Filter
Top Products
Glossary
165
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 in
the back of the phone and is protected by the
battery.
SMS (Short Message Service)
Network service for 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.
Soft Keys
Two keys marked and on the phone, the
purpose of which:
• varies according to the function that you are
currently using
• is indicated on the bottom line of the display just
above the corresponding key
Voice mail
Computerised answering service that automatically
answers your calls when you are not available,
plays a greeting (optionally in your own voice), and
records a message.