When calling out from a WP820 i have no ring back, Then when the call connects I hear 3 beeps and then I am able to talk and the call works fine.
My misty glass ball says: There is definitely something wrong
Is this on all calls regardless of the number dialed?
What is the WP connected to for service?
Have you other phones connected to the same service and if so, do they also have the same issue?
Is the phone updated on firmware?
Was there any prompt on the LCD screen when the beeps happens? If this is happening for every call, I advise to go on the web UI and start a one click debug capture with the “capture trace” option enabled then perform the call as usual then download the trace. We can help assess the trace file to see if there’s any obvious issues.