User Guide

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GM500-U1G_A
Hardware Development Guide
LDO Low-Dropout
LED Light Emitting Diode
LTE Long Term Evolution
ME Mobile Equipment
MO Mobile Origination Call
MT Mobile Termination Call
MSB Most Significant Bit
PC Personal Computer
PCB Printed Circuit Board
PDA Personal Digital Assistant
PDU Protocol Data Unit
PAP Password Authentication Protocol
PPP Point to Point Protocol
RTC Real Time Clock
SMS Short Messaging Service
SMT Surface Mount Technology
SPI Serial Peripheral Interface
TBD To Be Determined
TCP Transmission Control Protocol
TIS Total Isotropic Sensitivity
TRP Total Radiated Power
TVS Transient Voltage Suppressor
UART Universal Asynchronous Receiver-Transmitter
UDP User Datagram Protocol
UL Up Link
USB Universal Serial Bus
USIM Universal Subscriber Identity Module
URC Unsolicited result code
VIH Logic High level of input voltage
VIL Logic Low level of input voltage
VOH Logic High level of output voltage
VOL Logic Low level of output voltage