The EST3 network supports up to 64 panels with a capacity of 2,500 addressable points per panel and a total network length exceeding 90 km (Page 1, 2) [1].
It utilizes a multi-priority peer-to-peer token ring protocol that ensures alarm response times under three seconds regardless of the number of nodes (Page 2) [1].
This architecture is highly survivable; a single wiring fault is isolated to allow uninterrupted communication, and a panel CPU failure does not disable protection because each panel stores its own database and can distribute alarm information internally (Page 2) [1].
