University dumps Cisco VoIP for open-source Asterisk

as software technology becomes more of a commodity:

University dumps Cisco VoIP for open-source Asterisk

Some organizations consider taking the plunge off of big iron PBX
platforms into IP telephony as being pretty daring, but that's nothing
compared to what Sam Houston State University (SHSU) is doing. The
south Texas school is boldly moving thousands of users off a Cisco VoIP
platform to an open-source VoIP network based on Asterisk.