VDSL2

Very High-Speed Digital Subscriber Line 2 (VDSL2) is the third generation of DSL access technology, designed to support the wide deployment of triple play services such as voice, video, data, high definition television (HDTV) and interactive gaming.

VDSL2 can run from the local telephone exchanges or their associated cabinets. It is expected to offer customers who are on very short lines (dependant on attenuation and copper line quality) a significantly faster broadband experience than ADSL2+.

Telecom Wholesale is currently piloting a Wholesale VDSL2 Service.

To deliver VDSL2, a NVLT-C card is installed at the DSLAM (exchange or cabinet). This is capable of supporting ADSL1, ADSL2, ADSL2+ and VDSL2 services.

The installation of a VDSL2-compatible splitter is mandatory for delivering a good quality VDSL2 service.

A reference modem (CellPipe 7130 500V series) is being evaluated and the results will be made available once completed.

As with ADSL2+, download and upload speeds may be limited by a number of factors:

  • the condition of the copper line
  • copper loop length
  • type of cable containing the cooper loop
  • the presence of other services in a cable sheath containing the copper loop - these may cause interference to VDSL2
  • presence and degree of external interference
  • the modem performance
  • condition of the wiring within the end-user's premises. It is recommended that screened Cat.5e STP cable is used between the VDSL2 compatible splitter and the modem.

More information on VDSL2, including Wholesale's commercial launch, will be available as the pilot progresses.