User's Manual
Glossary of Terms 119
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.
SDN Service Dialling Number. This number enables you to access special
services provided by your network operator, such as customer support,
emergency services, etc.
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