Bei mir dann wohl so:
[webde_out]
exten => _0.,1,System(/opt/etc/asterisk/start_netlimiter.sh)
exten => _0.,2,Dial(SIP/${EXTEN}@webde,60,trg)
exten => _0.,3,Congestion
exten => _0.,4,Busy
exten => _0.,5,Hangup
exten => h,6,System(/opt/etc/asterisk/stop_netlimiter.sh)
MFG SkiRitchy