[channels] usecallerid=yes cidsignalling=bell cidstart=ring usecallingpres=no echocancel=yes echocanclewhenbridged=yes echotraining=yes rxgain=8.2 txgain=1.0 group=1 callgroup=1 pickupgroup=1 hanguponpolarityswitch=yes answeronpolarityswitch=no ringtimeout=8000 musiconhold=default busydetect=yes busycount=6 usecallerid=yes hidcallerid=no callwaiting=no threewaycalling=no transfer=no echocancel=yes echotraining=yes echocanelwhenbriged=yes context=incoming callprogress=no signalling=fxs_ks channel=> 3 busydetect=yes busycount=6 usecallerid=yes hidcallerid=no callwaiting=no threewaycalling=no transfer=no echocancel=yes echotraining=yes echocanelwhenbriged=yes context=incoming callprogress=no signalling=fxs_ks channel=> 4