Glossary
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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
L
LAN Local Area Network
LED Light Emitting Diode
N
NAT Network Address Translation. An Internet standard that enables a local-area network to use
one set of IP addresses for internal traffic and a second set of addresses for external traffic.
A NAT module makes all necessary address translations.
P
PIN Personal Identification Number. A code number used to provide access to a system that has
restricted access.
PoE Power over Ethernet
POST Power On Self Test. A test sequence that runs every time the system is powered up or reset.
PPPoE Point-to-Point Protocol over Ethernet. A network protocol for encapsulating Point-to-Point
Protocol (PPP) frames inside Ethernet frames. By using PPPoE, users can virtually "dial" from
one machine to another over an Ethernet network, establish a point to point connection
between them and then securely transport data packets over the connection.
PS Packet-Switched. Packet-switched networks move data in separate, small blocks (packets)
based on the destination address in each packet.
PUK PIN Unblocking Key. An eight-digit code used to unblock a SIM card after three incorrect PINs
have been entered. The PUK code is supplied with the SIM card.