Cablevision is ramping up the number of channels it makes available via a switched digital network. CableCARD customers have started receiving notification that the MSO is moving the VOOM HD networks to switched over the next couple months. The change means that CableCARD users will need an HD set-top to continue to receive the channels. Cablevision is offering them a free box for a year. Switched digital delivers linear digital channels only when viewers tune in to them, freeing up bandwidth. Impacted channels include: Animania HD, Equator HD, Family Room HD, Film Fest HD, Gallery HD, Gameplay HD, HDNews, Kung Fu HD, Monsters HD, Rave HD, Rush HD, Treasure HD, Ultra HD, Worldcinema HD and Worldsport HD.” Cablevision entered the world of switched digital in '06 by launching 60 intl channels across its footprint (the number has now grown to about 70).