Cable television is a system of delivering television programming to consumers via radio frequency (RF) signals transmitted through coaxial cables, or in more recent systems, light pulses through fibre-optic cables. This contrasts with broadcast television, in which the television signal is transmitted over-the-air by radio waves and received by a television antenna, or satellite television, in which the television signal is transmitted over-the-air by radio waves from a communications satellite and received by a satellite dish on the roof. FM radio programming, high-speed Internet, telephone services, and similar non-television services may also be provided through these cables. Analog television was standard in the 20th century, but since the 2000s, cable systems have been upgraded to digital cable operation.
A set-top box (STB), also known as a cable box, receiver, or simply box, and historically television decoder or a converter, is an information appliance device that generally contains a TV tuner input and displays output to a television set, turning the source signal into content in a form that can then be displayed on the television screen or other display device. It is designed to be placed alongside or "on top" of a television set.
Digital subscriber line is a family of technologies that are used to transmit digital data over telephone lines. In telecommunications marketing, the term DSL is widely understood to mean asymmetric digital subscriber line (ADSL), the most commonly installed DSL technology, for Internet access.
Video on demand (VOD) is a media distribution system that allows users to access videos, television shows and films digitally on request. These multimedia are accessed without a traditional video playback device and a typical static broadcasting schedule, which was popular under traditional broadcast programming, instead involving newer modes of content consumption that have risen as Internet and IPTV technologies have become prominent, and culminated in the arrival of VOD and over-the-top (OTT) media services on televisions and personal computers.
In telephony, the demarcation point is the point at which the public switched telephone network ends and connects with the customer's on-premises wiring. It is the dividing line which determines who is responsible for installation and maintenance of wiring and equipment—customer/subscriber, or telephone company/provider. The demarcation point varies between countries and has changed over time.
Sky UK Limited, trading as Sky, is a British broadcaster and telecommunications company that provides television, internet, fixed line and mobile telephone services to consumers and businesses in the United Kingdom. It is a subsidiary of Sky Group and, from 2018 onwards, part of Comcast. It is the UK's largest pay-TV broadcaster, with 12.7 million customers as of the end of 2019 for its digital satellite TV platform. Sky's flagship products are Sky Q and the internet-based Sky Glass, and its flagship channels are Sky Showcase, Sky Max, and Sky Atlantic.
Digital cable is the distribution of cable television using digital data and video compression. The technology was first developed by General Instrument. By 2000, most cable companies offered digital features, eventually replacing their previous analog-based cable by the mid 2010s. During the late 2000s, broadcast television converted to the digital HDTV standard, which was incompatible with existing analog cable systems.
A business telephone system is a telephone system typically used in business environments, encompassing the range of technology from the key telephone system (KTS) to the private branch exchange (PBX).
Internet Protocol television (IPTV), also called TV over broadband, is the service delivery of television over Internet Protocol (IP) networks. Usually sold and run by a telecom provider, it consists of broadcast live television that is streamed over the Internet (multicast) — in contrast to delivery through traditional terrestrial, satellite, and cable transmission formats — as well as video on demand services for watching or replaying content (unicast).
Electronic programming guides (EPGs) and interactive programming guides (IPGs) are menu-based systems that provide users of television, radio, and other media applications with continuously updated menus that display scheduling information for current and upcoming broadcast programming. Some guides also feature backward scrolling to promote their catch up content. They are commonly known as guides or TV guides.
GCI Communication Corp. (GCI) is a telecommunications corporation operating in Alaska. Through its own facilities and agreements with other providers, GCI provides cable television service, Internet access, wireline (networking), and cellular telephone service. It is a subsidiary of Colorado-based company Liberty Broadband, a company affiliated with Liberty Media that also owns a 26% interest in Charter Communications, having been originally acquired by Liberty in 2015.
An intercom, also called an intercommunication device, intercommunicator, or interphone, is a stand-alone voice communications system for use within a building, small collection of buildings or portably within a small coverage area, which functions independently of the public telephone network. Intercoms are generally mounted permanently in buildings and vehicles, but can also be detachable and portable. Intercoms can incorporate connections to public address loudspeaker systems, walkie talkies, telephones, and other intercom systems. Some intercom systems incorporate control of devices such as signal lights and door latches.
Telenet Group N.V. is the largest provider of cable broadband services in Belgium. Its business comprises the provision of analog and digital cable television, fixed and mobile telephone services, primarily to residential customers in Flanders and Brussels. In addition, Telenet offers services to business customers all across Belgium and in Luxembourg under its brand Telenet Solutions.
In telecommunication, triple play is the provision of broadband internet, television, and telephony over a single connection. This approach emphasizes the supplier convergence of multiple services, aiming to enhance user convenience and streamline service delivery.
Cable television piracy is the act of obtaining unauthorized access to cable television services. It is a form of copyright infringement and a federal crime. Reception of cable television without authorization by a cable operator is forbidden by both federal and state laws. In Missouri, cable television piracy is usually a class A misdemeanor; if the service is $500 or more, it is classified as a class C felony.
Multichannel television in the United States has been available since at least 1948. The United States is served by multichannel television through cable television systems, direct-broadcast satellite providers, and various other wireline video providers; among the largest television providers in the U.S. are YouTube TV, DirecTV, Altice USA, Charter Communications, Comcast, Dish Network, Verizon Communications, and Cox Communications. The Telecommunications Act of 1996 defines a multichannel video programming distributor (MVPD) as "a person such as, but not limited to, a cable operator, a multichannel multipoint distribution service, a direct broadcast satellite service, or a television receive-only satellite program distributor, who makes available for purchase, by subscribers or customers, multiple channels of video programming", where a channel is defined as a "signaling path provided by a cable television system."
A cable converter box or television converter box is an electronic tuning device that transposes/converts channels from a cable television service to an analog RF signal on a single channel, usually VHF channel 3 or 4, or to a different output for digital televisions such as HDMI.
UPC was the largest cable operator in Switzerland with around 1.1 million residential and business customers and was formed in 1994 through the merger of several cable operators. UPC has been a subsidiary of Liberty Global from 2005 until its discontinuation in 2022.
Homes typically have several kinds of home wiring, including electrical wiring for lighting and power distribution, permanently installed and portable appliances, telephone systems, heating or ventilation system control, and increasingly for home theatre and computer networks.
The distribution of cable television around the world:
