CN201004631Y - A user end testing module for 2-generation asymmetric digital user line - Google Patents

Abstract

A user end testing module for the second generation dissymmetric digital user route includes a power supply, a CPU, a memorizer and a testing interface. The power supply is connected with the CPU, and the memorizer is respectively connected with the power supply and the CPU. The utility model is characterized in that: the CPU is connected with the user end testing module for the second generation dissymmetric digital user line by the network interface. The utility model has the advantages of being able to provide quick and accurate fault judgment and position for the maintenance of the ADSL, ADSL2 and ADSL2+ line for the telecommunication operator, and the quality pre-evaluation for the route before opening the route.

Description

A kind of second generation Asymmetric Digital Subscriber Loop (ADSL) user side test module

Technical field

The utility model relates to a kind of second generation Asymmetric Digital Subscriber Loop (ADSL) user side test module, is applied to Asymmetric Digital Subscriber Loop (ADSL) service maintenance and test, belongs to communication technical field.

Background technology

Present Asymmetric Digital Subscriber Loop (ADSL) ADSL number of users is constantly increased, can predict progressively huge from now on broadband network, make operator show especially day by day the O﹠M demand of broadband network.In order to promote the service quality of broadband network O﹠M, promptly promote the efficient of network system in line clear, the row's of maintenance barrier and operation management, need test row barrier equipment and come maintenance line.The subscriber's line of opening for distributing telephone numbers is wanted the accurately characterisitic parameter of measurement circuit, accurately the transmission performance of Pre-Evaluation circuit; For the interruption of service of reality, and to diagnose accurately and rapidly and to locate.

ADSL user side test products on the market is a lot of now, its general structure as shown in Figure 1, structured flowchart for first generation Asymmetric Digital Subscriber Loop (ADSL) user side test module, by power supply, CPU, memory, first generation Asymmetric Digital Subscriber Loop (ADSL) user side emulation testing module and test interface, power supply is connected with CPU, CPU is connected with Asymmetric Digital Subscriber Loop (ADSL) ADSL emulation testing module, first generation Asymmetric Digital Subscriber Loop (ADSL) ADSL emulation testing module is connected with test interface, memory is connected with CPU with power supply respectively, first generation Asymmetric Digital Subscriber Loop (ADSL) ADSL emulation testing module as shown in Figure 2, by parallel data grabbing card, de-interleaving interweaves, the scrambler descrambling code, coding and decoding, digital filtering, AFE (analog front end) is formed, parallel data grabbing card interweaves by de-interleaving, the scrambler descrambling code, coding and decoding, digital filtering is connected with AFE (analog front end), and there is following problem in first generation Asymmetric Digital Subscriber Loop (ADSL) user side test module:

Because ADSL user side test module only has the emulation testing function of ADSL pattern, incompatible ADSL2, ADSL2+ pattern can't realize emulation testing to the subscriber's line of a large amount of from now on ADSL2, ADSL2+;

The emulation testing module of user side test module adopts is parallelly to communicate by letter with master cpu, does not have network interface so does not possess point-to-point protocol PPPOE (Point-to-Point based on the networking PRotoco OverEthernet) function of test and the Internet packets survey meter PING (Packet Internet Grope) test can not well be judged and the location user side PC software fault.

Summary of the invention

The purpose of this utility model provides a kind of for telecom operators are providing fault judgement and location fast and accurately aspect ADSL, ADSL2 and the ADSL2+ line upkeep, and the second generation Asymmetric Digital Subscriber Loop (ADSL) user side test module of the line quality Pre-Evaluation before the line clear.

For realizing above purpose, the technical solution of the utility model provides a kind of second generation Asymmetric Digital Subscriber Loop (ADSL) user side test module, comprise power supply, CPU, memory and test interface, power supply is connected with CPU, memory is connected with CPU with power supply respectively, it is characterized in that CPU is connected with second generation Asymmetric Digital Subscriber Loop (ADSL) user side emulation testing module by network interface, second generation Asymmetric Digital Subscriber Loop (ADSL) user side emulation testing module is connected with test interface.

Described second generation Asymmetric Digital Subscriber Loop (ADSL) user side emulation testing module connects and is made up of DSP nuclear, AFE (analog front end) interface, RS memory interface and local memory interface, and DSP nuclear is connected with local memory interface with AFE (analog front end) interface, RS memory interface respectively.

