Glossary of Terms
CSD
Circuit Switched Data – allows dial-up data
communications.
GPRS
General Packet Radio Service – packet switched
(always on) data communication protocol.
GSM
originally stood for Groupe Speciale Mobile, but
now it is known as Global System for Mobile
communications
LCD
Liquid Crystal Display
LED
Light Emitting Diode
SIM
Subscriber Identity Module
PIN
Personal Identification Number
PUK
PIN Unblocking Key
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Glossary of Terms