Someone

[channels]
language=fr
context=default
signalling=fxs_ks
usecallerid=yes
hidecallerid=no
callwaiting=yes
callwaitingcallerid=yes
threewaycalling=yes
transfer=yes
cancallforward=yes
callreturn=yes
echocancel=yes
echocancelwhenbridged=yes
rxgain=5.0
txgain=5.0
group=1
pickupgroup=1
immediate=yes
musiconhold=default
channel => 1