# cat /etc/zaptel.conf
span=1,1,0,esf,b8zs
bchan=1-23
dchan=24



# cat /etc/asterisk/zapata.conf
[channels]
;
musichold=default
context=incoming
switchtype=dms100
signalling=pri_cpe
group=1
channel => 1-23
hidecallerid=no
callwaiting=yes
usecallingpres=yes
callwaitingcallerid=yes
transfer=yes
cancallforward=yes
callreturn=yes
;
; Echo Cleaning Attempts
;
;
echocancel=800
echocancelwhenbridged=yes
echotraining=128