Philips az@lis 238 - Manual (Page 45)

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Glossary
L NOTE:
* Provided by your service operator.
** Subscription dependent.
GSM Network Global System for Mobile communications. The type of
network used by your phone.
DTMF Dual Tone Multi Frequency. Also known as "touchtone". The
tones are transmitted by the phone to the network and are
used to interrogate answering machines, transmit code...
Home network The network to which you subscribe to.
Home zone** A particular area of your home network.
Idle screen This is the screen which is displayed after registering to your
network (see page 10).
PIN code* Personal Identification Number. The secret code of the SIM
card
PIN2 code* Secret code that allows you to access certain SIM card
dependent features.
PUK/PUK2 code* Secret code used to unblock your SIM card if you, or
someone else, enters the wrong PIN/PIN2 code three times.
Roaming Using your phone in a network other than your home
network.
SIM card* Subscriber Identification Module. The card which allows you
to access the services of your network operator.
SMS** Short Message Service. This allows you to send and receive
short written messages.
T9™ Text Input Efficient method of text input that requires just one key press
per letter.
WAP** Wireless Application Protocol. Global standard that allows
you to access internet services.