“Is this modem will work with Optimum with phones line?”

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• This will only work with Xfinity voice.

  Answered by RayP 4 years ago

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• Certified XFINITY Internet & Voice Service Compatibility CM1150V is certified to work flawlessly with Xfinity by Comcast.* Two integrated telephone lines support 3-way conference calling, caller ID, call forwarding, and more enhanced calling features. Automatically prioritizes voice over Internet to ensure call clarity. *Not compatible with Verizon, AT&T, CenturyLink, DSL providers, DirectTV, DISH and non-Xfinity bundled voice services.

  Answered by RayP 4 years ago

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