JP6026816B2 - Monitoring control system and monitoring control method - Google Patents

Description

  The present invention relates to a supervisory control system and the like, and relates to a supervisory control system having a supervisory control terminal for monitoring and controlling a plurality of communication devices and connection states of a plurality of lines connecting the plurality of communication devices.

  In recent years, a system is known in which a network topology of communication apparatuses such as a complex multiplexing apparatus is configured in a ring shape, and the communication apparatus is monitored by a monitoring control terminal.

  In such a system, when some communication devices in the ring are submerged under the influence of a tsunami such as the Great East Japan Earthquake, a line with the submerged communication device as an end point or a submerged Tsushin device There was a case where the line that relays was disconnected.

  In such a case, in order to recover a line that has been disconnected, it is necessary to delete the disconnected line and re-establish a line that bypasses the submerged communication device.

  In addition, the technique relevant to this invention is disclosed by patent document 1 and patent document 2. FIG.

JP-A-4-263540 JP-A-8-23377

  However, in order to delete a line, it is necessary to perform simultaneously on the complex multiplexing apparatus and the relay apparatus located at the end points constituting the line. For this reason, there is a problem that the line cannot be deleted if there is even one complex multiplexing device that has become uncontrollable in the ring. For this reason, the line passing through the communication device that has become uncontrollable remains in the disconnected state and remains in the storage units of the monitoring control terminal and the communication device.

  The present invention has been made in view of such circumstances, and an object of the present invention is to register the line information that has been disconnected due to the monitoring and control apparatus being unable to control the communication apparatus, and the communication terminal and communication. It is an object of the present invention to provide a monitoring control system and a monitoring control method that can be easily deleted from an apparatus.

  The supervisory control system of the present invention is a supervisory control system having a supervisory control terminal that monitors and controls a plurality of communication devices and connection states of a plurality of lines connecting the plurality of communication devices. The apparatus includes a device-side storage unit in which a plurality of line information that is information about the plurality of lines is registered, a device-side message communication unit that communicates messages with the monitoring control terminal, and the device-side storage unit. A device-side line management unit that manages the plurality of registered line information, and the monitoring control terminal operates each of the terminal-side storage unit in which the plurality of line information is registered and each of the plurality of communication devices. An operation state detection unit that detects whether or not the communication state is detected, and a line that needs to be deleted among a plurality of lines that connect the plurality of communication devices based on the detection result of the operation state detection unit As a line A deleted-line identifying unit to be defined, a terminal-side message communication unit that communicates messages between the plurality of communication devices, and a terminal-side line management unit that manages a plurality of line information registered in the terminal-side storage unit The device-side line management unit registers or deletes the line information in the device-side storage unit according to the message transmitted by the terminal-side message communication unit, and the terminal-side line management unit includes the device In accordance with the message transmitted by the side message communication unit, registering or deleting the line information in the terminal side storage unit, when the operation state detection unit detects an operating communication device as an operating communication device, The terminal-side message communication unit sends a line deletion message for deleting the registration of the deletion target line specified by the deletion line specifying unit during the operation. In the communication device in operation, the device-side message communication unit receives the line deletion message, and the device-side line management unit is registered in the device-side storage unit according to the line deletion message. In the plurality of line information, the registration of the deletion target line is deleted, and the device-side message communication unit notifies the deletion of the deletion target line registration by the device-side line management unit. When a deletion completion message is transmitted to the monitoring control terminal, and the terminal side line management unit receives the line deletion completion message from the apparatus side message communication unit, a plurality of line information registered in the terminal side storage unit is received. Among them, the registration of the deletion target line is deleted.

  The supervisory control method of the present invention is a supervisory control method of a supervisory control system having a supervisory control terminal that monitors and controls a connection state of a plurality of lines connecting the plurality of communication devices, and the communication device includes: Registered in the device-side storage unit in which a plurality of line information that is information related to the plurality of lines is registered, a device-side message communication unit that communicates messages with the monitoring control terminal, and the device-side storage unit. A device-side line management unit that manages the plurality of line information, and the monitoring control terminal is configured such that each of the terminal-side storage unit in which the plurality of line information is registered and each of the plurality of communication devices operates. Based on the detection result of the operation state detection unit and the operation state detection unit, a line that needs to be deleted is selected as a deletion target line among the plurality of lines connecting the plurality of communication devices. Identify A line-side identifying unit; a terminal-side message communication unit that communicates messages between the plurality of communication devices; and a terminal-side line management unit that manages a plurality of line information registered in the terminal-side storage unit. The device-side line management unit registers or deletes the line information in the device-side storage unit according to the message transmitted by the terminal-side message communication unit, and the terminal-side line management unit receives the device-side message. Detection step of registering or deleting the line information in the terminal-side storage unit according to the message transmitted by the communication unit, and detecting whether or not each of the plurality of communication devices is operating by the operation state detection unit In the detection step, when the operation state detection unit detects an operating communication device as an operating communication device, the terminal-side message communication unit A deletion message transmission step of transmitting a deletion message for deleting registration of the deletion target line specified by the deletion line specifying unit to the operating communication device; and a device-side message communication unit of the operating communication device, The delete message receiving step for receiving the line delete message, and the device side line management unit of the active communication device, according to the line delete message, among the plurality of line information registered in the device side storage unit, A first device side line registration deletion step of deleting registration of the deletion target line, and the device side message communication unit of the operating communication device has deleted the registration of the deletion target line by the device side line management unit A deletion completion message transmission step of transmitting a deletion completion message for notifying the monitoring control terminal to the monitoring control terminal; and the terminal When the side line management unit receives the deletion completion message from the device side message communication unit, the terminal side line registration that deletes the registration of the deletion target line from the plurality of pieces of line information registered in the terminal side storage unit And a deletion step.

  According to the monitoring control system and the monitoring control method according to the present invention, the monitoring control apparatus can no longer control the communication apparatus, and the registration of the line information that has been disconnected can be easily deleted from the monitoring control apparatus and the communication apparatus. it can.

It is a figure which shows the structure of the monitoring control system in embodiment of this invention. It is a figure which shows schematic structure of the monitoring control system in embodiment of this invention. It is a figure which shows the operation | movement flow of a general monitoring control system. It is a figure which shows the operation | movement flow of the monitoring control system in embodiment of this invention. It is a figure which shows the operation | movement flow of the monitoring control system in embodiment of this invention.

  A monitoring control system 1000 according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram showing a configuration of a monitoring control system 1000 according to the embodiment of the present invention. FIG. 2 is a diagram illustrating a schematic configuration of the monitoring control system 1000.

  First, the schematic configuration of the monitoring control system 1000 will be described with reference to FIG. 2, and then the configuration of the monitoring control system 1000 will be described in detail with reference to FIG.

