WO2009000120A1

WO2009000120A1 - A narrow-band subscriber board bearing test function and a method for automatic test of subscriber line

Info

Publication number: WO2009000120A1
Application number: PCT/CN2007/003583
Authority: WO
Inventors: Huiyuan Song; Weihong Chen
Original assignee: Zte Corporation
Priority date: 2007-06-28
Filing date: 2007-12-13
Publication date: 2008-12-31
Also published as: CN101079920B; CN101079920A

Abstract

A narrow-band subscriber board bearing test function and a method for automatic test of subscriber line are provided. The narrow-band subscriber board comprises: a subscriber line module, for providing multiple subscriber lines, and providing narrow-band speech communication for the users; and a test module, for performing test of subscriber lines on the narrow-band subscriber board or external narrow-band board. The present invention can utilize the resources of system subscriber line thoroughly on the basis of cost system resources as few as possible, therefore, automatic test on the service of the subscriber line is achieved, and the fault can be located rapidly without overloaded manual operation, thus, the maintenance cost of the operating party is reduced.

Description

Narrowband users with test capabilities柘

TECHNICAL FIELD The present invention relates to the field of communications, and in particular, to a narrowband user board with a test function and an automatic test method for a subscriber line. BACKGROUND OF THE INVENTION Existing telecommunication network systems have significantly increased in size and complexity to meet different telecommunication requirements of different users. In the actual application, if there is a fault, whether it can locate the fault in time and minimize the harm and impact caused by the fault is very important for the telecommunication network system. In order to operate and maintain the system efficiently in such a complex environment, the telecom operator has established a centralized management and maintenance system in its service center to monitor the alarm signals transmitted by the transmission equipment distributed in the area of 4艮 wide. . If the report is faulty, the maintenance system will perform related tests based on the alarms and use the test results to locate problems in the system. As an important part of the telecommunication system, network maintenance provides efficient processing methods, which has brought great convenience to users and saved considerable expenses for telecom operators. However, in the maintenance of the existing telephone network, maintenance is very difficult due to the large number of subscriber lines and the lack of effective means for automatic fault detection. Some user circuit failures, usually after the telecommunications bureau receives a user complaint, can perform fault location analysis, and must use special test equipment to test. This kind of maintenance method is relatively inefficient. The dedicated test equipment occupies more system resources and is very passive. It cannot locate faults at one time, which is not conducive to improving user satisfaction. For example, in the existing detection of narrow-band user circuits, it is usually necessary to manually participate in the control of dedicated test equipment, and then through the instrument or meter to detect the parameters of the subscriber line one by one, in order to determine whether the various functions of the user circuit are normal, Fault location. This type of detection is inefficient and labor intensive, and it also increases the cost of operators. SUMMARY OF THE INVENTION In response to one or more of the above problems, the present invention provides a narrowband subscriber board having a test function. The narrowband subscriber board of the present invention comprises: a subscriber line module for providing multiple subscriber lines and providing a narrowband voice call for the subscriber; and a test module for testing the subscriber line of the narrowband subscriber board or the external narrowband subscriber board . The test module includes: a wire grabbing unit corresponding to the at least one subscriber line, a processing unit connected to the narrowband subscriber board, configured to perform line grabbing on the user line to be tested of the device under test; a conventional test unit, connected to The control unit of the device under test is used to test the internal line of the user, the external line of the user, and the state of the terminal phone, and test the AC voltage or DC voltage between the internal line of the user and the external line of the user, and determine whether there is a fault; the analog unit unit is connected to a control unit of the device under test, configured to provide at least one calling analog phone and at least one called analog phone, wherein