AT&T filed a complaint with the FCC, charging that Cablevision Systems is improperly withholding broadcast rights to "must have" sports programming that AT&T wants to be able to offer on its U-verse service in Connecticut.

Cablevision and its Rainbow Media Holdings subsidiary, own the Fox Sports Network New York, Madison Square Garden Network and Fox Sports Network New England. The content in dispute includes games played by the New York Knicks, Boston Celtics, New York Rangers, New York Islanders and New Jersey Devils.

AT&T is complaining that Cablevision is withholding the programming for competitive reasons.

Cablevision's official response is "We have reached programming agreements with a broad range of distributors including DirecTV, Echostar, Verizon, RCN and even AT&T itself, but have outstanding questions regarding AT&T's violation of prior distribution agreements and about certain aspects of AT&T's technology and the protection of our programming."