[root@tel asterisk]# cat /etc/zaptel.conf

fxsks=1

loadzone=us
defaultzone=us

[root@tel asterisk]# cat zapata.conf

[channels]

context=default

usecallerid=yes

hidecallerid=no

callwaiting=yes

callwaitingcallerid=yes

threewaycalling=yes

transfer=yes

echocancel=yes

rxgain=5.0
txgain=5.0

group=1

immediate=no

context=main1
signalling=fxs_ks
channel => 1

[root@tel asterisk]# cat extconfig.conf
[settings]
;iax.conf => odbc,asterisk,sip_conf
extensions => odbc,ast_cnf,extensions_conf
;iaxfriends => odbc,asterisk,sip_conf
sipusers => odbc,ast_cnf,sip_conf
sippeers => odbc,ast_cnf,sip_conf
iaxusers => odbc,ast_cnf,sip_conf
iaxpeers => odbc,ast_cnf,sip_conf
queues =>  odbc,ast_cnf,queue_table
queue_members => odbc,ast_cnf,queue_member_table