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Phone Password
Security code used to unlock the phone when you have
selected the option to lock it automatically each time it
switches on.
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.
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DCS
Digital cellular network standard based on the GSM
network architecture. With the higher frequency range
(1800 MHz for DCS instead of 900 MHz for GSM), more
radio channels can be made available, thus allowing the
network to support more subscribers and traffic.
Dual Band
Ability to operate with both DCS (1800 MHz) and GSM
(900 MHz) networks. The phone automatically uses the
network with the strongest signal and even switches
networks during a call within the same operator’s
network.
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.
Line Identification Services (Caller ID)
Services allowing subscribers to view or block the
telephone numbers of callers.
Multiparty Calling
Ability to establish a conference call involving up to five
additional parties.