CPU and memory are formed the core of testing equipment, are responsible for the software and hardware control to whole system, realize test function and and outside other PC equipment communicate.

Network interface is connected by data wire with CPU, is connected by network interface with test module, is used for communicating by letter of CPU and test module and communicating by letter of CPU and exterior PC.

Second generation Asymmetric Digital Subscriber Loop (ADSL) user side emulation testing module is connected with CPU with control line by network interface, and test interface is connected with the external testing line, is used to realize the emulation testing under ADSL, ADSL2 and the ADSL2+ pattern.

The utility model carries out the line parameter circuit values such as bit number that emulation testing can get access to line speed, Line Attenuation, noise redundancy, power output, subcarrier loading by test module to adsl line, can accurately locate the line fault situation by these parameters.The utility model has increased functions such as the compatibility of ADSL2, ADSL2+ pattern, network layer PPPOE test and ping testings:

1. compatible ADSL2 and ADSL2+ pattern

According to the ADSL mature technique, the ADSL technology is by the second generation ADSL technology of first generation ADSL technical development to compatible longer distance, bigger transmission rate, i.e. ADSL2 and ADSL2+.The utility model compatible ADSL, ADSL2 and ADSL2+ pattern;

2.PPPOE test function

PPPOE pattern access technology is substantially all adopted in the broadband access of ADSL now, the purpose of PPPOE dialup test, verify the correctness of current network agreement exactly, the failure ratio that can get rid of simultaneously many user sides is as PPPOE username and password configuration error, the PVC link is provided with mistake, and tunneling is provided with mistake etc.

3.PING test

PING can detect whether the network remote host exists and whether network is normal, its principle is by sending Internet control message protocol (Internet Control Massage Protocol, ICMP) packet is tested the situation that connects end to end, and checks that whether node that the ICMP packet is passed through and equipment are in operate as normal.That is to say by PING and can transmit a small data packets, after the other side feeds back, receive it to remote host, according to response time and data loss rate, judge with the other side's successful connection whether, how connect effect, speed.Can be with the quality of connection of this functional test you and ISP.

The utility model can be realized the emulation testing of ADSL2+, compatible ADSL of while and ADSL2, obtain parameters such as line speed, Line Attenuation, noise redundancy, output power line assesses the adsl line quality by emulation testing, can also use PPPOE test and ping testing that the procotol of operation is partly tested, can locate fast and diagnose line fault by above-mentioned several means, greatly improve the efficient of line upkeep, reduced the cost of line upkeep simultaneously.

The utility model has the advantages that can be for telecom operators providing fault judgement and location fast and accurately aspect ADSL, ADSL2 and the ADSL2+ line upkeep, and the line quality Pre-Evaluation before the line clear.

Description of drawings

Fig. 1 is the structured flowchart of first generation Asymmetric Digital Subscriber Loop (ADSL) user side test module;

Fig. 2 is the structured flowchart of first generation Asymmetric Digital Subscriber Loop (ADSL) user side emulation testing module;

Fig. 3 is the structured flowchart of second generation Asymmetric Digital Subscriber Loop (ADSL) user side test module;

Fig. 4 is an ADSL2+ emulation testing modular circuit block diagram.

Embodiment

The utility model is described in further detail below in conjunction with drawings and Examples.

Embodiment

As shown in Figure 3, structured flowchart for second generation Asymmetric Digital Subscriber Loop (ADSL) user side test module, described a kind of user side testing equipment that is applied to second generation Asymmetric Digital Subscriber Loop (ADSL), it is characterized in that, form by CPU, memory, network interface, emulation testing module, test interface and power supply, CPU is connected with memory, power supply, network interface, and network interface is connected with the emulation testing module, and the emulation testing module is connected with test interface.

The CPU of system chooses 32 high-performance ARM7 processor S3C44BOX, by data/address bus, address bus and control bus control storage (SDRAM and FALSH) and network interface, its effect is that the nucleus module of composition system is finished hardware controls and the software flow control to whole system.

