If you have IP connectivity to your PBX, then from the TM Server, and from the main TM Navigator window, click on Utilities, and select Data Buffering & Access from the list.
When the DBA application window opens select File --> New Session.
Select the system you want to monitor from the system tree and click OK.
In the Session Properties window make sure all of the appropriate fields are filled out for your system, and the type(s) of data you want to collect have their check boxes checked.
Click on the Connect Now button to start the session.
A new window should open with the system name you are connected to with the text '(Connected)' in the windows title bar. The data will be stored in the file 'detail1.img' located in the system folder in the 'Common Data' TM folder. It may take a while for the file to show up, so don't panic if it's not immediately visible, especially if you are only collecting traffic.
For Traffic collection, open a system window for the system you are working with and navigate to the Traffic Analysis application.
Choose File --> Traffic Data Collection. And check the 'Schedule Traffic Parse' check box then click OK.
Fill out the Scheduling window. Choose an appropriate interval (I use Daily) for when TM should parse the traffic reports. Click OK.
Your job should now be in the scheduler, and will run based on how you filled out the window.
CDR is a little more complicated, but not much.