loadzone = us
defaultzone=us

# span(num),(timing),(LBO),(framming),(coding)
#span=1,1,5,esf,b8zs
#span=2,2,5,esf,b8zs
#span=3,3,5,esf,b8zs
span=4,4,5,esf,b8zs
/etc/zaptel.conf:
=====================

#channels for Span1
#bchan=1-23
#dchan=24

#channels for Span2
#bchan=25-47
#dchan=48

#channels for Span3
#bchan=49-71
#dchan=72

#channels for Span4
bchan=73-95
dchan=96


/etc/asterisk/zapata.conf:
===00=====================00

[channels]

switchtype=ni1
pridialplan=local
prilocaldialplan=local
internationalprefix=00
;nationalprefix=0
hidecallerid=yes
usecallingpres=yes
busydetect=no   ; not need on pri
callprogress=no ; was yes but wiki says experimatley could be produce hangups
callwaitingcallerid=yes  ; show callerid on callwaitingcalls
echotraining=yes
echocancel=yes
echocancelwhenbridged=yes
overlapdial=yes
immediate=no
callerid=asreceived
language=en
rxgain=0.0
txgain=0.0

group=1
signalling=pri_net
context=incomming-PRI
channel => 73-95

These arethe errors I'm getting:
==================================
 [chan_zap.so] => (Zapata Telephony w/PRI)
  == Parsing '/etc/asterisk/zapata.conf': Found
    -- Registered channel 73, PRI Signalling signalling
    -- Registered channel 74, PRI Signalling signalling
    -- Registered channel 75, PRI Signalling signalling
    -- Registered channel 76, PRI Signalling signalling
    -- Registered channel 77, PRI Signalling signalling
Feb 22 14:46:01 ERROR[6519]: chan_zap.c:7017 mkintf: Channel 16 is reserved for D-channel.
Feb 22 14:46:01 ERROR[6519]: chan_zap.c:10311 setup_zap: Unable to register channel '73-95'
Feb 22 14:46:01 WARNING[6519]: loader.c:414 __load_resource: chan_zap.so: load_module failed, returning -1
    -- Unregistered channel 1
    -- Unregistered channel 2
    -- Unregistered channel 3
    -- Unregistered channel 4
    -- Unregistered channel 5
Feb 22 14:46:01 WARNING[6519]: loader.c:554 load_modules: Loading module chan_zap.so failed!