JPH01297996A - Exchange control system - Google Patents

Abstract

PURPOSE:To efficiently execute an event processing by multiplexing a main switch control task of a main processor part. CONSTITUTION:When a local processor part 12 is started, a processor part 12 executes a terminal control task 51. Subsequently, when an event of calling is discriminated, this event A is transmitted to a main processor part 13, the processor part 13 starts a main switched control task 52, and executes a program A. When an inquiry A is executed to a task 51, based on the program A, the main switch control task A saves executing information in a task control information storage area 54 and suspends it. When a task 51 or an event B is generated during this time, this event B is transmitted to the processor part 13, the main switch control task 52 is started newly within a range of multiplicity (n), and a program B is executed. When a reply event to the inquiry A is generated from the task 51, the processor part 13 reads out task information and restarts the task A.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an exchange control system, and in particular, a system that controls the main switch of an exchange to process a plurality of events from a local processor unit that performs terminal-dependent processing. The present invention relates to a multiprocessor exchange control method performed in a main processor unit that performs call control processing of a terminal.

[Conventional technology]

FIG. 3 is a block diagram showing an example of a conventional exchange control system.

As shown in FIG. 3, in the conventional exchange control system, a local processor section 12 that performs terminal-dependent processing, and a main switch 4 that accommodates lines connecting a plurality of terminals 61 and 62 are used.
The exchange control program is divided into a main processor section 13 that controls the terminal and performs call control processing of the terminal, and a terminal control program 71 that performs processing of the local processor section 12 and a main switch control program 72 that performs processing of the main processor section 13. Each was executed as one task.

[Problem to be solved by the invention]

In the conventional exchange control method described above, the terminal control program that processes the local processor section and the main switch control program that processes the main processor section are each executed as one task. During communication, when the main processor section sends an inquiry to the local processor section, the main processor section waits for a reply from the local processor section, and during this period, even if a new event occurs, the main processor section does not process it. The drawback is that it cannot be done.

[Means to solve the problem]

The switching control system of the present invention is a multi-processor switching control system that includes a main processor section that controls the main switch and performs call control processing, and a local processor section that analyzes events from terminals and controls the terminals. The present invention is characterized by comprising a control means that multiplexes the tasks of the main processor section activated when an event occurs from the terminal, and causes the main processor section to process a plurality of events from the local processor section in parallel.

〔Example〕 Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the switching control system of the present invention, and FIG. 2 is a diagram showing the state transition of call processing according to the present invention.

In FIG. 1, the central control device 1 is a device block consisting of an event monitoring section 11 that executes event monitoring, a local processor section 12 that controls terminals, and a main processor section 13 that controls the main switch 4. 51,n multiplexed main switch control task 52 and common data 53 are used to control the line circuit 2, line switch 3, and main switch 4, respectively, to perform line interconnection processing. Terminal 61.

62 is accommodated in the line switch 3 via the line circuit 2. The task control information storage area 54 in the storage device 5 is an information storage area for the multiplicity n of the main switch control tasks 52.

Next, the exchange control operation of the main processor section when the local processor section detects an event will be explained with reference to FIGS. 1 and 2.

For example, the event monitoring unit 11 of the central control device 1 receives an event (event A) of a call originating from the terminal 61 via the line circuit 2.
), the local processor unit 12 is activated. The local processor unit 12 executes a terminal control task 51, and the terminal control task 51 analyzes events. When the calling event is identified, this event A is sent to the main processor unit 13, and the main processor unit 13 starts the main switch control task 52 (main switch control task A in FIG. 2) and programs the event corresponding to the event. (Program A in Figure 2) is executed. When an inquiry is made to the terminal control task 5 based on the program A (inquiry A in Fig. 2), the main switch control task A sends the task execution information to the task control information storage area 5.
4 and interrupt 7 During this time, a new event (second
When event B) in the figure occurs, these events 1 to [] are sent to the main processor unit] 3, and a new main switch control task 52 (main switch control task B in Figure 2) is created within the range of multiplicity n. and execute the program corresponding to the event (program B in FIG. 2).

When a reply event (reply A in FIG. 2) to the inquiry A occurs from the terminal control task 51, this reply event is sent to the main processor unit 13, and the main processor unit 13 retrieves the information from the suspended main processor from the task control information storage area 54. By reading the task information for the switch control task A and restarting the suspended task, the main switch control task A is restarted.

As described above, in this embodiment, the main switch control task of the main processor section can be activated within the range of multiplicity n, and the main switch control task can be interrupted and restarted in response to multiple events from the terminal control task. Parallel processing of tasks can be realized by children.

Note that the exchange control method of the present invention is also applicable to a single processor method.

〔Effect of the invention〕

As explained above, in the exchange control method of the present invention, by multiplexing the main switch control tasks of the main processor section, the main processor section performs a plurality of main switch control tasks in response to a plurality of events from the local processor section. It has the effect of being able to start up and process events efficiently. Furthermore, when the present invention is applied to a single processor system, exchange control can be performed using the same program as in a multiprocessor configuration in which the local processor section and the main processor section are separate CPUs.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the switching control method of the present invention, FIG. 2 is a diagram showing the state transition of call processing according to the present invention, and FIG. 3 is a block diagram showing an example of the conventional switching control method. It is. DESCRIPTION OF SYMBOLS 1... Central control unit, 2... Line circuit, 3... Line switch, 4... Main switch, 5, 7... Storage device, 11... Event monitoring unit, 12... Local processor section, 13... Main processor section, 51...
・Terminal control task, 52... Main switch control task,
53° 73... Common data, 54... Task control information storage area, 61.62... Terminal, 71... Terminal control program, 72... Main switch control program. Figure Z

Claims (1)

[Claims] In a multiprocessor exchange control system that has a main processor unit that controls the main switch and performs call control processing, and a local processor unit that analyzes events from the terminal and controls the terminal, the system is activated when an event occurs from the terminal. 1. An exchange control method, comprising: a control means for multiplexing tasks of the main processor section to cause the main processor section to process a plurality of events from the local processor section in parallel.