KR20020032047A - Apparatus and method for line test/maintenance of access network - Google Patents

Abstract

PURPOSE: A device for testing/maintaining a line of a subscriber network and a method thereof are provided to perform an ADSL circuit test/maintenance by maintaining a wire communication channel with a client and checking and managing quality measurement and a service trouble toward the client or the network effectively in an ADSL service environment based on a subscriber network. CONSTITUTION: A matrix switch(31) stores a communication module(312) based on an ethernet for performing a communication with a splitter module(311) and an ADSL test system(32) for maintaining a wire call with a client and testing an ADSL service of the client and a network by a disconnect test in an ADSL test. An ADSL test system(32) stores a communication module(323) based on an ethernet for switching to an ADSL test module(321) or a PC module(322) having an ADSL modem, transmitting test information to a trouble receipt and maintenance system(remote place), and performing a communication with the matrix switch(31). The splitter module(311) is positioned at the matrix switch(31) and can be enlarged in accordance with the number of circuits capable of being tested in the matrix switch(31). An "IN/OUT" line is separated based on the matrix switch(31), and "IN#1/OUT#1" line connected to an MDF(Main Distribution Frame) occupies two ports of the matrix switch(31) and an "IN#2/OUT#2" line connected to a DSLAM(Digital Subscriber Line Access Multiplexer) occupies two ports of the matrix switch(31).

Description

Apparatus and method for line test / maintenance of access network}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circuit test / maintenance apparatus of a subscriber network and a method thereof and a computer readable recording medium recording a program for realizing the method, in particular an asymmetric digital subscriber line (ADSL). In order to effectively cope with the service failure, the circuit test / maintenance apparatus of the subscriber network which performs the circuit test and maintenance of the subscriber network, and a method and a computer-readable recording medium recording the program for realizing the method. It is about.

First, terms used in the present invention and drawings are defined as follows.

"mixed signal" refers to a signal in which a voice signal and an ADSL signal are combined, and CP is a word obtained from a cable pair, and is typically an external line leading to a main distribution frame (MDF) at the subscriber side. "LEN" refers to an extension from the MDF side to the exchange side, usually taken from the Equipment Number on the exchange side.

In addition, "IN" refers to a line entering a DSLAM input terminal through which a "mixed signal" is transmitted to a line used for configuration with a Digital Subscriber Line Access Multiplexer (DSLAM) device installed for an ADSL service, and "OUT". Is a line for delivering the filtered voice signal through the DSLAM output terminal, which is connected to the "LEN" line to provide voice telephone service.

Also, " IN # 1, IN # 2, OUT # 1 and OUT # 2 " indicate an environment that is reconfigured around a matrix switch in order to switch the line configuration for providing a general ADSL service to the line configuration according to the present invention. The host digital terminal (HDT) is a domestic device of the optical subscriber transmission device, the central office terminal (COT) is a domestic device of the optical subscriber transmission device, and the optical network unit (ONU) is an optical subscriber transmission. The subscriber side device of the device, RT (Remote Terminal) represents the subscriber side device of the optical subscriber transmission device.

Finally, "adsl # 1 and adsl # 2" is a matrix switch as an identifier for referring to the indication of the "adsl" signal at the end of the device splitter to switch from the optical subscriber network based ADSL service provision to the circuit configuration according to the present invention. It is divided into centers.

Currently, the copper subscriber failure management system that is currently being used is performing maintenance of the copper subscriber network through a procedure mainly performing a circuit test from the exchange to the subscriber station.

Recently, in order to maintain a newly introduced broadband subscriber network transmission apparatus and subscriber line, introduction of a new maintenance system is essential. In particular, ADSL, which is introduced to provide high-speed Internet service, is a broadband subscriber network transmission system that needs to be systematically maintained.

Next, the prior art will be described with reference to FIGS. 1 and 2 as follows.

