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100 Appendix D: Glossary
APPENDIX D: GLOSSARY
DTMF Tones Dual Tone Multi-Frequency tones (touch tones) allow you to communicate with
computerized phone systems, voice mailboxes etc.
GPRS General Packet Radio Service. A GSM data 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 the volume of data sent and received.
GSM Global System for Mobile Communications. A digital cellular or PCS network
used throughout the world.
MMS Multimedia Messaging Service. Attach images and music to text messages.
PIN code Personal Identification Number used for SIM security. Supplied by your wireless
service provider. If the PIN is entered incorrectly 3 times, the PIN will be blocked.
PIN2 code Personal Identification Number used for the control of Fixed Dial Store and Call
Charge metering. Supplied by your wireless service provider. If the PIN2 is
entered incorrectly 3 times, the PIN2 will be blocked.
PUK/PUK2 code PIN/PIN2 Unblocking Key. Used to unblock the PIN/PIN2. Supplied by your
wireless service provider. If the PUK/PUK2 is entered incorrectly 10 times, the
PUK/PUK2 will be blocked.
Registration Act of locking on to a GSM network, usually done automatically by your phone.
Roaming Ability to use your phone on networks other than your home network.
SIM card Subscriber Identity Module card. A small smart-card which stores unique
subscriber and user-entered information such as Phonebook and Short
Messages. Supplied by your wireless service provider.
SMS Short Message Service. Transmission of short text messages to and from mobile
phones via the network operator’s message center.
T9
®
text entry Predictive text entry software that allows text entry with one key press per letter
instead of pressing one key multiple times until the desired letter appears. T9
translates key press sequences into words using a highly compressed database.
WAP Wireless Application Protocol. A communication standard which enables you to
download resources from the Internet to your phone. WAP sites consist of text,
hyperlinks and some pages contain low-resolution graphics.
Bookmark: A saved link to a web page.
Browser: An application program that provides a way to look at and interact with
the Internet.
URL: Uniform Resource Locator. An address of a file (resource) accessible on
the Internet.
Wireless Service
Provider
A company that provides services and subscriptions to mobile phone users.