Terms and Abbreviations

In this document, unless otherwise specified, “terminal” and “device” both refer to terminal device designed by Queclink. In addition, this document also contains the following terms and abbreviations:

Abbreviations	Description
ACK	Acknowledgement
AGPS	Assisted Global Position System
APN	Access Point Name
ASCII	American National Standard Code for Information Interchange
BER	Bit Error Rate
BLE	Bluetooth Low Energy
CPU	Central Processing Unit
DTC	Diagnostic Trouble Code
ECU	Electronic Control Unit
GNSS	Global Navigation Satellite System
GPRS	General Packet Radio Service
GPS	Global Position System
GSM	Global System for Mobile Communication
HDOP	Horizontal Dilution of Precision
HTTP	HyperText Transfer Protocol
ICCID	Integrated Circuit Card Identity
IMEI	International Mobile Equipment Identity
IMSI	International Mobile Subscriber Identity
IoT	Internet of Things
IP	Internet Protocol
LAC	Location Area Code
LTE	Long Term Evolution
MCC	Mobile Country Code
MCU	Micro Controller Unit
MIL	Malfunction Indicator Lamp
MNC	Mobile Network Code
MO	Mobile Originated
MQTT	Message Queuing Telemetry Transport
MT	Mobile Terminated
NFC	Near Field Communication
NTP	Network Time Protocol
OBD	On-Board Diagnostics
PID	Parameter ID
PLMN	Public Land Mobile Network
RAT	Radio Access Technology
RSSI	Received Signal Strength Indicator
RPM	Revolutions per Minute
RTMP	Real Time Messaging Protocol
SIM	Subscriber Identity Module
SMS	Short Message Service
SN	Serial Number
SSID	Service Set Identifier
SVOD	Streaming Video On Demand
TCP	Transmission Control Protocol
UDP	User Datagram Protocol
UMTS	Universal Mobile Telecommunications System
USIM	Universal Subscriber Identity Module
UTC	Coordinated Universal Time
VIN	Vehicle Identification Number
WAN	Wide Area Network
Wi-Fi	Wireless Fidelity