[root@tdm-1 asterisk]# more /etc/zaptel.conf 
# span,clock-source,lbo,framing,coding,yellow
# span = Number (1-4)
# clock-source = 0 internal, 1 recovered, 2 secondary
span=1,1,0,esf,b8zs
dchan=24
bchan=1-23

span=2,2,0,esf,b8zs
dchan=48
bchan=25-47

span=3,3,0,esf,b8zs
dchan=72
bchan=49-71

span=4,4,0,esf,b8zs
dchan=96
bchan=73-95

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

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

#span 1 = channels 1-24
#span 2 = channels 25-48
#span 3 = channels 49-72
#span 4 = channels 73-96
#clear=1-24

loadzone=us
defaultzone=us


/etc/asterisk/zapata.conf

# span,clock-source,lbo,framing,coding,yellow
# span = Number (1-4)
# clock-source = 0 internal, 1 recovered, 2 secondary
span=1,1,0,esf,b8zs
dchan=24
bchan=1-23

span=2,2,0,esf,b8zs
dchan=48
bchan=25-47

span=3,3,0,esf,b8zs
dchan=72
bchan=49-71

span=4,4,0,esf,b8zs
dchan=96
bchan=73-95

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

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

#span 1 = channels 1-24
#span 2 = channels 25-48
#span 3 = channels 49-72
#span 4 = channels 73-96
#clear=1-24

loadzone=us
defaultzone=us
[root@tdm-1 asterisk]# cat /etc/asterisk/zapata.conf
; Zapata telephony interface
;
; Configuration file

; Zap/g1 = Inbound from X/O - from-xo
; Zap/g2 = Outbound to X/O - to-xo
; Zap/g3 = Outbound to Easton - to-easton

[channels]
; Inbound from XO
faxdetect=incoming
context=from-xo
switchtype=national
signalling=pri_cpe
usecallerid=yes
hidecallerid=no
callwaiting=yes
usecallingpres=yes
callwaitingcallerid=yes
threewaycalling=yes
transfer=yes
cancallforward=yes
callreturn=yes
echocancel=256
echotraining=yes
rxgain=3.0
relaxdtmf=yes
;txgain=-0.0
group=1
callgroup=1
pickupgroup=1
immediate=no
channel => 1-23

; Outbound to XO
faxdetect=no
context=to-xo
switchtype=national
signalling=pri_cpe
usecallerid=yes
hidecallerid=no
callwaiting=yes
usecallingpres=yes
callwaitingcallerid=yes
threewaycalling=yes
transfer=yes
cancallforward=yes
callreturn=yes
echocancel=256
echotraining=yes
rxgain=3.0
relaxdtmf=yes
;txgain=-5
group=2
callgroup=2
pickupgroup=2
immediate=no
channel => 25-47

; Outbound to Easton
faxdetect=no
context=to-easton
switchtype=dms100
signalling=pri_cpe
usecallerid=yes
hidecallerid=no
callwaiting=yes
usecallingpres=yes
callwaitingcallerid=yes
threewaycalling=yes
transfer=yes
cancallforward=yes
callreturn=yes
echocancel=256
echotraining=yes
;rxgain=+0.21
relaxdtmf=yes
;txgain=-0.0
group=3
callgroup=3
pickupgroup=3
immediate=no
channel => 73-95
;channel => 1-23,25-47,49-71

;channel => 73-95
;channel => 1-23
;channel => 1-23,25-47,49-7