JPH04349733A - Test method at extension of communication terminal station equipmetn - Google Patents

Abstract

PURPOSE:To improve the reliability of a test at the extension of a communication terminal station equipment by conducting the test of transmission/reception of state information and a control signal even between a simulator and an information collection controller. CONSTITUTION:While a monitor control communication line 11 is connected to a communication terminal station equipment 5 at the extension of the communication terminal station equipment 5 to bring the state not giving the effect onto other communication terminal station equipment, and state information representing a fault is sent to an information collection controller 10. Then a control signal representing not giving any effect onto other communication terminal station equipment is sent from the controller 10 to the equipment 5 to conduct the test of transmission/reception of state information and control signal representing giving no effect onto the other communication terminal station equipment. Then a simulator 12 is connected to the signal line 11 to allow the simulator 12 to generate state information representing a fault giving effect onto other terminal station equipment and to send it to the controller 10, and the controller 10 sends a control signal giving effect onto the other communication terminal station equipment, the control signal is displayed on the simulator 12 to conduct the test of transmission/reception of the state information and the control signal giving effect onto the other communication terminal station equipment.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention provides a loop between a plurality of communication terminal devices and an information collection control device for transmitting control signals and collecting status information of the plurality of communication terminal devices using a supervisory control signal line. The present invention relates to a test method when adding a communication terminal device to a loop network system connected in the same manner.

0002

2. Description of the Related Art FIG. 4 is a block diagram of a conventional loop network system, FIG. 5 is a diagram showing an example of a control signal frame and a supervisory signal frame, and FIG. 6 is a block diagram of essential parts of an example of a node. .

FIG. 4 shows a case where a communication terminal device 5 is added, and the communication terminal devices 1 to 4 and the added communication terminal device 5 cross-connect the working and standby multiplexing units and lines. It has a cross-connect section, a branch/insertion section for inputting signals to its own communication terminal device, and branching signals at its own communication terminal device, etc., and are connected to each other by a communication path.

[0004] Nodes 1-1 to 5- are connected between the information collection control device 10, which transmits control signals and collects status information of each communication terminal device, and the communication terminal devices 1 to 4 and the additional communication terminal device 5. 1 through a supervisory control signal line 11, and the looped supervisory control signal line 11 carries status information sent from each communication terminal device 1 to 5 to the information collection control device 10. A monitoring signal frame shown in FIG. 5 and a control signal frame shown in FIG. 5 carrying control signals sent from the information collection control device 10 to each communication terminal device 1 to 5 flow.

[0005] The loop consists of a clockwise loop for current use and a counterclockwise loop for backup, so that a loopback can be performed in the event of a failure in the communication terminal equipment. As shown in (A) and (B) of FIG. 5, the control signal frame and the supervisory signal frame include a frame pattern area, an error check information area, and each communication terminal device 1 to 5 assigned to each communication terminal device 1 to 5. It consists of a control signal area to 5 or a monitoring signal area of each communication terminal device 1 to 5.

Further, as shown in FIG. 6, each of the nodes 1-1 to 5-1 has a writing unit that writes status information indicating an abnormality of the communication terminal device into an area assigned to the communication terminal device of the monitoring signal frame. 20, a reader 21 which reads a control signal from an area assigned to the communication terminal device of the control signal frame and sends it to the communication terminal device, and switches SW1 and SW2 which are set to the dotted line side for loopback. There is.

[0007] Status information indicating an abnormality such as a power outage, a communication path disconnection, or a drop in the level of a communication signal of the communication terminal devices 1 to 5 is sent to the information collection control via a supervisory signal frame on the supervisory control signal line 11. The data is sent to the device 10 and displayed on the display section 10-1.

[0008] Control signals from the information collection control device 10 for switching between the active and standby multiplexing sections of the communication terminal devices 1 to 5, switching the line connections of the cross-connect sections, etc. are transmitted on the supervisory control signal line 11. It is sent to each communication terminal device 1 to 5 via a control signal frame.

