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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 computerised phone systems, voice
mailboxes, etc.
EMS
Enhanced Messaging Services. One of the mail systems which use the cellular phone, and service by which
data of e-mail of the text, etc. can be transmitted and received.
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.