Blizz automaticly changes audiosettings

Hi there,

we use Blizz with audio-partners via voip and telephone. The problem is, when someone joins via phone that the microphone will automaticly changes from a normal level to a very low level - and we have almost no audiosignal.

Is it possible to deaktivate the automatic audiolevel?

Settings in OS (Win7 64) it has no impact when changes are made.

thanks for your help in advance