== Starting Zap/1-1 at outbound,s,1 failed so falling back to exten 's'
  == Starting Zap/1-1 at outbound,s,1 still failed so falling back to context 'default'
Jan 18 15:47:28 WARNING[17894]: pbx.c:2347 __ast_pbx_run: Channel 'Zap/1-1' sent into invalid extension 's' in context 'default', but no invalid handler
    -- Hungup 'Zap/1-1'
  == Spawn extension (inbound, s, 3) exited non-zero on 'Zap/3-1'
    -- Hungup 'Zap/3-1'



; Zapata telephony interface
;
; Configuration file

[channels]

;
; Default language
;
language=en
echocancel=yes
echocancelwhenbridged=yes
echotraining=yes
echotraining=800
rxgain=0.0
txgain=0.0
usecallerid=yes
hidecallerid=no
callwaiting=yes
usecallingpres=yes
callwaitingcallerid=yes
threewaycalling=yes
transfer=yes
cancallforward=yes
callreturn=yes
busydetect=yes
faxdetect=incoming


;
; Default context
;
context=inbound

group=1
callerid=asreceived
signalling=fxs_ks
channel => 3
channel => 4

group=2
context=outbound

signalling=fxo_ks
callerid="Office" <0>
channel => 1

signalling=fxo_ks
context=doorphone
callerid="Door" <00>
immediate=yes
rxgain=5
channel => 2