[channels]

switchtype=national
signalling=pri_cpe

pridialplan=unknown
prilocaldialplan=unknown
usecallerid=yes
callerid=asreceived

echocancel=yes
echocancelwhenbridged=yes
echotraining=yes
rxgain=0.0
txgain=0.0

musiconhold=default
language=en
context=incomingfrompri
group = 1

channel => 1-23