Asterisk (discovered via
this
Jon Udell post) is a complete PBX in software. It runs on Linux and
provides all of the features you would expect from a PBX and
more.
Quoting from the Asterisk home page:
Asterisk does voice over IP in three protocols, and can
interoperate with almost all standards-based telephony equipment
using relatively inexpensive hardware.
Asterisk provides Voicemail services with Directory, Call
Conferencing, Interactive Voice Response, Call Queuing. It has
support for three-way calling, caller ID services, ADSI, SIP and
H.323 (as both client and gateway).
Check the Features
section for a more complete list.
Naturally, this got me thinking about Skype; could Asterik and
Skpe be meshed into something out of this world (Sykype, WiFi, and
Asterisk)? But Skype isn't Open Source, so this would have to be
something the Skype team would want to embark upon I guess?
As I pondered I searched further, and stumbled across this Open
Source competitor of