KR100805623B1 - The Test Method for ADSL Fault Management System - Google Patents

Abstract

The present invention relates to a test method of an ADSL failure handling system that is connected to an Asymmetric Digital Subscriber Line (ADSL) device operating system and a NAS (Network Access Server) device operating system by a TCP / IP network to check for an ADSL failure. More specifically, a first step of defining the test interval 1 between the subscriber's ADSL modem and the ADSL service providing apparatus and the test interval 2 between the NAS and the ADSL service providing apparatus; the test interval through the ADSL device operating system A second step of testing and inspecting the subscriber line status of 1, the port status and the status of the ADSL modem; If the test and inspection in the second step is normal, and if it is normal, test and check the state of the Asynchronous Transfer Mode (ATM) Operation And Maintenance (OAM) loopback cell of the test section 1 between the ADSL modem and the ADSL service providing apparatus. A third step of doing; A fourth step of performing a test and inspection in the third step and inquiring of a failure state of the NAS through the NAS device operating system if normal; And a fifth step of performing an ATM OAM loopback test and inspection of the test section 2 through the ADSL device operating system if normal by performing the test and inspection in the fourth step. It starts.

ADSL, fault, NAS, algorithm, cell loopback

Description

Test Method for ADSL Fault Management System             

1 is an exemplary view showing the configuration of the ADSL failure handling system and ADSL immediate test section to which the present invention is applied,

2 is a conceptual diagram schematically showing the configuration of each test section of the ADSL immediate test to be performed by the ADSL failure handling system according to an embodiment of the present invention,

3 is a flowchart illustrating a failure determination method for each test according to an exemplary embodiment of the present invention.

※ Explanation of code about main part of drawing ※

101: operator 102: ADSL failure handling system

103: NAS device operating system 104: ADSL device operating system

105: Internet network 106: NAS

107: ADSL service providing device 108: ADSL modem

109: ADSL terminal

The present invention relates to a test method for an Asymmetric Digital Subscriber Line (ADSL) failure handling system, and more particularly, to an operation system and a TCP / IP (Transmission) system of an ADSL device and a NAS (Network Access Server) device constituting an ADSL subscriber network. Control Protocol / Intent Protocol) It is a test method of ADSL fault handling system that can check ADSL failure between subscriber modem and ADSL device and between ADSL device and NAS device.

Conventionally, since there is no fault handling system that integrates test results of each system forming ADSL subscriber network to determine whether there is an ADSL failure, the department in charge can estimate the cause of failure for each section. Each individual test was carried out, and the cause of the failure could be determined only when the communication between the respective departments was conducted smoothly. In the department in charge, it takes time for the person in charge to obtain the proficiency and data to determine the cause of the failure, but the cost and time for cultivating the manpower is automatically determined by using the failure determination algorithm proposed by the present invention. Can be reduced.

An object of the present invention for solving the problems of the prior art as described above is an ADSL service failure interval and cause estimation immediately test method integrating one test for each failure interval and cause determination for each section during ADSL failure processing It is to provide.

In order to achieve the above object, according to the present invention, in the test method of the ADSL failure handling system to check whether the ADSL failure is connected to the ADSL device operating system and NAS device operating system and TCP / IP network to check for ADSL failure, A first step of defining and defining a test section 1 between the ADSL service providing apparatus and a test section 2 between the NAS and the ADSL service providing apparatus; A second step of testing and inspecting a subscriber line state, a port state, and a state of the ADSL modem through the ADSL device operating system; If the test and inspection in the second step is normal and normal, the Asynchronous Transfer Mode (ATM) Operation and Maintenance (OAM) Loopback cell state of the test section 1 between the ADSL modem and the ADSL service providing apparatus is determined. A third step of testing and inspection; A fourth step of performing a test and inspection in the third step and inquiring of a failure state of the NAS through the NAS device operating system if normal; And a fifth step of performing the test and inspection in the fourth step and performing an ATM OAM loopback cell test and inspection of the test section 2 through the ADSL device operating system if it is normal. Initiate.

Hereinafter, the ADSL immediate test method according to an embodiment of the present invention with reference to the accompanying drawings will be described in more detail.                     

1 is an exemplary view showing a configuration of an ADSL failure processing system and an ADSL immediate test section to which the present invention is applied.

First, the ADSL failure handling system 102 to which the present invention is applied is connected to the ADSL device operating system 104 and the NAS device operating system 103 by a TCP / IP network, and the ADSL service providing device 107 and the NAS ( 106 is connected to the respective operating systems 103 and 104. In addition, the ADSL modem 108 is connected to the ADSL terminal 109 of the customer to provide the ADSL service to the customer, and the NAS 106 is connected to the Internet network 105.

The NAS 106 is a type of authentication system for connecting an authenticated customer to the Internet.

The ADSL fault handling system 102 is a system having an ADSL immediate test function proposed by the present invention, and the ADSL immediate test interval proposed by the present invention is divided into a test interval 1 and a test interval 2, as shown in FIG. The test section 1 is a section between the ADSL modem 108 and the ADSL service providing apparatus 107, and the test section 2 is a section between the ADSL service providing apparatus 107 and the NAS 106.

The reason for dividing the test section into test section 1 and test section 2 is as follows. The individual devices that make up the ADSL subscriber network consist of an ADSL subscriber modem, an ADSL terminal, and a NAS. In addition, the ADSL subscriber network frequently fails. Therefore, it is efficient to divide the test and inspection sections into sections between the subscriber's ADSL modem and the AADSL service providing device and between the ADSL service providing device and the NAS to find out the cause and the section of the failure. In addition, since there was no failure management system that can be connected to the ADSL service providing device and the NAS at the same time to perform tests and inspections, the department accommodating the ADSL service providing device and the department accommodating the NAS had to be tested separately. As it was not possible to do it accurately, it took a lot of time and money to handle ADSL failures. Therefore, we have an integrated failure management system that can simultaneously link the ADSL service provider and the NAS, and a test algorithm that can determine the cause of each failure. The invention proposes.