the calling analog phone and the called analog phone are respectively connected to the user circuit to be tested and the subscriber line module a signal sound detecting unit connected to the control unit of the device under test for detecting an audio signal of the subscriber line module; a signal sound generating unit connected to the control unit of the device under test for generating an audio signal; and a billing detecting unit , connected to the control unit of the device under test, used to detect the line of the user to be tested Household users inside and outside of the polarity and charging signal. The detecting module further includes: a relay unit configured to connect the analog telephone unit to provide an analog telephone to the user line to be tested, and the signal generating unit, the signal detecting unit, the charging detecting unit, The conventional test unit is connected to the subscriber line to be tested. The detecting module further includes: a communication channel unit, configured to implement communication between the detecting module and the control unit of the device under test. The narrowband subscriber board is used as a normal narrowband subscriber board without testing. In the case of testing, the narrowband subscriber board tests the subscriber line thereon. In the case of testing, the narrowband subscriber board tests the subscriber line of the entire system. In the case of testing, the narrowband subscriber board performs joint service testing in conjunction with multiple subscriber lines thereon. The user line automatic test method of the present invention comprises the following steps: Step S202: setting a line number of the calling user to be tested and the called user to be tested, and performing line grabbing on the user line to be tested by the line grabbing unit; step S204, passing the routine test The unit detects the user internal line and the user external line of the subscriber line; in step S206, the analog telephone unit provides the calling analog telephone and the called analog telephone, and The calling analog telephone and the called analog telephone are respectively connected to the calling subscriber line to be tested and the called subscriber line to be tested; in step S208, the calling analog telephone picks up the phone and connects the signal sound generating unit and the signal sound detecting unit to the to-be-tested The called subscriber line; in step S210, the charging detecting unit detects the polarity of the user's inner line and the user's outside line of the user line to be tested and the charging signal, and the signal detecting unit detects the signal sound, and the signal sound generating unit generates the silent multi-frequency signal. Calling the called user; step S212, the called analog phone picks up the phone and connects another signal tone generating unit and the tone detecting unit to the called subscriber line to be tested; and in step S214, the charging detecting unit detects the calling party to be tested The polarity of the user's internal line and the user's outside line of the line, the signal tone detection unit of the calling subscriber line and the called subscriber line detect whether the signal tone during the call is correct, and verify whether the voice path is unblocked. Each test module on the narrowband subscriber board is connected to the subscriber line of the narrowband subscriber board or the external subscriber board through the test network. The invention can fully utilize the system user line resources under the premise of minimizing the system resource occupation, and can automatically detect the service condition of the user circuit and quickly locate the fault without manual intervention, so as to reduce the maintenance cost of the operator. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, 1 is a schematic diagram of a preferred embodiment of a narrowband user board with a test function according to the present invention; FIG. 2 is a flow chart of a preferred embodiment of the automatic test method of the present invention; and FIG. 3 is an automatic test subscriber line of the present invention. A flow chart of a preferred embodiment of the method. