Hi, I have 3CX v8 running all day and most of the time everything works fine but.....sometimes I am unreachable on all my VOIP lines and see the following error in the log file: Registration failed for [PORT/TRUNK/VOIPPROVIDER ], Cause: 408 Request Timeout; internal When this happens in the mgmt console under PORTS/TRUNKS STATUS only red icons are visible instead of green. After some time the icons turn green again....my internet connection has not been down during this time. Also the different VOIP providers that I use which are configured in the PORTS/TRUNKS status are reachable when I use a softphone for the moment that the error message 408 appears. What could cause this problem, or where could I start to troubleshoot this. In v7 I did not have this kind of problem.