[trunkgroups]
; define any trunk groups
[channels]
; hardware channels
; default
nationalprefix=1
internationalprefix=011
usecallerid=yes
hidecallerid=no
callerid=asreceived
cidsignalling=bell
cidstart=ring

usedistinctiveringdetection=yes
distinctiveringaftercid=yes
; double ring (need to receive faxes)
dring1=339,0,0
dring1context=faxreceive
dring2=339,110,0
dring2context=faxreceive
; single ring
;dring3=0,0,0
;dring3context=default

callprogress=yes
progzone=us

callwaiting=no
threewaycalling=yes
transfer=yes
echocancel=yes
echotraining=yes
busydetect=yes
busycount=5
hanguponpolarityswitch=yes
; define channels
context=incoming        ; Incoming calls go to [incoming] in extensions.conf
signalling=fxs_ks       ; Use FXS signalling for an FXO channel
channel => 1            ; PSTN attached to port 1