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings. In view of the problem that the automatic detection of the subscriber line service status cannot be realized in the prior art, the present invention integrates the test module on the narrowband subscriber board, and simulates one end of each of the main and called subscriber circuit connected to the TDM switching unit. The telephone is then simulated by the calling analog telephone through the signal tone generating unit. After detecting the ringing, the called analog telephone is off-hook and connected with the calling analog telephone. Interworking DTMF signals to simulate the detection of the entire call process. This can simulate the working process of the subscriber line call, automatically detect the user circuit without human intervention, and can automatically detect the fault. At the same time, the user circuit can be periodically detected to prevent the fault from occurring. At the same time, the subscriber line can be flexibly selected, and the subscriber line of the board can be self-tested or confronted. Test the user line of the user board for testing, which improves the reliability of the test. The present invention relates to an apparatus and method for both user line and test equipment, and more particularly to an apparatus and method for simultaneously providing a narrowband subscriber line in an access network (AN) and capable of testing all narrowband subscriber lines in the system. 1 is a schematic diagram of a preferred embodiment of a narrowband user board with a test function of the present invention. As shown in FIG. 1, the narrowband subscriber board with test function of the present invention includes: a subscriber line module (unit) 102, which provides a multi-user subscriber line for narrowband voice calls for ordinary users. The subscriber line unit 1 ~ N is composed of a codec CODEC and a subscriber interface circuit SLIC (Subscriber Line Interface Circuit) chip, and provides seven functions (BORSCHT) of the basic analog subscriber line circuit of the subscriber circuit, and realizes the user terminal and the TDM switching network. In this embodiment, the connection can be used for a normal user's voice call, and can also be used to connect an analog phone as a calling or called party. The test module 104 is used for testing the internal line, the outer line, and the service function of the subscriber line on the board and other user boards. The test module further includes: an analog telephone unit 104-2, a signal sound generating unit 104-4, a signal sound detecting unit 104-6, a thread catching unit 104-8, a conventional testing unit 104-10, and a billing detecting unit 104-12. Wait. The line grabbing unit is configured to perform line grabbing on the user circuit to be tested of the device to be tested. It is divided into the inner line and the outer line. It can be realized by relay. Grasping the inner line means forming a current loop with the central office and introducing the local terminal voltage; grasping the outer line means forming a loop with the user's telephone line. The conventional test unit is used to test the internal and external lines (A and B lines) of the user and the terminal phone. The i A and B lines are connected and the DC voltage is measured. It is judged whether there is a disconnection, a mixed line, or a lapped power line. The phone cannot Ringing and other failures. This module is tested by constant current source, A/D sampling, interface module, ringing module, for external equivalent resistance, capacitance, and transient response method. The analog telephone unit provides at least one calling analog telephone and at least one called analog telephone, and the calling analog telephone and the called analog telephone are respectively connected to the user circuit to be tested and the user circuit list. Yuan. The signal sound detecting unit is configured to detect an audio signal of the subscriber line module, such as a buzzer, a busy tone, a dial tone, a ring back tone, a DTMF, and the like. This module is composed of an interface circuit, an A/D converter and an encoder. The signal sound is converted into a digital signal by the signal sound detection module and output to the CPU. The tone generating unit is used to generate an audio signal such as a buzzer, a busy tone, a dial tone, a DTMF, and the like. This module is composed of a decoder, a D/A converter and a switching circuit. The sampling data of the desired audio analog signal can be generated by the CPU and output to the signal sound generating module, which is converted into an actual audio signal output. The charging detection unit is configured to detect the polarity of the A and B lines of the user circuit to be tested, and detect whether a 16 kHz or 12 kHz charging signal of a reverse polarity, 16 kHz or 12 kHz signal is generated after the called subscriber line picks up the call. The detection module further includes: a relay unit 104-14, configured to connect the analog telephone provided by the analog telephone unit to the user circuit to be tested, and the signal sound generating unit, the signal sound detecting unit, the billing detecting unit, and the routine The test unit is connected to the user circuit to be tested. Preferably, the detection module further includes: a communication channel 104-16 for communication between the detection module and the control unit of the skin detecting device.

