Ericsson R320s User Manual page 150

PUK
Personal Unblocking Key Code – used to unlock a blocked SIM card. This
comes with your subscription.
Restrict Calls
enables you to restrict or bar certain or all types of calls to and from your
mobile phone, i.e. outgoing calls, outgoing international calls, incoming calls.
Barring is switched on with a personal code. To use this service, it must be
supported by your network.
Roaming
within your home network, this means that your mobile phone automatically
sets up communication procedures with different radio base stations when on
the move.
Scroll
u l r
move between the menus and functions by pressing , or .
Select
choose a menu or function by pressing the key.
Y E S
Semi-Duplex
in handsfree equipment, full duplex means that the connection is open for both
parties to talk simultaneously. The opposite, simplex, is when it is open to one
at a time. Semi-duplex gives close to, but not complete, duplex functionality.
Service Provider
a company that provides services and subscriptions to mobile phone users.
Short Message Service (SMS)
allows messages of up to 160 characters to be sent and received via the
network operator's message centre to your mobile phone. Messages are stored
if the phone is off or out of reach ensuring that they reach you. To use this
service, it must be supported by your network.
SIM card
Subscriber Identity Module card – a card that must be inserted in any
GSM-based mobile phone. It contains subscriber details, security information
and memory for a personal directory of numbers. The card can be a small
plug-in type or credit card-sized but both types have the same functions. Your
phone uses the small plug-in card.
150 Glossary