i did not write this howto, also i have no access to change it anyway.
To use in extensions.conf is:
[btsctrl]
exten => _02X.,1,GotoIf($[${CALLERID(name)} != ""]?4)
exten => _02X.,2,Set(CALLIDORIG=${CALLERID(num)})
exten => _02X.,3,Set(CALLERID(num)=02${CALLIDORIG})
exten => _02X.,4,Dial(LCR/GSM/${EXTEN:2},120)
So can I define a prefix (02) for mobiles and forward the calls to
LCR.
Maybe help someone other having my problem.
I suggest Andreas Everberg to update his HowTo...