We have a number of MultiPlus ii GX units installed and we remotely monitor these units on a closed network. We see events where the Ethernet connections are lost for around 20 minutes for 2 minute intervals and then returns without issue. We know this because our switches record port down and up. We have 4 units all at different locations all doing similar. The Ethernet to the locations is not impacted as there is more IP connected equipment on site that has no interruptions. Appreciate any help that can be provided. They are all running latest release firmware. They have only been in for 1 month.