The Class of Service Settings page is used to assign the defined classes to a conference extensions.
To use Class of Service feature it should be enabled from the Class of Services page.The Go to Class of service link leads to the Class of Services page where the class of services can be configured.
The Go to Call Routing Table link leads to the Call Routing Table page where the call routing rules can be assigned to a certain class of service(s). The classes defined in the Class of Services page will appear on this page to assign the conference extensions to a certain class of service(s).