  As shown in FIG. 2, the monitoring control system 1000 includes a monitoring control apparatus 100, a complex multiplexing apparatus A 200a, a complex multiplexing apparatus B 200b, and a complex multiplexing apparatus C 200c. The complex multiplexer A220a, complex multiplexer B200b, and complex multiplexer C200c correspond to the communication apparatus of the present invention.

  As shown in FIG. 2, the supervisory control system 1000 constructs a network of ring-type network topologies of the complex multiplexing device A 220a, the complex multiplexing device B 200b, and the complex multiplexing device C 200c.

  That is, the complex multiplexer A220a, the complex multiplexer B200b, and the complex multiplexer C200c are connected by the ring-shaped network 400. The network 400 is connected to the monitoring control terminal 100.

  Also, as shown in FIG. 2, composite multiplexing apparatus A 220 a, composite multiplexing apparatus B 200 b, and composite multiplexing apparatus C 200 c are connected to each other by a plurality of lines 510 and 520. Specifically, the complex multiplexer A200a and the complex multiplexer C200c are connected by a line 510 via the complex multiplexer B200b. Also, the complex multiplexer A200a and the complex multiplexer C200c are directly connected by a line 510.

  However, the line 510 exists at the present time, but is a line to be deleted later. The line 520 does not exist at the present time, but is a line that is re-registered after the line 510 is deleted.

  At this time, the complex multiplexing apparatus B 200b functions as a relay apparatus. That is, the complex multiplexer B200b relays the line connection between the complex multiplexer A200a and the complex multiplexer C200c on the line 510 connecting the complex multiplexer A200a and the complex multiplexer C200c.

  In the following description, it is assumed that the complex multiplexing apparatus B 200b cannot be controlled by the monitoring control apparatus 100 (uncontrollable state). For this reason, in FIG. 2, the composite multiplexing apparatus B 200 b is marked with “X”. Further, when the complex multiplexing apparatus B 200b cannot be controlled by the monitoring control apparatus 100, the registration of the line 510 connected to the complex multiplexing apparatus B 200b needs to be deleted from the monitoring control apparatus 100. For this reason, in FIG. 2, the line 510 is indicated by a dotted line.

  Further, as shown in FIG. 2, each of the complex multiplexing apparatus A 220a, the complex multiplexing apparatus B 200b, and the complex multiplexing apparatus C 200c has database 231a to 231c of line registration information. That is, the complex multiplexing apparatus A 200a includes a line registration information database 231a. The complex multiplexing apparatus B 200b has a line registration information database 231b. The complex multiplexing apparatus C200c has a line registration information database 231c. As described above, in the following, it is assumed that the complex multiplexing device B 200b cannot be controlled by the monitoring control device 100. For this reason, in FIG. 2, the line registration information database 231 b is marked with a cross. The line registration information databases 231a to 231c will be described in detail later with reference to FIG.

  As illustrated in FIG. 2, the monitoring control apparatus 100 includes a plurality of line registration information databases 131 to 133. At this time, the line registration information database 131 corresponds to the complex multiplexing apparatus A 200a. The line registration information database 132 corresponds to the complex multiplexing apparatus B 200b. Similarly, the line registration information database 133 corresponds to the complex multiplexing apparatus C200c. The plurality of line registration information databases 131 to 133 will be described in detail later with reference to FIG.

  Further, as shown in FIG. 2, the monitoring control apparatus 100 and each of the complex multiplexing apparatuses 200a to 200b exchange messages. The details of the message exchange process will be described later in detail with reference to FIG.

  Returning to FIG. 1, the configuration of the monitoring control system 1000 will be described in detail.

  The supervisory control system 1000 includes a supervisory control terminal 100, a complex multiplexer A200a, a complex multiplexer B200b, and a complex multiplexer C200c. In addition, the monitoring control terminal 100, the complex multiplexing device A 200a, the complex multiplexing device B 200b, and the complex multiplexing device C 200c are connected by a network 400.

  In the following description, when it is not necessary to distinguish between the complex multiplexing apparatus A 200a, the complex multiplexing apparatus B 200b, and the complex multiplexing apparatus C 200c, these are collectively referred to as the complex multiplexing apparatus 200. Further, even when it is necessary to distinguish between the complex multiplexing apparatus A 200a, the complex multiplexing apparatus B 200b, and the complex multiplexing apparatus C 200c, when specifying a plurality of complex multiplexing apparatuses 200, for example, the complex type In some cases, the multiplexers 200a and 200c, the complex multiplexers 200b and 200c, and the like are also shown.

  First, the configuration of the monitoring control terminal 100 will be described in detail.

  As shown in FIG. 1, the monitoring control terminal 100 includes a terminal side communication unit 110, a terminal side control unit 120, and a terminal side storage unit 130.

  The terminal-side communication unit 120 communicates with a plurality of composite multiplexing devices 200 via the network 400. The terminal-side communication unit 120 includes a terminal-side connection request signal communication unit 111 and a terminal-side message communication unit 112.

  The terminal-side connection request signal communication unit 111 transmits a control connection request signal to the plurality of composite multiplexing devices 200 via the network 400. This control connection request signal is a signal for detecting whether or not each of the plurality of composite multiplexers 200 is operating.

  The terminal-side message communication unit 112 communicates (transmits / receives) a message with the multiple complex multiplexing devices 200 via the network 400. The message includes, for example, information related to registration or deletion of line information stored in the storage unit 230 of the composite multiplexing device 200 described later.

  The terminal side control unit 120 controls the entire monitoring control terminal 100. The terminal side control unit 120 includes a terminal side line management unit 121 and an operation state detection unit 122.

  The terminal-side line management unit 121 registers or deletes line information in a terminal-side storage unit 130, which will be described later, in accordance with a message transmitted by a device-side message communication unit 212, which will be described later.

  The operation state detection unit 122 detects whether each of the plurality of composite multiplexing devices 200 is operating. At this time, the terminal-side line management unit 121 detects the complex multiplexer 200 that is not operating as a stopped communication device (suspended complex multiplexer). Conversely, the terminal-side line management unit 121 detects the operating complex multiplexer 200 as an active communication device (active complex multiplexer).

  At this time, the operation state detection unit 122 detects a composite multiplexing device that has responded by a device-side control connection request communication unit 211 of the composite multiplexing device 200 described later as an active communication device. On the contrary, the operation state detection unit 122 detects a composite multiplexing device that has not responded as a communication device being stopped by a device-side control connection request communication unit 211 of the composite multiplexing device 200 described later.

