This is my zapata.conf[channels]context=defaultswitchtype=national;signalling=fxo_lssignalling=fxs_ksrxwink=300 ; Atlas seems to use long (250ms) winksusecallerid=nohidecallerid=nocallwaiting=yesusecallingpres=yescallwaitingcallerid=yesthreewaycalling=yestransfer=yescanpark=yescancallforward=yescallreturn=yesechocancel=yesechocancelwhenbridged=yes;echotraining=yes;echotraining=800echotraining=400relaxdtmf=yesrxgain=-1.-1txgain=-1.-1group=1callgroup=1pickupgroup=1-4immediate=nobusydetect=yescontext=defaultchannel => 1-4