D


Digital Terrestrial TV
Digital Terrestrial Television Broadcasting is a new type of broadcasting technology that provides a more effective way of transmitting television services using a digital system instead of the existing analogue system.

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DSL
This technology uses a digital signal with a very high frequency in order to increase the data transfer rate.


DSL Network
(Digital Subscriber Line Network)
A network built on existing telephone lines with DSL technology devices which use sophisticated modulation schemes to pack data onto copper wires for connections from a telephone switching station to a home or office.


DSLAM
(Digital Subscriber Line Access Multiplexer)
The DSLAM denotes a telecommunications equipment to process digital signals of various clients and multiply them in a data link to the nodes of the Internet.


DVB - H
(Digital Video Broadcasting - Handheld)
DVB - H technology combines digital video with the Internet Protocol (IP): contents are subdivided into packets using the same basic technology employed by the Internet. The use of IP technology allows the transmission of TV and radio programs, web pages, music and video games to smartphones/PDA's.

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F


FTT HOME, FTT CURB, FTT (Fiber to the …)
It is the term used to indicate any network architecture that uses fiber optic cables in partial or total substitution of traditional copper cables used in telecommunications networks. The various technological solutions differ in the point of the distribution network where the fiber connection is made, with respect to the end-user. In the case of FTT Curb (Fiber to the Curb) the fiber arrives at the apparatus (distribution cabinet) located on the pavement, from where copper connections are run to the customer; in the case of FTTHome (Fiber to the Home), the fiber terminates inside the home of the customer.