Glossary
156
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.
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 be sent by
e-mail. In addition to the text content of SMS, MMS
messages can contain still images, voice or audio
clips, and also video clips and presentation
information.
Multi-party 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
157
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.