The memory module circuit of system is made up of FALSH and SDRAM, is connected with CPU by data/address bus, address bus and control bus, and FLASH is E28F128J3C150, and SDRAM is HY57V561620CCT-H,

Network interface is made up of network chip DM9000, isolating transformer; wherein network chip DM9000 finishes the network analog Signal Processing; be connected with CPU with control bus by data/address bus; DM9000 offers the CPU digital signal data by data/address bus, and isolating transformer plays the protective effect to system.

As shown in Figure 4, be second generation Asymmetric Digital Subscriber Loop (ADSL) emulation testing modular circuit schematic diagram, described second generation Asymmetric Digital Subscriber Loop (ADSL) user side emulation testing module is made up of DSP nuclear, AFE (analog front end) interface, RS memory interface and local memory interface, and DSP nuclear is connected with local memory interface with AFE (analog front end) (AFE) interface, RS memory interface respectively.

Second generation Asymmetric Digital Subscriber Loop (ADSL) emulation testing modular circuit mainly realizes with lower interface and function:

1. network interface is realized communicating by letter with CPU, finishes functions such as data read, State Control;

2. memory interface: SRAM, FLASH and RS-Memory interface are provided, realize the required memory of DSP nuclear operation;

3.AFE interface: the i.e. interface of the analog front circuit of ADSL.

Second generation Asymmetric Digital Subscriber Loop (ADSL) emulation testing modular circuit is the main modular of whole second generation Asymmetric Digital Subscriber Loop (ADSL) local side test module, under the control of analog front circuit, memory circuitry and CPU, finish the copying of ADSL, ADSL2 and ADSL2+, obtain the performance parameter of current circuit reality.CPU uses network interface and corresponding software protocol to finish the function of protocol test aspects such as PPPOE and PING by test module.

In test, CPU inserts the external testing circuit to test interface, make the ADSL signal enter test macro, CPU starts test module and enters the emulation testing functional status, and test module provides CPU present operating state by control bus, and CPU detects the state of test module and waits for the successful connection signal, if successful connection at the appointed time, CPU, starts the PPPOE agreement and carries out dialup test or start ping testing according to test request by network interface read test parameter; According to test request, stop PPPOOE dialing or ping testing,

Stop the emulation testing function of test module, close test interface.

After starting emulation testing, the utility model can be set up physical link with the local side of ADSL, ADSL2 or ADSL2+ pattern, can obtain some performance parameters of current circuit after the successful connection, the bit number that loads as line speed, noise redundancy, Line Attenuation, power output, channel capacity, subcarrier etc.These parameters have been reacted the situation of current circuit carrying signal, are the most real reactions to the adsl line quality, so in the line upkeep of adsl line business, emulation testing is very important means of testing.

After emulation links successfully, can carry out the PPPOE dialup test, this function can be so that user side enters the Internet, and this also is means of verifying the function of PPPOE local side service effectively.

After PPPOE links successfully, just can carry out ping testing, can understand the situation that local side enters the Internet by ping testing, this is the important means of evaluating network situation.

Except verifying the situation of local side protocol layer work, can also get rid of the fault of computer software in the user family by PPPOE test and ping testing in this way.This maintenance for adsl line also provides very effective means.

The test function that provides by the utility model, substantially can solve the fault of the ADSL of telecom operators Access Network, and fault location is provided, realize the line upkeep of ADSL Access Network, improve efficient and professional the taking up rate safeguarded, greatly reduced the cost and the Shen announcement rate of line upkeep.

Claims (2)

1. second generation Asymmetric Digital Subscriber Loop (ADSL) user side test module, comprise power supply, CPU, memory and test interface, power supply is connected with CPU, memory is connected with CPU with power supply respectively, it is characterized in that, CPU is connected with second generation Asymmetric Digital Subscriber Loop (ADSL) user side emulation testing module by network interface, and second generation Asymmetric Digital Subscriber Loop (ADSL) user side emulation testing module is connected with test interface.

2. a kind of second generation Asymmetric Digital Subscriber Loop (ADSL) user side test module according to claim 1, it is characterized in that, described second generation Asymmetric Digital Subscriber Loop (ADSL) user side emulation testing module is made up of DSP nuclear, AFE (analog front end) interface, RS memory interface and local memory interface, and DSP nuclear is connected with local memory interface with AFE (analog front end) interface, RS memory interface respectively.

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