I don’t have an answer for you, but a couple of things come to mind:
- There’s a Wishlist topic that seems to be related to what you’re asking: Loss of Communication/Network Connection Notification & Log. If you haven’t already, you can visit that one, hit the Vote button above the initial post, and add your ideas/use cases in the comments. Forum Maven @carverofchoice wrote in that topic about a work-around he’s using.
- Community member @K6CCC has written about using internal and external services to monitor the health of his network, so tagging him might bring some other ideas to this topic.
As @dave27 said, if what you really want to know about is if/when the camera stops recording to microSD, then I’m not sure of a way to monitor that process, but I’m interested in learning what develops out of this topic.