JP2925215B2 - Line control system and line control device used in the line control system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Summary] A line control system comprising a plurality of line control adapters each accommodating a plurality of lines, and having a system management unit for centrally managing the plurality of line control adapters. A plurality of line control adapters each accommodating a plurality of lines, for the purpose of enabling maintenance or the like of the line control adapter in which the failure has occurred without stopping the line operating at a time. In a line control system having a system management unit that centrally manages the line control adapters, each of the line control adapters holds network information holding means for holding information on connection of a line accommodated by itself to a network, Line abnormality detecting means for detecting an abnormality of a line accommodated therein, and an abnormality notifying means for notifying the system management unit of the abnormality of the line. Stage, network information notifying means for notifying information about the connection with the network, line disconnection means for disconnecting the connection to the network in the line accommodated in its own line control adapter according to control from the system management unit, Line connection means for controlling a network accommodated in its own line control adapter according to control from the system management unit and a network connection unit, wherein the system management unit manages the use status of the plurality of line control adapters Usage management means;
Network disconnection instructing means for instructing the line control adapter to disconnect from the network on another line used by the line control adapter upon receiving notification of a line abnormality in the line control adapter; For unused lines in the control adapter,
And a network connection instructing unit for instructing realization of connection of the network instructed to disconnect.

[Industrial applications]

The present invention relates to a line control system further including a plurality of line control adapters each accommodating a plurality of lines, and having a system management unit for centrally managing the plurality of line control adapters.

At present, communication control is indispensable in computers. In particular, in recent years, there has been an increasing demand for faster communication and more lines. For this reason, a product that can control a plurality of lines with one line control adapter has been commercialized.

[Problems to be solved by conventional technology and invention]

Conventionally, if one line of a single line control adapter accommodating a plurality of lines becomes malfunctioning due to a failure, to maintain the line control adapter,
At that time, it is necessary to disconnect the other line being used and stop the line control adapter. Therefore, conventionally,
Assuming that one line of the line control adapter malfunctions due to a failure, the maintenance of the line control adapter requires another normal line being used by the line control adapter at that time. And those lines must be reconnected by the user.

The present invention has been made in view of the above problems, and has been made in consideration of the following.
If an error occurs in one of the line control adapters and there is a free line in the other line control adapter, the other line in use by the line control adapter that accommodates the line in which the above error occurred is automatically A line control system capable of switching to a vacant line of the other line control adapter and easily starting maintenance on the line control adapter accommodating the abnormal line, and such a line control system. It is an object of the present invention to provide a line control device to be used.

[Means for solving the problem]

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

In FIG. 1, 1 is a system management unit, 2i is one of a plurality of line control adapters, 31 to 3n are a plurality of line corresponding units,
4 is a network information holding unit, 5 is a line abnormality detection unit, 6 is an abnormality notification unit, 7 is a network information notification unit, 8 is a line connection unit, 9 is a line disconnection unit, 11 is an adapter use status management unit, and 12 is a network. Disconnection instruction means,
Reference numeral 13 denotes a network connection instruction unit.

The line control system shown in FIG. 1 is a line control system further including a plurality of line control adapters each accommodating a plurality of lines, and having a system management unit for centrally managing the plurality of line control adapters.

Each of the line control adapters 2i includes a network information holding unit 4, a line abnormality detection unit 5, an abnormality notification unit 6,
A network information notifying unit, a line connecting unit, and a line disconnecting unit;
And network disconnection instructing means 12 and network connection instructing means 13.

In each line control adapter 2i, the network information holding unit 4 holds information on the connection of the line accommodated by itself to the network.

The line abnormality detecting means 5 detects an abnormality of the line accommodated therein.

The abnormality notification unit 6 notifies the system management unit 1 of the abnormality of the line.

The network information notifying unit 7 notifies information on the connection to the network.

The line disconnecting means 9 disconnects a line accommodated in its own line control adapter from being connected to the network under the control of the system management unit 1.

The line connection means 8 connects a line accommodated in its own line control adapter to a network under the control of the system management unit 1.

In the system management unit 1, an adapter usage status management unit 11 manages the usage status of the plurality of line control adapters.

Upon receiving the notification of a line abnormality in a certain line control adapter, the network disconnection instruction unit 12 instructs the line control adapter to disconnect from the network on another line used by the line control adapter.

