Tiscali 2008 Annual Report Download - page 173
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12 ATTACHMENT - GLOSSARY
172
VoD
acronym for Video On Demand, this is the supply of television programmes on request to the user
against payment of a subscription fee or an amount for each programme (a film, a football game)
purchased. Broadcast in a special manner for satellite TV and cable TV.
VoIP
acronym for Voice over internet Protocol, digital technology which permits the transmission of voice
packets via Internet, Intranet, Extranet and VPN networks. The packets are transported according
to H.323 specifications, or the ITU standard (International Telecommunications Union) which
represents the basis for the data, audio, video and communications services on IP-type networks.
VPN
acronym for Virtual Private Network, created on the Internet or Intranet. The data between workstation
and server of the private network is forwarded via a common public Internet network, but using
technologies for protection from any interception from unauthorized parties.
Virtual Local Loop Unbundling
or VLLU
method for accessing the local analogue network for which, despite the absence of physical
infrastructures, the conditions and terms of access under LLU mode are re-produced This is a
temporary access method which, as a rule, is replaced by the LLU method.
xDSL
acronym of Digital Subscribers Lines, a technology which, via a modem, uses the normal telephone
duplex cable and transforms the traditional telephone line into a high-speed digital connection
line for the transfer of data. The various ADSL, ADSL 2, SHDSL etc., belong to this family of
technologies.
WI-FI.
Service for connecting to Internet under high-speed wireless mode.
Wi-Max
acronym for Worldwide Interoperability for Microwave Access: it is a technology which permits access
without wires to broadband telecommunications networks. It was established by the WiMAX Forum,
a global forum, made up of the most important companies in the field of land-based and mobile
telecommunications which has the purpose of developing, promoting and testing the interoperability
of systems based on the IEEE 802.16-2004 standard for land-line access and the IEEE.802.16e-
2005 standard for land-line and mobile access
Wholesale
services which involve the re-sale to third parties of access services.
WLR
acronym for Wholesale Line Rental, the re-sale by a telecommunications operator of the service for
the rental of lines from the Incumbent.