Siemens C75 Operating Manual page 50

Headset
Only in conjunction with an original
Siemens headset. If an original
Siemens Headset is used the profile
is automatically activated when the
headset is plugged in.
Auto answer
(factory default: off)
Calls are accepted automatically af-
ter a few seconds (except where the
ringer is switched off or set to beep).
You should therefore be wearing the
headset.
Auto answer
If you do not notice that you phone has ac-
cepted a call, there is the danger that the
caller may eavesdrop.
Setup 49