I am having some trouble getting a clearOne analog max wireless conference phone to ring behind an Avaya CM 6.0 switch. Under emulation, thru a call trace, the call is going thru. When you call the conference phone number, wait a few seconds, you can pick up the line by pressing the appropriate 'call' button', but there is no ring. The phone type is set to 2500. I haven't tried a regular POTs line yet. Any thoughts?