/etc/zaptel.conf:

# Autogenerated by /usr/local/sbin/sangoma/setup-sangoma -- do not hand edit
# Zaptel Channels Configurations (zaptel.conf)
#
loadzone=us
defaultzone=us

#Sangoma A101 port 1 [slot:4 bus:2 span: 1]
span=1,0,0,ccs,hdb3
bchan=1-15,17-31
dchan=16

/etc/asterisk/zapata.conf:

;autogenerated by /usr/local/sbin/config-zaptel  do not hand edit
;Zaptel Channels Configurations (zapata.conf)
;
;For detailed zapata options, view /etc/asterisk/zapata.conf.orig

[trunkgroups]

[channels]
context=default
pridialplan=unknown
usecallerid=yes
hidecallerid=no
callwaiting=yes
usecallingpres=yes
callwaitingcallerid=yes
threewaycalling=yes
transfer=yes
canpark=yes
cancallforward=yes
callreturn=yes
echocancel=yes
echocancelwhenbridged=yes
relaxdtmf=yes
rxgain=0.0
txgain=0.0
group=1
callgroup=1
pickupgroup=1

immediate=no
#include zapata_additional.conf
#include zapata-auto.conf

;Sangoma A101 port 1 [slot:4 bus:2 span: 1]
switchtype=5ess
context=from-zaptel
group=0
signalling=pri_cpe
channel => 1-15,17-31