User's Manual

LTE Module Series
EC25Hardware Design
EC25_Hardware_DesignConfidential / Released 85 / 90
DL Downlink
DTR Data Terminal Ready
DTX Discontinuous Transmission
EFR Enhanced Full Rate
ESD Electrostatic Discharge
FDD Frequency Division Duplex
FR Full Rate
GLONASS
GLObalnaya NAvigatsionnaya Sputnikovaya Sistema, the Russian Global
Navigation Satellite System
GMSK Gaussian Minimum Shift Keying
GNSS Global Navigation Satellite System
GPS Global Positioning System
GSM Global System for Mobile Communications
HR Half Rate
HSPA High Speed Packet Access
HSDPA High Speed Downlink Packet Access
HSUPA High Speed Uplink Packet Access
I/O Input/Output
Inorm Normal Current
LED Light Emitting Diode
LNA Low Noise Amplifier
LTE Long Term Evolution
MIMO Multiple Input Multiple Output
MO Mobile Originated
MS Mobile Station (GSM engine)
MT Mobile Terminated