A company called ooma is launching a new hardware-based VOIP device that plugs into your existing phone system and provides unlimited landline calling in the U.S. with no monthly fee. To learn more about this device listen to the following podcast between Jim Rapoza and Andrew Frame, CEO of ooma to get all the details. The ooma hub will cost about $400, and is suppose to be available in September.
The service also offers free unlimited voicemail, and has some other specialize features (more information is available in the podcast). There is support for international calling, but the rates are similar to Skype.