CN1738260A

CN1738260A - User circuit analogy interface index automatic test system and test method

Info

Publication number: CN1738260A
Application number: CN 200410055317
Authority: CN
Inventors: 杨松; 胡毅; 张焱
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2004-08-18
Filing date: 2004-08-18
Publication date: 2006-02-22
Anticipated expiration: 2024-08-18
Also published as: CN100372314C

Abstract

The invention discloses an automatic testing system of customer circuit analogue interface property, comprising: a customer frame, a Z-cut property tester and a protocol testing card which are connected to the customer frame, and a computer connected to the Z-cut property tester and the protocol testing card. Said testing system utilizes the cooperation between the apparatus of Z-cut property tester and the protocol testing card which are controlled by computer to complete the interface property testing of analogue interface. The invention also discloses a automatic testing method of customer circuit analogue interface property.

Description

Subscriber line circuit analog interface index automatic test system and method for testing

Technical field

The present invention relates to the measuring technology of communication equipment, relate in particular to a kind of subscriber line circuit analog interface index automatic test system and method for testing.

Background technology

Carry out the interface index test of user's plate at present, at first need to carry out the data configuration of switch, comprise the data configuration that carries out analog subscriber port, the digital interface of analog subscriber port and switch semipermanent is connected etc., then the corresponding interface of simulation mouthful index test instrument is connected on the digital interface of the analog interface of user's plate and switch, the respective selection of index test instrument is set again, carries out the test of interface index and the hand-kept of data.In the time will surveying next port, need reconnect to corresponding subscribers feeder on the analog interface of index test instrument, repeat test, record then.Because the quantity many (as 16 or 32) of port, cause the repeatability of testing greatly, efficient is low.

Summary of the invention

The invention provides a kind of subscriber line circuit analog interface index automatic test system and method for testing, to improve testing efficiency and to reduce the repetitive work amount.

Realize technical scheme of the present invention:

A kind of subscriber line circuit analog interface index automatic test system comprises:

Subscriber frame includes test bus, is used to carry tested user's plate;

Z mouth index test instrument is connected with the test bus of described subscriber frame by analog interface;

Computer installation is connected with described Z mouth index test instrument, issues parameter and control command to described Z mouth index test instrument;

The protocol test card is connected with described computer installation, tester and subscriber frame respectively, level and/or agreement between conversion testing instrument and computer installation and the tested user's plate.

A kind of subscriber line circuit simulation mouthful index automatic test method comprises the steps:

(1) control program on the startup computer installation is selected tested user board port and configuration testing project;

(2) by described control program transmitting order to lower levels, control user plate switches to test bus with tested user board port and carries out user's plate hight speed channel interface level and the conversion of Z mouth index test instrument interface level to be connected to Z mouth index test instrument and control;

(3) described control program control index test instrument is tested the test event of configuration, and preserves test result;

(4) judge whether to test all user board port that are provided with in the step (1), if then stop test; Otherwise, select next user board port and change step (2).

The present invention can realize the automatic test of Plain Old Telephone Service mouth index, has reduced the manual intervention in the test process, has improved testing efficiency, thereby the tester is freed from uninteresting, the loaded down with trivial details operation of index test.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a test flow chart of the present invention.

Embodiment

Consult shown in Figure 1ly, test macro comprises computer installation, Z mouth index test instrument (PCM4), protocol test card (PTC) and subscriber frame.This test macro is finished the interface index test of simulation mouth by control PCM4 instrument and the common cooperation of PTC by computer.

Subscriber frame provides test bus, serial bus, high-speed channel (HW) bus, user's plate power supply etc. as the equipment of carrying measurand user plate.

PCM4 finishes the interface index test function of analog subscriber interface as test instrumentation.PCM4 connects on the test bus of subscriber frame by analog interface, and its purpose is each analog subscriber port is tested the automatic switchover port, and does not need manual port switching.

Computer is the control appliance of testing, and issues control command and parameter to PCM4, and PCM4 tests with control, read test result again after test finishes.Because PCM4 is merely able to provide the control interface of IEEE488,, make operation software on computers to control PCM4 by the IEEE488 interface so general-use bus card (GPIB card) is installed on computers.

PTC is connected with the network interface of computer by Ethernet interface, is connected with serial ports on the subscriber frame by serial ports, is connected with the digital interface of PCM4 by the E1 interface, is connected with HW interface on the subscriber frame by the HW interface.PTC mainly provides level conversion, serial port protocol conversion etc.

