Manual

List of Abbreviations 6.4
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6.4 List of Abbreviations
n APN
Access Point Name – necessary for the GPRS service
n CLIP
Calling Line Identification Presentation
n CSD
Circuit Switched Data
n COM
PC serial port
n DTMF
Dual Tone Multifrequency - tone dialing
n EG
EasyGate
n FSK
Frequency Shift Keying
n FXO
an interface electrically identical with a standard telephone (opposite side =
FXS interface)
n FXS
a telephone interface allowing standard telephone connection (opposite side
= FXO interface)
n FW
Firmware - similar to SW, a term for the central microprocessor program
n GSM
Group Switched Mobile system - the present standard digital mobile telephone
network
n GPRS
General Packet Radio Service - high-speed data transmission for GSM
networks
n HW
Hardware - an electronic device, circuit, board, component, etc. in this context
n HSDPA
High-Speed Downlink Packet Access – mobile network protocol for high speed
data transmit to the user (download)
n P(A)BX
Private (Automatic) Branch Exchange
n PC
Personal Computer (based on the IBM PC standard)
n PIN
Personal Identification Number - a SIM card securing password
n PUK
Personal Unblocking Key - a password used to unblock a blocked SIM card
after repeated wrong PIN entering