Wiring: Properly routing and concealing Cat6/Coaxial cables.
Networking: Configuring IP cameras and connecting them to the router/switch.
Remote Access: Setting up live view on mobile and PC.
Maintenance: Repairing or replacing faulty cameras, power supplies, and hard disks.
Testing: Performing daily system checks and verifying backup recordings. []1, 2, 3, 4, 5]