I have 4 T1s in one trunk group and with 

;zapata.conf
[trunkgroups]

trunkgroup=>1,24
spanmap => 1,1,1
spanmap => 2,1,2
spanmap => 3,1,3
spanmap => 4,1,4

[channels]

language=en
context=test
group=1
signalling=pri_cpe
switchtype=national
callerid=asreceived under
rxwink=300
usecallerid=yes
hidecallerid=no
callwaiting=yes
usecallingpres=yes
callwaitingcallerid=yes
threewaycalling=yes
transfer=yes
cancallforward=yes
callreturn=yes
echocancel=yes
echocancelwhenbridged=yes
echotraining=400
rxgain=0.0
txgain=0.0
callgroup=1
pickupgroup=1
immediate=no
channel => 1-23,25-48,49-72,73-96

;zaptel.conf
  GNU nano 1.2.4                                    File: /etc/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=1-23,25-48,49-73,74-96
dchan=24
loadzone = us
defaultzone = us


output
*CLI> Aug 12 15:25:02 WARNING[4782]: chan_zap.c:8287 pri_dchannel: Restart requested on odd/unavailable channel number 0/1 on span 1
Aug 12 15:25:02 WARNING[4782]: chan_zap.c:8287 pri_dchannel: Restart requested on odd/unavailable channel number 0/2 on span 1
Aug 12 15:25:02 WARNING[4782]: chan_zap.c:8287 pri_dchannel: Restart requested on odd/unavailable channel number 0/3 on span 1
Aug 12 15:25:02 WARNING[4782]: chan_zap.c:8287 pri_dchannel: Restart requested on odd/unavailable channel number 0/4 on span 1
Aug 12 15:25:02 WARNING[4782]: chan_zap.c:8287 pri_dchannel: Restart requested on odd/unavailable channel number 0/5 on span 1
Aug 12 15:25:02 WARNING[4782]: chan_zap.c:8287 pri_dchannel: Restart requested on odd/unavailable channel number 0/6 on span 1
Aug 12 15:25:02 WARNING[4782]: chan_zap.c:8287 pri_dchannel: Restart requested on odd/unavailable channel number 0/7 on span 1
Aug 12 15:25:02 WARNING[4782]: chan_zap.c:8287 pri_dchannel: Restart requested on odd/unavailable channel number 0/8 on span 1
Aug 12 15:25:02 WARNING[4782]: chan_zap.c:8287 pri_dchannel: Restart requested on odd/unavailable channel number 0/9 on span 1
Aug 12 15:25:02 WARNING[4782]: chan_zap.c:8287 pri_dchannel: Restart requested on odd/unavailable channel number 0/10 on span 1
Aug 12 15:25:02 WARNING[4782]: chan_zap.c:8287 pri_dchannel: Restart requested on odd/unavailable channel number 0/11 on span 1
Aug 12 15:25:02 WARNING[4782]: chan_zap.c:8287 pri_dchannel: Restart requested on odd/unavailable channel number 0/12 on span 1
Aug 12 15:25:02 WARNING[4782]: chan_zap.c:8287 pri_dchannel: Restart requested on odd/unavailable channel number 0/13 on span 1
Aug 12 15:25:02 WARNING[4782]: chan_zap.c:8287 pri_dchannel: Restart requested on odd/unavailable channel number 0/14 on span 1
Aug 12 15:25:02 WARNING[4782]: chan_zap.c:8287 pri_dchannel: Restart requested on odd/unavailable channel number 0/15 on span 1
Aug 12 15:25:02 WARNING[4782]: chan_zap.c:8287 pri_dchannel: Restart requested on odd/unavailable channel number 0/16 on span 1
Aug 12 15:25:02 WARNING[4782]: chan_zap.c:8287 pri_dchannel: Restart requested on odd/unavailable channel number 0/17 on span 1
Aug 12 15:25:02 WARNING[4782]: chan_zap.c:8287 pri_dchannel: Restart requested on odd/unavailable channel number 0/18 on span 1
Aug 12 15:25:02 WARNING[4782]: chan_zap.c:8287 pri_dchannel: Restart requested on odd/unavailable channel number 0/19 on span 1
Aug 12 15:25:02 WARNING[4782]: chan_zap.c:8287 pri_dchannel: Restart requested on odd/unavailable channel number 0/20 on span 1
Aug 12 15:25:02 WARNING[4782]: chan_zap.c:8287 pri_dchannel: Restart requested on odd/unavailable channel number 0/21 on span 1
Aug 12 15:25:02 WARNING[4782]: chan_zap.c:8287 pri_dchannel: Restart requested on odd/unavailable channel number 0/22 on span 1
Aug 12 15:25:02 WARNING[4782]: chan_zap.c:8287 pri_dchannel: Restart requested on odd/unavailable channel number 0/23 on span 1
Aug 12 15:25:02 WARNING[4782]: chan_zap.c:8287 pri_dchannel: Restart requested on odd/unavailable channel number 1/24 on span 1
Aug 12 15:25:09 WARNING[4782]: chan_zap.c:8386 pri_dchannel: Ring requested on unconfigured channel 0/1 span 1