'Planning, Building and Upgrading Trunked Radio Networks and Systems'

摘要

1. Trunked radio technology is essential 1.1 Frequencies 1.2 Features and Benefits 1.3 Costs 2. Further improvements with a move to digital 2.1 Better product range 2.2 Encryption 3. Separate data network desirable 3.1 supports move to TCP/IP 3.2 Voice over IP