# cat zaptel.conf  | grep -v "#"

loadzone=br
defaultzone=br

span=1,0,0,ccs,hdb3

span=1,1,0,cas,hdb3
cas=1-15:1101
dchan=16
cas=17-31:1101


# cat unicall.conf
[channels]

context=e1-inline
usecallerid=yes
hidecallerid=no
threewaycalling=yes
transfer=yes
cancallforward=yes
callreturn=yes
echocancel=yes
echocancelwhenbridged=yes
rxgain=0.0
txgain=0.0
relaxdtmf=yes
callgroup=1
pickupgroup=1
immediate=no
callerid=asreceived
musiconhold=default
protocolclass=mfcr2
protocolvariant=br,20,4
protocolend=cpe
group=1
channel => 1-15
;channel => 16-31
;channel => 1-31
protocolclass=mfcr2