I’ve tested Sangoma H20 on two PCs and both face the same problem.
Looks like the headset goes in a powersave mode when no audio is received, but sometimes happens that the base can’t wake up the headphone, so call is processed because Zulu finds the base connected, but there’s no audio between base and headphone.
Tried different audio configuration in both Zulu and Win10 settings but still happens when doing two or more calls in a row.
What can I do?