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Glossary
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Glossary
Term Description
Dual Mode
Telephone
Telephone that operates with two standard
elements: GSM and Wifi
Protection Messages that are sent as protected mes-
sages can only be read by certain people.
Messages sent to a portable telephone by a
digital telephone are often protected if oper-
ated wirelessly.
IMEI The identification number for GSM tele-
phones. This number can be used to block
stolen cellular telephones.
ISP A company that offers special services.
GPRS Allows users to more quickly access and
send data from a cellular telephone.
GSM Internationally recognised element for digi-
tal communication with a field of 800 MHz,
1800 MHz and 1900 MHz. It was introduced
in 1991 and is used predominantly in Asia
and Europe but not in the USA. GSM tele-
phones use a SIM card that contains the
user’s information. Every GSM is pro-
grammed immediately after the SIM card is
assigned, a feature that makes GSM tele-
phones easy to rent or loan to others. The
GSM offers an SMS service for sending text
messages of up to 160 characters to other
telephones that also operate with a SIM
card.
MMS MMS allows users to communicate multi-
media data such as images, voice mes-
sages and video clips.
VoIPon Solutions www.voipon.co.uk sales@voipon.co.uk Tel: +44 (0) 1245 600560