Longsung-A9500-NB-IoT-Module-User-Manual-V2-3576207

A9500 user manual Page 10 of 37
GSM
Global Standard for Mobile Communications
HR
Half Rate
HSDPA
High Speed Downlink Packet Access
HSUPA
High Speed Uplink Packet Access
HSPA
HSPA High-Speed Packet Access
IEC
International Electro-technical Commission
IMEI
International Mobile Equipment Identity
I/O
Input/Output
ISO
International Standards Organization
ITU
International Telecommunications Union
bps
bits per second
LED
Light Emitting Diode
M2M
Machine to machine
MO
Mobile Originated
MT
Mobile Terminated
NTC
Negative Temperature Coefficient
PC
Personal Computer
PCB
Printed Circuit Board
PCS
Personal Cellular System
PCI
Peripheral Component Interconnect
PCM
Pulse Code Modulation
PCS
Personal Communication System
PDU
Packet Data Unit
PPP
Point-to-point protocol
PS
Packet Switched
QPSK
Quadrate Phase Shift Keying
SIM
Subscriber Identity Module
TCP/IP
Transmission Control Protocol/ Internet Protocol
UART
Universal asynchronous receiver-transmitter
USIM
Universal Subscriber Identity Module
UMTS
Universal Mobile Telecommunications System
USB
Universal Serial Bus
WCDMA
Wideband Code Division Multiple Access