JPH04288795A - Telephone exchange system - Google Patents

Abstract

PURPOSE:To freely prepare an applied processing task by a user and to execute the task at the telephone exchange system without any trouble. CONSTITUTION:A general purpose real time OS is provided to execute multi-task control. At this OS, an exchange processing task is made most preferential, and the order of processings is controlled by applying prescribed priority orders to the other applied processing tasks. When it is necessary for the exchange processing task and the applied processing task to execute communication with the other processing tasks, the communication is executed by registering communication requests and the identification information of processing tasks on the side of a communicating party on registering means 13-1-13-4.

Description

[Detailed description of the invention]

[Purpose of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to telephone exchange systems such as digital private branch exchanges.

0002

[Prior Art] Conventional digital private branch exchange (hereinafter referred to as P
In the PBX, the system was configured with a real-time OS (operating system) dedicated to PBX exchange processing. That is, as shown in FIG.
Tasks are controlled under a dedicated exchange processing real-time OS, and if you want to include applied processing tasks according to the user's wishes, you will have to create an appropriate program unless you have an engineer familiar with this dedicated exchange processing real-time OS. This has caused problems such as the exchange process being hindered.

0003

[Problems to be Solved by the Invention] As described above, in the conventional telephone exchange system, tasks are controlled under a dedicated exchange processing real-time OS, and if an attempt is made to include applied processing tasks requested by the user, the corresponding OS
There are problems such as the creation of a program that prevents the replacement process unless it is done by an engineer who is well-informed.

The present invention was made to solve the problems of the conventional telephone switching system, and its purpose is to enable users to freely create and execute applied processing tasks in the telephone switching system without any inconvenience. To provide a telephone switching system. [Structure of the invention]

[0005]

[Means for Solving the Problems] The present invention provides a general-purpose real-time operating system that controls a plurality of tasks, an exchange processing task that performs processing related to telephone exchange;
When it is necessary to communicate between at least one applied processing task that performs applied processing other than telephone exchange, the exchange processing task, and other processing tasks in the applied processing task, a communication request and processing on the communication partner side. registration means for registering task identification information, and the general-purpose real-time operating system has a priority order for controlling the processing order by giving the exchange processing task the highest priority and assigning a predetermined priority to other processing tasks. a control means, and control for detecting the type of processing according to the occurrence of an event, controlling the processing order by the priority order control means, and performing communication between each processing task according to the registered contents of the registration means. A telephone exchange system was constructed by including means.

[0006]

[Operation] According to the above configuration, since the general-purpose real-time OS performs processing with the exchange processing task as the first priority, the exchange processing is not interfered with by application processing, and,
Application processing tasks can communicate with other application processing tasks or exchange processing tasks, and various application processing can be realized.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 2 is a block diagram of an embodiment according to an embodiment of the present invention. Extension terminals 1-1 to 1-m are extension circuits 2-
1 to 2-m, and external lines 3-1 to 3-n are connected to external line circuits 4-1 to 4-n. Extension circuit 2-1~2
-m, between extension circuits 2-1 to 2-m and external circuit 4-
1 to 4-n, a voice communication path is formed by a switch circuit 5. The central control circuit 6 is composed of a processor, and controls each part based on programs and data stored in the ROM 7 and RAM 8. Central control circuit 6
The extension line circuits 2-1 to 2-m, the outside line circuits 4-1 to 4-n, and the switch circuit 5 are connected by data lines so that data can be sent and received.

FIG. 1 shows the program structure of the program used by the central control circuit 6 in the above-mentioned PBX. This system uses a general-purpose real-time OS (for example, C-TR
ON) controls each task. The tasks include an exchange processing task and at least one application processing task. The exchange processing task is a task that manages various exchange processes of the PBX, such as exchange processing when receiving calls from outside lines 3-1 to 3-n, and other extensions from extension terminals 1-1 to 1-m. This task performs processing related to exchange processing when calling terminals 1-1 to 1-m. Applied processing tasks are tasks related to processing other than exchange processing, such as tasks for creating history regarding call time and call charges,
These are operational tasks related to the so-called answering function.

