KR970010839B1 - Line test unit - Google Patents

Abstract

An unite for testing the subscriber line and telephone line wherein the said unite has an testing function and memory backup function at the same time and has a subscriber connecting part of each species through a test bus. The said unite enable to manufacture by the button and the switch easily in the condition of fixing the test unite.

Description

Test unit for subscriber line and telephone line test

The present invention relates to a test unit for testing a subscriber line and a telephone line, and intensively configures a test bus located at a connection part of various subscriber cards and anti-tamper jacks connected thereto in front of the test unit, and then uses a test device through the test unit. The present invention relates to a test unit implementation for testing voice and data subscribers in a fixed state.

The increase in subscriber demand and technological development of components and semiconductor devices has led to an increase in subscriber capacity per self of subscriber multi-devices, resulting in miniaturization of subscriber channel units and capacity increase in unit network subscribers.

Existing devices can be tested manually by inserting a tester with a separate jack for each channel unit for subscriber line test and call path test.

However, as the subscriber capacity per channel unit increases, accommodating test jacks for each subscriber of the channel unit is not only economical, but also appears to be a limiting factor in reducing the size of the unit for subscriber demand. It is very inconvenient for the operator because it has to be moved to every desired channel.

Therefore, economical and intelligent test methods are required.

In order to solve the above-mentioned problems, the present invention provides a test connection relay driver, various buffers, various decoders, a backup nonvolatile RAM, etc., which has a test function and a memory backup function. The purpose is.

It is another object of the present invention to select a subscriber who wants to perform a test by operating a button and a switch in a state in which both the end of the line and the end of the call are concentrated in the test unit through the test bus and the tester is fixed. There is.

1 is an overall block diagram of a test unit according to the present invention.

2 is a front schematic view of a test unit according to the present invention;

* Explanation of symbols for main parts of the drawings

1: test bus part 3: level converter

4: anti-search 5: I / O buffer

6: address buffer 8: RAM

9: Output buffer

In order to achieve the above object, the configuration of the test unit implemented in the present invention includes a test bus unit including a plurality of test patterns connected to the subscriber connection unit when each subscriber connection unit is connected, and a test apparatus according to the purpose to be tested. The anti-tamper jack, a test connection relay driver connecting the test bus unit and the anti-tamper jack, a level converter for matching a level of voice and data input through an external operating self, and input / output through a main controller in the transmission device I / O buffers for storing control signals, data, and addresses, address decoders for decoding addresses entered through the I / O buffers, and test connections for operating relays for selected channels when performing manual tests by the user. Operation data or performance monitoring items of the main controller input through the control wave and the I / O buffer RAM for storing a plurality of operation switches, a plurality of operation switches for selecting a test item and a channel to be tested, a display unit for displaying a state of a test unit according to the operation switch operation, and a channel unit and a channel number input through the operation switch. Characterized in that configured to include an output buffer.

The above objects, features, and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a test unit according to the present invention, which is mounted in a transmission unit for transmitting all information transmitted / received between an exchange and a subscriber, and a part of the test unit is shown in the transmission unit (not shown in the drawing). May be controlled by the entire control unit included in the control unit.

The configuration of such a test unit will be described. For example, a test pattern of each subscriber access unit is TR (T). A test bus section (1) having TR (R), TR 1 (T), TR 1 (R), E, M, 64k, and 8K, and a anti-tamper jack (4) for connecting a test apparatus according to the purpose to be tested; And a level for matching the level of voice and data input through a test connection relay driver 2 connecting the test bus unit 1 and the anti-tamper jack 4 and an external operating self (not shown). A converter (3), an I / O buffer (5) for storing control signals, data and addresses input / output through the main control unit in the transmission apparatus, and for decoding the address input through the I / O buffer (5). Operational data and performance monitoring of the main control unit input through the address decoder 6, the test connection control unit 7 for operating the relay of the selected channel when performing a manual test by the user, and the I / O buffer 5 RAM (8) for storing items, and switch for selecting channel unit and channel number during manual test (10), an output buffer (9) for storing the channel unit and channel number input through the switch (10), an indicator (11) for displaying the numbers stored in the output buffer (9), and a desired test Three-stage toggle switch 12 for selecting the channel and communication path of the subscriber channel or switching the normal state instead of the test state, the fault LED 13 indicating the fault state and abnormal state of the test unit, and the test of the corresponding channel. B) a three-stage switch 15 which is operated when a voice signal is to be tested using a test LED l4 indicating use and a D / A converter (not shown).