  Based on the detection result of the operation state detection unit 122, the deletion line specifying unit 123 specifies a line that needs to be deleted as a deletion target line among a plurality of lines that connect the plurality of composite multiplexing apparatuses 200. .

  The terminal-side storage unit 130 stores various types of information related to the monitoring control terminal 100 and the composite multiplexer 200. The terminal-side storage unit 130 includes a line registration information database 131 for the complex multiplexing apparatus A, a line registration information database 132 for the complex multiplexing apparatus B, a line registration information database 133 for the complex multiplexing apparatus, have.

  The line registration information database 131 of the complex multiplexing apparatus A is a database for the terminal side line control unit 120 to manage the line information registered in the complex multiplexing apparatus A 200a. Similarly, the line registration information database 132 of the complex multiplexing apparatus B is a database for the terminal side line control unit 120 to manage line information registered in the complex multiplexing apparatus B 200b. Similarly, the line registration information database 133 of the composite multiplexer C is a database for the terminal side line control unit 120 to manage the line information registered in the composite multiplexer C 200c.

  The configuration of the monitoring control terminal 100 has been described above.

  Next, the configuration of the composite multiplexing apparatus 200 will be described in detail.

  The composite multiplexing device 200 includes a device-side communication unit 210, a device-side control unit 220, and a device-side storage unit 230.

  The device-side communication unit 210 communicates with the monitoring control terminal 100 via the network 400. The device-side communication unit 210 includes a device-side control connection request signal communication unit 211 and a device-side message communication unit 212.

  The device-side connection request signal communication unit 211 receives a control connection request signal transmitted from the monitoring control terminal 100. Then, the device side connection request signal communication unit 211 transmits a control connection response signal to the monitoring control terminal 100 as a response signal to the control connection request signal.

  The device-side message communication unit 212 communicates (transmits / receives) a message with the monitoring control terminal 100 via the network 400. As described above, the message includes, for example, information related to registration or deletion of the line information stored in the storage unit 230 of the composite multiplexing apparatus 200 described later.

  The device-side control unit 220 controls the entire composite multiplexing device 200. The device side control unit 220 includes a device side line management unit 221.

  The device-side line management unit 221 registers or deletes line information in the device-side storage unit 230 in accordance with the message transmitted by the terminal-side message communication unit 112.

  The device-side line management unit 221 detects whether each of the plurality of composite multiplexing devices 200 is operating. At this time, the terminal-side line management unit 121 detects the complex multiplexer 200 that is not operating as a stopped communication device (suspended complex multiplexer). Conversely, the terminal-side line management unit 121 detects the operating complex multiplexer 200 as an active communication device (active complex multiplexer).

  At this time, the operation state detection unit 122 detects a composite multiplexing device that has responded by a device-side control connection request communication unit 211 of the composite multiplexing device 200 described later as an active communication device. On the contrary, the operation state detection unit 122 detects a composite multiplexing device that has not responded as a communication device being stopped by a device-side control connection request communication unit 211 of the composite multiplexing device 200 described later.

  The device-side storage unit 230 stores various types of information related to the composite multiplexing device 200. The device-side storage unit 230 includes a line registration information database 231 of the complex multiplexing device 200. That is, the device-side storage unit 230 of the composite multiplexer A200a has a line registration information database 231a of the composite multiplexer A200a (see FIG. 2). Similarly, the device-side storage unit 230 of the composite multiplexer B 200b has a line registration information database 231b of the composite multiplexer B 200b (see FIG. 2). Similarly, the device-side storage unit 230 of the composite multiplexer C200c has a line registration information database 231c of the composite multiplexer C200c (see FIG. 2). Note that when there is no need to distinguish the line registration information databases 231a to 231c, these will be comprehensively described as the line registration information database 231.

  The line registration information database 231 of each complex multiplexing apparatus 200 is a database for the apparatus-side control unit 220 to manage line information registered in the complex multiplexing apparatus 200.

  The configuration of the composite multiplexing apparatus 200 has been described above.

  Next, the operation of the monitoring control system 1000 according to the embodiment of the present invention will be described with reference to the drawings. FIG. 3 is an operation flowchart of the general technique of the monitoring control system 1000. 4 and 5 show an operation flow of the monitoring control system 1000. FIG. 3 to 5, the composite multiplexing device 200 is simply omitted as a device.

  First, a general technique as a premise of the operation of the monitoring control system 1000 of the present invention will be described with reference to FIG. The case where this general technique is applied to the monitoring control system 1000 is referred to as a general technique mode.

  As shown in FIG. 3, in the general technical mode, the supervisory control terminal 100 is a complex multiplex that cannot be controlled by the supervisory control terminal 100 among the multiple multiplex apparatuses 200 in the network 400. It is detected whether or not the device 200 exists (S301).

  When there is no complex multiplexing apparatus 200 that has become uncontrollable (S301, NO), the network 400 is in a state in which no failure has occurred. For this reason, since there is no line to be disconnected, the monitoring control system 1000 does not perform any processing.

  On the other hand, a case will be described in which there is at least one composite multiplexing device 200 that has become uncontrollable (YES in S301). In this case, all the lines that pass through the composite multiplexing apparatus 200 that have become uncontrollable are non-connection lines. Since it is desired not to pass through the complex multiplexing apparatus 200 that has become uncontrollable and to bypass this disconnected line, it is necessary to delete the disconnected line once. However, in this case, it is necessary to delete the line simultaneously from all target complex multiplexing apparatuses 200. However, if there is a complex multiplexer 200 that has become uncontrollable, the line of the complex multiplexer 200 cannot be deleted. For this reason, as a result, it was not possible to delete the entire disconnected line including the controllable composite multiplexer 200 (S302). Therefore, a capacity for newly registering a line that bypasses the complex multiplexing apparatus 200 that has become uncontrollable cannot be secured in the device-side storage unit 230, and it is impossible to register a bypass line ( S303).

  Next, the operation of the monitoring control system 1000 of the present invention will be specifically described with reference to FIGS. 4 and 5. Here, as shown in FIG. 2, it is assumed that the complex multiplexing apparatus B 200 b is in a state where it cannot be controlled by the monitoring control terminal 100.

  Note that the operation mode of the monitoring control system 1000 in this case is referred to as an emergency mode with respect to the above-described general technical mode. 4 and 5, the composite multiplexing apparatus 200 is simply omitted as an apparatus.

  As shown in FIG. 4, first, the supervisory control terminal 100 confirms whether or not a control connection can be established with the complex multiplexing apparatus 200 (S101). S101 corresponds to the detection step of the present invention.

  Specifically, the terminal-side connection request signal communication unit 111 transmits a control connection request signal via the network 400 to all the complex multiplexing apparatuses 200a, 200b, and 200c in the network 400.

