Hi, This is my 2nd HiperARC card in the past few months coming up "bad" - running 5.3.3 on several ARCs no problem for long periods of time. Problem #1: - reboots every 1-7 days (at worst possible time usually of course) - upon reboot that first time, takes no calls, although as best I can see no reason it wouldn't (probably ignorance on my part) - reboot again, all is well until next time I seem to recall something about chassis awareness an issue? I'm thinking I need to get another ARC (and I'm sure someone here will help with that) Now I'm also seeing, and thinking it's related, DS0's randomly go "local out of service". Very weirdly then callers get "call cannot be completed as dialed" Set that channel back in service, all is back to normal. I would not have guessed in a million years that a local out of service channel on my end could end up with a "call cannot be completed as dialed". Anyone seen the behavior, and can anyone 'splain to me why the "call...." message? I would have thought busy or dead air. For once the telco was right and it wasn't their problem. Mark that one down. Thanks mucho for any wisdom! SMT Scott Trautman Global Dialog Internet www.gdinet.com 608-240-4638,7fax Internet Service for Southern Wisconsin scott@gdinet.com