Glossary
122
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 programme 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.”
MMS (Multimedia Message Service)
A message service for the mobile environment,
standardized by the WAP Forum and the 3rd
Generation Partnership Program (3GPP). For
phone users, MMS is similar to Short Message
Service (SMS)-it provides automatic, immediate
delivery of user-created content from phone to
phone. The message addressing used is primarily
phone numbers, thus the traffic goes from phone
to phone. MMS also provides support for e-mail
addressing, so that messages can also be sent by
e-mail. In addition to the text content of SMS,
MMS messages can contain still images, voice or
audio clips, and later also video clips and
presentation information.
Multiparty Calling
Ability to establish a conference call involving up
to five additional parties.
Glossary
123
Packet-Switched
A type of network in which relatively small units
of data called packets are routed through a
network based on the destination address
contained within each packet. Today’s Internet is
a quintessential packet-switched network.
Whereas voice requires a smooth flow of traffic to
avoid echo and breakup, data can be cut into
small packets with each being sent across the
network and reassembled at the final
destination. Packet inevitably allows a greater
amount of users because it does not require a
dedicated open circuit. PDC-P in Japan, GPRS in
Europe and all the future 3G networks will be
packet-switch.
PIN (Personal Identification Number)
Security code that protects the phone/SIM
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.
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.
SMS (Short Message Service)
Network service sending and receiving messages
to and from another subscriber without having to
speak to the correspondent. The message
created or received can be displayed, received,
edited or sent.
Z100.book Pages 122 - 123 Thursday, October 9, 2003 9:52 AM
