I currently have 4 2960-48TT-L switches operating at a location. That location has implemented a Polycomm Video Conferencing System. We wish to implement COS on the LAN for the polycomm traffic. The switches have the LANBASE-M software and the software version is 12.2(35)SE5. I would think the first step would be to get the switch software to the newest level of 12.2(50)SE3. Is this the correct thinking? I have never configured COS on the LAN side (only the WAN side on routers) any help or documentation showing how to configure the COS on the switches would appreicated. What are some of the limitations and "gotchas" I should be aware of?