Very-high-bit-rate digital subscriber line:
Very-high-bit-rate digital subscriber line (VDSL or VHDSL) is a digital subscriber line (DSL) technology providing data transmission faster than 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.
en.wikipedia.org
VDSL:
VDSL（英文：Very High Bit-rate DSL），又稱-{zh-hans:超高速数字用户线路; zh-hant:超高速數位用戶迴路;}-，是一种非对称DSL，曾是速度最快的xDSL技術，顧名思義較HDSL（-{zh-hans:高速数字用户线路; zh-hant:高速數位用戶迴路;}-）為快，通过一对VDSL设备，用作光纤结点到附近用户的最后引线。
zh.wikipedia.org
This article uses material from the Wikipedia articles %@, which are released under the Creative Commons Attribution-Share-Alike License 3.0.
Very-high-bit-rate digital subscriber lineVDSL