JP2001268264A - Terminal adaptor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a terminal adaptor that calculates throughput during data transfer and displays the calculation result, so as to allow an operator to easily grasp data transfer efficiency. SOLUTION: In the terminal adaptor 2A that connects a data terminal 3A to an ISDN line 1, a main control section 1 calculates the throughput, when data received from the data terminal 3A are sent to the ISDN line 1 for each prescribed time and displays the calculated throughput on a panel 26 via a panel control section 24.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal adapter for connecting a data terminal device to a line of an integrated digital communication network (hereinafter referred to as "ISDN line"), and more particularly to a terminal adapter for transferring data between data terminal devices. The present invention relates to a terminal adapter that calculates a throughput and displays the calculation result.

[0002]

2. Description of the Related Art A conventional terminal adapter is used, for example, when data is transferred from a data terminal device.
The data transfer status is visually displayed by lighting or blinking a data signal lamp composed of an LED.

There is also a method of connecting a line monitoring device to a communication line connecting a terminal adapter and detecting a throughput during data transfer between data terminal devices. For this purpose, a line monitoring device is separately provided. Needed to be easy.

[0004]

In the terminal adapter of the prior art, the efficiency of data transfer can be detected only by turning on or blinking a data signal lamp, thereby increasing line traffic and retransmitting transfer data. For this reason, even if the data transfer efficiency becomes very poor, the data transfer is continued, so that a long time is required for the data transfer and the communication cost is increased more than necessary.

Accordingly, an object of the present invention is to provide a terminal adapter which calculates the throughput during data transfer by the terminal adapter and displays the calculation result so that the operator can easily grasp the data transfer efficiency. Is to provide.

[0006]

According to the present invention, there is provided a terminal adapter for connecting a data terminal device to an ISDN line.
It is characterized by comprising throughput calculation means for calculating the throughput at the time of transmission to the SDN line at fixed time intervals, and display means for visually displaying the result calculated by the throughput calculation means.

[0007] Thus, the terminal adapter operator can grasp the data transfer efficiency at a glance.
When the data transfer efficiency is deteriorating, the data transfer can be interrupted by disconnecting the communication line.

[0008]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a system configuration diagram showing an embodiment of the present invention. In FIG. 1, a data terminal device (D
TE) 3A, 3B are the data terminal devices 3A,
3B is connected to terminal adapters 2A and 2B for performing interface conversion for connecting to ISDN line 1.
These terminal adapters 2A and 2B are connected to the ISDN line 1, respectively, and data is transferred between the data terminal devices 3A and 3B via the terminal adapters 2A and 2B and the ISDN line 1. It is configured to be able to.

FIG. 2 shows the terminal adapter 2 shown in FIG.
FIG. 2 is a block diagram showing an internal configuration of A and 2B. 2, terminal adapters 2A and 2B include a data terminal control unit (DTE control unit) 21, a main control unit 22, a line control unit 23, a panel control unit 24, a data transfer buffer 25, a display (LCD) and a panel 26 including various setting buttons.

The data terminal control unit 21 is an interface for connecting the data terminal devices 3A and 3B, and controls communication with the data terminal devices 3A and 3B by various control signals to transmit and receive data.

The line control unit 23 is an interface for connecting the ISDN line 1 and controls the transmission / reception of the ISDN line 1 by a control channel (D channel), and controls the communication channel (B1 channel or B2 channel).
Channel) for transmitting and receiving data.

The data transfer buffer 25 buffers data from the data terminal devices 3A and 3B received by the data terminal control unit 21, transfers the data to the line control unit 23, and also transmits the ISDN line received by the line control unit 23. 1 is buffered and transferred to the data terminal control unit 21.

The panel 26 includes a terminal adapter 2A,
It is provided on the front of the housing of 2B, displays setting information and communication information on a display, and inputs setting information such as a telephone number and communication conditions using a setting button.

The panel control unit 24 operates under the control of the main control unit 22, controls the display of the display of the panel 26, reads the setting information input from the setting button of the panel 26, and reads the setting information. This is to notify the control unit 22.

