How to get a ISDN line on a Fritz! card into the OP

hi,

i try to get buttons for the ISDN line into the Operator Panel. i fould something like this on the web:

[CAPI[ISDN1/1234]]
Position=54
Label="ISDN 1"
Extension=-1
Icon=3
Context=capi-in

if i use that the button does stay green (idle), i also understand this is only for incoming calls. how does it look like for outgoing calls ?

any ideas ?

capi.conf

[general]
nationalprefix=0
internationalprefix=00
rxgain=0.8
txgain=0.8
language=en

[ISDN1]
isdnmode=msn
incomingmsn=1234
controller=1
group=1
softdtmf=on
relaxdtmf=on
accountcode=
context=capi-in
echocancelold=yes
devices=2

regards
Jan