JPH04128456U - level testing machine - Google Patents

Abstract

(57) [Summary] [Purpose] To confirm the validity of the switching equipment level in an extremely short time and with high efficiency, and to reduce a large amount of labor and time during shipping inspection of the switching equipment level and on-site maintenance work. . [Configuration] Same as switch 1, line interface 3-1
~3-6 and trunk interfaces 14-1 to 14-7
It is equipped with a built-in storage device that interfaces with up to N stages of switching equipment and stores the dial information of the switching equipment, and automatically calls the switching equipment based on that information, and automatically calls the switching equipment with N stages of cascade connection. form a path. In addition, each test machine has one oscillator 16 and one level meter.
7 is built-in and shared in a time-sharing manner, so that level measurements in N stages cascaded can be carried out in parallel for up to M groups at the same time. Further, if the actual measurement value when N stages are connected is NG, each stage is connected to the level meter 17, the level is measured, and the defective location is identified.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This idea is based on a switching system that can change the level of the call signal sent to the line for each call. This relates to a level testing machine that automatically performs a level test.

0002

[Conventional technology]

An example of a conventional level tester is shown in FIG. 3 and will be described. In this Figure 3, 1 is a switchboard, 2 is an analog extension terminal, and 3 is this analog terminal. 4 is an analog line interface that accommodates the terminal 2, and 4 is the central office line interface that accommodates the telephone line. rank, 5 is a pseudo exchange, 6 is an analog terminal connected to this pseudo exchange 5, 7 -1, 7-2 are changeover switches to the measurement system, 8 is a pseudo telephone circuit, 9 is an oscillator or 10 is a power supply circuit, 11 is a battery, 12 is a level meter or an It is a silator.

0003 Next, the operation will be explained. For measurement, first, switch 7 is switched to the actual terminal side. and , the analog extension terminal 2 makes a call to the central office, and the analog extension terminal 2 connects to the pseudo exchange 5. A communication path is formed with the terminal 6. Next, in this state, quickly switch the selector switch 7 to the measurement system and set the oscillator. 9 to the pseudo telephone circuit 8, analog line interface 3, and central office line transformer. 4, feed circuit 10, measure the level with level meter 12, and reach the desired level. I was repeatedly measuring each line to see if it was working properly.

0004

[Problem that the idea aims to solve]

Conventional level testers are configured as described above, so depending on the actual terminal, Connect the path by sending/receiving each line and connect to the oscillator and level meter. In large-capacity exchanges, it is necessary to change the level and measure the level. There were issues such as the enormous amount of work required just for the gender confirmation test.

[0005] This idea was devised to solve this problem, and it is possible to use a switching device and a level test. By physically connecting the machine to the line trunk and operating the test machine, N stages (N: Automatically connects lines and trunks (natural numbers), and uses built-in oscillators and level meters. The purpose of this project is to obtain a level tester that measures speech levels using a computer.

[0006]

[Means to solve the problem]

The level tester based on this invention measures the transmission and reception level of call signals on the line for each call. In level testing of exchangers that can be changed to The test equipment has a built-in data center, and the common data of the above-mentioned exchange equipment is registered in this test equipment. Level measurement is automatically performed using trunk-line cascade connections (N stages, N: natural number). It is designed to form a space. In addition, a level testing machine based on another invention of this invention is By sharing each oscillator and level meter in a time-sharing manner, cascading Now, M sets (M: natural number) of N level level exams will be conducted simultaneously in parallel. It is something. Furthermore, a level tester based on another invention of this invention is based on the first invention. If the measurement result is NG, change the connection to a level meter for each level. , the level is measured and defective (NG) locations are identified.

[0007]

[Effect]

In this invention, the N-stage connection between the exchange and the line-trunk is automatically performed, The level is automatically measured after the communication path is formed, and up to M sets of tests can be performed in parallel at the same time. If the test result is NG, insert a level meter at each stage. and identify the location of the problem.

