[channels]

context=incoming
switchtype=national
signalling=fxs_ks
echocancel=yes
echocancelwhenbridged=yes
relaxdtmf=yes
rxgain=1.5
txgain=1.5
immediate=no
busydetect=yes
callprogress=no
musiconhold=
usecallerid=no
group=2
;callerid=2564286000
channel => 1-4