JPH01103061A - Signal link error rate monitor system - Google Patents

Abstract

PURPOSE:To set an error rate reference value in response to the state of a network by setting freely the error rate reference value for discriminating the normality in response to the external command. CONSTITUTION:A central processing unit 3 monitors periodically the state of a switch means 2 for setting error rate reference value, stores the error rate reference value corresponding to a switch number read from the error rate reference value table in the storage device 4 to an error rate reference value memory in the storage device 4 and sets it for each occasion. Then the state of the memory means 2 is subject to switch control externally in response to the line state, since the error rate reference value is revised accordingly, the line operation is smoothed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a signal link error rate monitoring system, and particularly to a signal for determining the normality of a common line signal link in a common line signaling system used in a program storage type electronic exchange. Related to link error rate monitoring method.

In this type of conventional signal link error rate monitoring system, the error rate reference value for determining normality is fixed at a predetermined constant value.

In this way, in the conventional system, since the error rate reference value serving as the determination criterion is a fixed constant value, the normality of the common line signal link can only be determined based on the fixed standard. For this reason, it is not possible to adjust the error rate reference value according to the various conditions of networks connected by the common line signaling method, and as a result, abnormalities in the common line signaling link are overdetected, resulting in line failure. It has the disadvantage of interfering with operation.

1 ■ Momme ■ Failure Therefore, the present invention was made to solve the drawbacks of the conventional ones, and its purpose is to provide a signal link error rate monitor that can set an error rate reference value according to the network condition. The goal is to provide a method.

■tW feeling According to the present invention, there is provided a signal link error rate monitoring method for determining the normality of a common signal link in a common signaling system used in an electronic exchange, and an error $ standard for determining the normality. A signal link error rate monitoring method is obtained, which is characterized in that values can be freely set according to external instructions.

Example The present invention will be described in detail below using the drawings.

FIG. 1 is a block diagram of an embodiment of the invention.

In the figure, a common line signal circuit 1 according to an embodiment of the present invention has a function at the data link control level of the common line signaling system, and has the following configuration. It consists of a switch means 2 that can arbitrarily select and set an error rate reference value, a central control unit 3, a data recording device 4, and a line interface 5. interface is possible.

When the common line signal circuit 1 receives a signal from the common line signal link 6, this received signal is introduced to the central control unit 3 via the line interface 5. In this central control device 3, the normality of the received signal is determined by a well-known method.

As a result of this determination, if there is no error, the error counter section 7 (see FIG. 2) provided in the storage device 4 is subtracted. If an error is detected in the received signal, addition is performed in the error counter section 7;
The value is compared with the error rate reference value stored in the error rate reference value memory section 8 (FIG. 2). At this time, if the value of the error counter unit 7 exceeds the error rate reference value, it is determined that there are too many errors.

Here, the central control III device 3 is in the state of the switch means 2 for setting the error rate reference value! ! ! (For example, as shown in Figure 3,
The status of numbers 110 II to "F" is periodically monitored according to the on/off status of the switch, and each time the switch number is read from the error rate reference value table 9 (FIG. 2) in the storage device 4. The error rate reference value corresponding to the error rate reference value is stored and set in the error rate reference value memory section 8 in the storage device 4. Every time the state of the switch means 2 is changed, the corresponding error rate reference value is read out from the table 9 and stored in the memory section 8.
It is stored in . Therefore, if the state of the memory means 2 is switched and controlled from the outside in accordance with the line state, the error rate reference value is changed accordingly, so that the line can be operated smoothly.

Incidentally, FIG. 3 shows an example of the state number of the switch means 2 and the error rate reference value, and the numbers in the right column are for the common signal line link 6.
This is the initial setting value, and the middle column is the value during normal operation.

Effects of the Invention As described above, according to the present invention, since the criterion value for monitoring the error rate of the signal link can be changed as desired by the switch means, the common line can be switched without causing any trouble to the operation of the line. This has the effect that it is possible to set the most suitable error rate reference value according to the form of the network connected by the signaling system.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is a diagram showing the inside of the storage device shown in FIG. 1, and FIG. 3 is a table showing an example of switch numbers and error rate reference values. Explanation of symbols of main parts 2...Switch means 3...Central control device 4...Storage device 6...Common line signal link 7... Error counter section 8 Error rate reference value memory section 9 Error rate reference value table

Claims (1)

[Claims] A signal link error rate monitoring method for determining the normality of a common signal link in a common signaling system used in electronic exchanges, wherein the error rate reference value for determining the normality can be freely set according to external instructions. A signal link error rate monitoring method characterized in that it is configured as follows.