Smart Machine Smart Decision
SIM800C_Hardware_Design_V1.02 50 2015-4-27
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
RF Radio Frequency
RMS Root Mean Square (value)
RX Receive Direction
SIM Subscriber Identification Module
SMS Short Message Service
TE Terminal Equipment, also referred to as DTE
TX Transmit Direction
SINAD Signal to Noise and Distortion Ratio
UART Universal Asynchronous Receiver & Transmitter
URC Unsolicited Result Code
USSD Unstructured Supplementary Service Data
Phonebook abbreviations
FD SIM fix dialing phonebook
LD SIM last dialing phonebook (list of numbers most recently dialed)
MC Mobile Equipment list of unanswered MT calls (missed calls)
ON SIM (or ME) own numbers (MSISDNs) list
RC Mobile Equipment list of received calls
SM SIM phonebook
NC Not connect
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