JPH01255355A - System for testing signal - Google Patents

Abstract

PURPOSE:To execute the simplification, labor saving and speed-up of a signal test by deciding a test procedure, a signal format, etc., in an interactive format and automatically executing the signal test after the decision. CONSTITUTION:An external storage device 4 stores a standard test procedure, a standard signal format, data for analyzing a signal, etc., to be prepared beforehand, and a computer 3 allows a testing person to designated the detail of the test procedure, the detail of the signal format, etc., based on the standard test procedure, the standard signal format, etc., in the external storage device 4 in the interactive format through a VDU(Visual Display Unit) picture 6. Based on the test procedure and signal format to be decided by the designation, on the data for analyzing the signal in the external storage device 4, etc., the signal test is automatically executed, a test result is outputted to an output device 5, and a signal transmitter-receiver 2 transmits/receives the signal related to the signal test with a device to be tested based on the instruction of the computer 3. Thus, the simplification, labor saving and speed-up of the signal test can be executed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a signal testing method, and in particular to an ISDN (Inte
rated 5 services Digital
Signal tests related to ISDN terminals, etc. connected to electronic exchanges for ISDN and ISDN electronic exchanges (can the equipment under test ('g1 slave exchanges and terminals, etc.) accurately communicate certain signals with other equipment? This relates to a signal test method for conducting a test to confirm whether or not the

[Conventional technology]

Signals handled by conventional electronic exchanges (ISDN electronic exchanges) and terminals connected to the electronic exchanges (control information necessary to realize communication, etc.) are generally DP ( Dial Pulse) signal, MF (Multi-Frequency) signal, P
B (Push Button) signal and MFC (
Mu I t i -Frequency Comp
It was a relatively simple signal such as No. 8 (No. 8).

Therefore, for example, a tester that automatically tests each of the above-mentioned signals related to an electronic exchange (without requiring any instructions or operations from the tester during the signal test) can test the equipment under test. It was a relatively simple device that only needed to have the ability to send and receive data to and from an electronic exchange, and to display the test results to determine whether or not the data transmission was possible. The test equipment has scalability (standard signal formats that can be handled in signal tests (structure of signals transmitted and received from equipment under test such as electronic exchanges in signal tests (configuration of focus rows), etc.) and standard signal formats that can be handled in signal tests. (The property of being able to expand (increase) test procedures, etc.) was not given much consideration).

On the other hand, ISDN electronic exchanges and ISDN electronic exchanges connected to ISDN electronic exchanges to realize ISDN.
No. 13 handled by terminals uses complex signals that are different from conventional ones, such as signals based on the D channel protocol on the D channel (hereinafter simply referred to as "D channel protocol"), and the signal procedure (for transmitting and receiving signals) is used. (procedure) is also very complicated, unlike the conventional signal procedure.

Therefore, it was not possible to automatically perform signal tests related to ISDN electronic exchanges and TSDN terminals using the conventional test equipment described above (signal tests that required the tester's intervention, such as instructions and operations, were performed during the test). ).

[Problem to be solved by the invention]

As mentioned above, the signals handled by IS are becoming more complex.
For signal tests related to DN electronic exchanges and ISDN terminals, etc., it is not possible to use testing equipment that automatically performs signal tests related to conventional electronic exchange tA equipment, etc.
Since the signal test requires intervention such as instructions and operations by the tester, the signal test becomes complicated for the tester etc., and there are disadvantages in that it takes a lot of effort and time to conduct the signal test. be.

For example, testers who conduct signal tests when producing ISDN electronic exchanges and ISDN terminals require a great deal of time to acquire detailed knowledge about signals.
This has the disadvantage that the productivity of electronic exchanges, ISDN terminals, etc. deteriorates.

However, if scalability is not taken into consideration, such as a tester for automatically performing signal tests related to conventional electronic exchanges, etc., the signals handled by ISDN electronic exchanges, etc. will be different in the future. As signals to be tested tend to become more complex and diversified, there is a disadvantage in that it is necessary to constantly replace test equipment for carrying out signal tests in response to the increasing complexity and diversification of signals to be tested.

In view of the above points, an object of the present invention is to
, 7 (No. 3 is not a signal specific to ISDN) and D
Even when testing signals on ISDN electronic exchanges and ISDN terminals that test complex signals such as channel protocols, it is possible to simplify, save labor, and speed up signal testing. An object of the present invention is to provide a signal testing method that can cope with future complexity and diversification of signals handled by electronic exchanges, ISDN terminals, etc.