[0008]

【Example】

Figure 1 is a block diagram showing an embodiment of the level testing machine based on this invention. An example is shown in which the number of stages N=3 and the number of simultaneous parallel processing M=2. In FIG. 1, the same symbols as in FIG. 3 indicate corresponding parts, 3-1, 3-2, ...3-6 is analog line interface, 4-1, 4-2...4-6 is interchange Switching machine 1's central office line trunk, 13 is a level tester, 14-1, 14-2...14- 7 is an address of the level tester 13 connected to the central office line trunks 4-1 to 4-6 of the exchange 1. Analog line interface, 15-1, 15-2...15-5 are also replaced. Analog line interface 14-2, 14-3, 14-5, 14-6 of machine 1 The central office line trunk of the level tester 13 is connected to the level tester 13, and 16 and 17 are the level testers 13 is a built-in oscillator and level meter. Then, the common data of the exchange 1 is configured to be registered in the level tester 13. ing.

[0009] Figure 2 shows how to isolate the NG point when the measurement result is NG using this idea. 2, each reference numeral in FIG. 2 is the same as that in FIG. 1.

0010 Next, the operation of the embodiment shown in FIG. 1 will be explained. First, connect the analog line interface 3 of the exchange 1 to be measured and the level test. The central office line trunk 15 of the testing machine 13 is connected to the central office trunk 4 of the exchange 1 and the level testing machine 13. physically connect the analog line interface 14 of the and level test The level tester 13 is started and the level tester 13 is started based on the data registered in advance. dial that can be connected in N stages from the analog line interface 14 of the switch 1 to the switch 1. After connecting the N stages of the trunk-line, the communication path is automatically answered, and the oscillator is activated. The test tone sent out from the level tester 16 is connected to the analog line interface of the level tester 13. Interface 14 - Central office trunk of exchange 1 - Analog line interface of exchange 1 Base 3 - Office line trunk 15 of level tester 13 - Analog of level tester 13 Through the line interface 14...(N stage)..., level tester 1 The reception level is measured by the level meter 17 of No. 3. At the same time, the level The oscillator 16 and level meter 17 built into the tester 13 are time-shared with systems 1 to M. By switching to , up to M level exams can be processed in parallel. Ru.

[0011] Next, the operation when the measurement result is defective (NG) will be explained with reference to FIG. If the measurement result is NG in the above-mentioned N-stage connection, the level tester 13 Switch the path of the first stage central office line trunk 15 to the built-in level meter 17 and record the measured value. indicate. Next, switch to the built-in level meter 17 one after another to the second stage, third stage, etc. Display the measured value and determine from that value at which stage and between which stage NG occurs. can do.

0012 In addition, in the above embodiment, the analog line interface and the central office line trunk are Although we have shown the test method for analog leased line trunks, the same test method can also be applied to be effective. In addition, even in exchanges without a level variable function, the same measurement method can be used to The normality of the face circuit can be confirmed in a short time.

[0013]

[Effect of the idea]

As mentioned above, according to this idea, an oscillator and a level meter are built into the test machine. By registering common data of the exchange in the test equipment, calls between the exchange and the test equipment can be made. Since it is possible to process M sets of automatic line connections and automatic level measurements in parallel, the switchboard level can be reduced. The validity of the bell can be confirmed in an extremely short time and with high efficiency, making it possible to It is possible to reduce the amount of labor and time required during shipping inspection and on-site maintenance work. This has the great effect of

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of a level tester according to the invention.

FIG. 2 is a configuration diagram showing a method of isolating NG points when the measurement result is NG in this invention.

FIG. 3 is a block diagram showing an example of a conventional level tester.

[Explanation of symbols]

1 Exchanges 3-1 to 3-6 Analog line interfaces 4-1 to 4-6 Office line trunk 13 Level testing machines 14-1 to 14-7 Analog line interfaces of level testing machines 15-1 to 15-5 Level testing machines Office line trunk 16 Oscillator 17 Level meter

Claims (3)

[Scope of utility model registration request] Claim 1: In a level test of an exchange that can change the transmission and reception level of a call signal to a line for each call, an oscillator and a level meter are built into the test equipment, and common data of the exchange is registered in this test equipment. A level tester characterized in that the level measurement is performed by automatically forming a path by cascading trunks and lines (N stages, N: a natural number). [Claim 2] The level testing machine according to Claim 1, comprising:
By sharing each built-in oscillator and level meter in a time-sharing manner, it is possible to simultaneously perform M sets (M: natural number) of level tests of N cascaded stages in parallel. Level test machine. 3. The level testing machine according to claim 1,
A level testing machine characterized in that when a measurement result is defective, each stage is connected to a level meter, the level is measured, and the defective location is identified.