The Sepura Systems FTS100 switch is used to switch TETRA
encoded voice packets.
The central controller of the switch is a server which manages
several key tasks of the TETRA infrastructure.
Call control (call setup / call termination)
Mobility management (distribution of the database which
determines which individuals and groups are available on which base
Distribution of status information to the individual nodes of
Interface to the gateway servers
Unlike other architectures, the central controller of the Sepura
Systems switch does not take on any of the tasks from the base
station. This means that tasks such as the control of the air
interface, arranging conversations within the cell, registration of
terminals and assigning radio channels are undertaken exclusively
within the base station. Because these tasks do not require
any resources from the central switch, the additional available
capability of a base station in fallback mode is guaranteed.