  On the other hand, in the controllable composite multiplexer A200a and composite multiplexer C200c, the device-side connection request signal communication unit 211 receives a control connection request signal transmitted from the monitoring control terminal 100. Next, the device side connection request signal communication unit 211 transmits a control connection response signal to the monitoring control terminal 100 as a response signal to the control connection request signal. In the monitoring control terminal 100, the terminal side connection request signal communication unit 111 receives the control connection response signal. As a result, the supervisory control terminal 100 can connect a control connection to the complex multiplexing apparatus 200. This control connection is continuously connected between the monitoring control terminal 100 and the composite multiplexing apparatus 200 until the process of S108 described later.

  When the terminal-side control connection request signal communication unit 111 receives the control connection response signal, the operation state detection unit 122 detects the complex multiplexers 200a and 200c that have transmitted the control connection response signal as operating communication devices. . In other words, the operation state detection unit 122 detects the composite multiplexing devices 200a and 200c that have responded by the device-side control connection request communication unit 211 as active communication devices (active composite multiplexing devices).

  On the other hand, in the composite multiplexing device B 200b that has become uncontrollable, the device-side connection request signal communication unit 211 cannot receive the control connection request signal transmitted from the monitoring control terminal 100. For this reason, in the monitoring control terminal 100, the terminal-side connection request signal communication unit 111 cannot receive the control connection response signal. In this case, the operation state detection unit 122 detects the complex multiplexer 200b that has not responded by the device-side control connection request communication unit 211 as a stopped communication device (suspended complex multiplexer).

  In this way, the operation status detection unit 122 of the monitoring control terminal 100 is the complex multiplexing apparatus 200 that cannot be controlled by the monitoring control terminal 100 among the plurality of complex multiplexing apparatuses 200 in the network 400. Whether or not exists is detected.

  Then, based on the detection result of the operation state detection unit 122, the deletion line specifying unit 123 sets a line that needs to be deleted among a plurality of lines connecting the plurality of complex multiplexing apparatuses 200 as a deletion target line. Identify. Specifically, the deleted line specifying unit 123 specifies a line connected to the stopped communication apparatus (stopped complex multiplexing apparatus) as a deletion target line. Here, the line 510 connected to the stopped complex multiplexing apparatus 200b is specified as the deletion target line.

  When the supervisory control terminal 100 is able to connect a control connection to the composite multiplexer 200 (S101, YES), as shown in FIG. 2, the monitor control terminal 100 is connected to the composite multiplexer 200a, A line deletion message is transmitted to 200c (S102). Specifically, the terminal-side message communication unit 112 sends a line deletion message for deleting the registration of the deletion target line 510 specified by the deletion line specifying unit 123 to the complex multiplexing apparatuses 200a, 200c ( To the active communication device). S102 corresponds to the delete message transmission step of the present invention.

  Next, the active complex multiplexing apparatuses 200a and 200c receive the line deletion message (S103). Specifically, in the complex multiplexing apparatuses 200 a and 200 c in operation, the apparatus-side message communication unit 212 receives the line deletion message and outputs it to the apparatus-side control unit 220. S103 corresponds to the delete message receiving step of the present invention.

  Then, each of the operating complex multiplexing apparatuses 200 a and 200 c deletes the registration of the deletion target line from the line registration information database 231 in the apparatus-side storage unit 230 and updates the data in the database 231. (S104). S104 corresponds to the first apparatus-side line registration deletion step of the present invention.

  Specifically, in each of the complex multiplexing apparatuses 200a and 200c in operation, the apparatus-side line management unit 221 performs a plurality of registrations in the line registration database 231 in the apparatus-side storage unit 230 according to the line deletion message. Of the line information, the registration of the deletion target line 510 is deleted, and the data in the database 231 is updated. As a result, the registration of the deletion target line 510 can be deleted from the device-side storage unit 230 in the complex multiplexing devices 200a and 200c in operation.

  Next, the active complex multiplexing apparatuses 200a and 200c transmit a line deletion completion message to the monitoring control terminal 100 (S105). S105 corresponds to the deletion completion message transmission step of the present invention.

  Specifically, in the complex multiplexing apparatuses 200 a and 200 c in operation, the apparatus-side message communication unit 212 transmits a line deletion completion message to the monitoring control terminal 100. At this time, the line deletion completion message is a message for notifying that the registration of the deletion target line has been deleted by the apparatus side line management unit 221 as described above.

  Then, the supervisory control terminal 100 receives the line deletion completion message from the active complex multiplexers 200a and 200c (S106).

  Specifically, in the supervisory control terminal 100, the terminal-side message communication unit 112 receives the line deletion completion message transmitted from the active complex multiplexers 200a and 200c.

  Next, the monitoring control terminal 100 deletes the registration of the deletion target line 510 from the terminal-side storage unit 130 and updates the data in the database 131 and the like in the terminal-side storage unit 130 (S107). S107 corresponds to the terminal side line registration deletion step of the present invention.

  Specifically, in the monitoring control terminal 100, when the terminal-side message communication unit 112 receives a line deletion completion message from the device-side message communication unit 212, the terminal-side line management unit 121 performs the composite type in the terminal-side storage unit 130. The registration of the deletion target line 510 is deleted from the line registration information database 131 of the multiplexing apparatus A and the line registration information database 133 of the composite type multiplexing apparatus C, and the data of the databases 131 and 133 is updated. As a result, from the line registration information database 131 of the complex multiplexing apparatus A and the line registration information database 133 of the complex multiplexing apparatus A in the terminal-side storage unit 130 in the supervisory control terminal 100, the deletion target line 510 Registration can be deleted.

  Therefore, the registration of the deletion target line 510 can be deleted from both the device-side storage unit 230 of the composite multiplexing apparatus 200 and the terminal-side storage unit 130 in the monitoring control terminal 100 by the processes of S104 and S107. it can.

  As a result, since a series of line deletion processing is completed, the monitoring control terminal 100 disconnects the control connection connected to the composite multiplexing apparatus 200 (S108).

  When the supervisory control terminal 100 cannot connect the control connection with the composite multiplexing apparatus 200 (S101, NO), the supervisory control terminal 100 performs processing that assumes that the line deletion message has been transmitted (S101: NO). S109). S109 corresponds to the pseudo transmission step of the present invention.

  Here, the complex multiplexing apparatus B 200b is in a state in which the supervisory control terminal 100 cannot be controlled. For this reason, the supervisory control terminal 100 cannot connect a control connection to the complex multiplexing apparatus B 200b (communication apparatus being stopped). Therefore, the supervisory control terminal 100 cannot transmit various messages to the complex multiplexer B200b that has become uncontrollable.

