Try these steps from Synology’s knowledge base:
1. Test connectivity from a computer on the same network with:
ping your_camera's_IP_address
- If it times out, packets are lost, or the destination is unreachable, troubleshoot based on the error.
2. Restart the camera.
- In Surveillance Station: IP Camera > Edit > Optimization > Advanced > Force Restart
- Or use the camera’s web interface to set a regular restart schedule.
3. Check firmware updates.
- Some updates can affect connectivity or cause regressions.
4. If the camera still stays disconnected after passing the connection test:
- Make sure the Synology server can access the camera’s RTSP port if they are not on the same local network.
- If port forwarding is used, the same port must be used for both public and private RTSP services.
- Prefer wired connections over wireless.
- If the camera is wireless only, make sure the Wi‑Fi signal is strong enough.
If it still doesn’t come back online after that, contact Synology Technical Support and provide the symptoms plus your troubleshooting results.
Sources used: [1], [2]