Quectel LTE Standard Module Series - Page 55

LTE Standard Module Series
EG21-G Mini PCIe Hardware Design
EG21-G_Mini_PCIe_Hardware_Design 54 / 54
PDU
Protocol Data Unit
POS
Point of Sale
PPP
Point-to-Point Protocol
RF
Radio Frequency
RTS
Ready To Send
Rx
Receive
SIMO
Single Input Multiple Output
SMS
Short Message Service
TX
Transmitting Direction
TVS
Transient Voltage Suppressor
UART
Universal Asynchronous Receiver & Transmitter
UL
Up Link
URC
Unsolicited Result Code
USB
Universal Serial Bus
(U)SIM
(Universal) Subscriber Identification Module
WCDMA
Wideband Code Division Multiple Access