Call Center with Open Source Software

For about 8 months now I have been in a Business Analyst/Dialer administrator position for a call center. We undoubtedly use proprietary and expensive software for dialing and our computers are locked down so I don't have access to much except MS SQL and VB. (You have no idea how bad I want Ubuntu/Linux)

Though, being in this position, it's got me thinking. If you wanted to start your own call center using entirely open source software, how would you do it and what software would you use? How would you handle automated/predictive dialing, crm integration, recordings, agent desktops, telephony systems, voicemails, email, etc.

Thought it would be a good discussion.

Annoyance is best handled by proprietary software.

Hehe, nice. Managing Do Not Call lists are very important aspects of a call center as well.