Cablevision rolls out super-fast Internet access

Faster speeds will make it easier to watch video programing over the Web, but there are industry concerns that they might also make it easier for customers to 'cut the cord' of traditional cable TV subscriptions.

"The cable operators are trying to walk a fine line," said Craig Moffett, analyst at Sanford Bernstein.

Moffett said the challenge for the operators is how to preserve their current technology and speed advantage over phone companies without harming their core video offering.

"They don't want to provide so much bandwidth that they foster the means to bypass their core service," he said.

Cablevision is also doubling the speed of its wireless Internet access to 3.0 megabits per second using Wi-Fi technology. The company offers the service for free to Cablevision subscribers using their laptops and other mobile devices around certain locations in its local area.

(Reporting by Yinka Adegoke; Editing by Richard Chang)