zaptel.conf
-------------
span=1,1,0,esf,b8zs
bchan=1-11
dchan=24

defaultzone=us
loadzone=us

zapata.conf
-------------
[channels]

 switchtype=national
 context=Incoming
 signalling=pri_cpe
 echocancel=yes
 echocancelwhenbridged=yes
 callerid=asreceived
 group=1
 channel => 1-11