VDSL2

VDSL2 technology is similar ADSL and ADSL2 + technology, using DMT modulation, but the frequency range increased to 30MHz, can provide up to 100Mbps bandwidth a communications technology.

VDSL2: second-generation VDSL (VDSL) are at

Many operators as VDSL2 FTTP FTTH on display for the first time, the perfect complement to large construction such as cable connected to office or apartment, while ordinary PSTN copper is used in buildings will users connected to high-speed business. At present, France telecom already announced VDSL2 technology for public test.

VDSL2 is newest also be the most advanced xDSL broadband cable communication standards. VDSL2 support video, voice, data, HDTV and interactive games and triple (triple - the place) business widespread deployment, can help users and operators gradually, flexible and cost savings to upgrade the existing xDSL infrastructure. The industry with the standard first completely compatible was named in the VINAX VDSL2 chipset can provide up to 100Mbps within short range of symmetrical data rate, also can provide similar ADSL long, so communication performance today VINAX can not only satisfy the requirements, high-speed telecommunications network is provided a suitable for future technology that can help operators for future more and more users to provide more rich business.

The current xDSL access technology is still center (CO) and user of communication between the bottleneck. Center and distal DSLAM (digital subscriber line access multiplex) can provide gigabytes Ethernet link or even higher speed technology, users 100Mbps side only 54Mbps and wired and wireless local area network (LAN/wireless local-area network (WLAN). But in the link between the two whether with ADSL, ADSL2/2 + or VDSL have rate limit. In addition, in the same media simultaneously transmit video/HDTV, data and voice such "triple" business needs more than the VDSL1 or ADSL mature consummation quality of service (QoS). The latest triple business includes at least three TV channels, several VoIP connection and fast enough to visit the Internet, requirements to achieve the data rate of at least 30 ~ 40Mbps, this speed is about current solution ADSL2 + in actual states to reach the rate under the two times.

In order to overcome the existing insufficient access technology, industry development and standardized timely VDSL2 technology. VDSL2 is to remove the last mile of bottlenecks and global deployment of advanced triple business ideal xDSL technology.

The end user VDSL2 realize broadband service by a key driver of multichannel video, is: education and entertainment services; HDTV Use VoIP can reduce telephone charges; Basic Internet data access speed increase; Local competitive pricing, some areas with ADSL almost VDSL service fee, but add a lot of bandwidth (mainly South Korea and Japan).

Telecom operators may benefit from providing bound, these services can successfully and cable operators provide any services competition. In addition, with ADSL2 + / to move VDSL2 hybrid network (see below), can pass a single network to provide full xDSL service type, also can reduce deployment, operation and maintenance costs.

Anyway, important is VDSL2 through cost-effective mixed FTTH (FTTH) effectively solved the problem: the last mile by laying cable as close as possible by the existing family, the pipe laying the foundation to DSLAM or even hundreds of meters, in the last DLC connected with high-speed VDSL2 again.

The VDSL2 standards make business under the upload rate and can meet all transfer rate 100Mbps, is existing ADSL business 10 times. With such a high speed, the new VDSL2 standard can provide a so-called "fiber optic fibre - expand (extension)", which is no and telecoms companies directly connected to the network fiber section of buildings provide similar the bandwidth of the fiber.

In addition, the most important thing is different with preiously VDSL, ITU established VDSL2 + the inter-communication standards so that different manufacturer VDSL2 + realized the compatible, different manufacturer compatible, allows the user to equipment procurement channels increased, effectively reduce the operators operating costs, as VDSL2 + large-scale commercial popularization provides conditions.