JPH0630081A - Modem device - Google Patents

Abstract

PURPOSE:To monitor line data without incorporating an on-line monitoring function in a modem device main body and without requiring connection change even while an operation or test is being performed. CONSTITUTION:A terminal 3c for on-line monitor connection from which all the transmission signals and control signals between a modem device 3 and data terminal equipment 2 are outputted is provided at the modem 3 separately from a terminal for transmission between the device 3 and the equipment 2. Thereby, video observation can be immediately performed without stopping a system by connecting an on-line monitoring device 6 to the terminal 3c for on-line monitor connection while the system is being operated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a modem device for data transmission, and more particularly to a modem device having an online monitor connection terminal capable of monitoring a line without stopping the system during system operation.

[0002]

2. Description of the Related Art FIG. 5 is a system configuration diagram using a conventional modem device with an online monitor function disclosed in Japanese Utility Model Laid-Open No. 2-100372. In the figure, 1 is an exchange, 2
Is a data terminal device, 3 is a modem device, and this modem device 3 includes a modem main unit 31 and an online monitor function unit 3.
The online monitor function unit 32 has a video output terminal 3a and a floppy disk output terminal 3
b are connected to each other. Further, 4 is a video monitor device and 5 is a floppy disk device.

In the modem device with an online monitor function configured as described above, while the data transmission function is operating, the data terminal device 2 to the modem main body portion 31 of the modem device 3,
Data is exchanged with the exchange 1 via the online monitor function unit 32. Then, when monitoring is performed during operation in this system, the video monitor device 4 is connected to the video output terminal 3a connected to the online monitor function unit 32 to perform immediate observation. Further, in order to collect and record the monitor results, the floppy disk device 5 is connected to the floppy disk output terminal 3b connected to the online monitor function section 32 to collect the monitor results at the same time by the floppy disk and analyze them later. I am supposed to do it.

[0004]

By the way, the monitor function is originally used only when testing each data transmission device or performing a failure analysis when a transmission failure occurs. It is not used. Further, even if there are dozens of modems in the system, it is necessary to monitor at most two to three at the same time. Therefore, in the conventional modem device with an online monitor function, since the online monitor function is built in each modem device, a redundant circuit is provided during normal operation, and the price of the modem device itself is very expensive. There was a problem that it became a thing. This can be a major drawback when compared to a system that has a large system scale and includes dozens of modems without a monitor function and two or three dedicated monitor devices.

Further, when a simulation device is used in place of a partner device in a test of a data terminal device or the like, there is also a problem that the simulation device needs to be reconnected, like a modem device without a monitor function.

The present invention has been made in order to solve the above-mentioned problems, and does not have a built-in online monitor function in the modem device main body, and does not require connection change during system operation or test without changing connection data. An object is to provide an inexpensive modem device that can be monitored.

[0007]

In order to achieve the above object, the present invention provides a data transmission modem device for transmitting all transmission signals and control signals between the modem device and the data terminal device between the two devices. It is equipped with an online monitor connection terminal that outputs separately. Another aspect of the present invention is a board-type data transmission modem device, wherein all the transmission signals between the modem device and the data terminal device are provided on an extension board used to pull out the modem device from the crate at the time of testing. An online monitor connection terminal for outputting a control signal is provided.

Further, another invention of the present invention is, in the modem device having the online monitor connection terminal, disconnects all transmission signals between the data terminal device and the modem device, and connects the modem main body portion to the online monitor. The disconnection switch means is provided so that the transmission line can be connected only between the terminals.

[0009]

Therefore, in the present invention, all transmission signals and control signals between the modem device and the data terminal device are extracted from the terminals for online monitor connection for outputting separately from the transmission between the two devices, and the conventional monitor device is commonly used. By connecting, the transmission data can be monitored without incorporating the online monitor function in the modem device.

According to another aspect of the present invention, all transmission signals between the data terminal device and the modem device are cut off, and the transmission line is connected only between the main body of the modem device and the online monitor connection terminal. By providing the disconnecting switch means, the simulation can be performed only by connecting a generally known online monitor device to the online monitor connection terminal.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the drawings. First Embodiment FIG. 1 is a schematic diagram showing a system configuration of a modem device according to a first embodiment of the present invention. In the figure, the modem device 3
The modem main body 31 in the inside has an online monitor connection terminal 3 for transmitting all transmission signals and control signals to and from the data terminal device 2 separately from the transmission between the devices 2 and 3.
c is connected. Reference numeral 6 is an online monitor device connected to this terminal 3c. In the figure, the same or corresponding parts as in FIG. 5 are designated by the same reference numerals, and the description thereof will be omitted.

Next, the operation of the modem device of this embodiment will be described. For example, when the transmission signal is monitored during system operation, the online monitor device 6 is connected to the online monitor connection terminal 3c, and the online monitor device 6 is connected to the video device or the online monitor device 6 in the online monitor device 6. Using the external video monitor device 4, immediate observation is performed without stopping the system without changing the transmission path.

In order to collect and record the data at that time, a floppy disk device in the online monitor device 6 or a floppy disk device 5 connected to the online monitor device 6 is used to collect the above-mentioned monitor results in a floppy disk. And analyze later. As a result, it is possible to monitor the transmission data without changing the connection while the system is in operation without incorporating the online monitor function in the main body 31 of the modem device 3.

