Hi list, I'm trying to connect a cisco 2620 to my asterisk box using ISDN PRI. But I got some problems. zttool shows "no alarms" and "Internally clocked". Asterisk starts fine, but doesn't bring up d-channel. And when I try to make a call, asterisk shows: NOTICE[16401]: File app_dial.c, Line 516 (dial_exec): Unable to create channel of type 'Zap' At the first time I configured, it worked, but after the second test call, this problems occurs. thanks Eduardo zaptel.conf: ========span=1,1,0,ccs,hdb3 bchan=1-15 dchan=16 bchan=17-31 loadzone = us defaultzone=us zapata.conf ========[channels] context=pd switchtype=national signalling=pri_net usecallerid=yes hidecallerid=no callwaiting=yes usecallingpres=yes callwaitingcallerid=yes threewaycalling=yes transfer=yes cancallforward=yes callreturn=yes echocancel=yes echocancelwhenbridged=yes rxgain=0.0 txgain=0.0 group=1 callgroup=1 pickupgroup=1 immediate=no channel=>1-15,17-31