circuit switching unit 31 and a manual circuit switching unit 32, as shown in Figure 2, when a system failure occurs by the operator after confirming the alarm sound or visual Manual transfer from the manual line transfer part 32 to the normal equipment.

The conventional circuit switching device 3 as described above has a problem that the system is forced to stop until the worker recognizes a failure by manually switching the worker when a failure occurs. In particular, the central command zone has a regional command in each region. When the phone is dispatched to the stand, if the system is stopped, even though it is an emergency, it is not possible to make a call and there is a problem that the emergency is not received.

In addition, the conventional circuit switching device 3 is vulnerable to system failure management and line management by using a method of manually switching by an alarm sound or visual confirmation when a system failure occurs. Because it can only be checked in the application management program connected to the power supply management operator when a system abnormality occurs when going out for a while, there is a problem that can not determine whether the system abnormality.

The present invention has been made to solve the problems of the prior art, the object of the present invention is to provide a main device on a feed phone system for connecting in real time the feed phone between both ends using a feed phone call control unit having a main device, an auxiliary device If one of the auxiliary devices causes a malfunction or equipment failure, it automatically selects one of the main and auxiliary devices that are operating normally, and automatically switches all of the feeder lines connected to each of the multiple local feeders into one of the normally selected ones. By implementing the automatic line transfer control system and its method, it maximizes the emergency call or broadcasting service processing environment by accommodating all feeder telephone lines without disconnection of the whole communication network, and expects to improve the speed and efficiency of work processing accordingly. To increase.

The present invention for achieving the above object includes the following embodiments. That is, the automatic line switching control system according to the embodiment of the present invention includes a plurality of feeder telephone lines, record a telephone number between both ends connected through a plurality of feeder telephone lines, and record the call state between the two ends in real time. A feeder call control unit for checking by; An automatic line switching device for monitoring in real time whether there is a malfunction of the feeder call control unit or equipment failure state, and automatically switching a plurality of feeder phone lines connected to the feeder call control unit; And connected to the automatic line switching device, if the malfunction of the feeder call control unit or equipment failure occurs, the failure history for the malfunction of the feeder call control unit or equipment failure and the automatic switching of the plurality of feeder phone lines And a communication terminal for generating an MMS / SMS message or an e-mail that announces the fault history, the automatic line-switching date, and the automatic line-switching time after storing the automatic line-switching date and the automatic line-switching time. do.

In an automatic line switching control method according to another embodiment of the present invention, a feeder telephone call control unit includes a plurality of feeder telephone lines, record a telephone number between both ends connected via a plurality of feeder telephone lines, and between the two ends. Checking the call status in real time; Monitoring, by the automatic line switching device, whether a malfunction of the feeder call control unit or a malfunction of the equipment is performed in real time, and automatically switching a plurality of feeder phone lines connected to the feeder call control unit; A communication terminal is connected to the automatic line switching device, and when a malfunction or equipment failure of the feeder call control unit occurs, a failure history of the malfunction of the feeder call control unit or equipment failure and automatic transmission of the plurality of feeder lines Storing an automatic circuit switching date and an automatic circuit switching time according to the switching operation; And generating, by the communication terminal, an MMS / SMS message or an e-mail that announces the error history, the automatic line transfer date, and the automatic line transfer time, and sends it to the outside.

An automatic line switching device of an automatic line switching control system according to another embodiment of the present invention measures an input / output impedance according to real time monitoring of a plurality of feeder telephone lines provided in a feeder telephone call control unit or the plurality of feeder telephones. By comparing the standard resistance value with the resistance to the line loop of the line, it is determined whether there is an abnormality of the plurality of feeder telephone lines, and when the current operation state of the feeder telephone call controller is found to be malfunction or equipment failure, A line monitoring unit for detecting an error result of the power supply line; Upon receiving the detection signal sent from the line monitoring unit, a breakdown history of malfunction or equipment failure of the feeder call control unit and automatic line transfer date and automatic line transfer time according to the automatic transfer of the plurality of feeder phone lines. A management control processing unit for generating a; And, upon receiving the detection signal transmitted from the line monitoring unit, automatically switch the feed telephone line networks formed in the plurality of feed telephone lines provided in the main apparatus of the feed telephone call control unit, and then change the automatically switched feed line telephone network. And a fault signal processing unit for successively inheriting the feed phone line provided in the auxiliary device of the feed phone call controller.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is a diagram illustrating an automatic circuit changeover control system according to an exemplary embodiment of the present invention.

