Before you purchase this device keep in mind that your ability to make free phone calls is wholly dependant on the ITSP that you are using.  In this review I used Dialpad.com, and unfortunately Dialpad only allows you to make calls to USA phone numbers.  Furthermore, not all numbers can be reached, usually the location that you are trying to call has to be near a major city to be serviced, if at all.  To make international calls you will have to use a service from an ITSP such as Deltathree (www.deltathree.com)  And in this case, Deltathree charges you various rates to various international locations.  Nonetheless the rates are by far superior to Sprint or your local long distance phone service provider. 

Conclusion:

While I was not too impressed with the IPW or Dialpad.com one thing does remain certain, this product is an incredible money saver for people that have high band width internet, and also have a great need for saving money on long distance phone calls to the USA.  This device does work as advertised, and if you fall into the fairly common category of a constant long distance gabber, then the IPW + Dialpad.com combination will save you money within a few weeks of usage.  If you do not make many long distance calls, then I would not recommend this product for you.  Kudos goes to Actiontec for producing a product that actually does what it sets out to doing.