Sailor 250 FleetBroadband, User Manual, Page: 276 / 288

Glossary
260
E
ECEF The Earth-Centred Earth-Fixed or conventional terrestrial
coordinate system rotates with the Earth and has its origin at the
centre of the Earth. The X axis passes through the equator at the
prime meridian. The Z axis passes through the north pole but it
does not exactly coincide with the instantaneous Earth rotational
axis. The Y axis can be determined by the right-hand rule to be
passing through the equator at 90 degrees longitude.
G
Geostationary Placed in a fixed position relative to a point on the surface of the
earth.
GPS Global Positioning System
I
I/O Input/Output
IAI-2 Inmarsat Air Interface-2. The air interface used for BGAN. IAI-2 is
an evolution of MPDS with new bearer types, which give a wide
range of data rates from 16 kbps up to 492 kbps. By utilizing
different modulation schemes, variable coding rate and power
adjustment, it is possible to change the bearer type to give
optimum throughput with efficient use of the satellite resources.
IMEI International Mobile Equipment Identity. A unique number
identifying your terminal
IMSO International Maritime Satellite Organisation. An
intergovernmental body established to ensure that Inmarsat
continues to meet its public service obligations, including
obligations relating to the GMDSS.
IP Internet Protocol