Referring to FIG. 3, the automatic line switching control system 1000 includes a feed telephone call control unit 200, an automatic line switching device 300, and a communication terminal 400, and includes a main device 201 and an auxiliary device 202. The main device 201 when any one of the main device 201 and the subsidiary device 202 causes malfunction or equipment failure in the feed phone system for connecting the feed phone between the two ends in real time using the feed phone call control unit 200 having ), And automatically selects one of the auxiliary devices 202 that operates normally, and automatically switches all of the feeder telephone lines connected to each of the plurality of local power supply units 500 to any one of the selected normal operating devices.

First, the feeder phone call control unit 200 has a main device 201 and an auxiliary device 202 therein, a plurality of feeder phone lines connected to the main device 201 and a plurality of feeder phone lines connected to the auxiliary device 202. It consists of. The feed telephone call control unit 200 records the telephone numbers between both ends of the call connection through a plurality of feed telephone lines, and checks the call state between the two ends in real time.

That is, the feeder call control unit 200 controls the call connection between the two ends, call waiting and call lock state in real time, and continuously monitors the state of the telephone network used for emergency calls between both ends. . If the feed telephone call control unit 200 detects an abnormality of the telephone network, it generates notification information indicating whether the telephone network is abnormal and transmits it to either end.

Of course, the feeder call control unit 200 is a prerequisite that the phone number between both ends can be delivered to any one of the both ends of the notification information indicating whether the telephone network is abnormal.

Here, both ends refer to the handle 100 and the regional feeder 500 to be described below in accordance with an embodiment of the present invention.

In more detail, the feeder call control unit 200 includes a main unit 201 and an auxiliary unit 202. The main apparatus 201 has a plurality of feeder telephone lines and controls emergency call state between both ends connected through a feeder telephone network designed from a plurality of feeder telephone lines.

In addition, the main device 201 pre-stores the telephone number between the two ends, and receives the emergency call request signal and the emergency call call response signal, which are essential for the emergency telephone call connection between both ends, from both ends.

In addition, the main device 201 generates notification information indicating whether there is a problem with a predetermined telephone network by checking whether there is an abnormality in the telephone network used when connecting an emergency call, and then sends the notification information to any one selected from both telephone numbers. To pass.

Subsequently, the auxiliary device 202 of the feeder call control unit 200 is a device capable of performing all the control functions of the main device described above. When the main device 201 is malfunctioning or equipment failure, the main device 201 Instead, it acts as a preliminary control device that handles emergency call calls between both ends and records phone numbers between both ends.

The auxiliary device 202, like the main device 201, is provided with a plurality of feeder telephone lines, and when a malfunction or equipment failure of the main device 201 occurs, the auxiliary device 202 is in the operation standby mode and is converted into the operation active mode. To substitute for all control functions of the main apparatus 201.

That is, the auxiliary device 202 is converted into a form of replacing the pre-formed power supply telephone line network from the plurality of power supply telephone lines connected to the main apparatus 201 through an automatic switching process. In other words, the auxiliary device 202 substitutes for emergency telephone call control and recording of the telephone number of the main device 201 and inherits the feeder telephone line network of the main device 201 as it is.

Hereinafter, the main device / auxiliary device 201/202 of the feeder call control unit 200 according to the embodiment of the present invention includes a local feeder card, a handling card, and a common control unit as a detailed component. do.

The area feeder card stores the phone number of the area feeder 500 and the phone number of the handle 100, and the emergency call is made through the first display device which is expensive when the emergency call is connected to the handle 100. Indicates the call connection status.

The handle card stores the phone number of the handle 100 and the phone number of the local feeder 500, the handle 100 converts the phone number of the local feeder 500 into a shortcut number, priority The emergency call with the local feeder 500 is clicked on by clicking the stored shortcut number.

That is, the handle card displays the emergency call call connection state through the second display device when the handle 100 makes an emergency call with the local power feeding unit 500.

The common control unit controls the signal processing and operation of the local feeder card and the handle card, and checks the emergency call status in real time.

Subsequently, the automatic line switching device 300 monitors in real time whether the feeder phone call control unit 200 is malfunctioning or equipment failure state, and automatically switches a plurality of feeder phone lines connected to the feeder phone call control unit 200.

That is, the automatic line switching device 300 determines that the main apparatus 201 of the feed telephone call control unit 200 is in a malfunction or failure state, and thus the feed telephone line network pre-formed from a plurality of feed telephone lines connected to the main apparatus 201 is determined. After the automatic switching, the automatic switched telephone line network is inherited to the feeder telephone line provided in the auxiliary device 202 of the feeder call control unit 200 as it is.

That is, the automatic line switching device 300 automatically switches over to the auxiliary device 202 even if all the control functions of the main device 201 and the feeder telephone line network formed from the power supply phone line are switched to the auxiliary device 202. Device.

