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Glosario de abreviaturas (orden alfabético) - 3/8

DHSD Duples High Speed Data
DMG Distress Message Generator

DNIC Data Network Identification Code

DNID Data reporting Network Identification Code

DSC Digital Selective Call
DTE Data Terminal Equipment

EGC Enhanced Group Call (Inmarsat-C)

EGC FleetNet FleetNet service to distribute commercial information to SES's
belonging to a group, identified by a unique ENID code.

EGC SafetyNet Service using Inmarsat C to distribute MSI to SES's.

ENID EGC network identification code
EPIRB Emergency Position Indicating Radio Beacon

Facsimile see fax.

Fax Abbreviation for “Facsimile”. A device used to transmit a copy
of an original document. The Inmarsat B and F77 (Fleet 77)
systems support two-way fax transmissions. The Inmarsat C
system, is limited in the ship to shore directionto allowing an
SES to send text messages only (no graphics) to a fax
terminal using a third-party fax bureau service to send text
messages only (no graphics) to an Inmarsat C SES.

FEC Forward Error Correction (Radiotelex)
FM Frequency modulation

Footprint (of a satellite) The surface area (sea or land) within which an
antenna can obtain line-of-sight communications with a
satellite. In the Inmarsat systems this area correspond to an
Ocean Region. Footprint is also known as coverage area.

Gateway An interface between communication system. For exemple,
between Inmarsat-C and the national/international
telecommunications network.

GLONASS Global Navigation Satellite System (using satellites of the
Russian Federation) that provides three dimensional
positioning, velocity and time. Available for civilian use and
recognized by IMO.
GMDSS Global Maritime Distress Safety System

GOC General Operator's Certificate