Verizon's future starts where the scuffed green floor ends on the second story of a windowless brick blockhouse in Baldwin Park, CA, a Latino community east of Los Angeles. Past that point, the building's old asbestos-filled floor tiles were removed in March and replaced with shiny white ones, marking the place where circuit switching, the method long used to connect one phone to any other, gives way to packet switching, the technology that makes the Internet so powerful. It's a project that promises to change Verizon's business -- and eventually, the way we all think about phone service.

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