Published by ZTE
ADSL plus is currently being deployed worldwide as the new mainstream broadband technology for residential and business customers. But at the same time, the industry is gearing up for the next step of the DSL evolution: VDSL . This second version of the very high-speed digital subscriber line (VDSL) standard from ITU-T promises to deliver 100Mbps symmetrical traffic on short copper loops.
The greater bandwidth of VDSL gives telecommunications operators the ability to offer advanced services such as multiple streams of interactive standard and high-definition TV over IP over the existing copper plant. TV services are fast becoming strategically important to telecommunication operators who are competing head-to-head with cable operators launching voice over IP (VoIP) and high-speed internet services.
ITU began drafting its VDSL standard (G.99 . ) in January 004. Consensus for the standard was reached at a meeting in Geneva in May 005. As with ADSL/ /plus, the underlying modulation in the VDSL standard is discrete multitone (DMT). VDSL is based on both the VDSL1-DMT and ADSL /ADSL plus recommendations. Therefore, it is spectrally compatible with existing services and enables multimode operability with ADSL/ /plus. VDSL extend the spectrum to 0MHz and can deliver 00Mbps symmetrical traffic on short copper loops at most.
Click here to read this whitepaper: vdsl2-a-feasible-solution-fore2809clast-milee2809d-nov
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