JP3121897B2 - Communication network monitoring equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a monitoring device for controlling a line as a node in a communication network.

[0002]

2. Description of the Related Art In a conventional monitoring apparatus for a communication network, only a single interface line such as an analog line or a digital line is connected as a communication line connected to the monitoring device.

[0003]

Therefore, in the above-described conventional communication network monitoring device, for a complicated network in which a plurality of types of interfaces are mixed, another monitoring device or interface conversion device is installed for each interface. I needed to. Even if an analog line and a digital line are mixed and connected to the monitoring device, if the data from the analog line is returned to the analog line when responding to polling, the monitoring device simply passes through. Although there is no problem, when data from the digital line is sent to a monitoring device connected via a higher-level analog line, transmission cannot be performed simply by converting this data to an analog signal using a modem. It is necessary to do. The present invention has been made in view of the above problems, and an object of the present invention is to provide a monitoring device that can appropriately control an analog line and a digital line even if the line is mixed in a communication network.

[0004]

In order to solve the above technical problem, the means of the present invention is connected to an uppermost main monitoring device 1 as shown in FIG. And a plurality of slave monitoring devices 2i (i = a, to n).
Alternatively, the slave monitoring device 2i is connected via an analog line via the modem unit 7, and one or a plurality of slave monitoring devices 2i are connected via the lines at the lower level, and at least one digital signal is connected to these lines. A communication network including a line and performing communication based on a polling service from the main monitoring device, wherein the sub-monitoring device is connected to a sub-monitoring device connected to a lower level of the sub-monitoring device by a digital line; A connection configuration registration unit 6 in which the address information of the transmission monitoring device 2i is registered; a reception analysis unit 3 which fetches and analyzes data transmitted through the slave monitoring device 2i and extracts address information of a transmission destination included in the data; An address discriminating unit 4 for discriminating whether or not the information corresponds to the address information registered in the connection configuration registering unit 6; When it is determined that the person to is to have a carrier indicator unit 5 for instructing the start-up of the carrier to the modem unit 7.

[0005]

The operation of the above means will be described. Here, for the sake of simplicity of explanation, for example, the main monitoring device 1 is connected to the slave monitoring device 2a via an analog line and connected to the slave monitoring device via a digital line in the lower order. It is assumed that the monitoring device 2b is connected to the slave monitoring device 2c via an analog line.

[0006] Each of the slave monitoring devices 2a, 2b, and 2c is provided with address information for specifying the device. The connection configuration registration unit 6 of the slave monitoring device 2a has a lower-level digital information. The address information of the slave monitoring device 2b connected by the line is registered in advance. Then, when the communication is started, a polling service is performed from the main monitoring device 1 to each of the slave monitoring devices 2 connected thereto. This service is provided, for example, by the slave monitoring devices 2a, 2
Addresses are designated in the order of b and 2c, while each of the slave monitoring devices 2a, 2b and 2c responds only when the address information included in the polling data corresponds to the own device.

When the slave monitoring device 2a receives the polling, the slave monitoring device 2a receives the polling data and branches the polling data to send it directly to the slave monitoring device 2c connected via an analog line. At the same time, the polling data received by the present apparatus 2a is demodulated via the modem unit 7 and converted into digital data, which is branched and sent to the slave monitoring apparatus 2b via a digital line. It is taken into the reception analysis unit 3 in the device 2a. The reception analysis unit 3 extracts address information included in the polling data and passes it to the address determination unit 4.

The address discriminating section 4 which has received the address information searches the connection configuration registering section 6 to determine whether or not there is a registration corresponding to the address information. At this time, if the polling service is for the slave monitoring device 2b, the address information is registered in the connection configuration registering unit 6, so that it is determined. If the registration is determined, the carrier instruction unit 5 instructs the modem unit 7 to start up the carrier, and the modem unit 7 starts transporting the carrier.

On the other hand, the slave monitoring device 2b that has received the polling service returns a response message to the polling service. This response message is sent to the device 2a via a digital line. Then, the response message is sent to the modem unit 7 as it is, and since the carrier has already been started in the modem unit 7 as described above, the response message from the slave monitoring device 2b is modulated into an analog signal together with the carrier. It is sent to the main monitoring device 1 via an analog line.

