2N StarGate/BlueTower v5.3 - Manual (Page 186)

186
2N TELEKOMUNIKACE a.s., www.2n.cz
®
7.3 List of Abbreviations
List of Abbreviations in the document:
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 Multi Frequency – tone dialling
EG
StarGate/BlueTower
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
SIM
Subscriber Identity Module – a chip–equipped module to be inserted in a GSM
device for identification
SMS
Short Message Service, a term for the system and one unit (message)
SW
Software
TTL