Because the HW line in the subscriber frame is a Transistor-Transistor Logic level, and the interface of PCM4 is the HDB3 level, therefore carry out the conversion of level by PTC.In fact, in the protocol test card, done exchange process one time, exchanged to the E1 interface from the HW interface of PTC.In PTC, HW interface and E1 interface are received the exchange chip of 256 * 256 capacity respectively, realized the time gas exchange of HW interface to the E1 interface by the control of the CPU among PTC exchange chip.Therefore, actually in test this function of PTC has been used as a level translator has used.

In addition,, can not directly receive on the RS232 serial ports of computer, and PTC provides the serial bus that is exclusively used in subscriber frame of Transistor-Transistor Logic level to connect, and therefore, the serial bus of subscriber frame is received on the PTC because the serial bus in the subscriber frame is a Transistor-Transistor Logic level.Like this, survey bus in issuing orders just can for user's plate in the subscriber frame user board port of needs test linked by serial ports, link to each other with the analog interface of PCM4 then.Promptly issue orders and to transmit to user's plate by the serial ports of protocol test card to user's plate.

It is as follows to consult testing process shown in Figure 2, concrete:

Step 1, connect each equipment by Fig. 1 after, start the automatic test control program on the computer;

Step 2, the slot number that tested user board port is set in program interface and port numbers can be provided with one or more, each 32 port of 19 blocks of user's plates can be set at most in the present embodiment carry out the test of interface index one by one, and 19 * 32 ports can be set altogether.

Step 3, the test event that need carry out is set in program interface, one of the following project of optional test event or multinomial (annotate: all tested ports that are provided with in aforementioned all carry out the test of these test events):

The input relative level, the output relative level, input connects gain and changes with level, output connects gain and changes with level, input junction loss frequency distortion, output junction loss frequency distortion, terminal balance return loss, input connects group delay, output connects group delay, input connects group delay distortion, output connects group delay distortion, the carry input terminal external signal is differentiated, the output out of band signal is differentiated, input connects weighted noise, output connects weighted noise, input connects total distortion and is connected total distortion (these projects all are the test events that GB requires) with output.

Step 4, startup test, switch to the interior bus of surveying by control program transmitting order to lower levels control user plate corresponding port, and survey bus in this moment with on the analog interface through having received the index test instrument, therefore also just equivalence on the analog interface that this user port has been connected to the index test instrument.The order that issues is by the Ethernet interface control PTC of computer, and PTC sends control messages to user's plate again, reaches the purpose of computer controlled user plate.

Step 5, control program control PTC connect the time slot of PTC inside, with reach the time gas exchange on the user's plate hight speed passage (HW) on the corresponding time slot of the E1 of PTC (because this part has nothing to do with test itself, therefore need not configuration data, only need connect time slot one by one get final product).

The test of the test event of configuration during step 6, control program undertaken steps 3 by IEEE488 interface control index test instrument, the read test result also is saved in the database.

If selected a plurality of test events, then control program control tester is finished each test event.

Step 7, judge whether to test in the step 2 all user board port that are provided with,, then carry out step 8,, then select next user board port and go to step 4 if also ports having is tested if all the user board port that will test has been tested and finished.

Step 8, control program are inquired about all test results according to user-defined condition in database, and show by the mode of figure, or directly export test report.

Obviously, those skilled in the art can carry out various changes and modification to method of the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims

1, a kind of subscriber line circuit analog interface index automatic test system is characterized in that described system comprises:

Subscriber frame includes test bus, is used to carry tested user's plate;

2, the system as claimed in claim 1 is characterized in that, described computer installation includes general-use interface bus (GPIB) card, described tester by IEEE488 interface and this GPIB card be connected.

3, system as claimed in claim 1 or 2, it is characterized in that, described protocol test cartoon is crossed Ethernet interface and is connected with the network interface of computer installation, be connected with high-speed channel interface with serial ports on the subscriber frame by serial ports and high-speed channel interface, be connected with digital interface on the tester by the E1 interface.

4, a kind of subscriber line circuit simulation mouthful index automatic test method is characterized in that comprising the steps:

(1) control program on the startup computer installation is provided with tested user board port and configuration testing project;

5, method as claimed in claim 4 is characterized in that, this method also comprises step:

(5) control program is inquired about all test results and output according to user-defined condition in database.

6, as claim 4 or 5 described methods, it is characterized in that, in the step (2), by the time gas exchange on the high-speed channel of user's plate is realized interface level and the conversion of Z mouth index test instrument interface level on the corresponding time slot of E1 interface.

7, method as claimed in claim 6 is characterized in that, in the step (2), re-sends to user's plate after the advanced line level conversion of the order that control program is issued.