List of abbreviations 6.4 – 2N Analogue GSM gateway 2N EasyGate PRO - Manual, 1749 v1.03 User Manual
Page 76
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List of Abbreviations
6.4
76
n
RS-232C
a PC serial port standard
n
SIM
Subscriber Identity Module - a chip-equipped module to be inserted in a
mobile device for identification in network
n
SMS
Short Message Service, a term for the message system in mobile network,
used for message too
n
SW
Software
n
TTL
Transistor-Transistor Logic - a standard digital technology defining voltage for
levels 0 and 1
n
PSTN
Public Switched Telephone Network
n
UMTS
Universal Mobile Telecommunication System – third generation of mobile
network communication system
n
WCDMA
Wideband Code Division Multiple Access – technology of wireless transmitting
in UMTS network, allows higher data transmit rate than GSM technology
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