Media & Resources

Cable Terms and Definitions

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UMB Ultra Mobile Broadband
Unicast In computer networks, unicast is the sending of information packets to a single destination. "Unicast" is derived from the word broadcast, as unicast is the extreme opposite of broadcasting. In computer networking, multicasting is used to regain some of the efficiencies of broadcasting. These terms are also synonymous with streaming content providers' services. Unicast servers provide a stream to a single user at a time, while multicast servers can support a larger audience by serving content simultaneously to multiple users. Unicast is also the name of a Rich Media Company which was acquired by Viewpoint Corporation in 2003.
Unique User A person who accesses a Web site one or more times within a specific time period.
Upconverter A device used to add a lower frequency to a microwave frequency.
Uplink The return signal from the user to the base station.
URA Urban Redevelopment Authority (Singapore) (
VCCI The Voluntary Control Council for Interference by Information Technology Interference (Japan) (
VOD A service offered by cable companies which is a means of viewing content that is outside the boundaries of its daily televised offerings. VOD content consists of recently aired television programs and library content, which is usually movies or programs that have not recently been aired. There are three models of VOD content - free VOD, Pay-Per-View, where the user pays an individual fee per program or event, and subscription VOD, where the user pays a flat fee for access.
VOIP Voice Over Internet Protoco - Voice telephony services delivered over network infrastructures using the Internet Protocol.
VoIP Phone A VoIP phone is a telephone set designed specifically for use in a voice over IP (VoIP) system by converting standard telephone audio into a digital format that can be transmitted over the Internet, and by converting incoming digital phone signals from the Internet to standard telephone audio. A VoIP phone allows the user to take advantage of VoIP technology without involving a personal computer, although an Internet connection is required.
VSAT Very Small Aperture Terminal - Small earth stations with a satellite dish usually 4-6 feet in diameter used to receive high speed data transmissions; can also transmit slow-speed data.
VTV Vietnam Television (
W-CDMA Wireless Code Division Multiple Access - A mobile telecommunications protocol that utilises the direct sequence Code Division Multiple Access signal method in order to achieve faster transmission rates and support more users.
Wi-Fi Wireless Fidelity - Popular term for technologies based on the IEEE standards from the 802.11 working group on wireless local area networks (WLAN), though strictly defined as a certification mark of equipment conformity and inoperability, based on that family of standards.
WiMax Worldwide Interoperability Access - Popular term for technologies based on the IEEE standards from the 802.16 working group (though like Wi-Fi strictly created as a certification mark of equipment conformity and interoperability based on those standards). Potential use includes enabling the delivery of wireless broadband access over the last mile as an alternative to wired delivery (e.g. cable and DSL). WiMAX has much greater range than Wi-Fi and uses licensed spectrum. The two are widely viewed as complimentary technologies.
Wireless Wireless communication is the transfer of information over a distance without the use of electrical conductors or "wires".
xDSL Digital Subscriber Line - DSL or xDSL, is a family of technologies that provide digital data transmission over the wires of a local telephone network. From a user’s point of view, it is a "Broadband" connection.