Part-2 - is posted below!
The rest of the series is being delivered every week for 5 weeks!
Part 1 – Learn about Exchange 2010/OCS Integration features –
Part 2 – Learn about Exchange 2010 Unified Messaging features
Part 3 – Learn about OCS 2007 R2 Dial-in Conferencing
Part 4 – Learn about PIC Federation and the new XMPP Gateway
Part 5 – Gotuc.net OCS Portal for Developers and IT Pros