The network connection instructing means 13 instructs to realize a connection with the network that has instructed the disconnection, on an unused line of another line control adapter.

[Action]

In each line control adapter 2i, the line abnormality detecting means 5
When the abnormality of the line accommodated by itself is detected, the abnormality is notified to the system management unit 1 by the abnormality notification means 6. Further, the network information notifying unit 7 notifies the system management unit 1 of the information held in the network information holding unit 4 regarding the connection of the line accommodated by the network information to the network.

In the system management unit 1, the adapter usage status management unit 11 manages the usage status of the plurality of line control adapters, and the network disconnection instruction unit 12 receives a notification of a line abnormality in a certain line control adapter. And instructs the line control adapter to disconnect from the network on another line used by the line control adapter. The line disconnecting means 9 of the line control adapter 2i disconnects the connection of the line accommodated in its own line control adapter to the network under the control of the system management unit 1. Next, the network connection instructing means 13 of the system management unit 1 instructs to realize the connection with the network for which the disconnection has been instructed, on an unused line of another line control adapter. Line control adapter
The line connection means 8 of 2i connects a line accommodated in its own line control adapter to a network under the control of the system management unit 1.

Here, the connection is made by the network information notifying means 7 based on the information on the connection to the network of the line accommodated therein notified to the system management unit 1.

〔Example〕

FIG. 2 is a diagram showing a hardware configuration of an office computer provided with a plurality of line control adapters each accommodating a plurality of lines as an embodiment of the present invention.

In FIG. 2, reference numeral 10 denotes a system management unit, 21 and 22.
Are two-line control adapters, respectively. In each of the two-line control adapters 21 and 22, 23 and 41 are MPUs, 24 and 42, respectively.
Is the interface to the system management unit, 25 and 43 are the memories, 26 to 29 are the line control units, and the system management unit 10
In the figure, 44 is an MPU, 45 is an interface, 46 is a memory, and 47 is an I / O control unit.

As shown in FIG. 2, the two-line control adapter 21
The two-line control adapter 22 has line controllers 28 and 29 corresponding to the two lines C and D, respectively. The line control adapter receives the serial data transmitted on the line, assembles characters, passes it to the application program on the CPU of the computer, and conversely decomposes the output of the application program into serial data and places it on the line. Send. For this purpose, the line control adapter performs processing of assembling and disassembly of characters, monitoring of lines, connection, disconnection, error control, and transmission control.

These functions are mainly performed by the line control unit 26 (or 27).
Is realized by a commercially available dedicated LSI. MPU23
(Or 41) mainly performs communication control with the system management unit 10 including control according to the present invention described below. Memory (RAM) 25 is used as a data buffer and MPU 23
(Or 41) used as program development and work area.

The system management unit 10 controls data transfer to and from the line control adapter, and performs instruction control such as connection and disconnection of the line to the line control adapter. Line control is also controlled by the present invention described below, and The MPU 44 manages the usage of the line control adapters 21 and 22, and has an MPU 44, an interface 45, a memory (RAM) 46, and an I / O control unit 47.

The control procedure in the embodiment of the present invention having the configuration shown in FIG. 2 is shown in FIG. In the following, the fourth
An example of control for switching from the connection state shown in the figure to the connection state shown in FIG. 5 will be described.

As shown in FIG. 4, the line control adapter of FIG.
When two lines A and B of 21 are in use and the line control adapter 22 is only using one line C and an abnormality occurs in the line A, the line control adapter 21 The operation is suspended, and an error of the line A is notified to the system management unit 10.

On the other hand, the system management unit 10 that manages the usage status of each of the line control adapters 21 and 22 confirms whether there is an unused line that is not used in the other line control adapters 22, If there is a free line, a network environment setting data request signal is transmitted to the line control adapter 21.

Upon receiving the network environment setting data request signal, the line control adapter 21 is connected to the communication partner B 'via the exchange, and the network environment setting data (for example, the communication procedure, The line speed, destination, telephone number, etc., which are usually stored in the line control unit 26 or the memory 25) are confirmed, and this data is transmitted to the system management unit 10.

Upon receiving the network environment setting data, the system management unit 10 sets the data in a predetermined area of the memory 46, and gives an instruction to disconnect the line B to the line control adapter 21.

The line control adapter 21 starts the disconnection operation of the line B in response to the disconnection instruction, and when the disconnection operation ends, notifies the system management unit 10 of the line disconnection completion notification.

