U


ULL (Unbundling Local )
System through which OLO can rent the “last mile” of local loop, connecting to their equipments.


UMTS
(Universal Mobile Telecommunications System)
Third-generation mobile communication standard. It’s constituted by a broadband system in which data travel at 2, communication is faster, quality is better and multimedia contents can travel trough the Net.

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Universal service
The obligation to supply basic service to all users throughout the national territory at reasonable prices.


V


VAS
(Value Added Services)
Value Added Services provide a higher level of functionality than the basic transmission services offered by a telecommunications network for the transfer of information among its terminals, which include wired or wireless switched-circuit analog voice communications; direct “unrestricted” digital point-to-point service at 9,600 bit/s; packet switching (virtual call); direct broadband analog transmission of TV signals, and supplementary services, such as closed user groups; call waiting; collect calls; call forwarding, and identification of number called. Value Added Services performed by the network, the terminals or the specialized centers include message handling services (MHS) (which can be used, among other things, for commercial documents in predetermined formats); electronic directories listing users, network addressees and terminals; e-mail; fax; teletex; videotex and videotelephone. Value Added Services could include also value added voice telephony services such as Freephone or Premium Rate Services.


VDSL (Very - high – data – rate Digital Subscriber Line)

Access technology that allows providers to give clients, by means of an apparatus installed in their homes, access to voice and TV services on the traditional telephone line with a speeds of up to 100 Mbps in downstream (VDSL2).


VOD
(Video On Demand)
TV-program supply on user's request, with payment of a fee for each purchased program (a movie, a soccer match, etc) broadcast in a special method for cable and satellite TV.


VoIP
(Voice Over IP)
Transmission of voice communications over Internet Protocol (IP) data networks, such as IP-based LANs, intranets or the Internet.  

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