Conventionally, the maintenance work for the general telephone subscriber and the Integrated Service Digital Network (ISDN) telephone subscriber based on the copper line was performed by computerizing in the subscriber line centralized operation maintenance system (SLMOS). Maintenance work was performed in the Dedicated Line Management System (DELMONS). Here, the trouble report on the service based on the copper wire was used by telephone. However, no systematic maintenance work has been done for broadband subscriber networks consisting of FLC systems and asymmetric digital subscriber lines (ADSL). That is, there was no system for performing maintenance on ISDN, leased line, landline, high speed internet service using ADSL that can be provided by broadband subscriber network.

ADSL service provides ADSL service based on Digital Subscriber Line Access Multiplexer (DSLAM) to conventional copper subscriber network, connects DSLAM to optical subscriber network, or transmits optical subscriber with ADSL Terminal Unit-Central (ATU-C) function. It has a type that provides ADSL service using device. However, in the past, the maintenance personnel manually operated by separating the line for the ADSL service failure by manually operating the measuring instrument for the ADSL test (see FIGS. 1 and 2). There was a problem that can not accommodate properly.

Therefore, in the current ADSL technology field, in order to effectively cope with ADSL failures, there is a need for an automation system for maintenance and a maintenance system that can solve the problem as clearly as possible when reporting a failure of a customer.

The present invention has been made to solve the above problems, the quality measurement and service to the customer side or network side while maintaining the wired communication channel with the customer side in the ADSL service environment based on the copper subscriber network or optical subscriber network To provide a network test / maintenance device of a subscriber network for performing ADSL line test and maintenance by effectively checking for and correcting the abnormality, and a computer readable recording medium recording the method therefor and a program for realizing the method. The purpose is.

1 is a diagram illustrating an ADSL configuration based on a conventional copper subscriber network.

2 is a diagram illustrating an ADSL configuration based on a conventional optical subscriber network.

Figure 3 is a configuration diagram of an embodiment of a circuit test and maintenance device based on a copper subscriber network according to the present invention.

Figure 4 is a configuration diagram of an embodiment of a circuit test and maintenance device based on the optical subscriber network according to the present invention.

5 is a flowchart illustrating one embodiment of a circuit test and maintenance method for a subscriber network according to the present invention;

* Explanation of symbols for the main parts of the drawings

31,41: matrix switch 311: splitter module

312,323,423: Communication module 32,42: ADSL test system

321,421: ADSL test module 322, 422: PC module with ADSL modem

In order to achieve the above object, the present invention, in the line test and maintenance apparatus of the subscriber network, connects between the MDF (Main Distribution Frame) and DSLAM (Digital Subscriber Line Access Multiplexer) when performing normal service, the failure report or Matrix switching means for switching by changing the connection configuration according to an external remote command when maintenance is required; And a transmission means for determining whether a test interval generated while switching with the matrix switching means, a quality measurement test according to the corresponding problem, and whether there is a service abnormality to the network side, and delivering the remote control to the remote site.

In addition, the present invention, in the line test and maintenance device of the subscriber network, connecting the predetermined line (adsl # 1, adsl # 2) of the external device when performing the normal service, the transmission device when the failure report or maintenance required Matrix switching means for switching by changing the connection configuration for testing to the customer side or the network side according to a control command transmitted through a channel between the domestic device / subscriber side device (HDT / ONU or COT / RT) of the company; And a transmission means for determining whether a test interval generated while switching with the matrix switching means, a quality measurement test according to the corresponding problem, and whether there is a service abnormality to the network side, and delivering the remote control to the remote site.

In addition, the present invention, in the line test and maintenance method applied to the circuit test and maintenance device of the subscriber network, according to the failure report or maintenance request for the line service, customer subscription information, facility information and network status information A first step of identifying a service problem using; A second step of determining a broken section according to a result of identifying the problem; A third step of, if the determined section is a section according to a request of a customer, constructing a test line by matrix switch control, measuring quality through a test module in a line test system, and checking and processing a service abnormality; And if the determined section is a section according to a request from the network side, constructing a test line by the matrix switch control to check and process a service abnormality for the network line through a test module with a modem in the line test system. Characterized in that it comprises a step.

