We have a EuroISDN30, linked directly to * via a TE405P card, on span 3. (span 1 is linked to another EuroISDN, and span 2 to a pbx, which we are decommissioning). After a couple of days, I notice that incoming calls are getting more and more "busy" tones. These calls are not being handled by * at all - there is no messages on the console (verbose 10). After a while, it is maybe 1 in 7 calls that make it through to *. Outgoing calls are still made fine - there are no problems there. If I stop * and restart, then there are no problems with incoming calls for another few days. I am currently on CVS head (yesterday am) - however this has been going on for a few weeks now . Does anyone have any clues before I really start digging ? TIA Julian.