To plan the baseline, create a network map and list all of the subnetworks including all VoIP VLANs. You should have a strategy on how you are going to go about the process, including the time of day, whether you are going to capture wireless or wired traffic, and details about the location and what applications may be in use on a particular subnetwork.

Once planning is complete, we can then move on to the next step, which is where we actually capture network traffic.