Unnumbered clock generators and AC / DC voltage converters provide the clock and voltage used in the test unit.

Wherein the anti-tam jack 4 includes a plurality of jacks of the same pattern as the test bus unit 1, which is T (tip), R (ring), T1, R1, E, M, 64K, 8K class to be.

In this case, when the test bus unit 1 and the anti-tamper jack 4 are connected in a signal manner, the voice signal is connected at the TTL level, and the data guard DSODP is connected in the bipolar form.

In addition, according to the user's needs, the external operating self is connected through the channel self and the back panel for analog and digital subscriber test.The connection level raised by the back panel in the test unit in the channel self is the TTL level and the data is RS422. Since it should be connected to the level, the test unit converts it using the level converter (3).

Referring to the operation of the test unit of the present invention configured as described above, when performing a manual test according to the user's needs, the user has three stages having a test in / test out / normal (IN / OUT / NORM) The switch 12 is operated to fix the switch in the position to be tested.

In this case, the normal state represents the normal state, not the manual test state. Therefore, place the switch in the IN or OUT position at the time of the manual test.

After the operation of the relay for selecting the line side and the call line side is performed, the user selects the channel unit and channel number to be tested through the switch 10 located at the front, and the selected numbers are output buffer 9. It is displayed numerically on the indicator 11 through. Then press the test switch and generate an interrupt. The main control unit receives this interrupt and reads the setting value of the unit and channel number to check whether the corresponding channel is already under test or in service, and if it is under test, generates a test LED through the output buffer (9) and not under test or service. If not, the relay of the selected channel is operated through the I / O buffer 5 and the test connection controller 7.

When the relay driver 2 is driven, the subscriber's line and the telephone line, which the user intends to test, are connected to the test apparatus through the anti-tamper jack 4 to perform various tests.

In addition, a three-stage switch 15 having an AD /./ DA state is mounted on the front of the test unit, so that AA transmission / reception tests of 2W and 4W audio data can be known, which includes data including a channel to be tested. After switching to the extra 2M stream without using the stream, you can select the channel you want to test using Co-Tack, and then test the audio signal using the D / A converter.

At this time, the data input from the trunk side is classified into DA, and the output data is classified into AD.

When the main controller of RAM 8 fails and backs up the operation data and performance monitoring data of the main controller, the main controller uploads the current data when the main controller restores.

The anti-tamper jack 4 is for inserting a tester. The first hole is the transmission data (+) (-) of the T, R / DS0-T / 64XN data service, and the second hole is the T1, R1 / DS0-R / 64XN data. Receive data (+) (-) of service, the third hole is the transmission timing (+) of E / OCU-T / 64XN data service, and the fourth hole is the transmission timing (-) of M / OCU-R / 64XN data service. The first hole is used as the reception timing of the 64k clock / 64XN data service and the sixth hole is used as the reception timing of the 8k clock / 64XN data service.

In addition, the anti-tamper jack 4 may write the first hole in the transmission mode and the second hole in the reception mode when the analog / analog test function is inserted in the test unit.

Also, in the 64XN data service test, the first hole is transmission data (+) (-) and the second hole is reception data (+) (-). The third hole can be used by switching to the transmission timing (+), the fourth hole to the transmission timing (-), the fifth hole to the reception timing (+), and the sixth hole to the reception timing (-).

On the other hand, the switch for selecting the channel unit and the channel number can select from 01 to 99 for the channel unit and from 1 to 9 for the channel number.

2 is a view schematically showing a light emitting diode and a display plate mounted on the front of the test unit as described above, wherein the front of the test unit shows a channel to be tested in the loopback test, in service, or in an operating self. A test LED (22) to indicate that it is being tested to avoid collisions when in operation, and a six-hole anti-tamper (28) for connecting the test unit and the test device during manual testing through the test device to measure voice or data cards And a three-stage toggle switch 26 for distinguishing a line, a line, a call path and a normal state, a three-stage toggle switch 29 for distinguishing output data from a subscriber side and an input data from a trunk side, and a channel unit to be tested ( pushbutton switch 24 for selecting channel unit number (CU.NO) and channel number (CH.NO) for selecting channel unit (CU.NO) Failure of the pushbutton switch 25, the indicator 23 for displaying the respective pushbutton switches 24, 25, the test pushbutton switch (TST) 27 for driving the relay of the selected channel and the test unit It is configured to include a fault LED (21) indicating that.