The main control unit 22 includes a data terminal control unit 21,
The terminal adapters 2A, 2B including the line controller 23 and the panel controller 24 for setting communication conditions, controlling transmission / reception of the ISDN line 1, controlling communication with the data terminal devices 3A, 3B, and controlling data transfer. Is to control the whole.

Hereinafter, in the system configuration shown in FIG.
The operation of the present embodiment will be described by taking data transfer from the data terminal device 3A to the data terminal device 3B as an example.

FIGS. 3 and 4 are flowcharts for explaining the operation of the embodiment of the present invention.

First, data transfer is started from the data terminal device 3A. When the data transfer is started, the terminal adapter 2A starts a timer (1 second) (Step S).
1) When the data terminal controller 21 receives data from the data terminal device 3A (step S2), the received data is stored in the data transfer buffer 25 (step S2).
3).

At this time, the total number (D) of data received from the data terminal device 3A is counted up (step S4), and the main controller 22 is notified that data has been received from the data terminal device 3A. . Then
The main control unit 22 instructs the line control unit 23 to transmit data to the ISDN line 1.

On the other hand, upon receiving the data transmission instruction, the line control unit 23 transmits the data received from the data terminal device 3A stored in the data transfer buffer 25 to the ISDN line 1.
(Step S5). Next, it is determined whether there is data received from the data terminal device 3A (step S6). If there is data received from the data terminal device 3A, the process returns to step 2 and the data transfer process is similarly continued. If there is no data received from the data terminal device 3A, the data transfer process to the partner terminal adapter 2B ends.

The terminal adapter 2A is an ISD
While sending data to the N-line 1, the timer (1
When an expiration interrupt occurs, this timer (1 second)
Of the expiration number (T) of the timer (step S)
10) After activating the timer (1 second) again (step S11), the throughput is calculated by the following equation.

Throughput (S) = total number of transfer data (D) / timer expiration count (T)

Then, the main controller 22 instructs the panel controller 24 to display the calculated throughput (S), and the panel controller 24 instructed to display the throughput (S) displays the panel 26. Throughput (S)
Is displayed (step S13).

Thereafter, every time a timer (1 second) expiration interrupt occurs, the number of times the timer (1 second) expires is counted up (step S10), the timer (1 second) is started (step S11), and the throughput is calculated. (Step S1
2) The throughput (S) is repeatedly and continuously displayed on the display of the panel 26 (step S13).

It should be noted that the call connection processing or the call disconnection processing of the ISDN line 1 is the same as the operation of a normal terminal adapter, and is not directly related to the main configuration of the present invention, so that the description is omitted.

The above description is based on the throughput (S)
Is displayed only, the minimum throughput is set and registered in advance from the setting button on the panel 26. If the calculated throughput (S) is lower than the set and registered minimum throughput, an audible sound or lamp blinking is displayed. The operation state can be displayed by performing a predetermined display.

If the calculated throughput (S) is continuously lower than the set minimum registered throughput for a predetermined time, the ISDN line 1 is automatically disconnected, and the Communication can be prevented, and communication costs can be reduced.

[0029]

As described above, according to the present invention, the data transfer efficiency using the terminal adapter can always be grasped. When the data transfer efficiency is low, the communication is temporarily interrupted, and when the data transfer efficiency is high. Since the data transfer can be performed again, the time required for the data transfer and the communication cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a system configuration diagram showing an embodiment of the present invention.

FIG. 2 is a block diagram showing an internal configuration of the terminal adapter of the present invention.

FIG. 3 is a flowchart illustrating an operation of the exemplary embodiment of the present invention.

FIG. 4 is a flowchart illustrating an operation of the exemplary embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ISDN line 2A, 2B Terminal adapter 3A, 3B Data terminal device 21 Data terminal control unit 22 Main control unit 23 Line control unit 24 Panel control unit 25 Data transfer buffer 26 Panel

 ──────────────────────────────────────────────────続 き Continued on the front page F-term (reference) NN21 9A001 BB04 CC04 DD11

Claims (1)

[Claims] 1. A terminal adapter for connecting a data terminal device and an ISDN line, wherein a throughput calculating means for calculating a throughput when sending data received from the data terminal device to the ISDN line at regular time intervals; A display unit for visually displaying a result calculated by the throughput calculation unit.