But you can also try this:
No Computer Required
Transfer Your Current Number
FREE Local & Long Distance Calls
FREE Directory Assistance
FREE Phone Number
FREE Call Waiting
FREE Voicemail & Caller ID
FREE International Calling to the U.S.
Stay away from MagicJack. Quality control is not business class.
My wife tried it and went through three devices before she gave up.
OOMA is a little better.
I would trust Vonage as well.
We have cable and it has been great.
Our bills have decreased considerably.