In a borderless world, phone bills can seem irrational. If it costs nothing to e-mail colleagues overseas, why should talking to them be costly? Two very different new products offer potential remedies to international-calling issues. Vonage, the Internet phone service provider, is rolling its services into a little wi-fi handset. Designed by UTStarcom, it can hop onto any wi-fi network you have access to, including the networks for hire found at many airports and hotels.
Whenever you're connected to the Internet, you get all the phone services you get at home, even if you're not there. Friends and co-workers still just...
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