extensions.conf
; Static extension configuration files, used by
; the pbx_config module.
[general]
static=yes
writeprotect=no
[IN_1501853]
exten => 1501853,1,Wait(1)
exten => 1501853,2,Answer
exten => 1501853,3,Playback(demo-congrats)
exten => 1501853,4,Hangup
sip.conf
...