Problem with Missed Calls messages after pickup and in queues

We have Yealink T48G phones and have following problem:
After pickup incoming call from other phone or calls in queue first phone show missed call message.
Can this disable and show missed calls only If no one has taken a call?
I have sent the problem to Yealink support and get the following answer:


Sorry the feature can’t be done via phone side.
It need to support in server side.

The phone won’t know the call be canceled or be picked up.
Only the server know, if you don’t want the first phone show missed call.
The server need send special message to phone, then the phone won’t show missed.

For this request, please contact with your server provider for help.

Unfortunately, I find the relevant settings in FreeePBX not. Can anyone tell me where are they?