1 Introduction
2 Electronic
messaging
2.1 Operational
characteristics
2.2 General
description
3 Interactive
Internet and Intranet applications
3.1 Operational
characteristics
3.2 General
description
4 File
transfer
4.1 Operational
characteristics
4.2 General
description
5
Digital voice
5.1 Operational
characteristics
5.2 General
description
6 Software
defined radio
6.1 Operational
characteristics
6.2 General
description