KR920008759B1 - Operation status test method of general-purpose signal transmission / reception circuit pack using test device - Google Patents

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Description

Operation status test method of general-purpose signal transmission / reception circuit pack using test device

1 is a block diagram of a test autonomy for testing of the present invention.

2 is a table showing functions and contents for each configuration bit of the status display register of the present invention.

Figure 3 is a table showing the functional mode information of the general-purpose signal transmission and reception circuit pack of the present invention in the form of data.

4A and 4B are charts each showing a data type for designating a short consumption group of an audible signal tone of the present invention and a data type for indicating a service ratio group in service.

5 is a flowchart illustrating an operation state test process according to the present invention.

The present invention provides a signal service device for an electronic exchange, comprising: a general-purpose signal transmission / reception circuit pack having all signal service functions such as an R2 MFC (Multi-Frequency Compelled) signal, a Dual Tone Multifrequency (DTMF) signal, a continuity beep and an audible beep. It is for testing Universal Signaling Transceiver Assembly (hereinafter referred to as USTA), and in particular, it relates to a method for testing the operation state of a general-purpose signal transmission and reception circuit pack to check the operation state using a test apparatus. USTA which performs both R2 MFC signal, DTMF signal, and continuity test signal transmission / reception function among the beep transmission / reception mode service function, audible signal transmission mode service function, standby mode service function as well as beep transmission / reception mode service function. In order to check whether the operation is performed qualitatively, it was checked whether each accessory was properly configured. Accordingly, the present invention relates to a method of testing the operating state of the USTA using a test device to check the normality of the USTA using a simple test device.

Referring to the present invention in detail based on the accompanying drawings as follows. FIG. 1 shows the configuration of the test apparatus. The DC / DC converter 1 provides a stable power supply (+ 5V) to the test apparatus, and six USTAs (2), (2a), (2b), and (2c). And (2d), (2e), a clock generator (3) for supplying a clock frequency of 2.048MHZ and a frame synchronization (FS), which is a synchronization signal of 8KHZ, necessary for the operation of the USTA, and various functions of the signal service device. Peripheral Processor Control Assembly (PPCA) (4) for configuring a Local Service Processor (LSP), a processor, and Peripheral Processor Infterface Assembly (PPIA) (5) with a built-in test program ROM (ROM). It is made up.

Therefore, check the operation status using the status display register and run flag inside the USTA to be tested, and in particular, access the status display register of any function mode and read the contents of the corresponding status display register. Check the operation status of the USTA.

The inspection method of the USTA according to the present invention is as shown in FIG. Referring to Figure 5 describes the operation of the present invention in detail as follows.

First, the test to check the UST's Telephony Device-bus (TD-bus) selection function, the USTA and the two LSPs are interconnected through the TD-bus, the USTA operates under the control of one designated LSP In this case, when the LSP controlling the corresponding USTA fails, the other LSP controls the USTA, so that the PPCA (4) and PPIA (5) constituting the LSP of the test apparatus are in a broken state ( 5, see Figure 6) UST's TD-bus failure light emitting diode is turned on (ON) it is possible to know the selection function of the TD-bus.

Therefore, if the TD-bus faulty LED does not grow, the TD-bus selection function is normally performed, and the following operating state monitoring function test is performed (see 7 in Fig. 5).

In step 7, if the TD-bus faulty LED becomes large, the TD-bus selection function is determined to be abnormal, and after repairing or replacing the corresponding USTA (see 18 in FIG. 5), perform the TD-bus selection function test again. .

If the USTA's TD-bus selection function is normal, the operation status monitoring function is checked. In this test, the contents of the status display register in the USTA are read using the mode bits on the TD-bus, and the contents are examined bit by bit. If it is '0' it is normal and if it is '1' it is found to be abnormal (see 8, 9 in Fig. 5).

The meanings of the functions and contents for each configuration bit of the status display register are as shown in FIG. 2. The functions from the first bit B0 to the fifth bit B4, respectively, correspond to the state of the sub-high way interface. Indicates the time division switch loopback test state of the audible signal, the operation state of the control unit, the operation state of the receiver, and the operation state of the transmitter.

However, the sixth bit (B5) to the eighth bit (B7) represent the beeper transmission / reception function states serving the functions of the R2 MFC signal, the DTMF signal, and the continuity beeper, and the audible sound transmission function state, respectively. The bit is set to '1'.

If the USTA's operating status monitoring function is found to be normal (Yes in Fig. 9), a test tone is performed to check the restart function.In this test, the LSP monitors the USTA's operating status and is abnormal. In this case, it resets the corresponding SHW by using the mode bit on the TD-bus. Therefore, if you reset the USTA to be tested one by one, it checks that the reset LED of the USTA is on. 10, 11 of 5 degrees).

