zaptel.conf

span=1,1,0,esf,b8zs
span=2,2,0,esf,b8zs
span=3,3,0,esf,b8zs
span=4,4,0,esf,b8zs

bchan=1-23,25-47,49-71,73-95
dchan=24,48,72,96

loadzone = us
defaultzone = us

zapata.conf

[channels]

switchtype=national
signalling=pri_cpe
pridialplan=unknown
prilocaldialplan=unknown
usecallerid=yes
callerid=asreceived
echocancel=yes
echocancelwhenbridged=yes
echotraining=yes
rxgain=0.0
txgain=0.0
musiconhold=native
language=en
context=local

group = 1
channel => 1-23
channel => 25-47

switchtype=national
signalling=pri_net
pridialplan=unknown
prilocaldialplan=unknown
usecallerid=yes
callerid=asreceived
echocancel=yes
echocancelwhenbridged=yes
echotraining=yes
rxgain=0.0
txgain=0.0
musiconhold=native
language=en
context=local

group = 2
channel => 49-71
channel => 73-95

extensions.conf

[general]
static=yes
writeprotect=no

[globals]
CONSOLE => Console/dsp
IAXINFO => guest
TRUNKMSD => 1

[local]

;------------------  Local Numbers redirected to T@W Server -----------------
exten => 8017037001,1,Dial(Zap/g2/${EXTEN:0})