  Therefore, in the process of S109, the terminal-side message communication unit 112 of the monitoring control terminal 100 sends a line deletion message for deleting the deletion target line 510 to the stopped complex multiplexer B200b (stopped communication apparatus). A pseudo transmission process is performed in which the transmission is considered to be pseudo. As a result, the supervisory control terminal 100 can be regarded as having transmitted the line deletion message to the stopped complex multiplexing apparatus B 200b.

  Next, the supervisory control terminal 100 performs a process that considers that a line deletion completion message has been received from the stopped complex multiplexer B200b (S110). S110 corresponds to the pseudo reception step of the present invention.

  Here, as described above, in S109, the monitoring control terminal 100 does not actually transmit the line deletion message to the stopped complex multiplexing apparatus B 200b.

  However, as described above, the terminal-side line management unit 121 needs to register or delete the line information in the terminal-side storage unit 130 according to the message transmitted by the device-side message communication unit 212.

  Therefore, in the present invention, the terminal-side message communication unit 112 of the monitoring control terminal 100 has received a line deletion completion message for notifying that the deletion target line 510 has been deleted from the stopped complex multiplexing apparatus B 200b. Performs pseudo reception processing that is regarded as pseudo.

  Then, similarly to S107, the monitoring control terminal 100 deletes the registration of the deletion target line 510 from the terminal-side storage unit 130 and updates the data in the database 131 and the like in the terminal-side storage unit 130 (S111). S111 corresponds to the second terminal side line registration deletion step of the present invention.

  Specifically, in the supervisory control terminal 100, the terminal-side line management unit 121 reads the line registration information database 132 of the complex multiplexing apparatus B in the terminal-side storage unit 130 according to the pseudo transmission process and the pseudo reception process. The registration of the deletion target line 510 is deleted, and the data in the database 132 is updated. As a result, the registration of the deletion target line 510 can also be deleted from the line registration information database 132 of the composite multiplexer B in the terminal-side storage unit 130 in the monitoring control terminal 100.

  Since the composite multiplexer B200b is uncontrollable, it is deleted from the line registration information database 230b (see FIG. 2) in the device-side storage unit 230 in the composite multiplexer B200b that has become uncontrollable. Registration of the target line 510 cannot be deleted.

  However, in the technique shown in the background art, if there is even one complex multiplexing apparatus that has become uncontrollable, the registration of the deletion target line cannot be deleted at all.

  On the other hand, in the present invention, since the registration of the deletion target line 510 can be deleted from at least the line registration information database 132 in the terminal storage unit 130 of the monitoring control terminal 100, it is shown in the background art. Compared to the technology, it is possible to secure more free capacity of the terminal storage unit 130 in the monitoring control system 1000.

  Next, after the processing of S108 and S111, the supervisory control terminal 100 detects whether or not the complex multiplexing apparatus 200 that is another line deletion target exists in the network 400 (S112).

  When another type of multiplexing apparatus 200 to be deleted exists in the network 400 (S112, YES), the processing from S101 is repeated.

  On the other hand, when there is no other type of multiplexing device 200 to delete the line in the network 400 (S112, NO), the terminal-side storage unit 130 in the monitoring control terminal 100 and the device side in the compounding multiplexing device 200 Deletion of registration of all disconnected lines (deletion target lines) from the storage unit 130 is completed (S113). As a result, the free capacity increases in the terminal-side storage unit 130 in the monitoring control terminal 100 and the device-side storage unit 130 in the composite multiplexing apparatus 200.

  In response to the processing in S113, the terminal-side storage unit 130 in the supervisory control terminal 100 and the device-side storage unit 130 in the composite multiplexer 200 have increased free capacity, so that the composite multiplexing that has become uncontrollable A line 520 (see FIG. 2) for bypassing the device B 200b can be newly registered (S114).

  The operation of the monitoring control system 100 has been described above.

  As described above, the monitoring control system 1000 according to the embodiment of the present invention has a connection state of a plurality of complex multiplexing devices 200 (communication devices) and a plurality of lines connecting the plurality of complex multiplexing devices 200. A monitoring control terminal 100 for monitoring and controlling The complex multiplexing apparatus 200 includes a device-side storage unit 230, a device-side message communication unit 212, and a device-side line management unit 221. In the device-side storage unit 230, a plurality of pieces of line information that is information related to a plurality of lines is registered. The device-side message communication unit 212 communicates messages with the monitoring control terminal 100. The device side line management unit 221 manages a plurality of pieces of line information registered in the device side storage unit 230. The monitoring control terminal 100 includes a terminal side storage unit 130, an operation state detection unit 122, a deleted line identification unit 123, a terminal side message communication unit 112, and a terminal side line management unit 121. The terminal-side storage unit 130 registers a plurality of line information. The operation state detection unit 122 detects whether each of the plurality of composite multiplexing devices 200 is operating. Based on the detection result of the operation state detection unit 122, the deletion line specifying unit 123 specifies a line that needs to be deleted as a deletion target line among a plurality of lines that connect the plurality of composite multiplexing apparatuses 200. . The terminal-side message communication unit 112 communicates messages with the multiple complex multiplexing devices 200. The terminal side line management unit 121 manages a plurality of pieces of line information registered in the terminal side storage unit 130. Further, the device-side line management unit 221 registers or deletes line information in the device-side storage unit 230 in accordance with the message transmitted by the terminal-side message communication unit 112. The terminal-side line management unit 121 registers or deletes line information in the terminal-side storage unit 130 according to the message transmitted by the device-side message communication unit 212.

  When the operation state detection unit 122 detects the operating complex multiplexer 200 as an operating communication device, each unit operates as follows. That is, the terminal-side message communication unit 112 transmits a line deletion message for deleting the registration of the deletion target line specified by the deletion line specifying unit 123 to the operating communication device. Further, in the communication device in operation (combined multiplexing device 200 in operation), the device-side message communication unit 212 receives the line deletion message. The device-side line management unit 221 deletes the registration of the deletion target line from the plurality of pieces of line information registered in the device-side storage unit 230 in accordance with the line deletion message. The device-side message communication unit 212 transmits a line deletion completion message for notifying that the registration of the deletion target line has been deleted by the device-side line management unit 221 to the monitoring control terminal 100. When receiving the line deletion completion message from the device-side message communication unit 212, the terminal-side line management unit 121 deletes the registration of the deletion target line from among the plurality of pieces of line information registered in the terminal-side storage unit 130.

  As described above, in the monitoring control system 1000 according to the embodiment of the present invention, the operation state detection unit 122 detects whether or not each of the multiple complex multiplexing devices 200 is operating. As a result, the supervisory control device 100 distinguishes and detects a device (operating communication device) that can be controlled by the supervisory control terminal 100 and a device that cannot be controlled (communication device that is stopped) among the plurality of complex multiplexing devices 200. can do.

