Filed under: Features, Misc. GadgetsEach week Ross Rubin contributes Switched On, a column about technology, multimedia, and digital entertainment:
Inventions and incentives have fueled the those using voice over IP to battle the imposing inertia of landline incumbents, as well as the cellphone's continued cannibalization of long distance. The list of disruptive newcomers is long: cable companies offer adapter boxes for analog phones; a variety of companies have extended Skype via solutions that are both tethered to the PC and that operate over WiFi networks; and recently,
