Well currently I am running PBX in a flash 22.214.171.124 on an stock Dell Dimension 3000.
I’ve added the following components:
Incredible PBX 3
Incredible Fax 2
and ddclient (for dyndns registration)
I currently have only softphones for extensions.
I am currently using X-Lite, ZOIPER Communicator, Hylafax Client (for windows 7), and Sipdroid (sip client for android).