JPH0287848A - Connecting system for electronic automatic exchange and computer - Google Patents

Abstract

PURPOSE:To effectively use a computer by releasing a data terminal, when a data communication monitoring means detects an interruption of data communication, and also, a job monitoring means a fact that a job is not executed. CONSTITUTION:When it is detected that data communication between a computer 31 and a data terminal 30 is interrupted exceeding a prescribed time, based on information from a timepiece circuit 33, and also, it is detected that the computer 31 is not executing a jog of the data terminal 30, and the interruption of the data communication and a stop of the execution of the job are both detected, a data line is released forcibly. In such a way, it is prevented that the specific data terminal 30 occupies insignificantly the data line extending over many hours, and it becomes possible to execute an access to the computer 31 from other data terminal 30 through a released line.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a connection system between an electronic exchange and a computer.

[Conventional technology]

Conventionally, in this type of connection system between an electronic exchange and a computer, when the computer and data terminal are connected through the exchange's call path network, the computer and data terminal are not connected until a recovery request is issued from the data terminal side. is disconnected, and the data line connecting the exchange and computer is restored. That is, the data line connecting the exchange and computer will not be restored unless the operator of the data terminal sends a data line restoration request.

[Problem to be solved by the invention]

Therefore, in the conventional connection method between an electronic exchange and a computer, even if the data terminal and computer do not perform data communication and the computer is not executing a job for the data terminal, if the operator does not issue a recovery request, The data line remains connected, and no other users can access the computer through it. Since the number of data lines connecting exchanges and computers is limited, when there are many users and the data lines are congested, 1. Access to the computer from the data terminal becomes impossible.

SUMMARY OF THE INVENTION An object of the present invention is to provide a connection method between an electronic exchange and a computer that solves these problems and allows a large number of users to use the computer effectively.

[Means to solve the problem]

The present invention provides a connection system between an electronic exchange that accommodates a data terminal and a computer, which includes: a storage device that stores the line number of the data terminal; a clock circuit; data communication monitoring means for detecting that data communication with the data terminal has been interrupted for a predetermined period of time; job monitoring means for detecting that the computer is not executing a job for the data terminal; and the data terminal are connected, when the data communication monitoring means detects an interruption in data communication and the job monitoring means detects that the job is not being executed, the data terminal is restored. a terminal recovery means that detects based on information from the clock circuit that a certain period of time has elapsed after the terminal recovery means recovered the data terminal; The present invention is characterized by further comprising terminal connecting means for connecting the data terminal to the computer using a line number.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of a connection system between an electronic exchange and a computer according to the present invention. This system includes a communication network 1, a central control unit (CPU) 2, a subscriber circuit 10, data line circuits 11 and 12, a computer 31, data line termination equipment (DCE) 21, 22, a clock circuit 33, and a storage device. 32.

The communication path network 1 forms communication paths under the control of the central control device 2, and connects, for example, a data terminal 30 and a computer 31. A multi-function telephone 20 is connected to the data terminal 30, and the multi-function telephone 20 is connected to a telephone line, 11i, through a data line 50 and a subscriber circuit 10.

The communication network 1 and the computer 31 are connected to two data lines 4.
1.42, and one end of these data lines is
Each of them is connected to the communication path network 1 through data line circuits 11 and 12, and the other end is connected to a computer 31 through DCEs 21 and 22, respectively.

The central control unit 2 is connected to the subscriber circuit 10 and the data line circuits 11, 12 by control lines. Further, the clock circuit 33 and the storage device 32 are connected to the computer 31. For simplicity, only the terminal 30 is shown in the figure as a data terminal connected to the communication path network 1, but in reality, a plurality of data terminals including this terminal are connected to the communication path w11.

In this system, the computer 31 not only executes various jobs for data terminals, but also performs processing related to data line recovery, which will be described later.

