JPH029292A - Electronic exchange system - Google Patents

Abstract

PURPOSE:To easily cope with a fault of an I/O port or the like by assigning a logical I/O port number for each application program and applying message output request from the application program through the use of the logical I/O port number. CONSTITUTION:A logical table 5 stores physical I/O port numbers of I/O ports 3a, 3b-3m outputting actually a message from application programs 2a, 2b-2n corresponding to the logical I/O port number under the control of a maintenance command 6. Then the correspondence is managed so as to be revised properly under the control of the maintenance command 6. Thus, when the output request of the message takes place in the application programs 2a, 2b-2n, the assigned logical I/O port number is used for the assignment to output a message to a prescribed maintenance terminal equipment set to the logical table 5.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to an electronic switching system that employs an I/O port assignment method that can facilitate maintenance services.

BACKGROUND OF THE INVENTION Electronic switching systems are configured to perform switching services in accordance with various application programs. The output of various messages for maintenance is generally performed by direct assignment from a bipedal application program to a maintenance terminal device connected to the I/O boat of the exchange main body.

However, when directly assigning an I/O port from an application program to output a message to a maintenance terminal device, if a failure occurs in that output port, for example, the message cannot be output until the failure in the output port is recovered. There is a problem called. In such a case, it may be possible to change the maintenance terminal device to output messages, but to do so, it is necessary to change the output port assigned from the assignment program.

Moreover, in order to change the output port assigned in an application program, it is necessary to modify the application program itself, compile it, and execute linking and loading again. Therefore, it has been extremely difficult to effectively deal with failures of the output ports.

(Problem to be Solved by the Invention) As described above, in the conventional electronic exchange system, multiple application programs that control various exchange services output messages by directly assigning the output port to which the maintenance terminal device is connected. Therefore, there was a problem in that it was not possible to easily deal with problems such as failures in the output ports.

The present invention has been made in consideration of these circumstances, and its purpose is to easily deal with I/O port failures, etc. without modifying application programs. An object of the present invention is to provide an electronic switching system that employs an efficient assignment method.

[Structure of the Invention] (Means for Solving the Problems) The present invention provides an electronic exchange main body that executes exchange services according to a plurality of application programs, and an electronic exchange main body that is connected to a plurality of I/O ports of the electronic exchange main body. In an electronic switching system equipped with a plurality of maintenance terminal devices, a logical I/O port number is assigned to each application program, and
The message output request from the program is
/O port number, and create a table on the I/O control program that associates the above logical port number with the physical port number that actually outputs messages. , a message is output by determining a physical I/O port based on a logical I/O port number output from an application program.

(Operation) According to the present invention, assignment is performed using the logical I/O port number set for each assignment program without directly specifying the actual physical I/O port, The physical I/O port to which the message should be output is specified by the I/O control program based on the logical I/O port number.

Therefore, even if a failure occurs in one of the output ports, it can be dealt with simply by modifying the I/O control program (correspondence table). Further, since the application program does not need to be aware of the I/O port to which the maintenance terminal device that actually outputs the message is connected, it is possible to provide the program with versatility. As a result, message output processing from an application program can be facilitated and ensured, and maintenance services and the like can be performed efficiently.

(Embodiment) Hereinafter, an embodiment of the electronic switching system according to the present invention will be described with reference to the drawings.

FIG. 1 is a diagram schematically showing the characteristic parts of the switching system according to the embodiment. 1 is the main body of the electronic switching system. 2a2b, ~2n, and is configured to include a solid device (CC) for controlling exchange, a switch network (SWN), etc.

However, this "multiple I provided in the electronic exchange main body 1"
/O ports 3a, 3b, ~3 marks are connected to maintenance terminal devices 4a, 4b, ~4m, respectively.
Various data are input and output via the 0 ports 3a, 3b, .about.4m. Message information output from each of the application programs 2a, 2b, to 2n is also transmitted to the I/O ports 3a,
3b, through 3m to the maintenance terminal device 4a,
4b and 4m to be selectively output and displayed.

Here, the plurality of application programs 2a,
2b to 2n, the I/O port number indicating the output light of the message output from the application program is shown as a logical port number that specifies the application program, for example, as shown in FIG. They are set individually as shown in .

And each application program 2a, 2b.

~2n transmits the message output request to the plurality of I/Os mentioned above.
The O ports 3a, 3b, -3m are not directly assigned, but are assigned indirectly, that is, logically, using the logical port numbers set as described above.

