JPH02223264A - Digital exchange provided with test tool and loading system for test program - Google Patents

Abstract

PURPOSE:To perform a test by hardware constitution in performing an operation as it is and to improve test quality by providing a means to set work order information on a line processor, and a serial interface adaptor. CONSTITUTION:The devices 2-6 comprising the line processor 1 are duplicated to the ones in current use and spare ones, and the device in current use or the spare device is connected to a call processor 10 by a network 2, and a test program can be set at a spare main storage 4. A work order register to hold the work order information (IPL specification) is provided in the inside of a central processing unit 3, and also, a ROM housing a transfer program for initial program loading IPL is loaded on the serial interface adaptor 7, and also, a function to transfer the transfer program to the main storage 4 by a command from the central processing unit 3 is attached. Therefore, the test program can be set on the main storage 4 of the line processor 1 from a personal computer 8. Thereby, all the hardware of the line processor can be tested even when it is not connected to the call processor 10.

Description

[Detailed Description of the Invention] (Summary) A line processor that detects a call from a group of Hitoyoshi circuits;
Regarding the test method for digital switching equipment that has a call processor in its processing section that controls the line processor and processes calls, it is possible to test the line processor's hardware by simply connecting a simple test tool without changing the line processor's hardware configuration. The line processor has a central processing unit that performs connection processing with the call processor and a main memory that stores the test program, and the central processing unit selects the initial program load type. It has means for setting selected order information in the order register, and means for changing and controlling the contents of the order register, and has a personal computer externally connected to the central processing unit through a parallel interface, and a means for setting the selected order information in the order register, and a personal computer externally connected to the central processing unit through a parallel interface, and Equipped with an external tool consisting of a serial interface adapter that connects the personal computer and the common bus of the line processor, the test program is transferred to the personal computer based on the order register information in the central processing unit according to instructions from the personal computer. The configuration is configured so that the data is transferred from to the main storage device.

[Industrial application field]

The present invention relates to a method for testing a line processor of a digital exchange.

In recent years, the scale of digital exchanges has increased with the introduction of 15DN and Centrex, and in particular, there is a need to improve the processing capacity of line processors (LPRs) that perform call detection processing on subscriber circuits. The processing capacity of the microprocessors installed in each group is insufficient, so the call processor (CPR) for call processing and the main processor (MP) for general processing are
Using the same processor as R), call processing and control communications have come to be carried out using a common line signaling method with a call processor.

[Conventional technology]

Conventionally, when testing the hardware of the main processor or call processor, a test program was loaded from a magnetic tape unit connected to the main processor, and this test program was used to perform the hardware test of the main processor or call processor. On the other hand, conventional line processors are equipped with a microprocessor, and because the processing scale is small, the microprocessor has a self-diagnosis function, making it possible to test the line processor's hardware simply by operating keys from outside. .

A block diagram of a conventional line processor is shown in Figure 4 (a).
). In the figure, 11 is a line processor LPR
, 12 is a CPU (microcomputer μP), 13
is a ROM, 14 is a RAM, 15 is a communication control device, 16 is a subscriber circuit interface, and 17 is a call processor C.
Show PR.

Each configuration of the line processor 11 is duplicated and has regular and standby devices, and is connected to a group of subscriber circuits by a subscriber circuit interface 16, and connected to a call processor 17 by a communication control device 15 to connect each subscriber circuit. group call processing. The CPU 12 consists of a microcomputer, and not only performs connection processing for the subscriber circuit group within the line processor 11, but also has a self-diagnosis function within the line processor, and is capable of testing the hardware of the line processor 11 by key operation from the outside. .

Next, a conventional initial program load selection method with the call processor 17 is shown in FIG. 4(b).

In the figure, an IPL signal for initial program setting can be selected by an order setting switch provided in the CPU 12 of the line processor 11.

That is, in the operating state, since the initial program load type is set to rsGc-IPL in order to perform processing between the line processor 11 and the call processor 17, no additional changes can be made.

[Problem to be solved by the invention]

However, as mentioned above, new line processors use the same processor as the main processor and call processor, so the self-diagnosis function alone is not sufficient for testing, and hardware testing using a test program has become essential.

If the test program can be transferred (downloaded) from the call processor to the line processor, it will be possible to perform a hardware test of the line processor from the host in the same way as the main processor or call processor. There is no guarantee that the download will be possible because it is assumed that the link between the file and the line processor is normal, and that the line processor is normal.