The CPU is the main controller that controls the detection module. In order to achieve the purpose of automatic detection, and fully utilizing the existing subscriber line resources, the present invention also provides a method for automatically testing the subscriber line service function: Step S202, providing the narrowband subscriber board with the test function of the present invention, set to be Test the line number of the calling user and the called user (this board user, other users of the system). Step S204, the line grabbing unit performs line grabbing (measuring internal and external measurement), and connects the conventional test unit to perform internal line feeding of the user line, and the external line AC and DC voltage, insulation resistance, capacitance and the like are detected. Step S206, the analog telephone unit provides a calling analog telephone and a called analog telephone, and the calling analog telephone and the called analog telephone are respectively connected to the to-be-tested calling subscriber circuit and the to-be-tested called subscriber circuit. Step S208, the calling analog telephone is off-hook, and the signal sound generating unit, the signal sound detecting unit and the billing detecting unit are connected to the user circuit to be tested. Step S210, the charging detecting unit detects the charging signals of the A and B lines of the user circuit to be tested, the signal sound detecting unit is to detect the signal sound, and the signal sound generating unit generates the DTMF signal to dial the called user. Step S212, the called subscriber line is connected to the time division multiplexing switching unit, the called analog telephone is off-hook, and another signal tone generating unit and a signal tone detecting unit are connected to the called subscriber circuit to be tested. Step S214, the charging detecting unit detects the polarity of the A and B lines of the calling subscriber line to be tested, and the signal tone detecting unit of the calling and called subscriber lines detects whether the signal tone of the calling process is correct, interworks with the DTMF signal, and verifies whether the voice channel is verified. Unblocked. 3 shows the flow of a preferred embodiment of the automatic test subscriber line method of the present invention. The method specifically includes: Step S302: Receive a human-machine command of the automatic test subscriber line sent by the network management or the maintenance station, where the command includes the circuit number of the user to be detected for the calling party and the called party. According to S304, the line grabbing unit performs the line grabbing of the user circuit to be detected, and grasps the inner and outer lines at the same time. Step S306, providing a relay unit, through which the conventional test unit is connected to the captured external line of the user to be tested, and the conventional test unit performs an external line test. Step S308, connecting the conventional test unit to the internal line of the user to be tested, and performing a feed voltage test. Step S310, providing a relay unit, respectively connecting the two sets of analog telephone unit, the signal sound generating unit, and the signal sound detecting unit to the relay unit The calling and called subscriber circuits to be detected connect the charging detection unit to the calling subscriber circuit to be detected. Step butterfly S312, after the analog phone connected to the calling subscriber circuit to be detected is off-hook, at this time, the tone detecting unit connected to the calling user detects the dial tone. Step S314, generating a DTMF signal by the signal sound generating unit to perform analog dialing. After dialing the first number, the signal sound detecting unit detects whether there is a dial tone, and after detecting the number, detects whether there is a ring back tone, and connects to the called party user. The conventional detection unit of the line performs ringing voltage detection. Step S316, after the analog telephone connected to the called subscriber circuit to be detected is off-hook, the analog call is established, and the charging detection unit detects whether there is a reverse pole and other charging signals. Step S318, performing DTMF sending by the signal sound generating unit connected to the calling subscriber to-be-tested subscriber line, and connecting to the signal sound detecting unit of the called subscriber line to perform DTMF receiving, after receiving the specified number, and then connecting to The signal tone generating unit of the called subscriber line performs DTMF numbering, and the signal tone detecting unit connected to the calling subscriber to-be-tested subscriber line performs DTMF receiving. Step S320, the analog telephone connected to the called user to be tested is hung, and the signal sound detecting unit connected to the calling user to be tested detects the busy tone. Step S322, the analog phone connected to the calling user to be tested is hung up. In step S324, the subscriber line that has made the calling party is changed to the called party, and the called subscriber line is changed to the called party, and the test of steps S312 to S322 is performed. In step S326, the detection result is sent to the network management system or the maintenance station through the communication channel. It should be noted that, from step S312 to step S322, when any step is detected to confirm that a fault occurs, the test module directly jumps to step S324, and when step S324 is performed, when a fault is detected, step S326 is performed, and the fault is performed. The result is ^艮. This embodiment starts from the man-machine command that is automatically tested by the network management or the maintenance station to the test module. In practical applications, the maintenance personnel may issue a human-machine command through the network management or maintenance platform. Alternatively, a policy of periodically executing the human-machine command may be set on the network management or maintenance platform, so that the reverse polarity of the detected user circuit may be periodically detected. Function, timely recorded in the alarm log when a fault occurs. The invention can fully utilize the system user line resources under the premise of minimizing the system resource occupation, thereby automatically detecting the service condition of the user circuit and quickly locating the fault without manual intervention, so as to reduce the maintenance cost of the operator. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

