84 Glossary of Terms
Glossary of Terms
DTMF Dual Tone Multi-Frequency tones allow 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.
GSM Global System for Mobile communications. The name given to the
advanced digital technology that your phone uses.
Network
Operator
The organisation responsible for operating a GSM network.
Password Used for the control of Call Bar.
PIN Personal Identification Number used for SIM 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. Supplied by your service provider. If the
PIN2 is entered incorrectly 3 times, the PIN2 will be blocked.
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.
Service
Provider
The organisation responsible for providing access to the GSM/GPRS
network.
SIM Subscriber Identity Module. A small smart-card which stores unique
subscriber and user-entered information such as Contacts entries and
short messages. Supplied by your service provider.
SMS Short Message Service. A basic mail system used for cellular phones.
This service allows sending/receiving of short text messages.