Also, considering the case where the line processor is installed remotely, connecting the magnetic tape unit to the line processor and loading the test program requires bringing the magnetic tape unit to the test station, and the line processor is also a means of setting the initial program. Since the IPL signal is different from that of the main processor and call processor, it is not possible to easily perform a hardware test without changing the hardware configuration.

An object of the present invention is to enable hardware testing of a line processor by simply connecting a simple test tool to the line processor without changing the hardware configuration of the line processor.

[Failure to solve the problem]

FIG. 1 shows a basic configuration diagram of the line processor testing method of the present invention. In the figure, 1 is the line processor LPR
, 2 is a network, 3 is a central processing unit, 4 is a main storage device, 5 is a channel control device, 6 is a common line control device 5G
C17 is a serial interface adapter SIA, 8 is a personal computer, 9 is a test tool, and 10 is a call processor CPR.

The component devices 2 to 6 of the line processor 1 are duplexed into active and standby devices, and the active or standby devices are connected to the call processor 10 via the network 2, and the test program is stored in the standby main storage device 4. Can be set to 0
In the present invention, an external tool 9 consisting of a personal computer 8 and a serial interface adapter 7 is connected to the outside for testing purposes, and the personal computer 8 is connected to the central processing unit 3 via a parallel interface.
It is connected to a common bus via a serial interface adapter 7. Common line control device 6 controls communication with call processor IO.

Note that the main storage device 4 and channel control device 5 can be controlled from a console connected to the central processing unit 3.

A function of providing an order register for holding order information (IPL type) inside the central processing unit 3 and setting the information of the order in the order register when power is input to the central processing unit 3;
Added the ability to change the contents through software control.

Further, the serial interface adapter 7 is equipped with a ROM containing a transfer program for the initial program load IPL, and has a function of transferring the transfer program to the main storage device 4 based on a command from the central processing unit 3.

With the above function, a test program can be set in the main storage device 4 of the line processor 1 from the personal computer 8.

[Effect]

A flowchart of the control procedure of the present invention is shown in FIG. In the figure, (1) a serial interface adapter 7 is installed in an empty slot of the line processor 1;

(2) Connect the cable between the serial interface adapter 7 and the personal computer 8 using the serial interface procedure.

■ Connect the cable between the personal computer 8 and the central processing unit 3 using the parallel interface procedure.

■ An I/O is sent from the personal computer 8 to the order register in the central processing unit 3 via the serial interface procedure.
Set the PL type to be the program "SIA-IPLJ" of the serial interface adapter 7. Note that when the power is turned on, the initial work order rsGc-IPL is set.

(2) Sending an IPL signal from the personal computer 8 to the central processing unit 3 via a parallel interface procedure.

■ The microprogram in the central processing unit 3 receives the IPL request, reads the construction order register, and confirms that the IPL type is "S".
Serial interface adapter 7 by being IAJ
Sends an IPL command to.

(2) When the serial interface adapter 7 receives the IPL command from the central processing unit 3, it transfers the transfer program on the ROM to the main storage device 4 of the line processor l.

(2) When the transfer of the transfer program is completed, the central processing unit 3 starts the transfer program on the main storage device 4.

■ The transfer program transfers the test program from the personal computer 8 to the serial interface adapter 7.
The data is transferred to the main storage device 4 of the line processor 1 via the .

By the above procedure, it becomes possible to load the test program from the personal computer 8 to the main memory 4 of the line processor 1.

〔Example〕

An embodiment of the IPL (initial program load) selection method of the present invention is shown in FIG. Ru.

22 is the IPL signal branch, rMT-IP for magnetic tape.
LJ, processing program between call processor and main processor rCCA-I P LJ, processing program "SIA-" by serial interface adapter
Consists of IPL, etc. 23 accepts external software control of the line processor in the construction order register, and selects "SIA-IPL".
, performs additional control of the program according to instructions.

Conventionally, when the microprogram of the central processing unit receives an IPL request, it reads information from the order setting switch 21 and determines the IPL type (see FIG. 4).

In the new method, an order register 23 is added inside the central processing unit as shown in FIG.
, and a function to change the contents of the work order register 23 under software control, making it possible to change work order information from the outside without changing the hardware configuration (work order). , the microprogram of the central processing unit can determine the IPL type by reading the work order register 23. As a result of the above, it is possible to perform hardware tests on digital exchanges with the same hardware configuration as used during operation.

Next, an embodiment of a method for setting initial program load (SIA-IPL) of a serial interface adapter is shown in FIG. 3(b). In the figure, 24 is the main memory device MM;
5 is a central processing unit CCl26 is a channel control unit CHC
l27 is a serial interface adapter SIA,
28 indicates a personal computer PC. Previously I
It does not have rs IA-IPL as a PL type.

