[Asterisk-Users] Exclude prefixes

[Thomas Haeger]

Hi all,


i have following entries in my extensions.conf:


[demo]

exten => _.,1,Dial,Modem/g1:${Exten}
exten => _.,2,Congestion


I think this should make it possible to dial every number over the Modem/g1
line.
But some prefixes like 0190 etc. should better not be possible.


How can i exclude especially prefixes ?



Thanks for help,

Thomas.