In the test for checking the function mode service group change function of the USTA, the function mode service group (R / D) of the USTA is controlled according to the information specified in the common input / output RAM control area in the USTA by the control of the LSP. / C: sets R2 MFC / DTMF / Continuity check tone, audible tone and standby mode service group), and checks whether the function mode service group of the standby USTA is changed to another functional mode service group normally. (See 12, 13 in Figure 5).

Therefore, as shown in FIG. 3, data D0 and D1 denote SHW information, data D3 and D4 denote channel group information, and data D5 and D6 denote operation mode service group R. / D / C, audible tone, and standby mode service group information, respectively, while setting the USTA to be checked in various states, operating while observing the status of the LED and the status display register indicating the corresponding functional mode. You can check whether the mode has been changed.

If normal operation is found in the above operation mode change test, a test for checking the SHW change function of the USTA is performed. In this test, the time division switch and the interworking are performed according to the information specified in the common I / O RAM control area in the USTA by the control of the LSP. It selects one of four interworking SHWs and checks the normal operation of the SHW change function of the USTA operating as the standby function mode service group (see 14 and 15 of FIG. 5).

Therefore, as shown in FIG. 3, SH1 for RDCs 1 and 2 and 3 for audible sound while changing the values of the function mode information data D0 and D1 from 0, 1 to 1, 1 One of the SHW is selected, and it is applied to the USTA to check and check whether the SHW selection data is normally output by measuring the output port connected to the SHW using an oscilloscope.

Lastly, the SHW change function check test was found to be normal, and the inspection function of the intermittent ratio group change function of the audible tone was also checked. In this test, the LSP also beeps at one of the common I / O RAM transmission areas in the USTA where the audible tone is serviced. When sending the control ratio group information, the USTA provides the control ratio group of the corresponding beep according to the information specified from the LSP, and the information on the control ratio group of the signal being serviced is located in the address area of the common I / O RAM. To inform the LSP by using (see 16, 17 in Figure 5).

Therefore, as shown in FIG. 4, the data (D0) and (D1) in which the intermittent ratio of the audible tones in the transmission area of the common I / O RAM designates a group change from 0, 0 to 1, 0. Therefore, data of group A, group B, and group C, respectively, and the group of interruption ratios being serviced in the receiving area of the common I / O RAM (D0), (D1) from 0, 0 to 1, 0 In order to determine whether or not the USTA providing audible tones is normally selected and controlled by using the group A, B, and C groups, the contents of the receiving area of the common I / O RAM are changed to LSP. You can check it by reading it or measuring the output port with an oscilloscope. At this time, if the test results are normal, the test is terminated because all functions of the USTA are normally performed (see 19 in FIG. 5).

As described above, according to the present invention, there is an advantage in that the operation state of the USTA can be checked through a simple test apparatus without having to check each component in order to confirm whether the operation of the USTA is normally performed.

Claims (4)

A method of testing an operating state of a signaling service device for an electronic exchange, comprising: checking a function of selecting one of a redundant TD-bus used as a communication bus between an LSP and a USTA, and using the contents of a status register in the USTA; Checking the operating state monitoring function of the USTA, checking the restart function of the USTA using the mode bits of the TD-bus, and checking the operation mode changing function of the USTA under the control of the LSP. And checking the SHW change function according to the control of the LSP, and checking the audible sound control ratio group change function of the USTA under the control of the LSP. If abnormality is found, repair or replace the USTA, and repeat the test steps until all operating functions of the USTA are found to be normal. Operating state test method of a general-purpose signal transmission and reception circuit pack using the test device, characterized in that for performing. The method of claim 1, wherein the step of checking the TD-bus selection function is performed by inspecting whether the TD-bus is broken and operating the light emitting diode after making the PPCA (4) and the PPLA (5) of the test apparatus fail. General-purpose signal transmission and reception circuit pack operating state test method using a test apparatus comprising a. The method of claim 1, wherein the checking of the USTA operation state monitoring function comprises: checking the contents of the register bit by bit, and when the contents of the status register is '0', it is determined as a normal state, and if it is '1' Operation state test method of a general-purpose signal transmission and reception circuit pack using a test apparatus comprising the step of determining. The method of claim 1, wherein the checking of the SHW change function comprises selecting one of the first and second SHWs for the RDC and the third and second SHWs for the audible tone, and then connecting to any of the USTAs. And changing the value of D1 from '00' to '11', and measuring whether the function mode information data is normally output by measuring the output port to which the SHW is connected. Method of testing the operation status of the signal transmission and reception circuit pack.

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