Troubleshooting connection issues with Envisalink 4

[ubun2Junky]

I have an envisalink 4 connected in our summer home. As of recent we have started to get an "off-line" message on the app. We had a friend go over and take a look at the envisalink link device and they sent me a picture. Only the Oper and Keyb lights are on. Net, Online and Link are not. We tried the following.
- Plugged the ethernet to a new port on the switch, known to work. (made no difference)
- Powered the entire DSC alarm panel down. Disconnected battery and removed the transformer. Waiting about 5 mins before plugging everything back in. (made no difference)

Is there anything else we can try? Is the Envisalink 4 dead? The summer home is located in central america and we're in the US, so unfortunately troubleshooting remotely is difficult. Any suggestions would be appreciated. Thx.

https://pasteboard.co/5VNCJnSbpiEZ.jpg

[GrandWizard]

Hi, no LINK LED means no Ethernet connection. In all cases it means one of:

1) Bad Ethernet Cable (most common)
2) Blown port on router/switch (fairly common)
3) Blown port on the Envisalink (not common but we do see this with lightning strikes)