JPH0531982B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a priority processing control system that selectively processes and controls one of the calling lines that originate from a plurality of lines.

[Conventional technology]

The conventional priority processing control method uses a current table that temporarily stores the calling status of all connected lines for each line, and detects the calling status in this current table and selects and processes one of the calling lines. In addition, when an overload is measured, the central control unit has a processing restriction means that blocks the line according to the degree of overload and notifies the call status in the current table. The control device has it. That is, according to the level of the load measurement result, the processing restriction means of the central control unit directly controls the line circuit that connects the line and monitors the line status, and limits the sending of calling signals from the line. There is.

[Problem that the invention seeks to solve]

As mentioned above, in the conventional priority processing control method, the central control unit, which selectively processes and controls the calling lines one by one, directly controls the restriction of sending out calling signals from the calling lines according to the degree of overload of the central control unit. Therefore, a problem arises in that a priority processing designation program for actively executing this restriction control and a load for executing this program are required, and the load increases as the degree of overload increases.

An object of the present invention is to provide a priority processing control system that solves the above problems.

[Means for solving problems]

In addition to the current status table (line call status temporary storage device) that temporarily stores the call status of the line, the priority processing control method according to the present invention provides a process limit for line process selection (line blockage) that is established for each degree of overload. ) has a priority processing table (processing limit designation storage device) in which is specified in advance, and a central control unit that sequentially selects and processes calling lines selects one priority processing table according to the degree of overload of selection processing control. table selection means for comparing the selected priority processing table with the current status table and selecting only one calling line for which no processing restriction is specified; and connection control means for processing.

[Embodiment] Next, a priority processing control system of the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention. In FIG. 1, a line 1 connects a communication path to a main switch 2 via a line circuit 101 of a line package 10, and also connects a signal path to a central control unit 3.
Connect to. The central control unit 3 controls the main switch 2 by making full use of the programs and data stored in the main memory 4 in accordance with the information received from the line 1, and processes the exchange connection between the lines. The current status table 5 is a temporary storage device for the line calling status that temporarily stores the calling status of the line, and is recorded when the calling status via the line circuit 101 is detected for each line 1. The priority processing table 6 is a processing limit specification storage device for controlling and specifying the processing of the calling line, and the higher the operating rate and the larger the load of the central control unit 3, the more the limit specification is increased.The priority processing table A for each degree of overload is , B, . . . , M, and the control designation for each line 1 is recorded in advance in each table.

The central control device 3 has a connection control means 31, a load measurement means 32, a table indexing means 33, and a collation selection means 34 in FIG. Connection control means 31
receives the information of the calling line 1 and controls the connection processing of the main switch 2. The load measuring means 32 checks the operating rate of the connection control means 31, measures the load, and outputs a predetermined signal for each load degree. Table index means 33
indexes one of the plurality of priority processing tables A, B, . . . , M according to the output designation of the load measuring means 32. The collation selection means 34 includes an indexed priority processing table,
For example, the calling line in the current table 5 is checked against the processing restriction designation information for each line in the priority processing table B, and only the calling line with no processing restriction designation is selected and the information on the calling line is output to the connection control means 31. do.

Next, with reference to FIG. 2, specific examples of the current status table and priority processing table shown in FIG. 1, as well as the collation and selection means will be described. FIG. 2 is a functional block diagram showing an embodiment of the partial details of FIG. 1. In FIG. 2, the same components as those in FIG. 1 are given the same numbers and symbols, and a detailed explanation thereof will be omitted. Current status table 5 shows that when a calling signal is received from the line circuit 101 from line number 1 to line number n, code 1 is entered in the corresponding line number area.
and memorize it. In Figure 2, line numbers 1, 2,
3 has the code 1, indicating that a call has been made. The priority processing table 6 has priority processing tables A, B, ..., M, and each priority processing table has a line number area from line number 1 to line number n in correspondence with the current table 5, and In the number area, a code 0 is stored when processing restrictions are designated, and a code 1 is stored when no restrictions are designated. Since priority processing table A in FIG. 2 has the code 1 in all line number areas, call processing is possible for all lines. Priority processing table B is line number 1,
3, the area n is code 1, and the priority processing table M
Only the areas with line numbers 1 and n are coded 1.

In FIG. 2, when the load measuring means 32 of the central control device 3 outputs a signal of a moderate load, the table indexing means 33 indexes the priority processing table A, and when it outputs a signal of heavy load, the table indexing means 33 indexes the priority processing table M. It is indexed and output to the collation selection means 34. The collation selection means 34 is an AND circuit that inputs both one of the priority processing tables 6 indexed by the table indexing means 33 and the current state table 5. For example, when the priority processing table A is inputted from the table indexing means 33, the current state Since the codes of Table 5 and each line number area are ANDed, when the code 1 appears in the number area of all calling lines in current table 5, it is output to the connection control means 31. Therefore, when priority processing table A is selected as an index, all lines are processed for calling. Further, when priority processing table B is input, only line numbers 1 and 3, both of which are stored with code 1 in FIG. 2, are output to connection control means 31. Therefore, when priority processing table B is selected, line number 2
Calls from the line circuit 101 are regulated by the processing control designation and are not processed. Similarly, when the priority processing table M is indexed, only the line number 101 of line numbers 1 and n is called.

Although the above embodiment has been explained as a call originating from a communication line, since the central control unit is activated by the incoming call also for the incoming call line that receives the call via the communication line, the call is prioritized and controlled as an originating call. Can be controlled. Further, even when the call is started from multiple computer terminals, it is regarded as a call originating from the computer terminal, and the central processing unit of the computer can execute priority processing control as in this embodiment.

〔Effect of the invention〕

The priority processing control method of the present invention has a priority processing table in which call processing restrictions are specified for each degree of overload of the central control unit, in addition to a current table that records the calling status of the line. By regulating call acceptance by comparing the current status table with one priority processing table according to the degree of overload, there is no need for a priority processing designation program that is actively executed by the central control unit. This has the effect of reducing processing, reducing the load, and increasing the processing capacity of the central control unit.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the priority processing control system of the present invention, and FIG. 2 is a functional block diagram showing a detailed example of a portion of FIG. 1...Line, 2...Main switch, 3...Central control unit, 5...Current status table, 6...Priority processing table, 31
... Connection control means, 32 ... Load processing means, 33
. . . table indexing means, 34 . . . collation selection means.

Claims (1)

[Claims] 1 In a priority processing control method that selectively processes and controls one of the calling lines that originate from multiple lines,
A current table that temporarily stores the calling status of all connected lines for each line, and a control that sequentially selects and processes lines is overloaded. Processing limits for line selection are specified in advance according to the degree of overload. It measures its own load, selects one of the priority processing tables according to the degree of overload, and limits processing while comparing the selected one priority processing table with the current table. A priority processing control system comprising: a central control unit that selects and prioritizes each undesignated calling line one by one.