In addition, the present invention, the line test and maintenance device provided with a processor, using the subscription information, facility information and network status information of the customer in accordance with the failure report or maintenance request for the line service to determine the service problem 1 function; A second function of determining a broken section according to a result of identifying the problem; A third function of constructing a test line by matrix switch control to measure quality through a test module in a line test system to check whether there is a service abnormality if the determined section is a section according to a request of a customer side; And if the determined section is a section according to a request from the network side, constructing a test line by the matrix switch control to check and process a service abnormality for the network line through a test module with a modem in the line test system. A computer readable recording medium having recorded thereon a program for realizing the function is provided.

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

3 is a diagram illustrating an embodiment of a circuit test and maintenance apparatus based on a copper subscriber network according to the present invention.

As shown in FIG. 3, the line test and maintenance apparatus based on the copper subscriber network according to the present invention can test the ADSL service of the client side and the network side by the segment test while continuing the wired call with the customer during the ADSL test. Matrix switch 31 having a built-in Ethernet-based communication module 312 for communicating with the splitter module 311 and the ADSL test system 32 so that the communication, and the ADSL test module 321 according to the test interval and the problem Or Ethernet-based communication module 323 for transmitting test information to the fault reception and maintenance system (remote location) and communicating with the matrix switch 31 while switching to a PC module 322 equipped with an ADSL modem. It is provided with the ADSL test system 32 incorporating it.

Here, the splitter module 311 is located in the matrix switch 31 and can be expanded according to the number of circuits that can be tested in the matrix switch 31. Therefore, three terminals ("mixed signal", "voice signal", "adsl signal") of the splitter module 311 occupy three ports in the matrix switch 31, respectively.

Meanwhile, the "IN / OUT" line, which is connected to the DSLAM in the conventional MDF, is separated from the matrix switch 31 so that the "IN # 1 / OUT # 1" line connected to the MDF is connected to the matrix switch 31. ) Occupy two ports, and the "IN # 2 / OUT # 2" line connected to the DSLAM side occupies two ports of the matrix switch 31.

In addition, the matrix switch 31 is configured such that "IN # 1" and "IN # 2", "OUT # 1" and "OUT # 2" are connected during normal service, and when a customer reports a failure or maintains a communication service provider. If the test is required according to the maintenance needs, the conventional connection configuration is changed electronically or mechanically according to the fault reception through the communication module 33 and the maintenance system (remote location). Here, the method to test the ADSL service with the customer side or the network side while maintaining the wired call with the customer during the ADSL line test is as follows.

For ADSL test to customer side, disconnect "IN # 1" and "IN # 2", "OUT # 1" and "OUT # 2", and connect "IN # 1" port coming from MDF to splitter module ( Connect to the "mixed signal" port of 311), and connect the "OUT # 1" port from the MDF side to the "voice signal" port of the splitter module 311. Then, the port of the matrix switch 31 occupied by the test line connected to the ADSL test system 32 is connected to the "adsl signal" port.

On the other hand, for the ADSL test to the network side, disconnect the connection of "IN # 1" and "IN # 2", "OUT # 1" and "OUT # 2" as above, and "IN # 1" coming from the MDF side. The port is connected to the "mixed signal" port of the splitter module 311 and the "OUT # 1" port coming from the MDF side is connected to the "voice signal" port of the splitter module 3111.

The ADSL test module 321 may be located in the ADSL test system 32, and may be configured to be expanded and replaced as necessary, and may selectively connect a plurality of test lines. In addition, the ADSL test module 321 measures a multimeter, a voice frequency quality measurement, a data transmission quality measurement, and a wideband measurement, and enables an ADSL test such as a loop test and a modem test.

