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Glossary of Terms
Glossary of Terms
ADN
Abbreviated Dialling Number. Used for frequently called numbers.
APN
Access Point Name. Directs the user to the gateway or the required
service.
CSD
Circuit Switched Data. A communication method used to transmit
data over telephone connections.
DTMF
Dual Tone Multi-Frequency allows you to communicate with
computerised phone systems, voice mailboxes, etc.
FDN
Fixed Dial Number. Used to restrict outgoing calls to a certain set of
numbers.
GPRS
General Packet Radio Service. A GSM transmission technique that
transmits and receives data in packets rather than setting up a
continuous channel. It makes very efficient use of available radio
spectrum and users pay only for volume of data sent and received.
GSM
Global System for Mobile communications. The name given to the
advanced digital technology that your phone uses.
MMS
Multimedia Message Service. This service allows sending/receiving
messages consisting of text, sounds, images, and video clips.
Network
Operator
The organisation responsible for operating a GSM network.
Password
Used for the control of Call bar. Supplied by your service provider.
PIN
Personal Identification Number used for SIM card security.
Supplied by your service provider. If the PIN is entered incorrectly
3 times, the PIN will be blocked.
PIN2
Personal Identification Number used for the control of Fixed Dial
Store and Call Charge metering. If the PIN2 is entered incorrectly
3 times, the PIN2 will be blocked. The PIN2 is supplied by your
service provider.
PLMN
Public Land Mobile Network. A network that provides land mobile
telecommunications services.
PUK/PUK2
PIN/PIN2 Unblocking Key. Used to unblock the PIN/PIN2 code.
Supplied by your service provider. If the PUK/PUK2 is entered
incorrectly 10 times, the PUK/PUK2 will be blocked.
Registration
The act of logging on to a GSM/GPRS network. This is usually
performed automatically by your phone.
Roaming
The ability to use your phone on networks other than your home
network.