As @jkincaid points out, this is a Bandwidth.com company. Bandwidth.com has built up a whole country-wide internet backbone system of their own to carry VOIP t

As @jkincaid points out, this is a Bandwidth.com company. Bandwidth.com has built up a whole country-wide internet backbone system of their own to carry VOIP traffic (they carry Google Voice, for example), with lots of connectivity to the local area terminal points (I forget the jargon for that). We're really happy with Phonebooth.com (another Bandwidth initiative), who provide unlimited VOIP service (with a full virtual business PBX) to North America at $20/user/month. (And who apparently don't charge for calls to Europe (at least Ireland), as I found out recently.) It's perfect for our little 4-man distributed company; we each have a VOIP phone on our desks and can pretend we're all in the same office with extensions, etc. Bandwidth.com seems like a company to watch...