Sorry in advance if this accidentally gets posted twice ;) Every few nights lately I seem to be getting 5-10 DS0's that just randomly go out of service on my chassis. The trap alerts come from different cards and seemingly from different DS0's. TRAP ds0sOutOfService Trap(ds0sOutOfService) nmcTrapSequenceNumber.0=38 nmcStatEventId.0=38 nmcGmtime.0=1046821588 uchasSlotIndex.1=15 uchasEntityIndex.1=1 uds1StatDs0SrvcChngLst.1=0 at 23:30:38 I did notice however that there is one card where the modem had 28 failures (or there about) and the DS0 was local out of service on it. I am not sure if the chassis is automagically taking it out of service because of the failures on this or what, but whenever it happens, it throws the whole hunt group into busy because it's not letting calls past that point. Any thoughts or ideas on this? HiperArc is running 5.3.3 HiperDSP is running 3.5.12 (ISDN Pri-ESF/B8ZS, 5ESS switch type) HiperNMC is running 8.6.3 Thanks! -Trevor GramTel U.S.A. [Infrastructure for e-business] 316 E. Monroe South Bend, IN USA 46601 P 574.472.4726 x 111 F 574.472.0904 www.gramtel.net