The general-purpose real-time OS includes a priority order control means 11 that controls the processing order by giving top priority to the exchange processing task and giving a predetermined priority to the application processing tasks, and a means for controlling the processing order in which the exchange processing task is executed in accordance with the occurrence of an event. control means 12 which detects which of the application processing tasks is to be executed, controls the processing order by the priority control means 11, and causes communication between each processing task according to the registered contents of the registration means 13; are provided. In addition, registration means 13-1 to 13-4 are provided for each task, and when communication is required with other tasks, it is possible to set a communication request flag. It is configured so that identification information of the other party's task can be set. The control means 12 causes communication to be performed according to the contents of the registration means 13.

The operations of the program configured as described above are executed as follows according to the flowchart shown in FIG.

[0011] When an event occurs in step 201, the event is captured in step 202.
Proceed to step 203. In step 203, the type of event is detected (the processing task corresponding to the event is detected) and a transition is made to necessary processing. If the event is call processing (
If it is (exchange processing), the process proceeds to step 204 and executes the exchange processing task. Next, in step 207, it is determined whether communication with the application processing task is necessary, and if it is not necessary, the process ends. When communication is necessary, in step 209, the type (identification information) with which application processing is to be communicated is set, a communication request flag is set to the OS, and the OS is called. Then, the OS shifts activation to the necessary application processing task according to the priority order (call processing events are always given top priority).

Next, the event at step 203 is C.
In case of linkage with PU (computer), step 205
At step 208, the application processing task (cooperation with the CPU) is executed, and at step 208, it is determined whether communication with the exchange processing task or other application processing task is necessary, and if it is not necessary, the process ends. When communication is necessary, in step 210, a communication request flag is set for the type of task (exchange processing or other applied processing task) to be communicated with and the OS, and the OS is called. Then, the OS shifts activation to a necessary task (switching processing or other application processing task) according to the priority order (call processing events are always given top priority). Even when the event in step 203 is other than the above, the processing is the same as the processing in conjunction with the CPU.

[0013] With the above configuration, since the exchange processing task is defined as the highest priority processing task, it is possible to implement any application processing without stopping the exchange processing (the general-purpose real-time OS of 1 (with multitasking control function).

[0014] Through the above operations, the normal outside line 3
When an incoming call occurs, the exchange processing task is executed (204) and the process ends. For example, if a task is provided to obtain the call time history as an applied processing task, a communication request is issued from the exchange processing task when necessary, control is passed to the application processing task, and the exchange is made again by the communication request. You can perform processing such as returning to the processing task. That is, in the program configuration of FIG. 1, the part surrounded by the broken line P is open to the user, and the user can assemble a program to realize a desired function without being aware of the exchange process. Note that the application processing task itself may be equipped with a general-purpose OS (eg, Unix, MS-DOS, . . . ) to further increase its versatility for application processing.

[0015]

As explained above, according to the present invention, the general-purpose real-time OS executes the exchange processing task with the highest priority. is guaranteed. Therefore, even if the application processing task and the general-purpose real-time OS are made available to the user, no trouble will occur in the exchange process. For this reason,
Program creation is easy. Furthermore, since communication between each task is possible, various functions can be realized by connecting each task. Even in this case, the exchange processing is given top priority, so the original function of the exchange system is not impaired.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of one embodiment of the present invention.

FIG. 2 is a block diagram of a digital private branch exchange.

FIG. 3 is a flowchart showing the operation of an embodiment of the present invention.

FIG. 4 is a program configuration diagram of a conventional telephone switching system.

[Explanation of symbols]

1-1 to 1-m... Extension terminal 2-1 to 2-m... Extension circuit 3-1 to 3-n... Outside line terminal 4-1 to 4-n... Outside line circuit 5... Switch circuit 6... Central control circuit 7 ...ROM
8...RAM11...Priority order control means
12... Control means 13-1 to 13-4... Registration means

Claims (1)

[Claims] 1. A general-purpose real-time operating system that controls a plurality of tasks; an exchange processing task that performs processing related to telephone exchange; at least one application processing task that performs applied processing other than telephone exchange; said general-purpose real-time operating system includes a registration means for registering a communication request and identification information of a processing task on the communication partner side when it is necessary to communicate with another processing task in an applied processing task; a priority order control means for controlling the processing order by giving top priority to the exchange processing task and giving a predetermined priority to other processing tasks; and a priority order control means for detecting the type of processing according to the occurrence of an event; 1. A telephone exchange system comprising: control means for controlling processing order and for communicating between each processing task in accordance with registered contents of said registration means.