Over the past few days Verizon has been running ads on powerful New York Radio stations such as Sports Radio 66 WFAN suggesting that small businesses shouldn't switch to Optimum Voice, the VoIP service from Cablevision.

The ads suggest that Optimum Voice is unreliable, causing small businesses that switch their phone service to them to lose business and ultimately fail.

I have no information about the reliability of Optimum Voice, but I think it's very interesting that Verizon is taking direct aim at Cablevision in the small business telephone service market. Is it possible that Cablevision has made a significant incursion into a profitable part of Verizon's core business in the New York area?

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