What you'll notice
One or more IP cameras never appear in the channel list, or appear and vanish.
Why it happens
IP address conflicts or wrong subnets, camera passwords out of sync with the NVR, incompatible protocols between mixed brands, or a bad patch lead.
How we fix it
We put cameras and NVR on a clean, documented addressing plan, align credentials, use ONVIF correctly for mixed-brand systems, and prove each channel stable — not just momentarily visible.
Still not working?
If the checks above haven't restored your nvr (network video recorder), this usually needs a technician. Our NVR Repairs service covers exactly this fault.