When the communication terminal device 5 is added, in order to operate as described above, an abnormal state is generated in the added communication terminal device 5, and status information indicating this abnormal state is sent to the information collection control device 10. Information collection control device 1
It is necessary to send a control signal from 0 to the communication terminal device 5 to test whether it operates normally.

0010

[Problems to be Solved by the Invention] However, in some tests that generate an abnormal state and send status information indicating the abnormal state, for example, when a communication path is disconnected, there are cases where other communication terminal equipment is affected. In some cases, the information collection control device 1
Some of the tests in which control signals are sent from 0 have an effect on other communication terminal equipment, such as control signals that change the connection of lines in the cross-connect section, and such tests cannot be performed. There is a problem in that the reliability of the test when the communication terminal equipment 5 is added is reduced.

An object of the present invention is to provide a test method when adding communication terminal equipment, which can improve the reliability of testing when adding communication terminal equipment.

0012

[Means for Solving the Problems] FIG. 1 is a block diagram of the principle of the present invention. As shown in FIG. 1, a plurality of communication terminal devices 1 and 2 are connected to each other through a communication path, and information collection is performed to transmit control signals and collect status information of the plurality of communication terminal devices 1 and 2. The control device 10 is connected in a loop by a supervisory control signal line 11, and the plurality of communication terminal devices 1 and 2 write status information at a predetermined position of a supervisory signal frame on the supervisory control signal line 11, Furthermore, when adding a communication terminal device 5 to a loop network system that reads a control signal from a predetermined position of a control signal frame, the communication terminal device 5, the supervisory signal frame, and the control signal frame are A pseudo device 12 capable of writing and reading status information to the position assigned to the additional communication terminal device 5 is added so that it can be switched and connected to the supervisory control signal line 11, and the pseudo device 12 and the corresponding It is possible to test the exchange of status information and control signals even between information collection control devices 10.

[0013]

[Operation] According to the present invention, when the communication terminal equipment 5 is added, an abnormal state is recognized as an abnormal state that does not affect other communication terminal equipment while the supervisory control signal line 11 is connected to the communication terminal equipment 5. By transmitting the status information shown to the information collection control device 10 and transmitting a control signal that does not affect other communication terminal devices from the information collection control device 10 to the communication terminal device 5, other communication terminal devices can be controlled. Test the exchange of status information and control signals that do not affect the device, then connect the pseudo device 12 to the supervisory control signal line 11, and use the pseudo device 12 to detect abnormalities that affect other communication terminal devices. generates status information shown and transmits it to the information collection control device 10, and also transmits a control signal that affects other communication terminal devices from the information collection control device 10,
By displaying this control signal on the pseudo device 12, the exchange of status information and control signals that affect other communication terminal devices is tested.

[0014] In this way, the reliability of the test when the communication terminal equipment 5 is added can be improved.

[0015]

Embodiment FIG. 2 is a block diagram of a loop network system according to an embodiment of the present invention, and FIG. 3 is a block diagram of main parts of a pseudo device according to an embodiment of the present invention.

FIG. 2 shows a case where communication terminal equipment 5 is added. The difference from the conventional example shown in FIG. Further, switches SW3 to SW6 are provided on the supervisory control signal line 11,
The point is that the supervisory control signal line 11 can be switched and connected from the node 5-1 to the node 12-2 of the pseudo device 12 using the switches SW3 to SW6.

The pseudo device 12 is constructed as shown in FIG.
The node 12-2 has the same configuration as the nodes 1-1 to 5-1, and the writing section 20 and reading section 21 are connected to a personal computer 12-1 having a keyboard and a display section.