Next, the operation of this system will be explained using the flowchart shown in FIG. A communication path A is formed in the communication path network 1,
When the data line 50 to which the data terminal 30 is connected and the data line 41 to which the computer 31 is connected are connected (step 100), the computer 31
operates as a data communication monitoring means, and based on the information from the clock circuit 33, the data terminal 30 and the computer 31
It is checked whether data communication with the data terminal 30 has been interrupted for a certain period of time or more, and further, it is checked whether the computer 31 is executing the job of the data terminal 30 by acting as a job monitoring means (step 101).

Then, when the data communication is interrupted for a certain period of time or more and the job of the data terminal 30 is not executed, the computer 31 sends a data line disconnection request to the DCE 21, and also connects the data line to which the data terminal 30 is connected. The number 50 is stored in the storage device 32 (step 102). D
The CE 21 sends a data line disconnection request to the data line circuit 11 in response to the above request from the computer 31, and at step 103), the data line circuit 11 transmits the request to the CPU.
Output to 2. When the CPU 2 receives this data line disconnection request, it controls the communication path M41 and disconnects the data line 41.5.
0 is forcibly restored (step 104). With the above operations, the computer 31 and CPU 2 are operating as a terminal recovery means.

As described above, in the connection method between an electronic exchange and a computer according to the present invention, even if a data terminal and a computer are connected, data communication is not performed for a certain period of time and the computer is not executing a job for the data terminal. The data line will be forcibly restored. Therefore, it is possible to prevent a specific data terminal from occupying the data line for a long period of time.

After the line 41.50 is forcibly restored, if a certain period of time has passed without any access from the data terminal 30 to the host computer 31 (step 105), the computer 3
1 reads the number of the line 50 to which the data terminal 30 that has been forcibly restored is connected from the storage device 32, and searches for an empty DCE (step 106).

For example, if the DCE 21 is busy and the DCE 22 is empty, the computer 31
22, a data call request is sent using the read data line number (step 107). As a result, DCE22
sends a data call request to the data line circuit 12 (step 108), and the CPU 2 receives it from the data line circuit 11 and controls the communication path network 1. Then, a communication path B connecting the line 50 and the line 42 is formed to enable data communication between the data terminal 30 and the computer 31 (step 109).

That is, even if the data terminal 30 is forcibly disconnected, after a certain period of time has passed, if the DCE is free, it is automatically connected to the computer and data communication can be resumed.

〔Effect of the invention〕

As explained above, in the connection method between an electronic exchange and a computer according to the present invention, even if a data terminal and a computer are connected, data communication is not performed for a certain period of time, and the computer is not executing a job for the data terminal. If not, the data line is forcibly restored. As a result, a specific data terminal is prevented from occupying the data line for a long period of time, and other data terminals can access the computer through the restored line. Therefore, with the connection system between an electronic exchange and a computer according to the present invention, the computer can be used effectively by a large number of users.

FIG. 1 is a block diagram showing an embodiment of a connection method between an electronic exchange and a computer according to the present invention, and FIG. 2 is a flowchart explaining the operation of the embodiment of FIG.

1...Call network 2...Central control unit 10...Subscriber circuits 11, 12...Data line circuits 21, 22...Circuit termination equipment (DCE) 31 ...
...Computer 32...Storage device 33...Clock circuit 41, 42.50...Data line agent Patent attorney Yoshiyuki Iwasa

[Brief explanation of the drawing]

Claims (1)

[Claims] (1) A connection method between an electronic exchange that accommodates a data terminal and a computer, which includes: a storage device that stores the line number of the data terminal; a clock circuit; and a system that connects the computer and the computer based on information from the clock circuit. data communication monitoring means for detecting that data communication with a data terminal has been interrupted for a predetermined period of time; job monitoring means for detecting that the computer is not executing a job for the data terminal; When the data communication monitoring means detects an interruption in data communication while the data terminal is connected, and the job monitoring means detects that the job is not being executed, the data terminal is restored. a terminal recovery means, which detects based on information from the clock circuit that a certain period of time has elapsed after the terminal recovery means recovered the data terminal, and detects the line stored in the storage device at that time; 1. A connection system between an electronic exchange and a computer, comprising terminal connection means for connecting the data terminal to the computer using a number.