Claim

1. A narrowband user board with a test function, comprising:

a subscriber line module for providing multiple subscriber lines and providing narrowband voice calls to the subscriber;

A test module is configured to test a subscriber line on the narrowband subscriber board or an external narrowband subscriber board.

The narrowband user board according to claim 1, wherein the test module comprises: a line grabbing unit corresponding to the at least one subscriber line, and a processing unit connected to the narrowband subscriber board, for The line of the user to be tested of the device to be tested is routed;

The analog test unit is connected to the control unit of the device under test, and is used for testing the internal line of the user, the external line of the user, and the state of the terminal phone, testing the AC voltage or the DC voltage between the internal line of the user and the external line of the user, and determining whether there is a fault;

The analog telephone unit is connected to the control unit of the device under test, and is configured to provide at least one calling analog telephone and at least one called analog telephone, wherein the calling analog telephone and the called analog telephone are respectively connected to the user to be tested. a circuit and the subscriber line module;

a signal sound detecting unit, connected to the control unit of the device under test, for detecting an audio signal of the subscriber line module;

a tone generating unit connected to the control unit of the device under test for generating an audio signal;

The billing detecting unit is connected to the control unit of the device under test, and is configured to detect the polarity of the user's internal line and the user's outside line of the user line to be tested and the charging signal.

The narrowband user board according to claim 2, wherein the detecting module further comprises: a relay unit, configured to connect the analog telephone unit to provide an analog telephone to the user line to be tested, and ^{1 The} signal generating unit, the signal detecting unit, the charging detecting unit, and the conventional testing unit are connected to the line of the user to be tested.

The narrowband user board according to claim 2, wherein the detecting module further comprises: a communication channel unit, configured to implement communication between the detecting module and the control unit of the device under test.

5. The narrowband subscriber board of claim 2, wherein the narrowband subscriber board is used as a normal narrowband subscriber board without testing.

6. The narrowband subscriber board of claim 2, wherein, in the case of testing, the narrowband subscriber board tests the subscriber line thereon.

7. The narrowband subscriber board of claim 2, wherein the narrowband subscriber board tests the subscriber line of the overall system in the event of testing.

8. The narrowband subscriber board of claim 2, wherein, in the case of testing, the narrowband subscriber board performs joint service testing in conjunction with a plurality of subscriber lines thereon.

A subscriber line automatic test method using the narrowband subscriber board according to any one of claims 1 to 8, characterized in that it comprises the following steps:

Step S202, setting a line number of the calling user to be tested and the called user to be tested, and performing line grabbing on the line of the user to be tested by the line grabbing unit;

Step S204: Perform, by using a conventional testing unit, a user internal line and a user line of the user line;

Step S206, the analog telephone unit provides the calling analog telephone and the called analog telephone, and connects the calling analog telephone and the called analog telephone to the to-be-tested calling subscriber line and the to-be-tested to be tested, respectively. Call the subscriber line;

Step S208, the calling analog phone goes off-hook and connects the tone generating unit and the signal tone detecting unit to the called subscriber line to be tested;

Step S210, the charging detection unit detects the polarity of the user's internal line and the user's external line and the charging signal of the user line to be tested, and the signal is generated by the detecting unit, and the signal sound generating unit generates a double tone. Frequency signal to dial the called user;

Step S212, the called analog phone goes off-hook and connects another signal tone generating unit and a tone detecting unit to the called subscriber line to be tested;

Step S214, the charging detecting unit detects the polarity of the user's internal line and the user's outside line of the calling subscriber line, and the signal line detecting unit of the calling subscriber line and the called subscriber line detects whether the signal tone during the call is detected. Correct, verify that the voice is clear. The subscriber line automatic test method according to claim 9, wherein each test module on the narrowband subscriber board is connected to the tested subscriber line on the narrowband subscriber board or an external board through a test network.