I've installeed the Mac version of Unified Personal Communicator for a customer. The "Presence" and "Chat" part works fine but the "Softphone" doesn't work. If I call an IP Phone; it rings and when I pick up the phone there is no voice (both-way). There is no issue with the Windows version of Unified Personal Communicator on the same machine (Mac Pro with double boot option).
I hope someone can help me how to solve this issue.