The process of performing the direct test using the display panel and the operation switch as described above and the LED operating conditions of the channel test are as follows.

1.In case of normal status (3-stage switch NORM) without test, self ID is displayed (CU number two digits are used)

2. In case of automatic test in the operating self, display channel unit and channel number under test

3. If the automatic test is completed, return to the above 1.

4. Display 0 when the 3-stage switch is set to IN or OUT for manual test.

5. Each time the channel select button is pressed at 0, the number increases by 1.

First LED cycles from 0 to 3

Second LED cycles from 0 to 9

Third LED cycles from 1 to 4

6. After the number is selected, press the test button to activate the relay.

-If you press the test button after CUNO selects 0 or 31 or more, or if you press the button by selecting 3 or 4 as the 3rd LED in case of 2-channel card, the relay operation is ignored and it returns to the above 4.

7. After one channel test, pressing the other channel selection button will change the value, but the relay will remain until the test button is pressed.

8. Relay operation with the channel selection value still maintained even if the 3-stage switch is changed for the OUT test after the IN test (periodic polling of IN / OUT information of the main control part)

9. If the 3rd switch is set to NORM during IN or OUT test, the relay returns to the above 1.

10. After the test, if the switch is set to NORM, the relay is released and the state returns to the above 1.

The following describes the operation to manually test the channel in the actual BMU in order.

Check if the status of the test unit is normal through the fault LED (21). Then check that the test LED 22 is lit, and toggle the selection switch (IN / OUT / NORM) 26 to the desired side by line and by telephone.

Then, the number of the channel unit is selected using the pushbutton switches 24 and 25, and then the channel number is selected, and the numbers are reconfirmed through the indicator 23.

Next, press the test button 27 to activate the relay of this selected channel. Finally, the tester is inserted into the 6-hole anti-tamper jack 28 allocated according to the channel type, and the desired test item is measured.

The present invention configured and operated as described above is applied to the test of the subscriber line and the telephone line, excluding the method of configuring the test line on the front of the existing channel unit, and constituting the test line of all the subscribers intensively in the test unit, Accordingly, it is very economical and easy to test by making it possible to test by a few switches while the test apparatus is fixed.

In addition, a preferred embodiment of the present invention is disclosed for the purpose of illustration, those skilled in the art will be able to make various modifications, changes, additions, etc. within the spirit and scope of the present invention, such modifications and modifications belong to the following claims You will have to look.

Claims (16)

