iii

CONTENTS

MENU TREE .....................................................................................vii

OPERATIONAL OVERVIEW...........................................................viii

PROGRAM NUMBER ........................................................................ix

FOREWORD .......................................................................................1

Introduction ..............................................................................................................................1
Features..................................................................................................................................... 2
About This Manual ...................................................................................................................3
FELCOM 12 System Configuration......................................................................................... 4

INMARSAT-C SYSTEM ......................................................................5

Introduction ..............................................................................................................................5
Inmarsat System Configuration ................................................................................................6
Communications Network........................................................................................................ 9
Types of MES...................................................................................................................... 10
Peripheral Equipment .............................................................................................................11
Distress/Urgent Receiving Call Unit (IC-303) ....................................................................11
Distress Alert Unit (IC-302)................................................................................................ 11
Distress Message Controller (DMC-5: Option)................................................................... 11

OPERATIONAL OVERVIEW...........................................................1-1

The Communication Unit ......................................................................................................1-1
Self test...................................................................................................................... .........1-1
When the audible alarm sounds.......................................................................................... 1-1
The Terminal Unit..................................................................................................................1-2
Floppy disk drive................................................................................................................ 1-2
Floppy disk......................................................................................................................... 1-2
Printer PP-510 (optional supply) ...........................................................................................1-3
Keyboard ...............................................................................................................................1-4
Key description...................................................................................................................1-4
Shortcut key operation........................................................................................................1-6
Function Menus .....................................................................................................................1-6
Selecting menu, menu options............................................................................................1-7
Function menu description .................................................................................................1-7
Sample menu operation ......................................................................................................1-8
Display Indications ................................................................................................................1-9
Error Messages and Alerts................................................................................................... 1-11
Silencing the Audible Alarm................................................................................................1-12
Silencing the alarm by the Setup menu ............................................................................1-12
Using a Personal Computer as a Terminal Unit...................................................................1-13
PC requirements ...............................................................................................................1-13
Installing the program.......................................................................................................1-13
Contents of program disk .................................................................................................1-14