[channels] ; musichold=default context=incoming switchtype=dms100 signalling=pri_cpe group=1 channel => 1-22 hidecallerid=no callwaiting=yes usecallingpres=yes callwaitingcallerid=yes transfer=yes cancallforward=yes callreturn=yes ; ; Echo Cleaning Attempts ; ; rxgain=-5.5 txgain=5.5 echocancel=yes echocancelwhenbridged=yes echotraining=yes