I have a bit of an issue with the audio quality. It behaves random.
My phone is a Samsung S5 neo
I fixed already the ports and did a port forwarding in my rooter.
so if i make a call, the quality is everything from perfect, bad qualityor no audio one or two ways.
if it works it may work for 2-3 calls and then, sometimes within the call, it stops again.
after a few minutes, without any setting change, still sitting on my desk, it works again.
thanks for your help