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- Q823923 subject Q8037029.
- Q823923 subject Q8376563.
- Q823923 abstract "Very-high-bit-rate digital subscriber line (VDSL or VHDSL) is a digital subscriber line (DSL) technology providing data transmission faster than asymmetric digital subscriber line (ADSL) over a single flat untwisted or twisted pair of copper wires (up to 52 Mbit/s downstream and 16 Mbit/s upstream), and on coaxial cable (up to 85 Mbit/s down- and upstream) using the frequency band from 25 kHz to 12 MHz. These rates mean that VDSL is capable of supporting applications such as high-definition television, as well as telephone services (voice over IP) and general Internet access, over a single connection. VDSL is deployed over existing wiring used for analog telephone service and lower-speed DSL connections. This standard was approved by ITU in November 2001.Second-generation systems (VDSL2; ITU-T G.993.2 approved in February 2006) use frequencies of up to 30 MHz to provide data rates exceeding 100 Mbit/s simultaneously in both the upstream and downstream directions. The maximum available bit rate is achieved at a range of about 300 meters; performance degrades as the loop attenuation increases.".
- Q823923 thumbnail ZyXEL_VDSL_modem_of_Chunghwa_Telecom_2009-09-05.jpg?width=300.
- Q823923 wikiPageExternalLink www.digitalregionbroadband.co.uk.
- Q823923 wikiPageExternalLink related_pages.php?pd_id=111&rp_id=166.
- Q823923 wikiPageExternalLink thinkbroadband.com.
- Q823923 wikiPageExternalLink vdsl2news.blogspot.com.
- Q823923 wikiPageExternalLink dsl.
- Q823923 wikiPageExternalLink en.
- Q823923 wikiPageExternalLink vdsl-internet.htm.
- Q823923 wikiPageExternalLink home.cms.
- Q823923 wikiPageWikiLink Q104534.
- Q823923 wikiPageWikiLink Q1149752.
- Q823923 wikiPageWikiLink Q133454.
- Q823923 wikiPageWikiLink Q1444374.
- Q823923 wikiPageWikiLink Q1462168.
- Q823923 wikiPageWikiLink Q1472399.
- Q823923 wikiPageWikiLink Q1572356.
- Q823923 wikiPageWikiLink Q161618.
- Q823923 wikiPageWikiLink Q183389.
- Q823923 wikiPageWikiLink Q192808.
- Q823923 wikiPageWikiLink Q2253842.
- Q823923 wikiPageWikiLink Q2357982.
- Q823923 wikiPageWikiLink Q3063418.
- Q823923 wikiPageWikiLink Q375889.
- Q823923 wikiPageWikiLink Q39369.
- Q823923 wikiPageWikiLink Q41506.
- Q823923 wikiPageWikiLink Q7351621.
- Q823923 wikiPageWikiLink Q749753.
- Q823923 wikiPageWikiLink Q7695688.
- Q823923 wikiPageWikiLink Q7899321.
- Q823923 wikiPageWikiLink Q8037029.
- Q823923 wikiPageWikiLink Q81945.
- Q823923 wikiPageWikiLink Q8376563.
- Q823923 comment "Very-high-bit-rate digital subscriber line (VDSL or VHDSL) is a digital subscriber line (DSL) technology providing data transmission faster than asymmetric digital subscriber line (ADSL) over a single flat untwisted or twisted pair of copper wires (up to 52 Mbit/s downstream and 16 Mbit/s upstream), and on coaxial cable (up to 85 Mbit/s down- and upstream) using the frequency band from 25 kHz to 12 MHz.".
- Q823923 label "Very-high-bit-rate digital subscriber line".
- Q823923 depiction ZyXEL_VDSL_modem_of_Chunghwa_Telecom_2009-09-05.jpg.