/etc/asterisk/zapata.conf

[trunkgroups]

[channels]

usecallerid=yes
hidecallerid=no
callwaiting=no

threewaycalling=no
transfer=yes
echocancel=yes
echotraining=yes


context=incoming
signaling=fxs_ks
immediate=yes

channel => 4








/etc/asterisk/extensions.conf

[globals]

[general]
autofallthrough=yes


[default]
exten => s,1,Answer()
exten => s,2,SayDigits(987654)
exten => s,3,Echo()

[incoming]

exten => s,1,Answer()
exten => s,2,Echo()