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Glossary of electronic communication and postal services
Glossary of electronic communication and postal services
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VDSL - Very high bitrate asymmetric Digital Subscriber Line
Asymmetric transmission technology (which includes the xDSL family) of large bandwidth which allows copper lines, for example in the telephone network, to also be used for high speed data transmission. A VDSL connection uses a high bitate downstream channel (45 Mbits/s), a lower bitrate upstream channel (1.5 Mbits/s), as well as the normal telephone service in the low frequency range.
19.08.2008
Very Small Aperture Terminal (VSAT)
Satellite communications equipment with a parabolic antenna with a small diameter.
28.10.2010
VHF - Very High Frequency
One of the frequency bands used for the broadcasting of terrestrial television service.
19.08.2008
Video On Demand (VoD)
Service which allows a determined programme (according to a catalogue) to be sent to a customer, at the desired moment and in response to an individual request, generally requiring payment, as opposed to the conventional television transmission which is sent to all customers able to receive it.
28.10.2010
Video-Telephone
Telephone service which also allows the parties involved to see each other in Real Time.
19.08.2008
Videotext
System which allows the visualisation of text and graphics signals obtained from a central database on video terminals. Broadcast through the telephone network.
19.08.2008
Virtual calling card service
Service that allows the user to make telephone calls by dialling a specific access code of the National Numbering Plan (''882xy''), with two relevant features: invoicing/collection and mobility. The user is able to make the call after the account associated to the card is identified and authenticated (for example, the number and PIN) based on a set of dialled characters, the account associated to the dialled identification being billed for charges.
30.01.2009
Virtual Circuit
Connection established between two extremities of the network during a session in which the band width is attributed in a dynamic form and which behaves like a permanent circuit.
06.08.2008
Virtual LAN (VLAN)
Local virtual network, in which although physically independent the users are connected as if on a local network.
28.10.2010
Virtual Network
Network with allows connections to be established between various locations without the need for permanent lines dedicated for the exclusive use of their users. The connections are established by means of a programme and exist only during the communication period.
19.08.2008
Virtual Private Network (VPN)
Virtual private network treated as dedicated lines between these places used by a company or private group to carry out connections between places for voice or data communications. The equipment used remains in the premises of the public telecommunications operator and is an integral part of the public network, but it has software which allows a genuine private network.
19.08.2008
Latest update: 02.09.2008
Latest update: 02.09.2008
Virtual Reality
Computerised simulation which allows the user to be present in a virtual environment created by a computer and to interact with the images which are presented as if it were reality. Usually a helmet, glasses and sensory gloves are used.
18.08.2008
VLAN - Virtual LAN
Local virtual network, in which although physically independent the users are connected as if on a local network.
19.08.2008
VLR - Visitor Location Register
Register of the location of visitors using a particular mobile communications network to identify the location of the user.
19.08.2008
VoD - Video On Demand
Service which allows a determined programme (according to a catalogue) to be sent to a customer, at the desired moment and in response to an individual request, generally requiring payment, as opposed to the conventional television transmission which is sent to all customers able to receive it.
19.08.2008
Voice Mail
Function of recoding a voice message, which can be accessed from various places or equipment. It is available, in the fixed telephone service and in the mobile communications service among others. At a basic level, this service enables the caller to record a voice message in the voicemail box of the user being called when the latter is unavailable, engaged, has activated forwarding to voicemail or does not answer.
19.08.2008
Latest update: 15.10.2010
Latest update: 15.10.2010
VoIP - Voice over Internet Protocol
Voice over Internet Protocol - Consists of converting analogue voice packages into digital packages and making them travel on the Internet.
19.08.2008
VPN - Virtual Private Network
Virtual private network treated as dedicated lines between these places used by a company or private group to carry out connections between places for voice or data communications. The equipment used remains in the premises of the public telecommunications operator and is an integral part of the public network, but it has software which allows a genuine private network.
19.08.2008
VSAT - Very Small Aperture Terminal
Satellite communications equipment with a parabolic antenna with a small diameter.
19.08.2008
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Services and Useful Information
Tenders for the selection of provider(s) of universal service of electronic communications |
Consultation on the draft decision on billing and collection of penalties applied to the beneficiaries of the Reference Poles Access Offer of PTC - comments until 21.06.2013 |
ANACOM Conference 2013 - Financing the future, 01.07.2013 |
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World Radiocommunication Conference 2015 (WRC-15), Geneva, 2-27.11.2015 |
ARCTEL-CPLPhttp://www.arctel-cplp.org/ |
Positions, clarifications and statements issued by ANACOM between 2004 and 2013 |
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Access the services which we provide electronically |
FAQ on Audiotext, Digital Terrestrial Television - DTT, International Roaming, Licences for land mobile service private radiocommunications networks, Local Loop Unbundling, Message-Based value Added Services, National Numbering Plan, Operator Portability, R&TTE Regulatory Framework, Telephone Service at a Fixed Location and Universal Service, VoIP |