  Further, the deleted line specifying unit 123 sets, as a deletion target line, a line that needs to be deleted among a plurality of lines that connect the plurality of composite multiplexers 200 based on the detection result of the operation state detecting unit 122. Identify. As a result, the monitoring control apparatus 100 can identify the deletion target line that has fallen into the disconnected state.

  When the operating state detection unit 122 detects the operating complex multiplexing apparatus 200 as an active communication device, the terminal-side message communication unit 112 registers the deletion target line specified by the deletion line specifying unit 123. A line deletion message for deletion is transmitted to the operating communication device.

  In complex multiplexing apparatus 200 (operating communication apparatus) in operation, apparatus-side message communication unit 212 receives a line deletion message. The device-side line management unit 221 deletes the registration of the deletion target line from the plurality of pieces of line information registered in the device-side storage unit 230 in accordance with the line deletion message. Thereby, the registration of the deletion target line 510 can be deleted from the device-side storage unit 230 in the complex multiplexing device 200 in operation. As a result, a large amount of free space in the device-side storage unit 230 can be secured.

  In the complex multiplexing apparatus 200 in operation, the apparatus-side message communication unit 212 sends a line deletion completion message for notifying that the apparatus-side line management unit 221 has deleted the registration of the deletion target line to the monitoring control terminal 100. Send to. Thereby, the supervisory control terminal 100 can recognize that the registration of the deletion target line has been deleted from the apparatus-side storage unit 130 in the complex multiplexing apparatus 200 in operation.

  When receiving the line deletion completion message from the device-side message communication unit 212, the terminal-side line management unit 121 deletes the registration of the deletion target line from among the plurality of pieces of line information registered in the terminal-side storage unit 130. Thereby, more free capacity of the terminal storage unit 130 in the supervisory control terminal 100 can be secured.

  As described above, when the operation state detection unit 122 detects the operating complex multiplexing apparatus 200 as an operating communication apparatus, the monitoring control system 1000 of the present invention uses the terminal side storage unit in the monitoring control terminal. It is possible to easily delete the registration of the deletion target line from both 130 and the apparatus-side storage unit 230 of the complex multiplexing apparatus 200 in operation. As a result, it is possible to secure more free space in both the terminal storage unit 130 in the monitoring control terminal 100 and the device storage unit 230 of the composite multiplexer 230.

  As described above, since the capacity for newly registering a line that bypasses the composite multiplexing apparatus 200 that has become uncontrollable can be secured in both the terminal storage unit 130 and the apparatus storage unit 230, a new detour line is newly established in the terminal. It is possible to register in the free areas of both the storage unit 130 and the device storage unit 230.

  Therefore, according to the monitoring control system 1000 in the embodiment of the present invention, the monitoring control apparatus 100 becomes unable to control the composite multiplexing apparatus 200 (communication apparatus) and monitors and controls registration of line information that has been disconnected. It can be easily deleted from the terminal 100 and the composite multiplexing apparatus 200 (communication apparatus).

  In the monitoring control system 1000 according to the embodiment of the present invention, when the operation state detection unit 122 detects the complex multiplexing apparatus 200 that is not operating as a stopped communication apparatus, the monitoring control system 1000 is as follows. Operate. In other words, the terminal-side message communication unit 112 performs a pseudo-transmission process in which it is assumed that the line deletion message has been transmitted to the stopped communication device (the stopped complex multiplexer 200). Here, the stopped complex multiplexing apparatus 200 is in a state in which the supervisory control terminal 100 cannot be controlled. Therefore, the supervisory control terminal 100 cannot transmit various messages to the stopped complex multiplexer 200 that has become uncontrollable. Therefore, a pseudo transmission process in which the terminal-side message communication unit 112 of the supervisory control terminal 100 regards the line deletion message for deleting the deletion target line as a pseudo transmission to the stopped complex multiplexer 200 is performed. Do. As a result, the monitoring control terminal 100 can operate as if it had transmitted a line deletion message to the stopped complex multiplexing apparatus B 200b.

  In addition, the terminal-side message communication unit 112 performs a pseudo-transmission process, and also performs a pseudo-reception process in which a line deletion completion message is regarded as being pseudo-received from the stopped communication apparatus (the stopped complex multiplexing apparatus 200). Do. Here, as described above, the supervisory control terminal 100 has not transmitted the line deletion message to the stopped complex multiplexing apparatus B 200b. However, the terminal-side line management unit 121 needs to register or delete the line information in the terminal-side storage unit 130 in accordance with the message transmitted by the device-side message communication unit 212. Therefore, in the present invention, the terminal-side message communication unit 112 of the monitoring control terminal 100 has received a line deletion completion message for notifying that the deletion target line 510 has been deleted from the stopped complex multiplexing apparatus B 200b. A pseudo-reception process is performed in which it is regarded as pseudo. As a result, the monitoring control terminal 100 can operate as if it received a line deletion completion message from the stopped complex multiplexer 200.

  In the monitoring control terminal 100, the terminal side line management unit 121 deletes the registration of the deletion target line from the terminal side storage unit 130 according to the pseudo transmission process and the pseudo reception process.

  Thereby, the registration of the deletion target line can be deleted from the terminal side storage unit 130 in the monitoring control terminal 100. As a result, more free capacity of the terminal storage unit 130 in the monitoring control terminal 100 can be secured.

  As described above, when the operation state detection unit 122 detects the complex multiplexing device 200 that is not operating as a stopped communication device, the monitoring control system 1000 of the present invention uses the terminal side storage unit in the monitoring control terminal. From 130, the deletion target line registration can be easily deleted. As a result, more free capacity of the terminal storage unit 130 in the monitoring control terminal 100 can be secured.

  In this way, the terminal storage unit 130 can secure a capacity for newly registering a line that bypasses the complex multiplexing apparatus 200 that has become uncontrollable. You can register.

  Therefore, according to the monitoring control system 1000 in the embodiment of the present invention, the monitoring control apparatus 100 becomes unable to control the composite multiplexing apparatus 200 (communication apparatus), and registration of line information that has been disconnected is registered. It can be easily deleted from the monitoring control terminal 100.

  Since the stopped complex multiplexer 200 is uncontrollable, the registration of the deletion target line cannot be deleted from the device-side storage unit 230 in the complex multiplexer 200 that has become uncontrollable. . However, in the technique shown in the background art, if there is even one complex multiplexing apparatus that has become uncontrollable, the registration of the deletion target line cannot be deleted at all. On the other hand, in the present invention, since the registration of the deletion target line can be deleted at least from the terminal storage unit 130 of the monitoring control terminal 100, the monitoring control system is compared with the technique shown in the background art. More free capacity of the terminal storage unit 130 in 1000 can be secured.

