ADSL - (Asymmetric Digital Subscriber Line) - A standard that allows a high data rate signal (6 megabits per second or more.) It has more bandwidth for downloading than uploading. VDSL technology can provide six times the bandwidth compared to typical technology which is being used today, (often ADSL.)
ADSL-based ITV Service - (Asymmetric Digital Subscriber Line) - These high-speed phone based services offer much the same as do broadband cable connections. This include VOD, games, TV-based Internet etc.
ADSL-based VOD - (a.k.a. TV-over-ADSL, Broadband TV, Broadband-based TV. Associated with ITV-over-DSL) - VOD received through broadband phone lines/connections.