However, each of the above application programs 2a,
I/O that controls message output from 2b, ~2n
The control program 5 forms, for example, a logical table 5a as shown in FIG.
Logical I/O from programs 2a, 2b, ~2n
In response to a message output request assigned using a boat number, the physical ■/○ port number of the I/O boat 3 to which the maintenance terminal device 4 that actually outputs the message is connected is determined, and the I/O port number is determined. A plurality of I/O ports 3a, 3b, to 3m are selectively assigned according to O port numbers.

That is, the logical table 5a associates the logical I/O port numbers with the maintenance commands 6 and the application programs 2a.

I/O that actually outputs messages from 2b, ~2n
Stores the physical I/O port numbers of ports 3a, 3b, to 3m. The correspondence is managed so that it can be changed and set as appropriate under the control of the maintenance command 6.

Therefore, when the I/O control program 5 is given a logical I/O port number indicating a message output request from the assignment programs 2a, 2b, . Target I/O
The physical I/O port number associated with the port number is required. Then, the I/O ports 3a, 2b, to 3o are selectively assigned according to this physical 1/O port number, and the assignment program 2a,
Messages from 2b and 2n are output to a maintenance terminal device 4 connected to its I/O port 3.

In this case, it is of course possible to associate multiple physical I/O port numbers with one logical I/O port number, and conversely, it is possible to associate one physical I/O port number with one logical I/O port number. Of course, it is also possible to associate a plurality of logical I/O port numbers with each other.

According to the electronic exchange system configured in this manner, the application programs 2a2b, to 2n
When a message output request occurs, the assignment program simply assigns it using the logical I/O port number assigned to it, and writes it to the logical table 5.
It is possible to output a message to a predetermined maintenance terminal set in a. Moreover, the maintenance terminal device to which messages should be output can be dealt with simply by modifying the contents of the logical table 5a, and there is no need to modify the ablation program. Therefore I/
It is possible to effectively deal with O port failure,
Changes in the number of I/O ports can be effectively dealt with simply by modifying the logical table 5a using the maintenance command 6.

Furthermore, since there is no need for the application program to prepare the program by considering the I/O port to which the message should actually be output, it is possible to provide versatility. Therefore, it is possible to prevent the occurrence of bugs caused by modification of application programs, and there is no need for compilation or linking, so it is possible to improve the maintainability. be given

Note that the present invention is not limited to the two consecutive embodiments, and the number of application programs, the number of 1/O ports, the method of setting logical I/O port numbers, etc. will depend on the specifications of the switching system. It should be determined accordingly. In addition, the present invention can be implemented with various modifications without departing from the gist thereof.

[Effects of the Invention] As explained below, according to the present invention, a message output request is issued using a logical I/O port number set for each application program, and the I/O control program executes the above request. Actual I/O port assignment is performed using a physical I/O port number that is previously associated with a logical 1/O port number, making application programs more versatile and ensuring reliable message output. This has great practical effects, such as making it possible to achieve effective maintenance and operation by standardizing the system.

[Brief explanation of the drawing]

FIG. 1 is a diagram schematically showing the concept of I/O boat assignment from application programs in an electronic switching system according to an embodiment of the present invention, and FIG. 2 is a diagram showing the logic assigned to each of a plurality of application programs. Figure 3 shows an example of I/O port numbers.
FIG. 3 is a diagram showing an example of the configuration of a logical table in a control program. ■・Electronic exchange main body, 2 a, 2 t], ~2 days・
・Application programs, 3a, 3b, ~3
m... I/O port, 4a, 4b, ~4m... Maintenance terminal device, 5. I/O control program, 5a...
Logical table, 6...Maintenance command. Applicant's agent Patent attorney Takehiko Suzuta

Claims (1)

[Scope of Claims] An electronic exchange main body that executes exchange services according to a plurality of application programs, and a plurality of maintenance terminal devices each connected to a plurality of I/O ports of the electronic exchange main body, In an electronic switching system in which message output from the application program to a maintenance terminal device is controlled by an I/O control program, a logical I/O port number is assigned to each application program, and the message output from the application program is controlled by an I/O control program. A message output request is made using the logical I/O port number, and the I/O port that outputs the message is specified in the logical I/O port number by the I/O control program.
An electronic exchange system characterized in that the determination is made based on an O port number.