FWIW, I'd posted:
"Calling From Abroad at Reasonable Rates" over in "TravelBuzz" yet it now appears to have been moved, yet the link is seemingly not working so, FWIW...
http://travel2.nytimes.com/2006/01/0...el/01prac.html
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I sincerely hope that this is of some help. Again, just watch out for the hidden surcharges, if any, as they can really add up.
Mark