zaptel.conf:
fxsks=1-2
fxoks=3-4
loadzone=us
defaultzone=us

zapata.conf:

[channels]
switchtype=national
signalling=fxo_ks
rxwink=300              ; Atlas seems to use long (250ms) winks
usecallerid=yes
hidecallerid=no
callwaiting=yes
usecallingpres=yes
callwaitingcallerid=yes
threewaycalling=yes
transfer=yes
cancallforward=yes
callreturn=yes
echocancel=yes
echocancelwhenbridged=yes
echotraining=yes
relaxdtmf=yes
rxgain=0.0
txgain=-2.0
group=1
callgroup=1
pickupgroup=1
immediate=no
musiconhold=default


context=thumim-fxo
signalling=fxs_ks
channel = 1-2

context=thumim-fxs
signalling=fxo_ks
channel = 3-4

;group=2
;callgroup=2
;pickupgroup=2
;context=incoming
;signalling=fxs_ks
;channel = 5-8