  In the monitoring control system 1000 according to the embodiment of the present invention, the monitoring control terminal 100 further includes a terminal-side control connection request communication unit 111. The terminal-side control connection request communication unit 111 sends a control connection request signal for detecting whether or not each of the plurality of complex multiplexers 200 is operating to the plurality of complex multiplexers 200. Send. The complex multiplexing apparatus 200 includes a device-side control connection request signal communication unit 211. The device-side control connection request signal communication unit 211 responds to the control connection request signal transmitted by the terminal-side control connection request signal communication unit 111. Then, the operation state detection unit 122 detects the composite multiplexing device 200 that has responded by the device-side control connection request communication unit 211 as an active communication device.

  As described above, in the supervisory control system 1000, whether the supervisory control terminal 100 receives the response of the control connection request signal from the hybrid multiplexer 200 or not can be easily stopped. It is possible to identify the composite multiplexing apparatus 200 in the middle.

  The monitoring control method according to the embodiment of the present invention monitors and controls a connection state of a plurality of complex multiplexing apparatuses 200 (communication apparatuses) and a plurality of lines connecting the plurality of complex multiplexing apparatuses 200. This is a monitoring control method of the monitoring control system 1000 having the monitoring control terminal 100. The complex multiplexing apparatus 200 includes a device-side storage unit 230, a device-side message communication unit 212, and a device-side line management unit 221. In the device-side storage unit 230, a plurality of pieces of line information that is information related to a plurality of lines is registered. The device-side message communication unit 212 communicates messages with the monitoring control terminal 100. The device side line management unit 221 manages a plurality of pieces of line information registered in the device side storage unit 230. The monitoring control terminal 100 includes a terminal side storage unit 130, an operation state detection unit 122, a deleted line identification unit 123, a terminal side message communication unit 112, and a terminal side line management unit 121. The terminal-side storage unit 130 registers a plurality of line information. The operation state detection unit 122 detects whether each of the plurality of composite multiplexing devices 200 is operating. Based on the detection result of the operation state detection unit 122, the deletion line specifying unit 123 specifies a line that needs to be deleted as a deletion target line among a plurality of lines that connect the plurality of composite multiplexing apparatuses 200. . The terminal-side message communication unit 112 communicates messages with the multiple complex multiplexing devices 200. The terminal side line management unit 121 manages a plurality of pieces of line information registered in the terminal side storage unit 130. Further, the device-side line management unit 221 registers or deletes line information in the device-side storage unit 230 in accordance with the message transmitted by the terminal-side message communication unit 112. The terminal-side line management unit 121 registers or deletes line information in the terminal-side storage unit 130 according to the message transmitted by the device-side message communication unit 212.

  The monitoring control method of the present invention includes a detection step, a deletion message transmission step, a deletion message reception step, a first device side line registration deletion step, a deletion completion message transmission step, and a terminal side line registration deletion step. Including. In the detection step, the operation state detection unit 122 detects whether or not each of the plurality of composite multiplexing devices 200 is operating. In the deletion message transmission step, when the operation state detection unit 122 detects the operating complex multiplexer 200 as the operating complex multiplexer 200 (operating communication device) in the detection step, the terminal side The message communication unit 112 transmits a deletion message for deleting the registration of the deletion target line specified by the deletion line specifying unit 123 to the complex multiplexing apparatus 200 in operation. In the deletion message receiving step, the device-side message communication unit 112 of the complex multiplexing apparatus 200 in operation receives the line deletion message. In the first device-side line registration deletion step, the device-side line management unit 221 of the complex multiplexing apparatus 200 in operation includes, among the pieces of line information registered in the device-side storage unit 230 in accordance with the line deletion message, Delete the registration of the line to be deleted. In the deletion completion message transmission step, the device-side message communication unit 212 of the complex multiplexing apparatus 200 in operation is a deletion completion message for notifying that the device-side line management unit 221 has deleted the deletion target line registration. Is transmitted to the monitoring control terminal 100. In the terminal-side line registration deletion step, when the terminal-side line management unit 121 receives the deletion completion message from the device-side message communication unit 212, the terminal-side line registration deletion step includes the deletion target line among the plurality of pieces of line information registered in the terminal-side storage unit 130. Delete registration.

  Even with such a monitoring control method, the same effects as those of the monitoring control system 1000 described above can be obtained.

  The monitoring control method according to the embodiment of the present invention includes a pseudo reception step and a second terminal side line registration deletion step. In the pseudo reception step, when the operation state detection unit 122 detects the complex multiplexer 200 that is not operating as a stopped complex multiplexer 200 (stopped communication device) in the detection step, the terminal side message The communication unit 122 performs a pseudo transmission process in which it is assumed that the line deletion message is transmitted to the stopped complex multiplexer 200. In the pseudo reception step, the terminal-side message communication unit 112 performs a pseudo reception process in which the line deletion completion message is regarded as having been received from the stopped complex multiplexer 200. In the second terminal side line registration deletion step, the terminal side line management unit 121 registers the deletion target line among the plurality of line information registered in the terminal side storage unit 130 according to the pseudo transmission step and the pseudo reception step. delete.

  Even with such a monitoring control method, the same effects as those of the monitoring control system 1000 described above can be obtained.

  In the description of the above embodiment, the focus is on deleting a disconnected line, but the present invention is not limited to deleting a line. Even if there is an uncontrollable composite multiplexing device, the same can be said for all device control performed from the supervisory control terminal 100, such as registration and testing of the composite multiplexing device.

  Further, it is assumed that all the complex multiplexing devices 200 are out of control. Even if all the complex multiplexing apparatuses 200 cannot be controlled, it is possible to update only the database of the monitoring control terminal 100 such as line information. From this, it can be said that the database of the monitoring control terminal 100 can be operated even in a place where the composite multiplexing apparatus 200 is not present (for example, on a desk in an office). As an application example, a database of the monitoring and control terminal 100 is created in advance in the office, and later, the database is combined and multiplexed at a site (where the monitoring control terminal 100 and the complex multiplexing apparatus 200 are installed). It is also possible to download to the apparatus 200 in one volume. As a result, it can be expected that the work time at the site can be shortened, which is effective when the work at the site must be completed within a few hours.

  The present invention has been described above based on the embodiment. The embodiment is an exemplification, and various modifications, increases / decreases, and combinations may be added to the above-described embodiments without departing from the gist of the present invention. It will be understood by those skilled in the art that modifications to which these changes, increases / decreases, and combinations are also within the scope of the present invention.

