Immediately after the change I was asked by almost every customer, whether with my phone (the phone and the line remained unchanged) would be something wrong because you would understand me so bad.
Since this did not improve even after checking and trying all setting tehre, I telephone since re wired and without "complaints". Whether it's the voice, audio or Übertragungsqaulität ultimately does not matter. I was just so tired of being asked about it, that weighs not even the comfort.
A pity, but the good voice intelligibility for my opponent is more important than cable freedom at work.