Hi, I'm having issues where people call one of my ISDN numbers, and sometime, when we answer, the call is dead. Its only sometimes happens, like one in 15 calls. I have analogue phones pluged into a mediatrix and a couple of pap's, and these connect to the asterisk server. Please could someone help me with this issue. ## extensions.conf [from-pstn] ; Incoming ISDN Calls exten => _X.,1,Answer() exten => _X.,n,NoOp("DNID = " ${DNID}) exten => _X.,n,NoOp("CALLERID = " ${CALLERID(all)}) exten => _X.,n,NoOp("EXTEN = " ${EXTEN}) exten => _X.,n,Dial(SIP/${EXTEN}) ## /etc/asterisk/misdn.conf echocancel=yes [TEports] ports=1,2,3,4 context=from-pstn ;msns=* msns=5718.....etc ## /etc/misdn-init.conf card=1,0x4 poll=128 dsp_poll=128 dsp_options=0 dtmfthreshold=100 debug=0 ## sip.conf [5713] type = friend username = 5713 secret = xxxxxxxx regexten = 5713 host = dynamic context = lofts qualify=yes nat=yes disallow=all allow=ulaw allow=g729 allow=alaw allow=g723.1 callerid=5713 Regards Zaine