KR0121500Y1 - Line test device in exchanger - Google Patents

Abstract

The present invention relates to a subscriber shelf board of an electronic switchgear, and whether the abnormality of each shelf line of the shelf board is connected to the in-test bus installed outside of the board by using a telephone from the outside, It is to be done.

According to the present invention, when an error occurs in any subscriber line, it is possible to test whether the subscriber line is abnormal without removing the subscriber cable, so that normal service is provided to the other subscriber line, and call connection through the actual telephone connection The test can substantially confirm that the subscriber line is faulty, providing reliability in the subscriber line test.

In addition, two subscriber lines can be selected in one subscriber shelf and mutual call connection can be performed to efficiently test incoming and outgoing subscriber lines.

Description

Circuit tester for each subscriber shelf of electronic switching system

1 is a block diagram of a subscriber shelf board of a conventional electronic switch.

2 is a block diagram of a circuit test apparatus for each subscriber shelf of an electronic switching system according to the present invention.

FIG. 3 is an exemplary view of testing an arbitrary subscriber line by connecting a telephone to a terminal protruding from the outside in the present invention shown in FIG.

* Explanation of symbols for main parts of the drawings

10: power board 20: control board

30: subscriber board 40: in test bus

50: test terminal 60: out test relay

70: phosphorus test relay 80: ring relay

The present invention relates to a subscriber shelf board of an electronic switchboard, and in particular, whether an abnormality of each shelf line of the shelf board is installed outside the board and conveniently connected to a conventional in-test bus by using a telephone from outside. The present invention relates to a circuit test apparatus for each subscriber shelf of an electronic switching system that enables to perform screening abnormality and test.

As shown in FIG. 1 of the accompanying drawings, the conventional electronic switchboard subscriber shelf board includes a power board 10 for supplying necessary operating power to the entire board side mounted on the subscriber shelf board, and the electronic switchboard. A subscriber board 30 for connecting a plurality of subscriber lines to be connected, a control board 20 for controlling overall operation such as matching of each subscriber line connected to the subscriber board 30 and mutual matching between other boards, and a shelf board It consists of a back board (not shown) for connecting the signal connection and power between the entire board mounted on the board, and the test bus 40 for testing the state of the subscriber line through the test device.

Conventional electronic switch subscriber shelf boards, as described above, are used for each test item through a test device mounted on the back board to check when an error occurs in any subscriber line in the operation of matching subscriber lines. Performed a repair test and detected repair of the subscriber line through the result of the test item, and repaired and repaired it. After removing the subscriber cable of the subscriber board that accommodated the error line, After the subscriber board was removed, the test items for the error were tested by attempting a real call by connecting a telephone to the tip and ring terminals of the back board corresponding to the subscriber line where the error occurred.

The test apparatus of the conventional electronic switch subscriber shelf board as described above has a problem in that the service of the other subscriber line accommodated in the board is interrupted when the subscriber cable is removed to test any subscriber line in which an error occurs. All test buses are connected in common, so only one pressurizer can be tried on one shelf to test an abnormality of subscriber line through the test bus. There was a cumbersome problem to perform twice.

The present invention has been made in view of the above-described problems, and its object is to prevent interruption of service for call connection of another subscriber by any line error when an error occurs in any subscriber line subscribed to subscriber shelf board. In order to provide convenience for detecting abnormality of the subscriber line, the test is performed by attempting a call connection through the convenient connection of the telephone through the top and ring ends protruding from the outside.

A feature of the present invention for achieving the above object is to divide the subscriber line accommodated in one subscriber shelf board into two groups, connect the test buses into upper and lower sections, and connect the upper test bus and lower Connect the tip end and the ring end to the test bus so as to protrude to the outside, and then test the subscriber shelf of the electronic switchboard for convenient and simple call connection test of the error subscriber line through convenient connection of the telephone. Provide the device.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram of a circuit test apparatus for each subscriber shelf of an electronic switching system according to the present invention, and FIG. 3 is a diagram illustrating a test of an arbitrary subscriber line by connecting a telephone to a terminal protruding from the outside in the present invention shown in FIG. It is an illustration.

As can be seen in FIG. 2, the present invention provides a power board 10 for controlling the overall operation of supplying the operating power required for the entire board side mounted on the subscriber shelf board, and a plurality of connected to the electronic switchboard. A subscriber board 30 for connecting two subscriber lines, a control board 20 for controlling overall operations such as matching of each subscriber line connected to the subscriber board 30 and mutual matching between other boards, and a shelf board The test bus 40 is connected by dividing the subscriber line accommodated in the subscriber shelf board consisting of a wall board not shown, which connects the signal connection and power between the entire boards into an upper group (A) and a lower group (B). Then, the power board 10 is installed by protruding the tip terminal and the ring terminal connected to the test bus 40 of the upper group (A) and the lower group (B).

Referring to the test operation of any subscriber line in the present invention is configured as described above are as follows.

If an error occurs in any subscriber line subscribed to the subscriber shelf board, the operator of the electronic switchgear protrudes into groups of power boards 10 in order to test the state of any subscriber line in which the error occurs. As shown in FIG. 3 attached to the and ring terminals, when the test phones are connected to each other and the in-test relay driving signal is applied to any subscriber line to be tested for abnormality through the test phone, The corresponding test relay installed is connected to the switching contact by an applied signal. Then, when the operator attempts to connect the call through the test phone, the operator detects whether an error of any subscriber line occurs according to the success of the call connection.

After the test for any subscriber line is completed, the operator applies the in-test relay recovery signal to restore the subscriber line that performed the test through the test phone, and the contact of the relay to which the contact is connected is short-circuited to allow for normal call connection. Allow the action to be performed.

As described above, the subscriber line test for any subscriber having an error can be repeated for all subscriber lines according to the selection of the subscriber line through the test phone, and two test phones are connected to each subscriber shelf. A trial of the subscriber line can be performed by attempting sequential call connection to all subscriber lines, and the test of incoming and outgoing calls on the subscriber line can be simultaneously performed by attempting mutual call connection of test phone.

As described above, in the present invention, when an error occurs in a certain subscriber line, it is possible to test whether there is a problem with the subscriber line without removing the subscriber cable. The call connection test through the connection of A can virtually confirm the abnormality of the subscriber line, thus providing the reliability of the test of the subscriber line.

In addition, two subscriber lines can be selected in one subscriber shelf and mutual call connection can be performed to efficiently test incoming and outgoing subscriber lines.

Claims (1)

Power board 10 for controlling the operating power supplied to the entire board side to be mounted, subscriber board 30 for connecting a plurality of subscriber lines, and matching of each subscriber line connected to the subscriber board 30; In the subscriber shelf board consisting of a control board 20 for controlling the overall operation such as mutual matching between different boards, and a back board connecting the data signal and power between the entire boards mounted, And a test terminal for dividing the subscriber line of the subscriber board into a higher group and a lower group, and a telephone terminal provided at the power board 10 to be connected to the in test bus and to connect a test phone. A circuit test apparatus for each subscriber shelf of an electronic switching system.