Hello , iam having 6 asterik cards on three different servers I am using asterisk 1.2.14 with zaptel 1.2.12 on fedora core 5 (2.6.17.1). now every 3 days i need to rmmod/modprobe wctdm driver to detect the call. callers wont get the IVR prompt. after rmmod and modprobe the wctdm ..it works fine. earlier i wanted to restart every day...so i removed the CLI detection on British telecom line.now its happening evry 3 days..i have used this part in additon to normal config. but it gave that error..everyday..(asterisk didnt detect the incming call) then i remove this part...now that happeing evry 3 days..(ima connected to British telecom PSTN). i have enabled loadzone=uk.. usecallerid=yes cidsignalling=v23 cidstart=polarity =========================== this is my zaptel config.. (NO CLI detection enabled) signalling=fxs_ks busydetect=yes busycount=8 threewaycalling=yes group=1 context=sip echocancel=yes channel=> 1-8 echocancelwhenbridged=yes echotraining=20 echotraining=yes dtmfmode=rfc2833 rxgain=4.0 txgain=4.0 My fxo cards are connected to British telecom . can it be a problem with BT singnaling..?? because asterisk verisn 1.07 worked without any erros.. or can it be a problem with the card ? many thanks, Tharanga