[incoming]
exten => s,1,Answer()
exten => s,2,Background(enter-ext-of-person)
exten => s,3,Wait(2)
exten => s,4,Hangup()
exten => 1,1,Playback(digits/1)
exten => 1,2,Goto(incoming,s,1)
exten => 2,1,Playback(digits/2)
exten => 2,2,Goto(incoming,s,1)