group = 1
signalling = pri_cpe
switchtype = national
context=mainmenu
channel => 1-23

group = 2
signalling=fxs_ks
busydetect=no
echotraining=yes
echocancel=yes
echocancelwhenbridged=yes
rxgain=15
channel => 25-29

group = 3
context = internal
echotraining=off
echocancel=yes
echocancelwhenbridged=yes
immediate = no
signalling=fxo_ks
rxgain=8
channel => 33-36