At least one cable operator is starting to comply with a federal law that has long required telecommunications carriers to help police conduct electronic surveillance, according to a source familiar with the company's plans.

Time Warner Cable is the first cable company to begin trying to adhere to the Communications Assistance For Law Enforcement Act, the source said. Cable companies are not yet required to comply with the 1994 wiretap law, but they see the writing on the wall.

Vernon Irvin, executive vice president at security vendor VeriSign, said during a recent interview that his company had signed a deal with a "major cable operator" in the United States to help it follow CALEA. He did not identify the provider, but the source tagged Time Warner as the company. A Time Warner representative did not have an immediate comment.

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