PortServer TS stops sending packets until restart

Hi there,

I have a PortServer TS 1 installed and these last days it stops sending serial data over ethernet until I restart it.

Model: PortServer TS 1 MEI
Firmware Version: Version 82000747_W 10/23/2013
CPU Utilization: 35%
Up Time: 11 minutes 50 seconds

How can I troubleshoot it?