Types Of Mes - Furuno FELCOM 12 Operator's Manual

10
MES interface
Terrestrial network
interface

Types of MES

There are three types of MES: class 1, class 2 and class 3. The
FELCOM 12 is a class 2 MES.
Class 1
Class 2
Class 3
The MES consists of the Data Circuit
Terminating Equipment (DCE) and the
Data Terminal Equipment (DTE). The
DCE consists of the antenna unit and
the communication unit. And the DTE
consists of the terminal unit (or a PC),
keyboard and printer.
The major functions of the LESs are:
1) Telex store-and-forward conversion
2) Handling EGC messages
3) Handling distress alerts
4) Data Reporting and Polling
1) Transmits messages to LES
2) Receives messages from LES
1) The functions of class 1 plus opera-
tion as an EGC receiver when not
transmitting or receiving.
2) EGC-only receiver
The function of class 1 plus simulta-
neous operation as a EGC-only receiver.