To VOIP or not to VOIP

Yesterday I had a phone conference with Hadar Pedhazur of Opticality Ventures, during which Hadar mentioned that he's been using Asterisk, a Linux-based software PBX, with great success. Although Asterisk is VoIP-capable, Hadar's using cheap ($100) Digium cards to manage and route calls among his various business-related POTS lines. That really got my attention; I've long wanted such a capability. So I did some reading, and I also watched this presentation given by Digium's founder and Asterisk's developer, Mark Spencer.

[Jon's Radio]

I feel a rant about VOIP coming on. When I get some time to write. If the feeling hasn't passed.