[trunkgroups]

trunkgroup=>1,24
trunkgroup=>2,72

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

[channels]

switchtype=national
signalling=pri_cpe
usecallerid=yes
callerid=asreceived
echocancel=yes
echocancelwhenbridged=yes
echotraining=yes
rxgain=0.0
txgain=0.0
relaxdtmf=yes
musiconhold=native
language=en
context=GBX-Inbound


group = 1
channel => 1-23
channel => 25-71
channel => 73-96