[Means to solve the problem]

The signal test method of the present invention is applicable to ISDN electronic switching equipment and ISDN.
Interface with electronic exchange for DN and lS
DN electronic exchange equipment 5 Performs signal tests on ISDN electronic exchange equipment and 1sDNi terminals, etc. at the interface with DN terminals (in the δ test method, pre-prepared standard test procedures, standard signal formats and
An external storage device that stores data for No. 3 analysis, etc., and a VDU
The tester is asked to specify the details of the test procedure and the details of the signal format based on the standard test procedure and standard signal format in the external storage device in an interactive manner via a screen, and the test procedure and signal are determined based on the specifications. Automatically executes a signal test based on the format and signal analysis data, etc. in the external storage device, outputs the test results to an output device, and expands the standard test procedure, standard signal format, etc. in the external storage device. It has a computer and a signal transmitting/receiving device that transmits and receives signals related to a signal test between devices under test such as an ISDN electronic exchange and an ISDN terminal based on instructions from the computer.

(Function) In the signal test method of the present invention, an external storage device stores YJP-prepared standard test procedures, standard signal formats, signal analysis data, etc., and a computer uses the external storage device in an interactive manner via the VDU screen. The test procedure and signal format determined by the tester's specification of the details of the test procedure and the details of the signal format based on the standard test procedure and standard (ε format etc.) and the signal in the external storage device. It automatically executes signal tests based on analysis data, outputs the test results to the output device, expands the standard test procedures and standard signal formats in the external storage device, and the signal transmitting/receiving device connects to ISDN based on instructions from the computer. Transmits and receives signals related to signal tests between the equipment under test, such as the electronic exchange and the ISDN terminal.

〔Example〕

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

FIG. 1 is a block diagram showing the configuration of an embodiment of the signal testing method of the present invention. The signal test method of this embodiment is
DN electronic exchange (including ISDN electronic exchange 7 shown in Figure 2) and ISDN terminal (ISDN shown in Figure 3)
a connector 1 for connecting a device under test (including a terminal 8) and the signal transmitting/receiving device 2; a signal transmitting/receiving device 2 for transmitting and receiving signals related to a signal test with the device under test based on instructions from the computer 3; VDU (Visual Disp
details of the test procedure and details of the signal format based on the standard test procedure (standard test procedure) and standard signal format (standard signal format) in the external storage device 4 in an interactive manner via the screen 6 A signal test is automatically executed based on the test procedure and signal format determined by the designation, signal analysis data in the external storage device 4, etc., and the test results are sent to the printer 5 and the VDU screen. A computer 3 outputs the standard test procedures, standard signal formats, etc. in the external storage device 4 to an output device such as 6, and expands the standard test procedures, standard signal formats, signal analysis data, etc. prepared in advance in a database. an external storage device 4 for storing formats, etc., a printer 5 for printing test results, etc., and a display when test procedures and signal formats are determined in an interactive format, displaying test results, etc.
DU screen 6 (attached to computer 3).

FIG. 2 is a block diagram showing a configuration when the signal test method of this embodiment is applied to a signal test targeting No. 7 signals. In the general example shown in this figure, the ISDN electronic exchange 7 which is the device under test is No. 7 trunk 71 (
(Often used as ISDN electronic switching equipment 7)
It is connected to connector 1 via. Also, the signal transmitting/receiving device 24! It functions as a signal transmitting/receiving device for No. 7 (No. 7 signals are used for ISDN electronic exchanges and other IS
The signal is transmitted and received to and from the DN electronic exchange (since it is No. 3, the signal transmitting/receiving device 2 in this case is assumed to be the ISDN electronic exchange).

FIG. 3 is a block diagram showing a configuration when the signal test method of this embodiment is applied to a signal test targeting the D channel protocol. In the application example shown in this figure, an ISDN terminal 8, which is a device under test, is connected to a connector l. In addition, the signal transmitting and receiving device 2 functions as a signal transmitting and receiving device for the D channel protocol (since the D channel protocol is a signal transmitted and received between the ISDN electronic exchange and the TSDN terminal, the signal transmitting and receiving device 2 in this case is assumed to be an ISDN electronic switch.When the signal test method of this embodiment is applied to a D channel protocol test, the device under test is an ISD
A configuration is also conceivable in which the signal transmitting/receiving device 2 is assumed to be an ISDN terminal.

Referring to FIG. 4, the processing of the signal test method of this embodiment includes a test item list display step 11, a test item selection step 12, a standard test procedure etc. display step 13, and an interactive test procedure etc. detailed determination step. 14, a standardization determination step 15, an external storage device registration step 16, a signal test automatic execution step 17, and a test result output template IB.

Next, the operation of the signal testing system of this embodiment configured as described above will be explained.

First, connector l, ISDN electronic exchange 7 and IS
After the device under test such as the DN terminal 8 is connected as shown in the configurations of FIGS. 2 and 3, the computer 3
For example, a list of test items stored in the external storage device 4 is displayed on the VDU screen 6 under the control of rN.
Test items related to the signal type, such as "O, 7 signal test" and "D channel protocol test" are displayed, and when one is selected based on the type of signal to be tested, the content of the signal test indicated by that test item is displayed. Test items indicating the type of test (standard tests such as "Outgoing 1δ test" and "Incoming call test"
Standard No. 13 test whose test procedure and signal format are stored in advance in the external storage device 4 (in this case, the test procedure is the standard test procedure and the signal format is the standard signal format) Test items indicating signal tests that can be arbitrarily set by the tester) are displayed (step 11).

