Layer 1 / As-builtAs-built and network diagram
A BICSI 005/007-conformant as-built with the full network diagram. Every camera, cable, port, and switch is labeled, and the drawing matches the field. When you add, move, or troubleshoot a device two years from now, the documentation still tells the truth.
Layer 2 / Evidence integrityEvidence integrity
Retention and chain-of-custody configured so footage survives an FRE 901 challenge. Access is logged, timestamps are defensible, and the record shows who touched what and when. The clip holds up when it has to.
Layer 3 / Security baselineSecurity baseline
VLAN segmentation, a firmware inventory, and the hardening record, documented. The camera network stops being the easy way in, and you hold written proof of how it was locked down.