Mine

zaptel.conf
------------
loadzone = us
defaultzone=us
fxsks=1-2


zapata.conf
------------

[trunkgroups]

[channels]
language=en
context=default
switchtype=national
signalling=fxo_ks
usedistinctiveringdetection=yes
usecallerid=yes
cidsignalling=bell
hidecallerid=no
callwaiting=yes
usecallingpres=yes
callwaitingcallerid=yes
threewaycalling=yes
transfer=yes
canpark=yes
cancallforward=yes
callreturn=yes
echocancel=yes
echocancelwhenbridged=yes
rxgain=0.0
txgain=0.0
group=1
callgroup=1
pickupgroup=1
immediate=no