Smart Machine Smart Decision
SIM808_Hardware Design_V1.00 2014.03.27
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B. Terms and Abbreviations
Table 54: Terms and Abbreviations
Abbreviation Description
ADC Analog-to-Digital Converter
AMR Adaptive Multi-Rate
CS Coding Scheme
CSD Circuit Switched Data
CTS Clear to Send
CEP Circular Error Probable
DTE Data Terminal Equipment (typically computer, terminal, printer)
DTR Data Terminal Ready
DTX Discontinuous Transmission
EFR Enhanced Full Rate
EGSM Enhanced GSM
EGNOS European Geostationary Navigation Overlay Service
ESD Electrostatic Discharge
ETS European Telecommunication Standard
FR Full Rate
GPRS General Packet Radio Service
GSM Global Standard for Mobile Communications
GPS Global Positioning System
GAGAN The GPS Aided Geo Augmented Navigation
HR Half Rate
IMEI International Mobile Equipment Identity
Li-ion Lithium-Ion
MO Mobile Originated
MS Mobile Station (GSM engine), also referred to as TE
MT Mobile Terminated
MSAS Multi-Functional Satellite Augmentation System
NMEA National Marine Electronics Association
PAP Password Authentication Protocol
PBCCH Packet Broadcast Control Channel
PCB Printed Circuit Board
PCL Power Control Level
PCS Personal Communication System, also referred to as GSM 1900
PDU Protocol Data Unit
PPP Point-to-point protocol
QZSS Quasi-Zenith Satellites System
RF Radio Frequency
RMS Root Mean Square (value)
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