Upon receiving the above-described line disconnection completion notification, the system management unit 10 terminates the line disconnection operation in the system management unit 10 and starts the line connection operation of the substitute line D to the line control adapter 22. The line connection instruction of the line D is transmitted to the adapter 22 together with the network environment setting data of the line B.

When the line control adapter 22 receives the line connection instruction of the line D and the network environment setting data, the line control adapter 22 starts the line connection operation of the line D, as shown in FIG.
When the connection operation is completed, a line connection completion notification is sent to the system management unit 10, and the operation returns to the normal operation. Here, for the communication partner B 'with the original line B, before disconnecting the line,
A predetermined code is transmitted after the connection, and the communication partner B 'confirms that the predetermined code matches before disconnection of the line and after the connection.
Can continue communication with almost no influence of switching.

Upon receiving the line connection completion notification, the system management unit 10 returns to the normal operation.

〔The invention's effect〕

Thus, according to the present invention, when an abnormality occurs in a line having one line control adapter, if there is an empty line in another line control adapter, the line control adapter accommodating the line in which the abnormality has occurred is provided. The other line in use is automatically switched to an idle line to the other line control adapter. Therefore, it is possible to easily start the maintenance for the line control adapter accommodating the line in which the abnormality has occurred.

[Brief description of the drawings]

FIG. 1 is a basic configuration diagram of the present invention, FIG. 2 is a hardware configuration diagram of an embodiment of the present invention, FIG. 3 is a diagram showing a control procedure in the embodiment of the present invention,
FIG. 4 and FIG. 5 are diagrams showing connection forms before and after switching in the embodiment of FIG. [Description of Signs] 1... System management unit, 2i... One of a plurality of line control adapters, 31 to 3n... , 6 ... abnormality notification means, 7 ... network information notification means, 8 ...
Line connection means, 9: Line disconnection means, 11: Adapter use status management means, 12: Network disconnection instruction means, 13
... Network connection instruction means, 10 ... System management unit, 21,22 ... Two line adapter, 23,41 ... MPU, 24,42 ...
... Interface to system management unit, 25,43 ... Memory, 26-29 ... Line control unit, 44 ... MPU, 45 ... Interface, 46 ... Memory, 47 ... I / O control unit.

 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-57-15545 (JP, A) JP-A-3-13015 (JP, A)

Claims (2)

(57) [Claims] A plurality of line control adapters (2i) each accommodating a plurality of lines, the plurality of line control adapters (2i) being provided.
In a line control system having a system management unit (1) for centrally managing i), each of the line control adapters (2i) has a network which holds information on connection with a communication partner of a line accommodated therein. An information holding unit (4), a line abnormality detecting unit (5) for detecting an abnormality of a line accommodated therein, an abnormality notifying unit (6) for notifying the system management unit (1) of the line abnormality, Network information notification means (7) for notifying the system management unit (1) of information on connection with the communication partner;
Line disconnecting means (9) for disconnecting a connection with a communication partner on a line accommodated in its own line control adapter in accordance with an instruction from the system management unit (1); and an instruction from the system management unit (1). Line connection means (8) for connecting a line accommodated in its own line control adapter to a network according to the above. The system management unit (1) manages the use status of the plurality of line control adapters (2i). When receiving notification of a line abnormality in a certain line control adapter, the adapter use status management means (11) performs a request for a line other than the abnormal line used by the line control adapter. A network disconnection instructing unit (12) for instructing disconnection from the network; and the network notified by the network information notifying unit (7). Information about connection with a communication partner of a line other than the abnormal line for which disconnection was instructed by the network disconnection instruction means (12) to another line control adapter having an unused line, and A line connection system comprising: a network connection instructing means (13) for instructing to establish a connection with the communication partner who instructed the disconnection on a line that has not been disconnected. 2. A management means for managing the use status of a plurality of line control adapters each accommodating a plurality of lines, and upon receiving a notification of a line abnormality in a certain line control adapter, the line control adapter Network disconnection instruction means for instructing disconnection from the network on a line other than the line in which an abnormality has occurred, which is used in the line control adapter, and the network disconnection instruction for another line control adapter having an unused line And a network connection instructing means for instructing connection to a network so as to connect to a communication partner of the line for which disconnection has been instructed by means.