When the communication terminal device 5 is added, the switches SW3 to SW6 are set to the solid line side, the communication terminal device 5 and the supervisory control signal line 11 are connected via the node 5-1, and other communication terminals are connected. The information collection control device 10 causes an abnormality that does not affect the station equipment, and places the abnormality information on the position assigned to the communication terminal device 5 of the supervisory signal frame on the supervisory control signal line 11.
The signal is sent to the display unit 10-1 and checked to see if it is a predetermined abnormal signal.

The information collection control device 10 also controls the monitoring control signal line 11 by controlling the control signals that do not affect other communication terminal devices, such as switching the multiplexing section of the communication terminal device 5 from active to standby. The signal frame is placed in the position assigned to the communication terminal device 5 and transmitted, and it is checked whether the current use has been switched to the standby.

Next, switches SW3 to SW6 are switched to the dotted line side, and the supervisory control signal line 11 is connected to the node 12 of the pseudo device 12.
-2, and sends abnormality information, for example, in the case of communication path disconnection, from the keyboard of the personal computer 12-1, and sends the monitoring signal frame to the communication terminal device 5 via the writing unit 20 of the node 12-2.
The write information collection control device 10 sends the information to the position assigned to and displays it on the display section 10-1 to see if it is an abnormal signal of communication path disconnection.

Furthermore, the information collection control device 10 transmits a control signal for switching the cross-connect section of the communication terminal device 5 to the communication terminal device 5 in the control signal frame on the supervisory control signal line 11.
In the pseudo device 12, the reading section 21 of the node 12-2 reads the signal and displays it on the display section of the personal computer 12-1 to see if it is a control signal for switching the cross-connect section.

[0022] In this way, when the communication terminal device 5 is added, abnormal state signals and control signals that do not affect other communication terminal devices can be exchanged between the communication terminal device 5 and the information collection control device 10. The exchange of abnormal status signals and control signals that occur between the terminals and that affect other communication terminal devices is a pseudo signal that can be written or read in the position assigned to the additional communication terminal device 5 in the monitoring signal frame and control signal frame. device 12
and the information collection control device 10, and the reliability of the test when adding the communication terminal device 5 can be improved.

[0023]

As explained in detail above, according to the present invention, the reliability of the test of the exchange of abnormal state signals and control signals with the information collection control device when adding communication terminal equipment can be improved. There is.

[Brief explanation of drawings]

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

FIG. 2 is a block diagram of a loop network system according to an embodiment of the present invention;

FIG. 3 is a block diagram of main parts of a pseudo device according to an embodiment of the present invention;

FIG. 4 is a block diagram of a conventional loop network system.

FIG. 5 is a diagram showing an example of a control signal frame and a supervisory signal frame;

FIG. 6 is a block diagram of essential parts of an example node.

[Explanation of symbols]

1 to 5 are communication terminal equipment, 1-1 to 5-1, 12-2 are nodes, 10 is an information collection control device; 11 is a supervisory control signal line; 12 is a pseudo device; 12-1 is a personal computer, 20 is a writing section; 21 is a writing section; SW1 to SW6 indicate switches.

Claims (1)

[Claims] Claim 1: A plurality of communication terminal devices (1, 2) connected to each other via a communication path, and a plurality of communication terminal devices (1, 2) connected to each other via a communication path.
, 2), an information collection control device (10) that sends control signals and collects status information is connected in a loop with a supervisory control signal line (11), and the plurality of communication terminal devices (1, 2) )
The communication terminal equipment (5) is connected to a loop network system that writes status information to a predetermined position of the supervisory signal frame on the supervisory control signal line (11) and reads a control signal from a predetermined position of the control signal frame. ), when adding
A pseudo device capable of writing and reading status information into the expansion communication terminal device (5), the monitoring signal frame, and the control signal frame assigned to the expansion communication terminal device (5). 12) to the supervisory control signal line (11) so that it can be switched and connected to the pseudo device (12).
1. A test method when adding a communication terminal device, characterized in that the exchange of status information and control signals can be tested between the information collection control device (10) and the information collection control device (10).