Oct  6 23:14:03 WARNING[6249]: chan_zap.c:10874 setup_zap: Ignoring signalling
Oct  6 23:14:03 ERROR[6249]: chan_zap.c:10305 setup_zap: Unable to reconfigure channel '4'
Oct  6 23:14:03 WARNING[6249]: chan_zap.c:11067 reload: Reload of chan_zap.so is unsuccessful!

zaptel.conf

fxsks=4
loadzone = cl
defaultzone=cl

zapata.conf

[root@asterisk asterisk]# cat zapata.conf
[trunkgroups]

[channels]
usecallerid=yes
hidecallerid=no
callwaiting=no
usecallingpres=yes
threewaycalling=yes
transfer=yes
echocancel=yes
echotraining=yes


context=incoming
signalling=fxs_ks
channel => 4