User guide

List of Abbreviations 6.4
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6.4 List of Abbreviations
 APN
Access Point Name – necessary for the GPRS service
 CLIP
Calling Line Identification Presentation
 CSD
Circuit Switched Data
 COM
PC serial port
 DTMF
Dual Tone Multifrequency - tone dialing
 EG
EasyGate
 FSK
Frequency Shift Keying
 FXO
an interface electrically identical with a standard telephone (opposite side =
FXS interface)
 FXS
a telephone interface allowing standard telephone connection (opposite side
= FXO interface)
 FW
Firmware - similar to SW, a term for the central microprocessor program
 GSM
Group Switched Mobile system - the present standard digital mobile telephone
network
 GPRS
General Packet Radio Service - high-speed data transmission for GSM
networks
 HW
Hardware - an electronic device, circuit, board, component, etc. in this context
 P(A)BX
Private (Automatic) Branch Exchange
 PC
Personal Computer (based on the IBM PC standard)
 PIN
Personal Identification Number - a SIM card securing password
 PUK
Personal Unblocking Key - a password used to unblock a blocked SIM card
after repeated wrong PIN entering
 RS-232C
a PC serial port standard