THE ERROR
  -- Executing Dial("SIP/Bruna-f9b0", "Zap/g1/18005551212|45") in new stack
Sep 26 14:37:08 NOTICE[1259]: app_dial.c:764 dial_exec: Unable to create channel of type 'Zap'
  == Everyone is busy/congested at this time

;zapata.conf
[channels]
;
; Default language
;
language=en
;
; Default context
;
context=inbound

signalling=fxs_ks
language=en
context=outbound
echocancel=yes
echocancelwhenbridged=yes
;echotraining=yes
;echotraining=800
rxgain=0.0
txgain=0.0
group=1
channel => 1


signalling=fxs_ks
language=en
context=outbound
echocancel=yes
echocancelwhenbridged=yes
rxgain=0.0
txgain=0.0
group=1
channel => 2


;extensions.conf
[outbound]
;Force use of PSTN with "9" prefix, w/ or w/o "1" prefix
exten => _91NXXNXXXXXX,1,Dial(Zap/G1/${EXTEN:1},45)
exten => _9NXXNXXXXXX,1,Dial(Zap/G1/${EXTEN:1},45)