User's Manual

LTE Module Series
EC21 Hardware Design
EC21_Hardware_Design Confidential / Released 90 / 94
PAP Password Authentication Protocol
PCB Printed Circuit Board
PDU Protocol Data Unit
PPP Point-to-Point Protocol
QAM Quadrature Amplitude Modulation
QPSK Quadrature Phase Shift Keying
RF Radio Frequency
RHCP Right Hand Circularly Polarized
Rx Receive
SGMII Serial Gigabit Media IndependentInterface
SIM Subscriber Identification Module
SIMO Single Input Multiple Output
SMS Short Message Service
TDD Time Division Duplexing
TDMA Time Division Multiple Access
TD-SCDMA Time Division-Synchronous Code Division Multiple Access
TX Transmitting Direction
UL Uplink
UMTS Universal Mobile Telecommunications System
URC Unsolicited Result Code
USIM Universal Subscriber Identity Module
Vmax Maximum Voltage Value
Vnorm Normal Voltage Value
Vmin Minimum Voltage Value
V
IH
max Maximum Input High Level Voltage Value