2 is a conceptual diagram schematically showing the configuration of each test section of the ADSL immediate test to be performed by the ADSL failure handling system according to an embodiment of the present invention.

In the test section 1, a performance test for querying the line state, the port state, and the state of the ADSL modem on the subscriber side is performed through the ADSL device operation system 104 of FIG. 1 (201). In addition, an ATM OAM (Operation And Maintenance) cell that tests and inspects a link state of an Asynchronous Transfer Mode (ATM) layer between subscriber ports in test interval 1 between the subscriber ADSL modem 108 and the ADSL service providing apparatus 107. A test is performed to query the ATM link status (204).

In the test section 2, the NAS device operating system 103 is inquired and tested for a failure state of the NAS 106 (203). In addition, the ADSL device operating system 104 performs an ATM OAM loopback cell test for checking the ATM link status of the test interval 2 or a test for querying the ATM link status (204).

3 is a flowchart illustrating a failure determination method for each test according to an exemplary embodiment of the present invention. This will be described in detail as follows.

First, through the process of the performance test 201 shown in FIG. 2, in step S301, it is determined whether the test result is OK or NOK. If NOK, in step S302, a 'performance test failed' message is output on the screen. Then exit.

If the determination result in step S301 is OK, in step S302, the link state is determined among the test result parameters.

If the determination result in step S302 is 'False', the subscriber port state is determined in step S303. If normal, in step S304, 'service unused' is output on the test screen, and the test ends.

If the determination result in step S303 is not normal, in step S305, the subscriber port state is output on the screen, and the test is finished.

On the other hand, if the link state is 'True' as a result of the determination in step S302, in step S306, an up-down SNR margin is greater than x dB, which is a predetermined minimum SNR guarantee value for smoothly providing the ADSL service. Determine if it is small.

As a result of the determination in step S306, if the up-down SNR margin is less than x, in step S307, the line noise is greater. 'Please check the line environment' message on the screen and exit.

As a result of the determination in step S306, if the up-down SNR margin is not less than x, it is determined in step S308 whether the up-down attenuation rate is equal to or greater than a predetermined y dB.                     

As a result of the determination in step S308, if y dB or more, the test is terminated after outputting the "greater line attenuation rate" in step S309.

As a result of the determination in step S308, if not greater than y dB, the cell loopback test is performed to the subscriber side. This corresponds to reference numeral 202 shown in FIG.

Thereafter, in step S310, it is determined whether the cell loopback test result is OK or NOK.

If the determination result in step S310 is NOK, in step S311 the message "subscriber-side ATM link failure, reset required" is output, and then ends.

If the determination result in step S310 is OK, NAS status inquiry is performed. This corresponds to reference numeral 203 shown in FIG.

After that, in step S312, it is determined whether the NAS state test result is normal or abnormal, and if abnormal, outputs a 'NAS failure', and then the test is finished.

If the determination result in step S312 is normal, the ADSL service providing apparatus 107 performs a cell loopback test or ATM link status inquiry to the NAS 106 side. This corresponds to reference number 204 of FIG. 2.

Then, in step S314, it is determined whether the network cell loopback test or the ATM link state test result is OK or NOK.

If the determination result in step S314 is NOK, then in step S315, the network ATM link failure. End the test after printing 'require ATM connection reset between NAS and DSLAM'.

As a result of the determination in step S314, if OK, in step S316, a 'try to perform port reset' is output, and the test ends.

While the invention has been described above based on the preferred embodiments thereof, these embodiments are intended to illustrate rather than limit the invention. It will be apparent to those skilled in the art that various changes, modifications, or adjustments to the above embodiments can be made without departing from the spirit of the invention. Therefore, the protection scope of the present invention will be limited only by the appended claims, and should be construed as including all such changes, modifications or adjustments.

As described above, according to the present invention, in the case of ADSL failure processing, the individual tests for failure section and cause determination for each section are immediately integrated into one test to reduce the time for failure processing, and to allow the operator to easily determine the failure section and cause. It has the effect of improving the quality of customer response service and the efficiency of troubleshooting.

Claims (4)

Test method of ADSL failure handling system that checks ADSL failure by connecting Asymmetric Digital Subscriber Line (ADSL) device operation system and Network Access Server (NAS) device operation system to Transmission Control Protocol / Intent Protocol (TCP / IP) network. In A first step of separately defining a test interval 1 between the subscriber's ADSL modem and the ADSL service providing apparatus and a test interval 2 between the NAS and the ADSL service providing apparatus; A second step of testing and inspecting a subscriber line state, a port state, and a state of the ADSL modem through the ADSL device operating system; A third step of testing and inspecting a state of the Asynchronous Transfer Mode (ATM) Operation And Maintenance (OAM) loopback cell of the test section 1 if the test and inspection in the second step are normal; A fourth step of testing and inspecting a state of a failure of the NAS through the NAS device operating system if the test and inspection in the third step are normal and normal; And And a fifth step of testing and inspecting the ATM OAM loopback cell of the test section 2 through the ADSL device operating system if normal by performing the test and inspection in the fourth step. In claim 1, The third step, And testing and checking an ATM link state of the test section 1. In claim 1, The fifth step, And testing and checking an ATM link state of the test section 2. In claim 1, If it is determined that the abnormality by performing any one of the test and inspection process of the second step to the fifth step, the test method of the ADSL failure handling system, characterized in that for specifying and outputting the section corresponding to the abnormality.

Images