Based on this display, the tester selects one of the test items on the computer 3 (step 1
2).

Next, the standard test procedure, standard number δ format, etc. held in the external storage device 4 corresponding to the test item selected in step 12 are displayed on the VDU screen 6 (step 13).

Based on the displayed standard test procedure and standard signal format, etc., the details of the test procedure and signal format, etc. are determined by the tester in an interactive format (standard test procedure and standard). (Partial changes to standard test procedures, standard signal formats, etc. are made) (Step 14)
).

Next, in order to use the test procedures and signal formats whose details were determined in step 14 for the next signal test, etc., whether or not to newly standardize the test procedures and signal formats, etc. The computer 3 prompts the examiner to make a determination as to whether or not to do so (step 15).
.

If the tester determines that standardization should be performed in step 15, the test procedure and signal format determined in step 14 are stored in the external storage device 4 by the computer 3 as the standard test procedure, standard signal format, etc. (This makes it possible to expand the functions of the signal test method (standard test procedure, standard signal format, etc.) of this embodiment) (step 16).

If the tester determines in step 15 that standardization should not be performed, or if the registration process in step 16 is completed, the computer Communication between the signal transmitting and receiving device 2 and the signal transmitting and receiving device 2 and the device under test (No.

7 signals and No. 16 related to signal tests such as D channel protocols) are performed, and predetermined signal tests are automatically performed based on instructions and judgments from the computer 3 (judgments based on signal analysis data in the external storage device 4, etc.). is executed. At this time, in the case of a signal test of the N017 signal using the ISDN electronic exchange 7 as the device under test (signal test corresponding to "N007 signal test" displayed in step 11), the configuration shown in FIG. A signal test is being performed on the D channel protocol with ISDN terminal 8 as the device under test ("
Signal test corresponding to "D channel protocol test")
In this case, the signal test is executed with the configuration shown in FIG. 3 (step 17).

The test results of the signal test in step 17 are printed on printer 5 and VD.
It is outputted by the computer 3 to an output device such as the U screen 6 and notified to the examiner (it is once outputted to an external storage device r!1.4, is held, and then outputted to a spatially and temporally separate output device. (Step 18)
).

〔Effect of the invention〕

As explained above, the present invention allows the test procedure, signal format, etc. to be determined in advance in an interactive manner in signal tests related to ISDN electronic exchanges and ISDN terminals, and after the determination, the signal test can be automatically executed (test (The results can be immediately output to an output gM such as a printer or VDU screen for use.) This allows the signals to be tested to be complex signals such as the N087 signal and D channel protocol for ISDN. Even if there is, it is possible to simplify, save labor, and speed up the signal test (for example, there is no need for the tester to learn the details of the signal).

In addition, the test procedures and signal formats determined interactively during the signal test process can be set as new standard test procedures and standard signal formats (standard test procedures and standard signal formats can be expanded). This has the effect of making it possible to cope with future 15J complexity and diversification of signals received by electronic exchanges, ISDN terminals, etc.

[Brief explanation of the drawing]

Figure 1 is a block diagram showing the configuration of an embodiment of the present invention. Figure 2 is a signal test using the signal test method shown in Figure 1 using an ISDN electronic exchange as the device under test and the N017 signal as the signal to be tested. Figure 3 is a block diagram showing the configuration when the signal test method shown in Figure 1 is applied to a signal test in which the ISDN terminal is the device under test and the D channel protocol is the signal to be tested. FIG. 4 is a flowchart showing the processing of the signal test method shown in FIG. In the figure, l...Connector, 2...Signal transmitting/receiving device, 3...Computer, 4...External storage device, 5...Printer, 6...VDU screen, 7...For ISDN Electronic exchange, 8...ISDN terminal, 71...No. Trunk for 7.

Claims (1)

[Claims] An interface between an ISDN electronic exchange and an ISDN electronic exchange, and an ISDN electronic exchange and an ISDN
In a signal test method that performs signal tests on ISDN electronic exchanges, ISDN terminals, etc. at the interface with terminals, an external storage device that stores previously prepared standard test procedures, standard signal formats, data for signal analysis, etc.; The tester is asked to specify the details of the test procedure and the details of the signal format based on the standard test procedure and standard signal format in the external storage device in an interactive manner via the VDU screen, and the test procedure and Automatically executes a signal test based on the signal format and signal analysis data in the external storage device, outputs the test result to an output device, and expands the standard test procedure and standard signal format in the external storage device. and a signal transmitting/receiving device that transmits and receives signals related to the signal test between devices under test such as an ISDN electronic exchange and an ISDN terminal based on instructions from the computer. .