The PC module 322 with the ADSL modem attaches the network resources used by the customer for the ADSL service, including the DSLAM port, and receives the customer authentication for the Internet service and the dynamic IP (Internet Protocol) allocation problem. Configure it so that you can cope with it while viewing the screen of the maintenance system (remote site). For this purpose, the PC module 322 to which the ADSL modem is attached is configured so that its resources can be used remotely on an intranet, for example, in a Linux environment or an NT server environment.

On the other hand, the port of the test line connected to the ADSL test system 32 connects to the "IN # 2" port connected to the DSLAM side.

Therefore, when the operation personnel of the trouble reception and maintenance system (remote site) respond to the failure report of the customer using the ADSL service, they call the customer's landline telephone to measure the quality measurement using the ADSL test module 321 and the PC with the ADSL modem. It is possible to determine whether there is a service abnormality to the network side using the module 322.

The matrix switch 31 and the ADSL test system 32 have Ethernet-based communication modules 312 and 323 for communication with each other, fault reception and maintenance system (remote location), and a PC module to which an ADSL modem is attached. 322 has two Ethernet ports, one for testing via connection with an ADSL modem and the other for communication with a fault reception and maintenance system (remote location).

4 is a configuration diagram of an embodiment of a circuit test and maintenance apparatus based on an optical subscriber network according to the present invention.

As shown in Fig. 4, the circuit test and maintenance apparatus based on the optical subscriber network according to the present invention tests the ADSL service of the client side and the network side by the segment test while continuing the wired call with the customer during the ADSL circuit test. The built-in matrix switch 41 embedded in the ONU or RT, and the communication module 423 for communicating with the matrix switch 41 are built in, and the ADSL test module 421 or An ADSL test system 42 is provided for passing test information to the fault reception and maintenance system (remote location) while switching to a PC module 422 with an ADSL modem.

However, the control of the matrix switch 41 is an indirect communication method, not a direct communication method between the HDT / ONU or the COT / RT, and transmits a control command through an embedded operation channel, and transmits an ONU or Flexible positioning of the ADSL test system 42 connected to the matrix switch 41 by a test line, taking into account the location of RT, capacity and coverage and the ADSL modem operating distance from the PC module 422 to which the ADSL modem is attached. Set it to

In addition, unlike the above-described FIG. 1, the matrix switch 41 embedded in the ONU or RT is located at the rear of the splitter of the ONU or RT, so that the splitter module does not need to be built in the matrix switch 41. Of the splitter terminals connected to the customer side line, only the terminal for "adsl signal" is connected via the matrix switch 41. That is, the customer-side line of the ONU or RT has been split through a splitter, and the voice line and the "adsl" line have been connected to the internal logic of the ONU or RT, respectively. ) Line is the same as the existing connection, but the "adsl" line is divided into the "adsl # 1" line and the "adsl # 2" line around the matrix switch 41 to occupy two ports of the matrix switch 41. The "adsl # 2" line is connected to the internal logic of the ONU or RT.

The matrix switch 41 is configured such that the "adsl # 1" line and the "adsl # 2" line are connected during normal service, and between the HDT / ONU when a test is required according to the customer's failure report or maintenance needs of the service provider. Or, depending on the control commands sent using the embedded operation channel between the COT / RT, the connection configuration may be changed electronically or mechanically for testing to the customer or network side.

ADSL test system 42 having an ADSL test module 421, a PC module 422 with an ADSL modem, and an Ethernet-based communication module 423 for communication with a fault reception and maintenance system (remote location). Same as the feature of FIG. 1 described above.

On the other hand, in the ADSL line test, the following methods can be used to test the ADSL service with the customer side or the network side while maintaining a wired call with the customer.

Since the voice line is configured like the existing connection, and the landline is always available, for the ADSL test to the customer side, disconnect the "adsl # 1" port and the "adsl # 2" port and the ADSL test system ( The port of the matrix switch 41 occupied by the test line coming from 42) is connected to the "adsl # 1" port.

