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I have Cablevision optimum TV, internet and telephone service in Nassau County and I set this modem up yesterday and it worked fine. I disconnected the old modem, connected this one, then called their tech support. The tech support added this modem to my account and my TV, internet and telephone worked fine. I took the old modem to Cablevisions optimum store and returned it.
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Sorry, there was a problem. Please try again later.It works with Optimum fine after registering it with Cablevision.
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