System: Yeastar S20 (126.96.36.199) with SNOM D365/D375 phones
Currently, we are not able to have 2 calls simultaneously, because the CPU usage is >100% and the second call gets garbled. A single call causes 60-100% CPU usage.
We don't know where this problem comes from suddenly but we deperately need a quick solution.
EDIT: Reboot has been performed, of course, and does not solve the problem.