On the other hand, for the ADSL test to the network side, as in the above, the connection between the "adsl # 1" port and the "adsl # 2" port is terminated, and the matrix switch 41 occupied by the test line connected to the ADSL test system 42 is taken. Connect the port to the "adsl # 2" port.

5 is a flowchart illustrating an embodiment of a circuit test and maintenance method for a subscriber network according to the present invention.

As illustrated in FIG. 5, when the ADSL customer receives a failure report or when maintenance is required, the operator of the failure reception and maintenance system may utilize the customer's subscription information and facility information inquiry and network status information, but use a wired call with the customer. Respond to customer failure reports while maintaining the quality of the service, while immediately tracking the cause of the customer's ADSL service problems and seeking solutions to improve the quality of maintenance services.

Therefore, in FIG. 5, after confirming the subscription information of the customer when reporting the ADSL failure, the ADSL test modules 321 and 421 to the customer side are used according to the facility (the ADSL service based on the wired subscriber network or the ADSL service based on the optical subscriber network). The method of checking the quality measurement test and the presence or absence of service abnormality using the PC modules 322 and 422 with the ADSL modem to the network side are shown. At this time, the section-by-section test is performed while maintaining the communication channel through the landline telephone with the customer. In case of confirming service abnormality using PC module (322,422) with ADSL modem attached to the network side, the operator applies the customer's information as it is to the operation terminal and service while viewing the trouble reception and maintenance system (remote site) screen. It can check whether there is any abnormality, and immediately check the service status to the customer's network side and respond by confirming the customer's PC environment configuration through dialogue to improve the quality of maintenance service for the customer and improve the customer's reliability and satisfaction. It becomes possible.

Now, a method for performing circuit test and maintenance of a subscriber network according to the present invention will be described in detail.

First, when the ADSL customer receives a failure report or needs maintenance (501), the failure reception and maintenance system can utilize the customer's subscription information, facility information inquiry and network status information, but maintains the customer's wired call while maintaining While responding to the failure report, immediately grasp the ADSL service problems of the customer for each section (502) to determine the failure section (503).

If there is a request for ADSL service from the customer side, a test line to the customer side by the control of the matrix switches 31 and 41 is configured (504) through the ADSL test modules 321 and 421 in the ADSL test system 32 and 42. Measure the quality (505), and if there is a request for ADSL service from the network side, configure the test line from the network side by controlling the matrix switches (31, 41) (506) so that the ADSL modem in the ADSL test system (32, 42) Through the attached PC module (322, 422) to check the network side ADSL service abnormality (507). At this time, maintain the call channel with the customer through a wired telephone.

Thereafter, comprehensive judgment and response measures are taken to improve maintenance service quality and improve customer satisfaction (508).

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible in the art without departing from the technical spirit of the present invention. It will be apparent to those of ordinary knowledge.

As described above, the present invention can remotely handle the presence or absence of an ADSL service, thereby reducing the manpower and time for operation maintenance, improving the quality of the ADSL maintenance service, and improving the reliability and satisfaction of the customer. It has the effect of bringing customer advantage.

Claims (12)