* In addition, the communication terminal 400 is connected to the automatic line switching device 300, when a malfunction or equipment failure of the feed phone call control unit 200, the malfunction or equipment failure of the feed phone call control unit 200 MMS / SMS message notifying the fault history, automatic line-switching date and automatic line-switching time after storing the automatic line-switching date and automatic line-switching time according to the fault history and automatic transfer of multiple feeder lines. Create an email and send it out.

In addition, the automatic line change control system 1000 further includes a handle 100, a local feeder 500, a recording device 700, an image server 600, and an NMS simulator 800.

That is, the handle 100 is one of both ends as described above, and transmits the telephone number already held by the wired / wireless communication line connected to the feeder telephone call controller 200 to the feeder telephone call controller 200. Generates a call connection request signal for requesting a call connection with the local power supply unit 500.

Similarly, the regional feeder 500 is another one of the ends, and the feeder call control unit 200 receives the call connection request signal from the handle 100 and permits the call connection request from the handle 100. .

Accordingly, the local power supply unit 500 receives a call connection request signal transmitted from the power supply telephone call control unit 200 and transmits a call connection response signal corresponding thereto to the power supply telephone call control unit 200, thereby providing a predetermined telephone network. Emergency call with the handle (100) through.

The recording device 700 is connected to the feed phone call control unit 200 through a predetermined Internet network, and the voice call history, voice call time, and the like, by making an emergency call between the handling unit 100 and the local feed unit 500. Record and store only the telephone number of the handling table and the telephone number of the local feeder.

The image server 600 is connected to the handling unit 100 and the local feeding unit 500 through an internet network, and includes a first camera provided at the handling unit 100 and a second camera provided at the local feeding unit 500. Records and stores the video call history, video call time, the phone number of the handling unit 100 only and the phone number of the local feeder 500 as the video call between them is carried out.

The NMS simulator 800 is connected to the feed telephone call control unit 200 and the automatic line switching device 300 through the Internet network, and a plurality of feed telephone lines of the main apparatus 201 are connected when a malfunction of the main apparatus 201 or an equipment failure occurs. After automatically switching to the auxiliary device 202 by the automatic line switching device 300, after receiving the failure history, the line transfer date and the line transfer time automatically generated from the automatic line switching device 300, the handle 100 To pass on.

4 is a flowchart illustrating a method for controlling automatic line changeover according to an exemplary embodiment of the present invention.

Referring to Figure 4, using a feeder call control unit having a main device, an auxiliary device in the feeder telephone system that connects the feeder between the two ends in real time, if any one of the main device, the auxiliary device causes a malfunction or equipment failure, The present invention relates to an automatic line switching control method for automatically selecting any one of the auxiliary devices and automatically switching all of the feeder telephone lines connected to each of the plurality of local power supply units to one of the normal operation.

First, the feeder telephone call control unit includes a plurality of feeder telephone lines, records the telephone numbers of both ends of the call connection through the plurality of feeder telephone lines, and checks the call connection state between the two ends in real time.

The automatic line switching device monitors in real time whether there is a malfunction or failure of the feeder call controller, and automatically switches a plurality of feeder lines connected to the feeder call controller (S2).

The communication terminal is connected to the automatic line switching device, and in case of malfunction of the feeder call control unit or equipment failure, the failure of the feeder call control unit or equipment failure and the automatic switching of multiple feeder lines The automatic line change date and the automatic line change time are stored (S3).

In addition, the communication terminal generates an MMS / SMS message or an e-mail that announces the fault history, the automatic line transfer date, and the automatic line transfer time, and sends them out (S4).

More specifically, the claim provided in the feed telephone call controller includes a plurality of feed telephone lines, records the telephone number between both ends connected through the feed telephone line network designed from the plurality of feed telephone lines, and records the call status between both ends. Check in real time (S1).

Here, both ends refer to handles and regional feeders to be mentioned below in accordance with embodiments of the present invention.

As a supplementary description of (S1), the auxiliary device provided in the feeder telephone call control unit has a plurality of feeder telephone lines, and when a malfunction of the main apparatus or an equipment failure occurs, the operation unit switches from the operation standby mode to the operation active mode state. As a result, the emergency telephone call control of the main apparatus and the recording of the telephone number are acted on, and the feeder telephone network of the main apparatus is inherited as it is.

That is, the operation for (S1) is performed in any one selected from the main device or the auxiliary device provided in the feeder telephone call control unit, so that the desired operation is performed as it is, regardless of whether performed in the main device or the auxiliary device.

