This document summarizes a large CCTV network with over 200,000 cameras across various locations. The network uses optical switches to connect 41,000 cameras over backbone networks A and B to a central management center. The central management center allows monitoring of video feeds and uses servers, storage, and a management system to record, stream, and control camera access. The CCTV network connects various locations like schools, disaster sites, forests, and more to provide security and emergency monitoring.