In this method, the microprogram of CC25 is
Added the IPL function and made it possible to select SIA-IPLJ using software instructions.

Furthermore, the 5IA27 is equipped with a ROM containing a transfer program for IPL, and a function has been added to transfer the transfer program to the MM24 according to instructions from the microprogram of the CC25. In addition, CC25 has a console control function CNS as shown in the figure, so maintenance personnel can use it as if it were CNS.
CC from PC28 in the same way as operating the console
Any data can be set in the internal registers of 25.

The IPL procedure according to this method starts from PC2B to CC25.
Change the contents of the internal work note register to “SIA-IPL.

and then tpL from PC2B to CC25
By sending the request, the microprogram of the CC25 determines that it is an SIA-IPLJ instruction, and sends an IPL command to the 5IA27.
When the command is received, the transfer program is started and the initial program setting is completed.

〔Effect of the invention〕

In the case of the line processor of the present invention, all the hardware of the line processor can be tested even if it is not connected to the call processor. Test quality is improved because testing can be performed with the hardware configuration unchanged.

Furthermore, the main processor, call processor, and line processor are all tested using the same method.
Tests can be performed simply by connecting a computer (A. PC, etc.). This allows it to be applied not only to station construction, but also to hardware tests when adding squall processors or line processors.

In addition, by equipping the serial interface adapter SIA with a ROM containing a transfer program, SIA
Various personal computers can be connected by simply changing the ROM.

13 is a ROM, 14 is a RAM, 15 is a communication control device, 16 is a subscriber circuit interface, 21 is an order setting switch, 22 is an IPL signal branch, and 23 is an order register. Note that ■ to ■ indicate step failures in the flowchart.

[Brief explanation of the drawing]

Fig. 1 is a diagram of the principle configuration of the present invention, Fig. 2 is a flowchart of the test method of the present invention, Fig. 3 is an embodiment of the initial program selection and setting method of the present invention, and Fig. 4 is a block diagram of the conventional example. shows. In the figure, 1 and 11 are line processors, 2 is a network, 3.25 is a central processing unit, 4.24 is a main memory, 5.26 is a channel control device, 6 is a common line control device, and 7.27 is a serial Interface adapter, 8.2
8 is a personal computer, 9 is a test tool, 10.
17 is a call processor; 12 is a flowchart of the test method of the present invention; FIG. 2 (a) Example of the initial program selection method; (b) Example of the initial program setting method; Figure 3

Claims (2)

[Claims] (1) In a digital exchange whose processing section includes a line processor (1) that detects calls from a group of subscriber circuits and a call processor (10) that controls the line processor (1) and performs call processing, the line processor (1) has a central processing unit (3) that performs connection processing with a call processor (10), and a main storage device (4) that stores test programs, and the central processing unit (3) is used for initial program loading. A personal computer (3) externally connected to the central processing unit (3), comprising means for setting order information for selecting a type in the order register, and means for changing and controlling the contents of the order register; 8) and the personal computer (8) via a serial interface.
) and a common path of the line processor (1). Based on the notes, a digital exchange equipped with a test tool, characterized in that it transfers a test program from a personal computer (8) to a main memory (4). (2) The first step is to install the serial interface adapter (7) in the empty slot of the line processor (1), and connect the cable between the serial interface adapter (7) and the personal computer (8) using the serial interface procedure. a second step of connecting the cable between the personal computer (8) and the central processing unit (3) via a parallel interface procedure; and a third step of connecting the cable between the personal computer (8) and the central processing unit (3) via a serial interface procedure. The IPL type is serial interface adapter (7) in the order register in the processing device (3).
a fourth step of setting the program to be "SIA-IPL" of the computer; a fifth step of sending an IPL signal from the personal computer (8) to the central processing unit (3) via a parallel interface procedure; The microprogram in the processing unit (3) receives the IPL request, reads the construction order register, and confirms that the IPL type is “S”.
Serial interface adapter (
When the serial interface adapter (7) receives the IPL command from the central processing unit (3), the serial interface adapter (7) transfers the transfer program on the ROM to the main memory of the line processor (1). (
4) the seventh step of transferring to the central processing unit (3)
is transferred to the main memory (4) when the transfer of the transfer program is completed.
); and the transfer program transfers the test program from the personal computer (8) to the serial interface adapter (8).
7) to the main memory (4) of the line processor (1).
) A test program loading method consisting of a ninth step of transferring the test program to