Embodiment 2 FIG. 2 is a schematic diagram showing a system configuration of a modem device according to a second embodiment of the present invention. In the figure, the modem device 3 is provided with an extension board 8 used for pulling out the modem device from the crate 7 at the time of a test, and the transmission data between the modem device 3 and the data terminal device 2 is extended board 8. It is supposed to be exchanged via. The extension board 8 has a connector 9 for connecting the modem device 3.
In addition, an online monitor connection terminal 3d for transmitting all transmission signals and control signals between the modem device 3 and the data terminal device 2 separately from the transmission between the devices 2 and 3 is connected. There is. In the figure, the same parts as those in FIG. 1 are designated by the same reference numerals, and the description thereof is omitted.

Next, the operation of the modem device of this embodiment will be described. For example, when the transmission signal is monitored during the test, the online monitor connection terminal 3d of the extension board 8 is used.
The online monitor device 6 is connected to, and the system is stopped by using the video device in the online monitor device 6 or the external video monitor device 4 connected to the online monitor device 6 without connecting the transmission path. Without immediate observation.

In order to collect and record the data at that time, a floppy disk device in the online monitor device 6 or a floppy disk device 5 connected to the online monitor device 6 is used to collect the above-mentioned monitor results in a floppy disk. And analyze later. As a result, it is possible to monitor the transmission data without changing the connection during the test without incorporating the online monitor function in the main body 31 of the modem device 3.

Third Embodiment FIG. 3 is a schematic diagram showing a system configuration of a modem device according to a third embodiment of the present invention. This embodiment differs from that shown in FIG. 1 in that all transmission signals between the modem device 3 and the data terminal device 2 are cut off, and the modem main body 3
That is, the disconnection switch 10 for connecting the transmission line with the data terminal device 2 between the terminal 1 and the online monitor connection terminal 3c is built in the modem device 3.

According to the modem device of this embodiment, for example,
When communicating with the data terminal device 2 by using the simulation device instead of the exchange in the test of the data terminal device 2, the simulation device is connected to the online monitor connection terminal 3c and the disconnection switch 10 is turned on (O.
By setting N), the modem device 3 and the data terminal device 1 are completely disconnected. Therefore, the simulation device and the data terminal device 2 can be connected without connecting cables or the like.
Communication is possible only between the two.

Further, most of the known online monitor devices also have a simulation function, and therefore, simply connecting the online monitor device 6 to the online monitor connection terminal 3c changes the connection of cables or the like. It becomes possible to easily select and use the line monitor and simulation without the need.

Fourth Embodiment FIG. 4 is a schematic diagram showing a system configuration of a modem device according to a fourth embodiment of the present invention. This embodiment is different from that of FIG. 2 in that all transmission signals between the modem device 3 and the data terminal device 2 are cut off, and the modem main body 3
That is, the disconnection switch 10 for connecting the transmission line to the data terminal device 2 between the terminal 1 and the online monitor connection terminal 3d is built in the extension board 8.

Therefore, even in the case of the embodiment of FIG. 4, the disconnection switch 10 is mounted on the extension board 8 and the simulation apparatus is connected to the online monitor connection terminal 3d of the extension board 8 to obtain the above-mentioned embodiment 3. The same effect can be obtained.

[0022]

As described above, according to the present invention, all transmission signals and control signals between the modem device and the data terminal device are output inside the modem device for data transmission separately from those for transmission between both devices. By providing the online monitor connection terminal, it is not necessary to incorporate an online monitor function inside the modem device, and therefore there is an effect that the line data can be monitored at a low cost and without affecting the system even during system operation.

Further, according to another invention of the present invention, in a board type data transmission modem device, all of the connection between the modem device and the data terminal device is provided inside an extension board used for pulling out the modem device from the crate during a test. Since an online monitor connection terminal for outputting the transmission signal and control signal is provided, there is an effect that the line data can be easily monitored even during the test without disconnecting the cable and reconnecting.

Further, according to another invention of the present invention, in the modem device, all transmission signals between the modem device and the data terminal device are cut off, and only the data is provided between the modem body and the online monitor connection terminal. Since the disconnection switch means for connecting the transmission line to the terminal device is provided, in the case of a normal online monitor device having both a simulation function and a monitor function, just connect this online monitor device to the online monitor connection terminal, It is possible to easily select and use the line monitor and simulation without reconnecting cables and the like, which has the excellent effect of improving the efficiency of the test.

[Brief description of drawings]

FIG. 1 is a system configuration diagram of a modem device according to a first embodiment of the present invention.

FIG. 2 is a system configuration diagram of a board type transmission modem device according to a second embodiment of the present invention.

FIG. 3 is a system configuration diagram of a modem device according to a third embodiment of the present invention.

FIG. 4 is a system configuration diagram of a board type transmission modem device according to a fourth embodiment of the present invention.

FIG. 5 is a system configuration diagram of a conventional modem device with an online monitor function.

[Explanation of symbols]

 1 Switch 2 Data Terminal 3 Modem 4 Video Monitor 5 Floppy Disk 6 Online Monitor 7 Crate 8 Extension Board 9 Connector 10 Disconnect Switch

Claims (3)

[Claims] 1. A modem device for data transmission, comprising an online monitor connection terminal for outputting all transmission signals and control signals between the modem device and the data terminal device separately from those for transmission between both devices. Characteristic modem device. 2. A circuit board type data transmission modem device outputs all transmission signals and control signals between the modem device and the data terminal device to an extension board used for pulling out the modem device from the crate during a test. A modem device having an online monitor connection terminal. 3. A modem device having an online monitor connection terminal according to claim 1 or 2, wherein all transmission signals between the data terminal device and the monitor device are cut off to connect the modem main body part to the online monitor. A modem device comprising disconnecting switch means capable of connecting a transmission line only between terminals.