The service will only allow users to call other EarthLink customers, but the company says it expects to offer a paid service similar to SkypeOut within the next year.

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Although Bell's model chintzed out on the Caller ID, the 9620 allows your CID-enabled handsets to display Skype names as well as dial SkypeOut numbers directly from the phonebook or keypad.

ENGADGET: USRobotics USR9620 USB adapter VoIPs your old analog phones

But the company says more than 2 million people have signed up for its SkypeOut service since it launched in July 2004, and the last million of those have been added just since March.

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Skype's PR peeps are blasting out press releases about how SkypeOut (which lets you use Skype's VoIP software to make cheap calls to the regular phone lines) has finally reached one million users, but we're way more interested in the more stealthy news that they're testing a new beta which supports SkypeIn, which lets people with regular phone lines call you.

ENGADGET: SkypeIn in beta