JPH04361457A - Line state monitor system - Google Patents

Abstract

PURPOSE:To devise the system such that a digit number carry excess detection bit has only to be checked for the alarm output in the audit processing, data for plural lines are extracted at once by a high speed processor for the audit processing, the addition processing time to a counter table is less, the line detection for an erroneous holding is executed at a high speed and the processing time is reduced. CONSTITUTION:When a line operating state bit A for each line in a resource state management table 10 is added and recorded to a count table B of an alarm detection management table 20 as a numeral 1 while the line holding is kept, the digit number is increased by the count table B and when a digit number excess check bit C at a maximum digit reaches a numeral 1, it is detected and outputted as an alarm. When an alarm detection limit D us preset, the initial value I of the count table B is a value in which the digit number excess check bit C=1 when the sum added by the alarm detection limit D is exceeded. An alarm is raised by a numeral C=1.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention is a method for realizing a periodic execution program in electronic devices such as electronic exchanges and transmission devices, and is a method for monitoring line status for monitoring abnormal hold of terminals or lines, especially for multiple lines. The usage status is checked at a predetermined period from the resource status management table that stores the usage status of each line, and when the usage status is continuously counted and exceeds a predetermined alarm detection limit value, an abnormality pending alarm is issued. This invention relates to a line status monitoring method that outputs.

0002

[Prior Art] Monitors the usage status of lines (or terminals) connected to communication equipment, and monitors the usage status of lines (or terminals) connected to communication equipment, and monitors the status of lines (or terminals) connected to communication equipment, such as when a line remains in use even though it is not in use due to a hardware failure or software bug. This condition is called a floating line. One of the purposes of switching equipment, transmission equipment, etc. is to increase the data rate of lines, and floating lines need to be prevented because they occupy line resources ineffectively and reduce the actual operating rate of the system. It is.

[0003] Audit processing by a program that detects this floating line and notifies the maintenance personnel is performed when the line is free,
The resource management program that manages the in-use period periodically searches for lines that are in use as line resources, and issues an alert to the maintenance personnel if the in-use state continues for longer than the system-defined usage time. emanates from.

[0004] This type of conventional line status monitoring system uses a counter for each line, and increments the count of lines that are still in use during each cycle of processing until the count reaches a certain value. At times, the process was to issue an alarm.

[0005] This will be explained with reference to FIG. FIG. 3 is a block diagram showing an example of the conventional technology.

As shown in the figure, resource status management table 1
0 has a line status display section 11 for each line, and this line status display section 11 has a line use status bit 12 indicating with a binary code 1 that the line is in use.

The adder 30 adds the value A of the line usage status bit 12 of the resource status management table 10 and the value B of the count table 51 for each line, and writes the result to the count table 51.

The count table 51 is included in the alarm detection management table 50 for each line.

The alarm detection limit value 60 stores a numerical value D at which the binary code 1 of the line usage status bit 12 is continuously counted for a predetermined time for each line at a predetermined period.

The comparator 70 outputs an alarm when the count value B of the count table 51 reaches the recorded value D of the alarm detection limit value 40.

The illustrated example is processing at line number N,
The line is processed sequentially for all numbers.

0012

[Problems to be Solved by the Invention] The above-mentioned conventional line status monitoring system compares the alarm detection limit value for each line to determine whether the added count value has reached a certain value or more. As the number increases, there is a problem in that adding up the count for each line and comparing it with a constant value consumes a large amount of processing power of the processor.

SUMMARY OF THE INVENTION An object of the present invention is to provide a line condition monitoring system that solves the above-mentioned problems by detecting the excess of the alarm detection limit value using the count value itself of the count table and eliminating the need for a comparison procedure. It is in.

[0014]

[Means for Solving the Problems] The line status monitoring method according to the present invention checks the usage status of multiple lines at predetermined intervals from a resource status management table that stores the usage status of each line. In a line condition monitoring system that outputs an abnormality pending alarm when a predetermined alarm detection limit value is exceeded by continuous counting, the number of digits is increased and a digit excess detection bit is generated when the alarm detection limit value is exceeded. A table is provided, and an audit process is executed to issue an alarm and output the generated digit excess detection bit.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be explained with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the line status monitoring method of the present invention.

In FIG. 1, the same components as shown in FIG. 3 described above are given the same numbers and symbols, and their explanations will be omitted.

FIG. 1 differs from FIG. 3 in the contents of the alarm detection management table 20 and alarm detection limit value 40, and the comparison section has been deleted from FIG.

The processor used in FIG. 1 uses a 32-bit processor, and the alarm detection limit value 40 is 7 in binary code.
It is within the cycle of the numerical value (128-1=)127 in bits. Therefore, the 32-bit processor can process four lines of 8-bit management data at once through addition processing.

As mentioned above, the resource status management table 10 is a table that manages the status of in use and free for each line, and the line usage status bit 1 corresponding to line number N is
It has a numerical value A of 2. This numerical value A takes a value of 0 when the line is idle and a value of 1 when the line is in use.

