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Apparatus for realizing ethernet VDSL accessing in ATM-DSLAM

A technology of Ethernet and ATM cells, which is applied in the branch office to provide special service devices, selection devices, data switching networks, etc., and can solve the problems of slowing down the development of ATM networks

Inactive Publication Date: 2005-02-16
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the development speed of ATM network has slowed down, it will still exist for a long time, and has irreplaceable advantages in end-to-end Qos (Quality of Service) guarantee and multi-service bearing

Method used

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  • Apparatus for realizing ethernet VDSL accessing in ATM-DSLAM
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  • Apparatus for realizing ethernet VDSL accessing in ATM-DSLAM

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Embodiment Construction

[0019] The VDSL access of Ethernet is realized through the cooperation of VDSL subscriber board and ATM DSLAM product. Take ZXDSL 8220 system of ZTE Corporation as an example. This ZXDSL 8220 is an ATM DSLAM product. The system mainly includes upper connecting board, Core board and user board. The function of the VDSL user board is to complete the user interface and uplink convergence of the VDSL system based on the Infineon solution. From the connection scheme, it is no different from the general ADSL user board, but because the VDSL system of the Infineon scheme is usually based on IP, in this implementation, an FPGA is used inside the board to realize the Ethernet interface ( SMII) to ATM interface (UTOPIA) conversion.

[0020] Such as figure 1 Shown is the schematic diagram of the connection of the functional modules of the VDSL subscriber board. The DSL user board includes: multiplexing chip 3, VDSL chip 1, FPGA field programmable gate array 2, CPU processor 4, power supply m...

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Abstract

The device includes following parts and connections: multiplexing chip, VDSL set chips, FPGA parts, CPU, power source module, clock generation and driving module; multiplexing chip through UTOPIA interface and microprocessor interface is connected to FPGA parts and CPU; VDSL set chips through SMII interface and microprocessor interface is connected to FPGA parts and CPU; FPGA parts partition, process, convert Ethernet data packet into ATM cells, as well as constitute ATM cells to Ethernet data packet in order to carry out full duplex transmission data, and static binding of physical layer IDs between SMII interface and UTOPIA interface is carried out; CPU controls and manages VDSL set chips, FPGA part multiplexing chip; power source module supplies power at different voltages, and clock generation module generates clock signal. The invention can realize ADSL and VDSL access mode to be mixed inserted into ATM DSLAM system.

Description

Technical field [0001] The invention relates to a device for data communication using a DSL digital subscriber loop, in particular to a device for realizing Ethernet VDSL access in an ATM DSLAM. Background technique [0002] With DSL (Digital Subscriber Loop, Digital Subscriber Loop) technology, especially ADSL (Asymmetrical Digital Subscriber Loop, Asymmetric Digital Subscriber Loop) technology, it has been continuously recognized by users and telecom operators. DSLAM (Digital Subscriber Line Access Multipleplexer, The construction of digital subscriber line access multiplexers has truly become a hot spot in broadband construction in the past two years. The traditional DSLAM network side interface generally adopts ATM (Asynchronous Transfer Mode, asynchronous transfer mode) interface, which is more suitable for telecom operators with ATM metropolitan area network. This DSLAM based on ATM architecture is called ATM DSLAM. [0003] VDSL (Very high-speed Digital Subscriber Loop) is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/16H04L12/24H04L12/26H04L12/28H04Q3/00H04Q3/545
Inventor 孟雄斌陈多磊成剑波
Owner ZTE CORP