I have an epygi qx20 and yealink t23g phones
It will all work fine for 6 plus hours then suddenly we will no longer hear voices from incoming calls
The callers can hear us but we hear nothing
If we call out we have the same problem
After turning the qx20 off and then back on and waiting for the phones to connect we are all good again for a few hours till it goes off again
This happens 3/4 times a day
There is nothing in the system logs to show what is happening
My router settings have udp ports 6000-6035, 6037 to 6255, and 5000 to 5500 open
Any advice would help
Thanks in advance