Magellan GLOBAL SATELLITE TELEPHONE User Manual page 152

Appendix G – List of terms cont'd
LES Land Earth Station, a station that interconnects fixed telecommunica-
tions networks with the Inmarsat system; may also be called a CES (Coast
Earth Station) or a GES (Ground Earth Station).
MES Mobile Earth Station, a user terminal for an Inmarsat system; the
WorldPhone terminal is an MES for the Inmarsat Mini-M system; MES may
also be called SES (Ship Earth Station) or, if on aircraft, AES (Aeronautical
Earth Station).
NCS Network Coordination Station, station that supervises all messages and
signals sent in the Inmarsat system; one in each Ocean Region.
NIMS Nera Internet Messages Service, allows a message of maximum 1024
characters to be sent to the WorldPhone from a website, or to an e-mail
address from the WorldPhone.
Non-ARQ non-automatic repeat request, see ARQ
Ocean Region the coverage area of an Inmarsat satellite within which the
WorldPhone may communicate, see map in appendix H.
PABX private automatic branch exchange
PCCA Portable Computer & Communications Association Modem Stand-
ards Committee.
PIN Personal Identification Number
POR Pacific Ocean Region, see map in appendix H.
PUK Personal Unblocking Key, code that allows unblocking a SIM card.
RF Radio Frequency
RNR Receiver Not Ready data signal
RR Receiver Ready data signal
S/A operator StandAlone operator who maintains connectivity in the event
of Network Coordinating Station failure.
SIM Subscriber Identity Module
SMS Short Message System
Spot Beam an Ocean Region is divided into sub-regions, each "spotlighted"
by a beam from the region satellite.
Terrestrial Network a fixed telecommunications network, such as a tele-
phone network or a data network, which connects to the Inmarsat system at
an LES/NCS.
TNID Terrestrial Network Identification Digits
UTC Coordinated Universal Time, referenced to Greenwich Mean Time
(GMT)
G-2 WorldPhone – Chapter 5. Appendices