10.41.5.1. Terminal Configuration 
IMPORTANT:
OpenStage 60/80 related settings, like volume
or ring type, are not controlled by the system. So values set via AMO
ACTDA/AMO KCSU are not used.
OpenStage terminals are configured in the same way as optiset terminals:
ADD-SBCSU:STNO=3100,OPT=OPTI,CONN=DIR, PEN=number,DVCFIG=OPTISET,COS1=number, COS2=number,LCOSV1=number,LCOSV2=number, LCOSD1=number,LCOSD2=number,HEADESET=WITHIND;
IMPORTANT:
HEADSET=WITHIND must be configured
to get the correct display message in case the headset key is pressed
and no headset is connected.