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Is eMTA phone modem required?

Would it be possible to use an ethernet based telephone VoIP adapter with Cox Voice?  Or do you need to use a coax phone modem?  If the phone modem is required and I buy a docsys 3.1 from the cox certified list, will Cox be willing to activate it for voice?

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  • You will need to use Cox's voice modem for telephone service. You can use your OWN modem for Internet, which is what I do, I have a Cox DPC3212 modem for telephone service and I use my personal DG2460 modem for Internet, though I will be upgrading soon.

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