[from-did]
exten => 972775654199,1,Dial(SIP/100,20)
exten => 972775654199,2,VoiceMail(972775654199)
exten => 972775654199,3,PlayBack(GoodBye)
exten => 972775654199,4,Wait(2)
exten => 972775654199,5,HangUp()