Glossary
140
GPRS (General Packet Radio Service)
New non-voice value-added service that allows
information to be sent and received across a mobile
telephone network. GPRS guaranties continuous
connection to the Internet for mobile phone and
computer users. It is based on the Global System
for Mobile Communication (GSM) circuit-switched
cellular phone connections and the Short Message
Service (SMS).
GSM (Global System for Mobile
Communication)
International standard for cellular communication,
guaranteeing compatibility between the various
network operators. GSM covers most European
countries and many other parts of the world.
Java
Programming language generating applications that
can run on all hardware platforms, whether small,
medium or large, without modification. It has been
promoted for and geared heavily to the Web, both
for public Web sites and Intranets. When a Java
program runs from a Web page, it is called a
Java
applet
. When it is run on a mobile phone or pager, it
is called a
MIDlet
.
Multiparty Calling
Ability to establish a conference call involving up to
five additional parties.
Phone Password
Security code used to unlock the phone when you
have selected the option to lock it automatically
each time it switches on.
Glossary
141
PIN (Personal Identification Number)
Security code that protects the phone against
unauthorised use. The PIN is supplied by the
service provider with the SIM card. It may be a four
to eight-digit number and can be changed, as
required.
PUK (PIN Unblocking Key)
Security code used to unlock the phone when an
incorrect PIN has been entered three times in
succession. The eight-digit number is supplied by
the service provider with the SIM card.
Roaming
Use of your phone when you are outside your home
area (when travelling for example).
SDN (Service Dialling Numbers)
Telephone numbers supplied by your network
provider and giving access to special services, such
as voice mail, directory inquiries, customer support
and emergency services.
SIM (Subscriber Identification Module)
Card containing a chip with all the information
required to operate the phone (network and
memory information, as well as the subscriber’s
personal data). The SIM card fits into a small slot
on the back of the phone and is protected by the
battery.