DESCRIPTION OF SYMBOLS 100 Monitoring and control apparatus 110 Terminal side communication part 111 Terminal side control connection request signal communication part 112 Terminal side message communication part 120 Terminal side control part 121 Terminal side line management part 122 Operation state detection part 123 Deleted line specification part 130 Terminal side memory | storage part 131 Complex Multiplexer A Line Registration Information Database 132 Complex Multiplexer B Line Registration Information Database 133 Complex Multiplexer C Line Registration Information Database 200a Complex Multiplexer A
200b Compound multiplexer B
200c Compound multiplexer C
DESCRIPTION OF SYMBOLS 200 Compound multiplexing apparatus 210 Apparatus side communication part 211 Apparatus side control connection request signal communication part 212 Apparatus side message communication part 220 Apparatus side control part 221 Apparatus side line management part 230 Apparatus side memory | storage part 231 Line registration information database 400 Network 510 Line 520 Line 1000 Monitoring and control system

Claims (5)

A monitoring control system having a monitoring control terminal for monitoring and controlling a plurality of communication devices and connection states of a plurality of lines connecting the plurality of communication devices,
The communication device
A device-side storage unit in which a plurality of pieces of line information that is information about the plurality of lines are registered;
A device-side message communication unit for communicating a message with the monitoring control terminal;
A device side line management unit for managing a plurality of line information registered in the device side storage unit,
The supervisory control terminal
A terminal-side storage unit in which the plurality of line information is registered;
An operation state detection unit for detecting whether each of the plurality of communication devices is operating;
Based on the detection result of the operation state detection unit, out of a plurality of lines connecting the plurality of communication devices, a deleted line specifying unit that specifies a line that needs to be deleted as a deletion target line;
A terminal-side message communication unit that communicates messages with the plurality of communication devices;
A terminal side line management unit for managing a plurality of line information registered in the terminal side storage unit;
The device-side line management unit registers or deletes the line information in the device-side storage unit according to the message transmitted by the terminal-side message communication unit,
The terminal side line management unit registers or deletes the line information in the terminal side storage unit according to the message transmitted by the device side message communication unit,
When the operation state detection unit detects an operating communication device as an operating communication device,
The terminal-side message communication unit transmits a line deletion message for deleting registration of the deletion target line specified by the deletion line specifying unit to the active communication device;
In the operating communication device, the device-side message communication unit receives the line deletion message, and the device-side line management unit, according to the line deletion message, stores a plurality of pieces of line information registered in the device-side storage unit The device-side message communication unit sends a line deletion completion message for notifying that the device-side line management unit has deleted the registration of the deletion-target line. Sent to the supervisory control terminal,
When the terminal-side line management unit receives the line deletion completion message from the device-side message communication unit, the terminal-side line management unit deletes the registration of the deletion target line from a plurality of pieces of line information registered in the terminal-side storage unit Control system. When the operation state detection unit detects a communication device that is not operating as a stopped communication device,
The terminal-side message communication unit performs a pseudo-transmission process in which the line deletion message is considered to have been transmitted to the stopped communication device, and receives the line deletion completion message from the stopped communication device. Perform pseudo-reception processing that is considered pseudo,
2. The terminal-side line management unit according to claim 1, wherein the terminal-side line management unit deletes the registration of the deletion target line from a plurality of pieces of line information registered in the terminal-side storage unit according to the pseudo transmission process and the pseudo reception process. Supervisory control system. The monitoring control terminal includes a terminal-side control connection request signal communication unit that transmits a control connection request signal for detecting whether or not each of the plurality of communication devices is operating to the plurality of communication devices. Have
The communication device has a device-side control connection request signal communication unit that responds to the control connection request signal transmitted by the terminal-side control connection request signal communication unit,
The monitoring control system according to claim 1, wherein the operation state detection unit detects a communication device that has responded by the device-side control connection request signal communication unit as the communication device during operation. A monitoring control method for a monitoring control system having a monitoring control terminal that monitors and controls a connection state of a plurality of communication devices and a plurality of lines connecting the plurality of communication devices,
The communication device
A device-side storage unit in which a plurality of pieces of line information that is information about the plurality of lines are registered;
A device-side message communication unit for communicating a message with the monitoring control terminal;
A device side line management unit for managing a plurality of line information registered in the device side storage unit,
The supervisory control terminal
A terminal-side storage unit in which the plurality of line information is registered;
An operation state detection unit for detecting whether each of the plurality of communication devices is operating;
Based on the detection result of the operation state detection unit, out of a plurality of lines connecting the plurality of communication devices, a deleted line specifying unit that specifies a line that needs to be deleted as a deletion target line;
A terminal-side message communication unit that communicates messages with the plurality of communication devices;
A terminal side line management unit for managing a plurality of line information registered in the terminal side storage unit;
The device-side line management unit registers or deletes the line information in the device-side storage unit according to the message transmitted by the terminal-side message communication unit,
The terminal side line management unit registers or deletes the line information in the terminal side storage unit according to the message transmitted by the device side message communication unit,
A detection step of detecting whether or not each of the plurality of communication devices is operating by the operation state detection unit;
In the detection step, when the operation state detection unit detects an operating communication device as an active communication device, the terminal-side message communication unit detects the deletion target line identified by the deletion line identification unit. a line deletion message transmission step of transmitting the line deletion message for deleting the registration to the operation in the communication device,
A device-side message communication unit of the operating communication device receives a line deletion message to receive the line deletion message; and
The device side line management unit of the active communication device deletes the registration of the line to be deleted from the plurality of line information registered in the device side storage unit according to the line deletion message. A line registration deletion step;
Line the device-side message communication unit of the operation in the communication device, it transmits a line deletion completion message for notifying that the registration of the deleted line is deleted by the device-side line management unit to the monitoring control terminal A deletion completion message sending step;
When the terminal-side line management unit receives the line deletion completion message from the device-side message communication unit, a terminal that deletes registration of the deletion target line from among a plurality of line information registered in the terminal-side storage unit And a side line registration deletion step. In the detection step, when the operation state detection unit detects an inactive communication device as a stopped communication device, the terminal-side message communication unit transmits the line deletion message to the stopped communication device. A pseudo-transmission step for performing pseudo-transmission processing that is regarded as pseudo-
A pseudo reception step in which the terminal-side message communication unit performs a pseudo-reception process in which the line deletion completion message is pseudo-received as received from the communication device being stopped;
A second terminal side line in which the terminal side line management unit deletes the registration of the deletion target line from the plurality of line information registered in the terminal side storage unit according to the pseudo transmission step and the pseudo reception step; The monitoring control method according to claim 4, further comprising a registration deletion step.

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