| Time Warner Cable office in Carlsbad, Calif. |
CBS-owned cable networks, including Showtime, are also going dark, a Time Warner Cable spokeswoman said.
The cable operator said it had agreed to extend talks until Tuesday morning. "Since then, CBS has refused to have a productive discussion," Time Warner Cable said in a statement.
"It's become clear that no matter how much time we give them, they're not willing to come to reasonable terms," it added.
CBS shot back that Time Warner Cable "conducted negotiations in a combative and non-productive spirit, indulging in pointless brinksmanship and distorted public positioning."
CBS is the No. 1 rated U.S. broadcast network with shows such as "The Big Bang Theory" and "NCIS."