[root@ivr1 ~]# cat /etc/zaptel.conf
span=1,1,0,esf,b8zs
bchan=1-23
dchan=24

span=3,1,0,esf,b8zs
bchan=49-71
dchan=72

loadzone=us
defaultzone=us


[root@ivr1 ~]# cat /etc/asterisk/zapata.conf
[channels]
switchtype=national
pridialplan=national
prilocaldialplan=national
musiconhold=default
language=en
signalling=pri_cpe
usecallerid=yes
hidecallerid=no
callwaiting=yes
usecallingpres=yes
callwaitingcallerid=yes
threewaycalling=yes
transfer=yes
cancallforward=yes
callreturn=yes
echocancel=yes
echocancelwhenbridged=yes
overlapdial=yes
rxgain=0.0
txgain=0.0

group=1
context=ivr
channel => 1-23

group=3
context=ivr
channel => 49-71
[root@ivr1 ~]#