University of Pennsylvania’s 15,000-seat VoIP deployment will hum along on open-source software: SIP Express Router and Asterisk. Open source tools such as Asterisk and SIP Enterprise Router are ...

We didn’t just take a sip. We took a good long drink of SIP technology in this round of iLabs testing. We gathered more than 50 devices from five SIP server vendors and 13 SIP endpoint vendors to ...