The FCC seems have little or no control over regulation of decency 'standards' on cable. Over the air 'broadcast' is where they are empowered to regulate decency standards. It looks as though the FCC has no jurisdiction, whatsoever, to impose programming regulations on cable channels. That doesn't mean they aren't trying.
As far as broadcast channels, there is a distinction between obscene and indecent. Obscene is prohited at all times, while indecent is prohibited between 10PM and 6AM.
Definitions and (lots) more info:
“The Green Bay Packers never lost a football game. They just ran out of time.”