Hello, I just implemented Elastix PBX in my company. Looks like this: P4 1.8GHz + 2GB RAM + OpenVox A1200 8 pstn lines (incl. GSM gateway) 4 zap extensions 2 VOIP providers for outgoing connections about 30 extensions, mainly on Siemens 470IP and PAP2T fax service V-Tiger will be fully working in couple of weeks Installation was piece of cake. "Elastix without tears" book guided me like a kid. At the moment I'm very sastisfied. I'll report later, how it's going in practice.