Cheapest VOIP phone service?

With fax capability?

Also, how many phones can operate from the VOIP adapter?

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Get cheap voip essentials right here! Save big on operating costs. Voip is portable. All you need is your analog converter and you can plug into a computer anywhere in the world and make free phone calls! It is estimated that there will be 1.2 billion voip users by the year 2012. Businesses, get unlimited local and long distance inbound minutes and 5000 free outbound!