Maxon MX-7930, User Manual, Page: 67 / 82

Miscellaneous
67
Abbreviations and acronyms
What is PIN and what is PUK? Access to
use a cellphone is most often protected
by a code known as “PIN” - Personal
Identification Number. Your SIM card
comes with a default PIN that you can
change to any code you prefer. See p. 9
for details. If you forget your code, or
by mistake enter a faulty code three
times in a row, the SIM card will lock.
To unlock, you must enter the Personal
Unblocking Key or “PUK” code that
came with your SIM card.
What is IMEI? IMEI stands for
International Mobile Equipment
Identifier and is an identification system
that can recognize every mobile phone
by a specific number. If a phone is
stolen, the IMEI system is capable of
blocking it on all network operators that
support the system.
address on the Mobile Internet.
What is GPRS? General Packet Radio
System is a service protocol built on
GSM technology. GPRS allows several
mobile phone users to share the same
connection. Charges may thus be based
on the amount of transferred data
rather than on airtime.
What is CSD? A wireless service protocol
used for WAP. CSD stands for Circuit
Switched Data and will enable continu-
ous connection and payment by the
amount of data transferred.
What is SIM? Subscriber Identity Module
or SIM is the little gold-plated plastic
card that you get from your network
operator and which holds the unique
data the network needs to identify your
phone.
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