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Glossary of Terms 99
Glossary of Terms
APN
Access Point Name. Directs the user to the gateway or
the required service.
CHAP
Challenge Handshake Authentication Protocol. A security
feature in the GPRS network.
Copy
Copies selected text from short text message without
removing it from the original message.
CSD
Circuit Switched Data. A communication method used to
transmit data over telephone connections.
Cut
Permanently removes selected text from short text
message.
DTMF Tones
Dual Tone Multi-Frequency tones allow you to
communicate with computerised phone systems, voice
mailboxes etc.
EMS
Enhanced Message Service. Upgraded feature of Text
Messages.
GPRS
General Packet Radio Service. A GSM data transmission
technique that transmits and receives data in packets
rather than setting up a continuous channel. It makes
very efficient use of available radio spectrum and users
pay only for the volume of data sent and received.
GSM
Global System for Mobile Communications. The name
given to the advanced digital technology that your phone
uses.
MMS
Multimedia Messaging Service. Attach images and music
to text message.
Network
Operator
The organisation responsible for operating a GSM
network.
PAP
Password Authentication Protocol. A security feature in
the GPRS network.
Password
Used to control Call Bar. Supplied by your Service
Provider.