The glossary contains terms and acronyms that are used in this document.
AT command
A command used to control the modem.
AT command
Cat-NB1
NB-IoT
User Equipment (UE) category with 200 kHz UE bandwidth and a single RX antenna, specified in 3GPP Release 13.
Cat-NB2
An upgraded version of
Cat-NB1, specified in 3GPP Release 14.
Development Kit (DK)
A hardware development platform used for application development.
DK
Internet Protocol (IP)
The network layer communications protocol in the Internet protocol suite for relaying datagrams across network boundaries. Its routing function enables internetworking, and essentially establishes the Internet.
IP
Long-Term Evolution (LTE)
A wireless broadband communication standard for mobile devices and data terminals, based on the GSM/EDGE and UMTS/HSPA technologies.
LTE
LTE-M
An open standard that is most suitable for medium throughput applications requiring
low power, low latency, and/or mobility, like asset tracking, wearables, medical, POS, and
home security applications. Also known as Cat-M1.
Memfault
A cloud-based platform for connected device monitoring, debugging, and
updating.
Non-access Stratum (NAS)
In telecom protocol stacks, the highest stratum of the control plane between the core
network and User Equipment (UE). The layer is used to manage the establishment of
communication sessions and for maintaining communications with the UE as it
moves.
NAS
nRF Cloud
Nordic Semiconductor's platform for connecting IoT devices to the cloud, viewing and
analyzing device message data, prototyping ideas that use Nordic Semiconductor chips, and
more. It includes a public REST API that can be used for building IoT solutions. See
nRF Cloud portal (nrfcloud.com).
Packet Data Network (PDN)
A network that provides data services.
PDN
Radio Resource Control (RRC)
A protocol used in UMTS, LTE, and 5G on the radio interface. It is an OSI model
network layer 3 protocol used between the User Equipment and Base Station.
RRC
Real Time Transfer (RTT)
A proprietary technology for bidirectional communication that supports J-Link devices
and ARM-based microcontrollers, developed by SEGGER Microcontroller.
RTT
System in Package (SiP)
Several integrated circuits, often from different technologies, enclosed in a single module that performs as a system or subsystem.
SiP
System on Chip (SoC)
A microchip that integrates all the necessary electronic circuits and components of a
computer or other electronic systems on a single integrated circuit.
SoC
Universal Asynchronous Receiver/Transmitter (UART)
A hardware device for asynchronous serial communication between devices.
UART
User Equipment (UE)
Any device used by an end-user to communicate. The UE consists of the Mobile Equipment
(ME) and the Universal Integrated Circuit Card (UICC).
UE
Universal Serial Bus (USB)
An industry standard that establishes specifications for cables and connectors and
protocols for connection, communication, and power supply between computers, peripheral devices,
and other computers.
USB
Wireshark
A free software tool that captures wireless traffic and reproduces it in a readable format. It is a cross-platform network protocol analyzer that can be used to view, analyze, and troubleshoot packets sent over a data network.