Conclusion: From the "perspective of the call, of" I'm actually quite happy with it. My interlocutors are well understood, the volume is sufficient in my opinion. BUT: Everyone in my party has, without exception, immediately knew that I use a headset: The reasons were always "short interruptions" and a significant "reduction (audio) quality" called. Therefore: In my view, the audio quality of the headset was okay, the feedback from the other side, however, was always negative.
A direct comparison, ie change the headset from Nokia BH-105 during the call to Sony HBH-PV708 was immediately acknowledged with positive feedback. I am well aware that the Sony headset is about twice as expensive.
However, due to the mentioned reasons I shall still probably switch back to a higher-priced product ...
