gta02, 2007.2: calling w/ headset

Mon Jul 21 22:36:09 CEST 2008

i just plugged the headset in to try calling my voice box. while the sound 
is loud enough w/h headset, in the headset it was some low mumbling.
while the box mumbled i tried alsamixer but none of the sliders changed 
anything!
i never really understood alsa and those state-files are not really 
bedtime stories -- but i think regardlessly what the current state states, 
alsamixer should change that, right?
in contrast, while listening to music the alsamixer indeed changes the 
volume on the headset.
do i need to enable somth?