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Glossary
Glossary
A
APN Access Point Name. The Access Point Name is used by the terminal operator to establish
the connection to the required destination network.
B
BGAN Broadband Global Area Network. A satellite network based on geostationary satellites,
delivering broadband data to virtually any part of the earth, with full UMTS (3G)
compatibility.
C
CM Continuous Monitoring
CS Circuit-Switched. Circuit-switched networks require dedicated point-to-point
connections during calls.
D
DHCP Dynamic Host Configuration Protocol. A protocol for assigning dynamic IP addresses to
devices on a network. With dynamic addressing, a device can have a different IP address
every time it connects to the network.
DNS Domain Name System. A system translating server names (URLs) to server addresses.
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.
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