In response to Verizon Wireless' announcement last week that it would open up its network, AT&t made it known that it is opening up its wireless network to outside devices.

The problem how with this announcement is that it's always how AT&T worked. AT&T users have always been able to use almost any GSM phone on the company's network and swap SIMs. The announcement is more of a PR offensive. That may be because of the push by the FCC to require carriers on the 700MHz spectrum to provide open access to their networks. Or it might be to get in on the love being shown Verizon and Google for their embrace of "openness."

Whatever the motivation, though, all these changes on behalf of the major cell carriers are good news for consumers.

AT&T, the nation's leading wireless carrier, was selected as the Best Wireless Provider in the World in the 2007 Reader's Choice Best in Business Travel Awards, conducted by Business Traveler magazine. Now in its 19th year, the annual survey gives readers the chance to voice their opinion on those companies that have made their business travels more enjoyable.

T&T boasts a larger selection of global devices than any other carrier. AT&T provides cost-effective packages, including the AT&T World Traveler plan, which offers discounted rates in more than 80 countries for $5.99 a month. It also offers a Wireless Travel Guide for customers so that they can plan ahead and see if they'll have coverage based on their device and itinerary.