I'm considering changing my regular home phone service (phone co.) to Cable Telephone (Comcast) or possibly a VoiP service like Skype or Sunrocket. Comcast says a big advantage of their service is the battery backup which keeps the service available for 8 hours if power goes out. Otherwise I think it's just the same as having the regular phone service - no special phones, all extentions work, etc. Skype & Sunrocket are a LOT cheaper, but are they better? Worse? Some questions about VOIP services before I take the plunge: With VoiP will I totally lose phone service if my power or my internet connection goes out? Even though we have cable internet, sometimes it is really, really slow. How would that affect a VoiP phone service like Skype? I'm sure you'd lose service if power fails, or if your computer or modem craps out. Has this been a problem for you? Do all your existing extentions work? Is sound quality great? Other advantges or disadvantages? THANKS!!