COBHAM Sailor 250 FleetBroadband, Training Manual, Page: 240 / 270

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Chapter 9
Abbreviation
9
ITU International Telecommunications Union
Kbps Kilobits per second.
LAN Local Area Network.
LaunchPad Inmarsat BGAN PC software.
LED Light Emitting Diode
MES Mobile Earth Station, a user terminal for an Inmarsat system;
the Nera WorldPro terminal is an MES for the Inmarsat BGAN
system.
Modem Device/driver for conveying digital data.
MSN Multiple Subscriber Number, the extension number that
connected equipment responds to.
OSI: Open Systems Interconnection (OSI) standard
Ocean Region the coverage area of an Inmarsat satellite.
PABX Private Automatic Branch Exchange.
PDU: Protocol Data Units
PIN Personal Identifi cation Number.
PoE: Power over Ethernet
PPP Point-to-Point Protocol used for serial data communication.
PPPoE: Point-to-Point Protocol over Ethernet. PPP over
Ethernet.
PS Packet Switched data service.
PSTN Public Switched Telephone Network
PUK Personal Unblocking Key, code that allows unblocking
a SIM card.
QoS Quality of Service
RF Radio Frequency.
SAS Satellite Access Station, a station that interconnects fixed
telecommunications networks with the Inmarsat system.
SIM Subscriber Identity Module
SMS Short Message System.
DP: Distribution partner = Service Provider
Spot Beam an Ocean Region is divided into subregions,
each “spotlighted” by a beam from the region satellite.
Terrestrial Network a fi xed telecommunications network,
such as a telephone network or a data network,
which connects to the Inmarsat system at an SAS.
UDI Unrestricted Digital Information.
UMTS Universal Mobile Telecommunications System.
USB Universal Serial Bus.
USIM SIM card designed for 3G mobile telephony.