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Glossary of Terms
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 for the GPRS network.
CSD Circuit Switched Data. A communication method used to transmit data over telephone connections.
DTMF Tones Dual Tone Multi-Frequency tones allow you to communicate with computerized phone systems, voice
mailboxes, etc.
GPRS General Packet Radio Service. A GSM 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 volume of data sent and received.
GSM Global System for Mobile communications. The name given to the advanced digital technology that your
phone uses.
Network Operator
The organization responsible for operating a GSM network.
PAP Password Authentication Protocol. A security feature in the GPRS network.
Password Used for the control of Call Bar. Supplied by your service provider.
PIN Personal Identification Number used for SIM security. Supplied by your service provider. If the PIN is entered
incorrectly 3 times, the PIN will be blocked.
PIN2 Personal Identification Number used for the control of Fixed Dial Store and Call Charge metering. If the PIN2
is entered incorrectly 3 times, the PIN2 will be blocked.
PUK/PUK2 PIN/PIN2 Unblocking Key. Used to unblock the PIN/PIN2. Supplied by your service provider. If the PUK/
PUK2 is entered incorrectly 10 times, the PUK/PUK2 will be blocked.