Internet Protocol television (IPTV) A system through which television services are delivered using the Internet protocol suite over a packet-switched network such as a LAN or the Internet, instead of being delivered through traditional terrestrial, satellite signal, and cable television formats.

Integrated reception system (IRS). IRS provides broadcast signals from multiple sources (typically digital television, FM radio, DAB digital radio and satellite TV) to multiple outlets, via a single aerial cluster and signal booster-distributor, most commonly in systems for communal housing, where one aerial cluster can replace many aerials serving individual dwellings (e.g. flats or apartments). IRS is the direct successor to MATV, which was the commonly employed method used to distribute analogue terrestrial TV and FM signals. Many landlords are now opting to replace MATV systems with IRS with the advent of digital TV and, also to reduce the clutter of satellite TV dishes that now adorn much communal housing.