Although not shown in FIG. 4, the operation is performed in the detailed components of the main device / auxiliary device, and the area feeder card provided in the main device / auxiliary device stores the phone number of the area feeder and the phone number of the handle. When the emergency call is connected, the emergency call connection state is displayed on the first display device equipped with the apparatus.

The handle card provided in the main / auxiliary device stores the telephone number of the handle and the telephone number of the local feeder.

By storing and saving the speed dial number generated by converting the telephone number of the regional feeder by priority, and making an emergency call with the regional feeder by clicking on the selection, the handling card is transferred through the second display device which is costly. Displays the emergency call call connection status.

In addition, the common control unit provided in the main device / auxiliary device controls the signal processing between the local feeder card and the handling card, and checks the emergency call call connection state in real time.

Although not shown in FIG. 4, as an additional operation required to implement the automatic line switching control method, first, the handling station transmits a pre-owned telephone number to the feed telephone call controller by using a wired / wireless communication line connected to the feed telephone call controller. Generates a call connection request signal for requesting a call connection with the local feeder.

As the feeder call control unit receives the call connection request signal of the handling unit and then accepts the call connection request of the handling unit, the local feeder receives the call connection request signal transmitted from the feeder call control unit and responds to the call connection response signal. By transmitting to the feeder call control unit, the emergency call with the handling station over the predetermined telephone network.

In addition, the recording device is connected to the feeder call control unit through a predetermined Internet network, the voice call history, the voice call time, the telephone number of the handling station and the local feeder only as an emergency call is made between the handling station and the local feeder. Record and save your phone number.

The video server is connected to the handling station and the local feeder through the internet network, and the video call history, the video call time, and the video call between the first camera and the second camera provided at the local feeding unit are provided. Record and store only the telephone number of the handling table and the telephone number of the local feeder.

The NMS simulator is connected to the feeder call control unit and the automatic line switching device through the Internet network, and in case of malfunction or failure of the main device, a plurality of feeder phone lines of the main device are automatically switched to the auxiliary device by the automatic line switching device. After receiving the error, line transfer date, and line transfer time automatically generated from the transfer device, transfer them to the handling station.

5 is a diagram illustrating an automatic line switching device of an automatic line switching control system according to an exemplary embodiment of the present invention.

Referring to FIG. 5, the automatic line switching device 300 of the automatic line switching control system includes a line monitoring unit 301, a management control processing unit 302, and a failure signal processing unit 303.

First, the line monitoring unit 301 extracts the impedances of the input and output terminals of the plurality of feeder telephone lines according to the real time monitoring of the plurality of feeder telephone lines provided to the feeder call control unit, and the impedance of the corresponding input / output terminals. Determine the abnormality of multiple feeder telephone lines by measuring.

In addition, the line monitoring unit 301 detects resistance values for the line loops of the plurality of power supply telephone lines, and then compares them with pre-stored standard resistance values to determine whether there are abnormality of the plurality of power supply telephone lines.

That is, the line monitoring unit 301 determines the abnormality of the plurality of feeder telephone lines by measuring the input / output impedances of the plurality of feeder telephone lines or by comparing the standard resistance values with respect to the line loops of the plurality of feeder telephone lines. .

If the line monitoring unit determines that the current operation state of the feeder telephone call controller is a malfunction or equipment failure, the line monitoring unit generates a predetermined detection signal according to the detection of the error result of the plurality of feeder telephone lines to the management control processing unit 302. Send it out.

Next, as the management control processing unit 302 receives the detection signal transmitted from the line monitoring unit 301, the failure details of the malfunction of the feeder call control unit or the equipment failure and the automatic switching of the plurality of feeder lines are performed. Generate auto-switching date, auto-switching time.

In response to the detection signal transmitted from the line monitoring unit 301, the error signal processing unit 303 automatically switches over the feeder telephone lines pre-formed on the plurality of feeder telephone lines provided in the main apparatus of the feeder telephone call controller, and then automatically Transfer the switched feeder line network to the feeder line provided in the auxiliary device of the feeder call control unit.

6 is a flowchart illustrating an automatic line switching method according to an embodiment of the present invention.

Referring to FIG. 6, in the case of any of the main device and the auxiliary device causing a malfunction or equipment failure in a feed phone system for connecting a feed phone between both ends in real time using a feed phone call control unit having a main device and an auxiliary device, The automatic line switching method automatically selects one of the auxiliary devices that operates normally and automatically transfers all of the feeder telephone lines connected to each of the plurality of local feeders to one of the predetermined normal operations.

The line monitoring unit measures input / output impedance according to real-time monitoring of a plurality of feeder telephone lines provided to the feeder call control unit or compares the standard resistance values with respect to the line loops of the plurality of feeder telephone lines (S1 ', S2'). ).

