I'm sure you get plenty of email talking about small units. But in this case, we are talking about Asterisk PBX. Aastra has a small form IP-PBX called the AstraaLink Pro 180. (Retails for about $899). Today, Tom Keating has the PIKA WARP Appliance for Asterisk Review. "The PIKA WARP Appliance isn't a turn-key Asterisk IP-PBX, but instead is a development platform that enables resellers and VARs configure Asterisk 1.4.x to their liking, and then offer a customized version of Asterisk through their distribution channel." It has a $725 price tag. PBX is just one way to start down the road to VoIP.