I have installed a wireless network in my office using 3 Cisco Aironet 1200 Series AP's. I have the routers in the office ceiling with omnidirectional attenas attached to them. The routers have the same SSID's so users can go from AP to AP within the office. Connection seems pretty good however we still have some users that seem to get knocked off. I notice that some threads mention using different channels how do I set this up on the Cisco Aironets?