2N Analogue GSM gateway 2N EasyGate - Manual, 1575 v1.1.0.2 - Manual (Page 65)

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