 The line monitoring unit determines an abnormality of the plurality of feeder telephone lines by measuring the input / output impedance or comparing the standard resistance value with respect to the line loop of the plurality of feeder telephone lines (S3 ').

The line monitoring unit detects an error state of a plurality of feeder phone lines when determining that the current operation state of the feeder call control unit is a malfunction or equipment failure, as it determines that there are a plurality of feeder phone lines (S4 '). .

As the management control processing unit receives the detection signal sent from the line monitoring unit, the automatic line transfer date and the automatic line changeover according to the failure details of the malfunction of the feeder call control unit or the failure of the equipment and the automatic transfer of multiple feeder lines. Generate time (S5 ', S6').

 Upon receiving the detection signal transmitted from the line monitoring unit, the error signal processing unit automatically switches the feeder telephone line networks formed in the plurality of feeder telephone lines provided in the main device of the feeder telephone call controller (S7 ', S8').

Subsequently, the fault signal processing unit inherits the automatically switched feeder telephone line network to the feeder telephone line provided in the auxiliary device of the feeder telephone call control unit (S9 ′).

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and it is common in the art that various substitutions, modifications, and changes can be made without departing from the technical spirit of the present invention. It will be clear to those who have knowledge of God.

According to the configuration of the present invention described above, the present invention in the feeder telephone system for connecting the feeder between the two ends in real time using a feeder call control unit having a host device, the auxiliary device is malfunctioning or equipment In the event of a failure, an automatic circuit switching control system and method for automatically selecting one of the main and auxiliary apparatuses and automatically switching all of the feeder telephone lines connected to each of the plurality of regional feeders to one of the selected normal operating ones. By maximizing the emergency call or broadcasting business processing environment by accommodating all feeder telephone lines without disconnecting the entire communication network, the effect of raising the expectation of the speedy and efficiency improvement of the business processing is thereby increased.

Claims (3)

A feed telephone call control unit having a plurality of feed telephone lines, recording telephone numbers of both ends connected through a plurality of feed telephone lines, and checking a call connection state between the two ends in real time; An automatic line switching device for monitoring in real time whether there is a malfunction of the feeder call control unit or equipment failure state, and automatically switching a plurality of feeder phone lines connected to the feeder call control unit; And It is connected to the automatic line switching device, and if a malfunction or equipment failure of the feeder call control unit occurs, the fault history of the malfunction of the feeder call control unit or equipment failure and automatic switching of the plurality of feeder lines And a communication terminal for generating an MMS / SMS message or an e-mail that announces the fault history, the automatic line-switching date, and the automatic line-switching time after storing the automatic line-switching date and the automatic line-switching time. Automatic line transfer control system. A feeder telephone call control unit having a plurality of feeder telephone lines, recording telephone numbers of both ends of calls connected through the plurality of feeder telephone lines, and checking a call connection state between the two ends in real time; Monitoring, by the automatic line switching device, whether a malfunction of the feeder call control unit or a malfunction of the equipment is performed in real time, and automatically switching a plurality of feeder phone lines connected to the feeder call control unit; A communication terminal is connected to the automatic line switching device, and when a malfunction or equipment failure of the feeder call control unit occurs, a failure history of the malfunction of the feeder call control unit or equipment failure and automatic transmission of the plurality of feeder phone lines Storing an automatic circuit switching date and an automatic circuit switching time according to the switching operation; And And generating, by the communication terminal, an MMS / SMS message or an e-mail which announces the fault history, the automatic line transfer date, and the automatic line transfer time, and sends the message to the outside. By measuring the input and output impedances of real time monitoring a plurality of feeder telephone lines provided to the feeder telephone call control unit or by comparing the standard resistance value with respect to the line loop of the plurality of feeder telephone lines, A line monitoring unit for determining whether there is an abnormality and detecting an error result of the plurality of power supply phone lines when it is determined that the current operation state of the power supply call control unit is a malfunction or equipment failure; Upon receiving the detection signal sent from the line monitoring unit, a breakdown history of malfunction or equipment failure of the feeder call control unit and automatic line transfer date and automatic line transfer time according to the automatic transfer of the plurality of feeder phone lines. A management control processing unit for generating a; And In response to receiving the detection signal transmitted from the line monitoring unit, after automatically switching the feed telephone line network formed in a plurality of feed telephone lines provided in the main device of the feed telephone call control unit, the automatically switched feed telephone line network Automatic circuit switching device of the automatic circuit switching control system comprising a; fault signal processing unit for successively inheriting the feed telephone line provided in the auxiliary device of the feed telephone call control unit.

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