extensions.conf:


[upstairs]
exten => 911,1,Dial(Zap/g1/ww911)
exten => _Nxxxxxx,1,Dial(Zap/g1/ww${EXTEN})
exten => _1800Nxxxxxx,1,Dial(Zap/g1/ww${EXTEN})
exten => _1866Nxxxxxx,1,Dial(Zap/g1/ww${EXTEN})
exten => _1877Nxxxxxx,1,Dial(Zap/g1/ww${EXTEN})
exten => _1888Nxxxxxx,1,Dial(Zap/g1/ww${EXTEN})
exten => _1NxxNxxxxxx,1,Set(NUMBER=${EXTEN})
exten => _1NxxNxxxxxx,2,Wait(1)
exten => _1NxxNxxxxxx,3,Background(agent-pass)
exten => _1NxxNxxxxxx,n,Disa(/etc/asterisk/disaaccounts)
exten => _1NxxNxxxxxx,n,Playback(tt-monkeys)
exten => _1NxxNxxxxxx,n,Hangup
exten => i,1,Playback(invalid)
exten => i,n,Goto(upstairs,_1NxxNxxxxxx,3)