Ask any geek: Asterisk is the new hotness. The open source voice-over-IP software is revolutionizing the world of Private Branch Exchanges, or PBXs. You’ve used a PBX before, even if you don’t know what it is: every time you dial into an company’s call-receiving system and navigate a series of menus through the use of your phone’s keys, you’re working within a PBX system. The same goes for when you check your voicemail at the office, or route a phone call to an extension one meeting room over.
PBXs used to be implemented via expensive hardware from unapproachable vendors. Asterisk is changing that. You can install the software on even a modestly specced machine, subscribe to an inexpensive VoIP provider like BroadVoice and be routing calls in no time — and doing it between a variety of data streams. Asterisk allows VoIP, SMS, fax, the Plain Old Telephone System and the internet to be stitched together with relative ease. It’s not exactly user-friendly (although there are GUIs that make it a bit less hostile), but it’s not rocket science either.
