On the data sheet for the 1861 it states "Optimized QoS is provided for IP phone and desktop configurations. The QoS level helps ensure that voice over IP (VoIP) traffic takes precedence." however when I try to configure qos on the switch ports for a cisco phone it's not a recognized command (auto qos voip cisco-phone). I am running c1861-spservicesk9-mz.124-24.T. Is there something I am missing or is it just done different on this router and I haven't found the documentation yet?