[0010] Incidentally, the polling service is the slave monitoring device 2c.
In this case, since the address information is not registered in the connection configuration registration unit 6, the present apparatus 2a does nothing, and the polling data and the response data from the slave monitoring apparatus 2c simply pass through the present apparatus 2a. Only. If the polling service is for the present apparatus 2a, a response message to this polling is created inside the present apparatus 2a, and the carrier instructing unit 5 instructs the modem unit 7 to start up the carrier. This response message is returned.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments according to the present invention will be described below in detail with reference to the drawings. FIG. 2 illustrates a network configuration of the communication network monitoring device according to the present embodiment.
In this network configuration, a main monitoring device 21 is disposed at the highest level, and a sub monitoring device 22a is disposed below the main monitoring device 21 via a voice line. Further, subordinate monitoring devices 22b and 22c are connected to the subordinate monitoring device 22a via a voice line, and subordinate monitoring devices 22d and 22e are connected to the subordinate monitoring device 22d via a digital line. As shown, the slave monitoring devices 22f to 22j are connected in a tree shape via a voice line or a digital line.

FIGS. 3 and 4 show the internal configuration of the slave monitoring device 22a. This device includes a transformer section 30 for interfacing with a voice line, an amplifier 31 for amplifying a signal, an interface conversion section 32 for performing interface conversion, a modem section 27 for modulating and demodulating data,
A control unit 29 mainly composed of a CPU and instructing the modem unit 27 to start a carrier is provided.

As for the details of the control unit 29, as shown in the block diagram of FIG. 5, a connection configuration registration unit 26 which registers address information of a monitoring device connected by a digital line below the monitoring device 22a, , A reception analysis unit 23 which takes in and analyzes data and extracts address information of a destination included in the data, an address determination unit 24 which determines the address information, and a carrier instruction unit which instructs the modem unit 27 to start up the carrier 25, a data processing unit 28 that creates predetermined communication data, and a transmission control unit 33 that performs data transmission control.

Each slave monitoring device 22a to 22j in the communication network is assigned an address in advance. Then, a polling service in which the above address is specified is performed from the main monitoring device 21, and communication is performed based on the service. In the connection configuration registration unit 26, the address information of the secondary monitoring devices connected by digital lines below the device 22a, that is, the secondary monitoring devices 22d and 22e are registered in advance.

Here, the operation of the communication network monitoring apparatus according to the present embodiment will be described with reference to the flowchart shown in FIG. Poll data relating to the polling service from the main monitoring device 21 is simultaneously sent to all the sub-monitoring devices 22a to 22j connected below the polling service (S
T1) On the other hand, on the slave monitoring device side, only the slave monitoring device corresponding to the address included in the poll data responds thereto. For this reason, if the poll data is received by one slave monitoring device, it is further transmitted to another slave monitoring device connected below this slave monitoring device (see FIG. 3). When transmitting via a voice line, a carrier is output only when responding to a polling service in order to prevent collision between carriers.

When the slave monitoring device 22a receives the poll data, it receives the poll data via the transformer unit 30a.
In addition, the polling data is branched, amplified by the amplifier 31, and further transmitted to the slave monitoring devices 22b and 22c connected via an analog line via the transformer 30b. At the same time, the polling data taken into the device 22a is demodulated via the modem unit 7 and converted back to digital data, which is further branched and transmitted via the interface conversion unit 32, and transmitted via the digital line. The data is sent to the slave monitoring devices 22d and 22e, and this data is taken into the reception analyzer 23 in the slave monitoring device 22a (ST).
2). The reception analysis unit 23 extracts address information included in the data and passes it to the address determination unit 24.

In the address discriminating section 24 receiving the address information, first, this polling service is provided by the present apparatus 2
It is checked whether or not the connection is for the other device (ST3). If this is for another device, the connection configuration registration unit 2
6 to determine whether or not there is a registration corresponding to the address information (ST4). At this time, if the polling service is for the subordinate monitoring device 22d, this address information is registered in the connection configuration registration unit 26, so that this is determined. If the registration is determined, the carrier instructing unit 25 instructs the modem unit 27 to start up the carrier, and the modem unit 27 starts transporting the carrier (ST5).

On the other hand, the slave monitoring device 22d receiving the polling service returns a response message to the polling service. This response message is sent to the device 22a via a digital line. Then, the response message is transmitted to the modem unit 27 via the interface conversion unit 32.
Since the carrier has already been set up in the modem unit 27 as described above, the response message is modulated into an analog signal together with the carrier, sent out via the transformer unit 30a, and sent to the main monitor via the analog line. It is sent to the device 21 (ST6). When the transmission of the response message is completed, the carrier instruction unit 25 instructs the modem unit 27 to stop the carrier, and the modem unit 27 stops the carrier conveyance (ST7).

