Mediacom

I would like to add Voicemail to my Mediacom phone, but cannot find any pricing on the Rate Card lookup. How much is Voicemail? 

Tech advised that there isn't power running to the doorbell. Do we have any options for me? I had thought it would run on battery, but I must be mistaken.

Does Mediacom provide free Malware and Antivirus software? Where do I go to install it?

Why cant I access my webmail from outside the USA?