The test bus unit including a plurality of test patterns connected to the subscriber connection unit at the test of each subscriber connection unit, a half probe jack for connecting a test apparatus according to the purpose of the test, and a test connection relay driver for connecting the test bus unit and the anti probe jack A level converter for matching the level of voice and data input through an external operating self, an I / O buffer for storing control signals, data and addresses input / output through a main controller in the transmission apparatus, and the I / O buffer. An address decoder for decoding the address input through the O buffer roll, a test connection control unit for operating the relay of the selected channel when performing a manual test by the user, and operational data and performance of the main control unit input through the I / O buffer. RAM for storing the monitoring items and a number of operating switches for selecting test items and channels to test And an output buffer for storing the channel unit and channel number inputted through the operation switch, and a display unit for displaying the state of the test unit according to the operation switch operation. Test unit. The apparatus of claim 1, wherein the operation switches and the display unit located in front of the unit test switch for selecting a channel unit and a channel number during a manual test, an indicator for displaying the numbers stored in the output buffer, and a line of a subscriber channel to be tested. And a three-stage toggle switch for selecting a call path or switching a normal state instead of a test state, a fault LED indicating a fault state and an abnormal state of a test unit, a test LED indicating a test or busy state of a corresponding channel, and a subscriber side. A test unit for subscriber line and call path testing, comprising: an AD /./ DA three-stage switch for distinguishing output data and data input from the trunk side. The subscriber line and the call of claim 1, wherein the test bus unit comprises test patterns T, R, T1, R1, E, M, E1, M1, 8k clock, and 64k clock. Test unit for furnace testing. The subscriber line and telephone test of claim 1, wherein the RAM backs up the operation data and performance monitoring data of the main control part when the main control part fails and the hernia is restored, and uploads the current data when the main control part is restored. Test unit. The method of claim 1, wherein the anti-tamper jack is for inserting a test device, the first hole is T, R / DSO-T, the second hole is T1, R1 / DS0-R, the third hole is E / OCU-T, The fourth unit is M / OCU-R, the fifth hole is 64k clock, and the sixth hole is 8k clock. The method of claim 1, wherein the anti-tamper jack is to insert a test device for the 64XN data service test, the first hole is the transmission data (+) (-), the second hole is the reception data (+) (-), the third hole is transmitted Timing (+), the fourth hole is the transmission timing (-), the fifth hole is the reception timing (+), the six holes can be used as the reception timing (-) Test for subscriber line and call path test Unit. The test unit according to claim 5 or 6, wherein the anti-tamper jack is used in two or more modes so that the use of the anti-tamper jack can be changed using relay switching. The test unit of claim 2, wherein the switch for selecting the channel unit and the channel number selects the channel unit from 01 to 99 and the channel number from 1 to 9. The test bus unit including a plurality of test patterns connected to the subscriber connection unit at the test of each subscriber connection unit, a half probe jack for connecting a test apparatus according to the purpose of the test, and a test connection relay driver for connecting the test bus unit and the anti probe jack A level converter for matching the level of voice and data input through an external operating self, an I / O buffer for storing control signals, data and addresses input / output through a main controller in the transmission apparatus, and the I / O buffer. An address decoder for decoding an address input through an O buffer, a test connection controller for operating a relay of a selected channel when a manual test is performed by a user, and operational data or performance of a main controller input through the I / O buffer. RAM that interferes with the monitoring items, and the channel unit and channel that is being tested or selected for testing. It consists of an output buffer that stores the number, but the front of the test unit has a switch for selecting a channel unit and a channel number for manual testing, an indicator for displaying the numbers stored in the output buffer, and the line and call of the subscriber channel to be tested. IN / OUT / NORM 3-stage toggle switch to select furnace, or to switch normal state, not test state, fault LED indicating fault state and abnormal state of test unit, data output from subscriber side, trunk side A test unit for testing subscriber lines and call paths, comprising: an AD /./ DA three-stage switch for distinguishing input data and a test LED indicating a test or busy state of a corresponding channel. The test for relay operation according to claim 9, wherein the IN / OUT / NORM three-stage switch is changed to a test mode other than NORM in a state where the IN / OUT / NORM three-stage switch is set to TEST IN or TEST OUT once. Test unit for testing the subscriber line and the telephone line, characterized in that automatically switched without the operation of the switch. The method of claim 9, further comprising: checking whether the test unit is in a normal state through a fault LED, checking whether the test LED is lit, and selecting a line and a call selection switch (IN / OUT / NORM three-stage switch). Toggling the side, selecting the channel unit number and channel number using the pushbutton switch, checking the indicator, and pressing the test button to activate the relay of the selected channel. Test unit for testing the subscriber line and telephone line characterized in that the tester is inserted into the hole anti-tamper jack to measure the desired test items. The subscriber line and telephone test of claim 9, wherein the RAM backs up the operation data and performance monitoring data of the main control part when the main control part breaks down and loses, and uploads the current data when the main control part is restored. Test unit. The method of claim 9, wherein the anti-tamper jack is for inserting the test device, the first hole is T, R / DS0-T, the second hole is T1, R1 / DS0-R, the third hole is E / OCU-T, The fourth unit is M / OCU-R, the fifth hole is 64k clock, and the sixth hole is 8k clock. 10. The test unit of claim 9, wherein the anti-tamper jack writes the first hole as the transmission mode and the second hole as the reception mode when the analog / analog test function is inserted in the test unit. The test unit of claim 9, wherein the switch for selecting a channel unit and a channel number selects a channel unit from 01 to 99 and a channel number from 1 to 9. 11. 10. The subscriber line and call path test of claim 9, wherein the test bus unit comprises test patterns T, R, T1, R1, E, M, E1, M1, 8k clocks, and 64k clocks. Test unit.