List of Abbreviations
6.3
174
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
Transistor-Transistor Logic - a standard digital technology defining voltage for
levels 0 and 1
PSTN
Public Switched Telephone Network
Summary of Contents for BlueStar
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