TT-3000E mini-C GMDSS User Manual - Polaris-as.dk

TT-3000E mini-C GMDSS User Manual
• Additional services provided (such as
forwarding messages as SMS).
• Special requirements for how destination
addresses are written.
Also most LESs offer a large number of configuration
options where the MES owner can request and adjust
special features: Adding header and footer lines, setting
message size limits, enable automatic forwarding, etc.
Therefore it is recommendable to seek specific information
from the desired LES.
3.2.2 BROADCASTS
Broadcast data is supported through a mechanism called
EGCs. They are used for different types of services but the
FleetNET EGC (Enhanced Group Call) service is the most
interesting one for commercial purposes.
FleetNET is typically used in situations where a sender has
a need for frequent transmissions to a fleet of ships. There
are also LESs that provide various newsletter services sent
via FleetNET. The mobiles receiving the FleetNET EGC
messages are identified by an ENID.
Please contact your preferred LES operator for enquiries of
availability and pricing of these services.
Refer to [2] for information on viewing the ENIDs in the
transceiver.
EGCs are also used for distributing maritime safety
information; this will be covered in section 3.3.
3.2.3 POSITION REPORTING
While messages could in principle be used for frequent
position tracking, there exists a more convenient protocol
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