I would like you to check the following. When the device disconnects from the server, login to the router's WebUI, navigate to System -> CLI or via SSH and execute the following command:
- /etc/init.d/rs_ntrip restart
If that helps, periodic service restart can be configured.
Also, could you provide more details about disconnection from the server? Is it a loss of a single connection between NTRIP client and server, is it related to a general data connection loss on the TRB side, or is it the server that occasionally goes offline?