The polling service is provided by the
a (a) (ST3), the address discriminating unit 2
4 to determine that the address included in the poll data is for the present apparatus 22a. The data processing unit 28 creates a response message to this polling (ST8), instructs the modem unit 27 to start up the carrier (ST9), and transmits the response message created by the device 22a to the transmission control unit 33. (ST10), and when the transmission of the response message is completed, the modem unit 27 stops the carrier transport according to the carrier stop instruction of the carrier instruction unit 25 (ST11).

The polling service is provided by the device 2
If the address 2a is for the slave monitoring device 22c connected by a voice line, this address is not registered in the connection configuration registration unit 26, so the device 22a does nothing except amplify it with the amplifier 31, The polling data and the response data from the slave monitoring device 22c are simply
a.

The digital data cannot be transmitted simply by converting it into an audio signal by the modem unit 27. Carrier control is performed separately from this, and the above-mentioned audio signal is applied to this carrier wave and modulated. There is a need to. In the present embodiment, the connection configuration registration unit 2 in the slave monitoring device 22a is set in advance.
6, a carrier is output not only when the present device 22a returns a response message, but also when the slave monitoring devices 22d and 22e connected to the present device 22a via a digital line return a response message. (See FIG. 7).

Therefore, the secondary monitoring device 2 in the above embodiment is used.
In 2a, the modem unit 27 appropriately responds to a response message from the slave monitoring device 22d or the like connected to this by a digital line.
Is carried out, the response message can be transmitted to the higher-level main monitoring device 21 connected via an analog line. For this reason, since the voice line and the digital line can coexist in the same slave monitoring device, there is an effect that a communication network can be effectively configured with a minimum number of monitoring devices.

[0023]

As described above, according to the present invention,
It has a top-level main monitoring device 1 and a plurality of sub-monitoring devices 2i connected in a tree shape from the top to the main monitoring device 1. The main monitoring device 1 or the sub-monitoring device 2 above the sub-monitoring device 2i
i is connected via an analog line via a modem unit 7, and is connected via at least one digital line to a lower slave monitoring device 2i, and communicates based on a polling service from the main monitoring device 1. In the communication network, the slave monitoring device 2i registers the address information of the transmission destination from the polling data with the connection configuration registration unit 6 that registers the address information of the slave monitoring device 2i connected by a digital line below. The reception analysis unit 3 to be extracted, the address determination unit 4 that determines whether the address information corresponds to the address information registered in the connection configuration registration unit 6, and the modem unit 7 are instructed to start up the carrier. Since the configuration including the carrier instruction unit 5 is adopted, an analog line and a digital line can be mixedly connected to the same slave monitoring device. In an effect of effectively communications network by the number of minimal monitoring device can be constructed.

[Brief description of the drawings]

FIG. 1 is a principle configuration diagram of the present invention.

FIG. 2 is a diagram showing a communication network configuration according to an embodiment of the present invention.

FIG. 3 is a configuration diagram of a slave monitoring device when polling is received from a master monitoring device according to the embodiment.

FIG. 4 is a configuration diagram of a slave monitoring device when responding to polling from the master monitoring device according to the embodiment.

FIG. 5 is a configuration diagram of a control unit provided in the slave monitoring device according to the embodiment.

FIG. 6 is a flowchart illustrating an operation of the slave monitoring device according to the embodiment.

FIG. 7 is a diagram illustrating carrier control in communication between a master monitoring device and a slave monitoring device according to the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main monitoring device 2i Secondary monitoring device 3 Reception analysis unit 4 Address discrimination unit 5 Carrier instruction unit 6 Connection configuration registration unit 7 Modem unit

Claims (1)

(57) [Claims] 1. An apparatus according to claim 1, further comprising an uppermost main monitoring device (1), and a plurality of subordinate monitoring devices (2i, i = a,... The device (2i) is connected to an upper-level main monitoring device (1) or a higher-level monitoring device (2i) via an analog line via a modem unit (7), and one or more lower-level monitoring devices are positioned at a lower level. A communication network connected to each of the devices (2i) via a line, including at least one digital line, and performing communication based on a polling service from the main monitoring device (1); The slave monitoring device (2i) includes a connection configuration registration unit (6) that registers address information of the slave monitoring device (2i) connected by a digital line below the slave monitoring device (2i); Data passing through (2i) A reception analysis unit (3) that fetches and analyzes and extracts address information of a transmission destination included therein; and whether the address information of the transmission destination corresponds to the address information registered in the connection configuration registration unit (6). And a carrier instructing unit (5) for instructing the modem unit (7) to start up the carrier when the address discriminating unit (4) determines that the above condition is satisfied. And a communication network monitoring device.