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Appendix II Abbreviations and explanations
CDMA
Code Division Multiple Access
SMS
Short Message Service
ESN
Electronic Serial Number
UIM
User Identity Module
PIN
Personal Identity Number. Usually refers to PIN1.
Supplied together with UIM card. Used to unlock
the UIM card.
PUK
Personal Unlock Code. Supplied together with
UIM card. It is used to unlock the UIM card if you
input wrong PIN code three times and UIM card is
locked. You can also use it to modify PIN code.
MCC
Mobile Country Code
Call waiting
A service provided by the network, which allows
you to answer another incoming call without
interrupting the active call, but it is different from
Multiparty. You can only talk to one party while
another party is held at the same time.
Call diverting
A service provided by the network, which allows
you to divert an incoming call to a specified
number in different circumstances. Normally
divided into: divert all, divert if busy, divert if no
answer and diver if not connected.
Divert all
All incoming calls will be diverted by the network