In line test and maintenance device of subscriber network, Matrix switching means for connecting between a main distribution frame (MDF) and a digital subscriber line access multiplexer (DSLAM) during normal service and changing a connection configuration according to an external remote command when a failure report or maintenance is required; And The test means generated while switching with the matrix switching means, the quality measurement test according to the problem and the transmission means for determining the presence or absence of service abnormality to the network side to the remote site Circuit test and maintenance device of the subscriber network comprising a. The method of claim 1, The matrix switching means, Change the connection configuration electronically or mechanically for testing the port occupied by the line of the customer line, the port occupying the test line connected to the transmission means, and the port of the splitter part to the customer side or the network side under the control of the transmission means. Line test and maintenance device of the subscriber network, characterized in that. The method of claim 1, The matrix switching means, A splitter unit configured to increase the number of lines according to the number of lines that can be tested in order to provide line services to the network side while maintaining a wired call with the customer side, and to perform a segment test; And Communication unit for performing communication with the transfer means and communication with the remote site Circuit test and maintenance device of the subscriber network comprising a. The method of claim 3, wherein The splitter unit, And a predetermined port (mixed signal, voice signal, and adsl signal), and using the same, respectively, occupying the port of the matrix switching means. In line test and maintenance device of subscriber network, Connect normal line (adsl # 1, adsl # 2) of external device when performing normal service, and between internal device / subscriber-side device (HDT / ONU or COT / RT) of transmission device in case of failure report or maintenance Matrix switching means for switching by changing a connection configuration for a test to a customer side or a network side according to a control command transmitted through a channel of the apparatus; And The test means generated while switching with the matrix switching means, the quality measurement test according to the problem and the transmission means for determining the presence or absence of service abnormality to the network side to the remote site Circuit test and maintenance device of the subscriber network comprising a. The method of claim 5, The matrix switching means, Located in the rear end of the splitter of the domestic device / subscriber-side device (HDT / ONU or COT / RT) of the transmission device, characterized in that to provide a line service to the network side by a split test while maintaining a wired call with the customer side Circuit test and maintenance device of subscriber network. The method of claim 5, The control command of the matrix switching means, Control by means of a channel between the domestic device / subscriber-side device (HDT / ONU or COT / RT) of the transmission device, and the domestic device / subscriber-side device (HDT / ONU or COT / RT) of the transmission device. The circuit of the subscriber network is characterized in that it is possible to flexibly set the position of the transmission means connected to the matrix switching means by a test line in consideration of the position, the capacity and the coverage, and the modem operating distance from the PC to which the modem is attached. Test and maintenance device. The method according to any one of claims 1 to 7, The delivery means, A measurement and test unit configured to be extended and replaced according to the needs of the circuit test, and to measure and test the abnormality by selectively connecting a plurality of test lines; Test processing unit for connecting the network resources used by the customer for the line service, including the DSLAM port as it is, and using the resource with the modem on the intranet to check and process the line service abnormality to the customer's network. ; And Communication unit for performing communication with the matrix switching means and the remote location Circuit test and maintenance device of the subscriber network comprising a. The method of claim 8, The measurement and test unit, Line test and maintenance equipment for subscriber networks, characterized by multimeter measurement, voice frequency quality measurement, data transmission quality measurement, wideband measurement, loop test and modem test. The method of claim 9, The test processing unit, And a test port for connecting to the modem and a communication port for connecting to the remote site. In the circuit test and maintenance method applied to the circuit test and maintenance device of the subscriber network, A first step of identifying a service problem using a customer's subscription information, facility information, and network status information according to a failure report or maintenance request for a circuit service; A second step of determining a broken section according to a result of identifying the problem; A third step of, if the determined section is a section according to a request of a customer, configuring a test line by matrix switch control, measuring quality through a test module in a line test system, and checking and processing a service abnormality; And A fourth step of constructing a test line by the matrix switch control to check whether or not there is a service abnormality for the network line through a test module with a modem in the line test system if the determined section is a section according to a request from the network side. Circuit test and maintenance method of the subscriber network comprising a. In line test and maintenance devices equipped with processors, A first function of identifying a service problem using a customer's subscription information, facility information, and network status information according to a failure report or maintenance request for a circuit service; A second function of determining a broken section according to a result of identifying the problem; A third function of constructing a test line by matrix switch control to measure quality through a test module in a line test system to check whether there is a service abnormality if the determined section is a section according to a request of a customer side; And A fourth function of constructing a test line by the matrix switch control to check whether there is a service abnormality for the network line through a test module with a modem in the line test system if the determined section is a section according to a request from the network side. A computer-readable recording medium having recorded thereon a program for realizing this.