If you want to watch real time, then use the BCM Monitor to monitor the incomming and outgoing calls. It can be downloaded from the client software page.
If you'd rather have reports, you can push CDR data to another machine on the network or ftp server. You can set this up under Services > Call Detail Recording. Click the context sensitive help menu to find out more details, but that will get you in the right place.
Without a third party software, you're going to be looking at a ton of raw data...it will be difficult to sort through without a third party software.