8
58
CUG Closed User Group
GSM Global System of Mobile Communication
GPRS General Packet Radio Service
SMS
Short Message Service
SMS-CB
Short Message Service-Cell Broadcast
WAP Wireless Application Protocol
FDN Fixed Dialed Numbers
SIM
Subscriber Identity Module
PIN
Personal Identity Number. Usually refers to PIN1. Supplied with
SIM card. To unlock the SIM card.
PIN2 Personal Identity Number 2. Supplied by the network operator. It
is used when specific functions are to be performed, such as
protected FDN function supported by SIM card.
PUK Personal Unlock Code, supplied with SIM card. It is used to
unlock the SIM card if you entered wrong PIN code for three
consecutive times and the SIM card is locked. You can also use it
to modify PIN code.
PUK2 Personal Unlock Code 2, supplied with a specific SIM card, and
APPENDIX II ABBREVIATIONS AND EXPLANATIONS