Check Microphone level, I think it’s too low
don’t put it at 100%, it’s a bad idea
generally 50% is correct
Notes:
EXT-Volume can’t help to to adjust the microphone level
with Gateway Website you can adjust it un real time for testing (tools section)
When done, report your value in EXT-Volume config and it will replace the values on startup
e0856805-3aaa-49d3-866e-a62c2ac7c3eb-image.png