The alarm detection management table 20 contains a count table for detecting the alarm detection limit value D for each line. The count table 22 of the line number N is indexed by the line number N from the alarm detection management table 20, and the count table 22 of the line number N can be indexed. The count table 22 for line number N is 8-bit data, with the most significant 1
The bit is referred to as the digit number excess detection bit 23, and is composed of this numerical value C and the count value B of the remaining lower 7 bits.

The adder 30 adds the numerical value A to the numerical value B using a predetermined periodic pulse and stores the resultant value as the numerical value B in the counting table 22.

The numerical value B of the counting table 22 is set as an initial value by subtracting the numerical value D of the preset alarm detection limit value 40 from the 7-bit numerical value 128. Therefore, the numerical value B exceeds 7 bits when the numerical value D is counted by the periodic pulse, and the 8th bit numerical value C becomes the numerical value 1.

For example, when the line with line number N is acquired, the value A of the line usage status bit 12 of line N is set to free (((
The setting is changed from value 0) to in use (value 1), and the count counter value B of the count table 22 of line number N is set to 7-bit value 27 = 128 minus the value D of alarm detection limit value 40 B = 128- Set to D, excess number of digits detection bit 23
The numerical value C of is set to zero and the capture process is ended.

[0024] The audit process executed periodically is as follows:
In order to count all the lines in the resource status management table 10, the line status display section 11 is extracted from the resource management status table 10, and only the numerical value A of the line usage status bit 12 is extracted from the data in this display section 11. Arithmetic addition is performed between the extracted numerical value A and the numerical value B in the counting table 22 of the corresponding line number N in the alarm detection management table 20, and the calculation result is set as the numerical value B in the counting table 22.

When the numerical value B as a result of this arithmetic addition is less than the 7-bit numerical value 128, since the line has not reached the alarm detection period, overflow does not occur in the digit excess detection bit 23, and the numerical value C= It remains 0. On the other hand, when the numerical value C of the digit excess detection bit 23 on the line to which the periodic count of the numerical value D of the alarm detection limit value 40 is added causes overflow as a result of arithmetic addition of the count table 22 and becomes the numerical value C=1. A line alarm is detected. Therefore, in the audit process, the occurrence of a faulty line can be known by checking only this digit number excess detection bit 23.

[0026] Since the above calculations are composed of simple arithmetic calculations and logical operations, almost no processing as a program is required. Furthermore, in this embodiment, one calculation can be executed simultaneously on four lines using a 32-bit processor, so that processing time can be reduced and processing can be executed at high speed.

Furthermore, by changing the numerical value D of the alarm detection limit value 23, the period count value until detection can be easily changed.

Next, the main operating procedure will be explained with reference to FIG. 2 and FIG. 1. FIG. 2 is a flow diagram showing an example of the operating procedure of FIG.

[0029] When the predetermined period arrives, first, the first line,
Check the line usage status bit value A of line number 1 (101)
do. Next, the count table value B of the same line number 0 is investigated (102), the adder 30 calculates the value (A+B), and the calculation result is stored in the count table 22 as the value B (102).
03) Do.

The processor (not shown) examines the bit value C that exceeds the number of digits (104), and outputs a warning (105) when a binary code 1 indicating an excess number of digits is set.

If the investigation (106) for all lines has not yet been completed, the next line number's use state bit value A is investigated (107) and the process is connected to step 102.

[0032] When the numerical value C=0 in step 104, step 10
Proceed to step 6, and when the investigation of all lines is completed in step 106,
The entire investigation is complete.

[0033]

[Effects of the Invention] As explained above, in the line status monitoring system of the present invention, when the number of digits reaches the maximum digit position in the count table for each line of the alarm detection management table, it is displayed as a digit excess detection bit. , the configuration is such that it is output as an alarm, so in order to output an alarm during audit processing, it is only necessary to check the digit excess detection bit, and multiple lines can be extracted at once and audited using a high-speed processor. Therefore, the processing time for addition to the count table is shortened, and therefore, there is an effect that detection of an abnormally held line can be executed at high speed, and the processing time of the processor can be reduced.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of a management table showing an embodiment of the line status monitoring method of the present invention.

FIG. 2 is a flow diagram illustrating an example of the main operation procedure of FIG. 1;

FIG. 3 is a configuration diagram of a management table showing a conventional example.

[Explanation of symbols]

10 Resource status management table 11 Line status display section 12 Line usage status bit 20 Alarm detection management table 22 Counting table 23 Excess digit detection bit 30 Adder 40 Alarm detection limit value

Claims (1)

[Claims] [Claim 1] Check the usage status at a predetermined period from a resource status management table that stores the usage status of each line for multiple lines, and continuously count the usage status to determine whether a predetermined alarm detection limit value has been exceeded. In a line condition monitoring system that outputs an abnormality pending alarm when the alarm detection limit value is exceeded, a count table is provided that increases the number of digits and generates a digit excess detection bit, and the generated digit excess detection bit is A line status monitoring method characterized by executing an audit process that generates an alarm and outputs it.