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                                                |
+----------------+------------------------------------------------------------------+