Quectel EC21 Series User Manual

LTE Standard Module Series
EC21_Series_Hardware_Design
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SAW Surface Acoustic Wave
SDR Software-Defined Radio
SGMII Serial Gigabit Media Independent Interface
SIM Subscriber Identification Module
SIMO Single Input Multiple Output
SMS Short Message Service
SMTP Simple Mail Transfer Protocol
SMTPS Simple Mail Transfer Protocol Secure
SSL Secure Sockets Layer
TCP Transmission Control Protocol
TDD Time Division Duplexing
TDMA Time Division Multiple Access
TD-SCDMA Time Division-Synchronous Code Division Multiple Access
TX Transmitting Direction
UART Universal Asynchronous Receiver/Transmitter
UDP User Datagram Protocol
UL Uplink
UMTS Universal Mobile Telecommunications System
URC Unsolicited Result Code
USB Universal Serial Bus
(U)SIM (Universal) Subscriber Identity Module
Vmax Maximum Voltage
Vnom Nominal Voltage
Vmin Minimum Voltage
V
IH
max Maximum High-level Input Voltage

Quectel EC21 Series Specifications

General

Brand	Quectel
Model	EC21 Series
Category	Control Unit
Language	English