Vdsl2 Dslam Research And Testing

With the introduction of a new generation VDSL2technology of xDSL technology by ITUT, VDSL2technology has become the current research focus of the xDSL technology. Digital subscriber line access Multiplexer (DSLAM) is the process of providing high-speed internet access service through telephone lines.DSLAM network device is installed for the client; using multi-DSL line technology.A large numbers of users are connected to a high-speed backbone network.This paper is a research about VDSL2technologies, including the modulation method, the Spectrum program, transfer mode, the system noise processing, and DSLAM ATM protocol, comparative analysis of PTM and ATM protocol transmission.This paper discusses the progarmme spectrum and modulation for VDSL2DSLAM for analysis and comparison of addresses compatibility of the VSDL2and ADSL2+.This paper will also discuss the Routing Protocol PTM and ATM package method, by mean of protocol conversion convert ATM cell to Ethernet frame or IP packet forwarding to the first pair part or the second line of a couplet network.This paper analyses the reference model of the DSLAM and working processes on the DSLAM.This paper discusses the crosstalk, Far-End cross talks and other VDSL2features That occurs during the application of the VDSL2, using the UPBO, DPBO INP spectrum slotted technology used in different scenarios, performance improvement can be achieved in DSLAM test validation, it is a complete guide of VDSL2networks deployments and provides the basis of the theory and data of VDSL2technology.Since VDSL2spectrum expansion is based on ADSL, it causes more noise.This article on VDSL2DSLAM equipment has explained the CO and CPE with the same distance, CO model with different distance test. Co model with the VDSL2/ADSL/ADSL2+mixed wire testing, RT mode remote room ADSL DSLAM VDSL2DSLAM and Center common wire testing, radio spectrum slotted, VDSL2DSLAM throughput tests.It validates UPBO DPBO, INP, RFI notch, noise processing technology's important role in VDSL2technology.