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Glossary of Terms
DTMF
Dual Tone Multiple Frequency tones. The numeric keys 0 to 9, and
* and # will generate different DTMF tones when pressed during
conversation. These are used to access voice mail, paging and
computerised home banking.
GSM
Global System for Mobile communications. The name given to the
advanced digital technology that your telephone uses.
Home country
The country where your home network operates.
Home network The GSM network on which your subscription details are held.
Lock code
Used for security of your telephone. Factory set to 0000.
Message Centre Where messages are sent before they are forwarded onto their
destination. The Message Centre number may be programmed
into your SIM or supplied by your Service Provider.
Network
operator
The organisation responsible for operating a GSM network. Each
country will have a different network operator.
Password
Used for the control of the call bar. Supplied by your Service
Provider.
PIN
Personal Identification Number used for SIM security. Supplied by
your Service Provider.
PIN2
Personal Identification Number used for the control of Fixed Dial
Store and call charge metering. Supplied by your Service Provider.
PUK/ PUK2
PIN/PIN2 Unblocking Key. Used to unblock the PIN/PIN2. Supplied
by your Service Provider.
Registration
The act of locking on to a GSM network. This is usually performed
automatically by your telephone.
Roaming
The ability to use your telephone on networks other than your
Home network.
Service Provider The organisation responsible for providing access to the GSM
network.
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