sample extensions
public ini v1 · immutable[general][default]exten => s,1,Answerexten => s,2,Background(enter-ext-of-person)exten => t,1,Goto(s,2)exten => 100,1,Dial(SIP/usernamehere)[general][default]exten => s,1,Answerexten => s,2,Background(enter-ext-of-person)exten => t,1,Goto(s,2)exten => 100,1,Dial(SIP/usernamehere)