Asterisk Live!
Asterisk PBX is Linux based, open
source PBX software that provides voice over IP in three protocols and is
interoperable with most standards-based telephony equipment using
comparatively inexpensive hardware. If you want an easy way to play around
with Asterisk check out Asterisk Live! This distribution is available as a
Live CD and a Compact Flash
install. The Getting Started With
Asterisk guide provides an excellent starting point for both Asterisk
and Asterisk Live!