A2DP 

 Advanced Audio Distribution Profile  

AAAA

Quad A DNS resource records to hold IPv6 addresses

AAC

Advanced Audio Coding

AAMP

Advanced Adaptive Media Player - AAMP is an application which uses gstreamer to present IP Video Streams

ABR

Adaptive Bit Rate

ABR/ABS

Adaptive bitrate streaming or ABR streaming, sometimes shortened to ABS, is a technique for dynamically adjusting the compression level and

video quality of a stream to match bandwidth availability. Older video streaming approaches relied on distributing a fixed bitrate video stream. Both HLS and DASH are ABR based

Abstraction (Architecture concept)

Well-defined, idealized interface, intended to reduce complexity of layered software systems

AC3

Audio Coding 3

ACL

Access Control List

ACR

Alternate Content Router

ACS

Auto-Configuration Server

ADM

Ad Decision Manager/Advertising Manager

ADS

Application Discovery Service

ADSG 

Advanced DOCSIS Settop Gateway

AES 

Advanced Encryption Standard

AKE

Authentication and Key Exchange

ALG

Application Layer Gateway

AMR

Asynchronous Message Router

AMS

Ad Management Service

ANQP

Access Network Query Protocol

AP 

Access point

APDU

Application Protocol Data Unit

API

Application Programming Interface

App Store (concept within RDK)

A pre-integrated platform of apps available for Operators using the RDK-V platform

ARFCN 

Absolute Radio Frequency Channel Number

ARP

Address Resolution Protocol

ASP

Advanced Support Program

ATK

Accessibility Toolkit 

ATSC

Advanced Television Systems Committee standards. A set of standards developed by the Advanced Television Systems Committee for digital television transmission over terrestrial, cable, and satellite networks.

AVE

Adobe Video Engine

AVRCP

 Audio/Video Remote Control Profile

AVS

Amazon Voice Server

AWG

Advanced Wireless Gateway

AWS

Amazon Web Services

Badger

 aka $badger, a JavaScript UX library built by OTTX

BLE

Bluetooth Low Energy

BOWS

Business Object Web Service, provisions XSCT to authorize playback

Brctl

bridge Control

BSP

Board Support Package

BSS

Business Support Systems

BSSID

Basic Service Set Identifier

CAM

Cable Access Module/Content Access Manager

CANH

Conditional Access Network Handler for OCAP

CAS

Conditional Access Server (or System)

CAT

Conditional Access Table

CATV

Community Access TV

CBR

Commercial Business Router

CCAP

Converged Cable Access Platform - combined CMTS and edge QAM requirements driven partially by space and power efficiency but this also assists with a gradual migration to all IP delivery

CCI

Copy Control Information

CCSP

Common Component Software Platform

CCTV

Closed Caption Television

CDAI

Client side DAI (Dynamic Ad Insertion)

CDC

Connected Device Configuration 

CDM

Content Decryption Module. The term comes from the Encrypted Media Extensions Specification (EME). This is a clientside component that provides content protection services to an application, such as generating license requests and performing decryption.

CDN

Content Delivery Network (also known as Infinity Phase 2 and CCDN)

cDVR

Cloud DVR. The system that allows customers to view DVR-recorded programs from any IP device such as a computer, phone, or tablet. Digital video recording service via the cloud. Video Compression reduces the data used to encode digital video content. This reduction in data translates to benefits such as smaller storage requirements and lower transmission bandwidth requirements, for a clip of video content

CE

Customer Edge

CEA-608

Standard for Closed Captioning for NTSC TV Broadcast

CEA-708

Standard for Closed Captioning for ATSC digital television stream

CEDIA

Custom Electronic Design and Installation Association

CEDM

Content Encryption Decryption Module 

Cellular based (4G/LTE, 5G)

Wireless transport method of delivering data (including OTT video) via existing cellular infrastructure for fixed residential use

CEP

Cable Entry Point

CHAP

Challenge Handshake Authentication Protocol

CHILA

The CableCARD Host Interface Licensing Agreement (CHILA) restricts the technologies that CE companies may use for distributing video from host devices.

CID

Content Identifier

CIF

Common Intermediate Format (CIF) is a DASH-like manifest format used to describe the elements, attributes, and values of a transport stream.

CIFS 

Common Internet File System 

CIM

Component Interface Module 

CLD

Color layout descriptor – frame fingerprint. Used in ACR

CLI

Command Line Interface 

CM

Cable Modem

CMF

Code Management Facility

CMTS

Cable Modem Termination Systems

CNR

Carrier to Noise Ratio

COAM

Customer owned and maintained

Cobalt

The codename for the native YouTube app

COM

Component Object Model

Compositor

Window and input manager

COSA

Cisco Open Source Architecture

CPC

Client Platform Components

CPE

Customer premise equipment CPE 

CR

Component Registrar

CRLs

Certificate Revocation Lists

CRUD

Create, Read, Update, and Delete

CSP

Communications Service Providers

CSR

Customer Service Representative

CWMP

CPE WAN Management Protocol

DAC

Digital-to-Analog converter / Digital Addressable Controller

DAI

Dynamic Ad Insertion

DASH 

Dynamic Adaptive Streaming over HTTP 

DBS

Direct Broadcast Satellite. Primarily a video delivery method directly to end users via Satellite, but data can be sent as well.

DCA

Data Collection and Analysis

DCM

Device Configuration Manager

DCS

Dynamic Channel Selection

DDNS

Dynamic Domain Name System

Demuxer

De-multiplexer

DES 

Data Encryption Standard

DFS

Dynamic Frequency Selection

DHCP

Dynamic Host Configuration Protocol

DIAL

Discovery and Launch

DLNA 

Digital Living Network Alliance

DLNA CVP-1

DLNA Commercial Video Player

DMCLI

Database Manager Command Line Interface

DML

Data Model Management Layer

DMP

Digital Media Player.  This is a DLNA-compliant client device.

DMS

Digital Media Server.  This is a DLNA-compliant server device.

DNCS

Digital Network Control System - The Cisco Head End main component used by MSOs to provide network services to their customers.

DNS 

Domain Name System

DOCSIS 

Data Over Cable Service Interface Specifications

Dolby MS11 

Dolby Multi Stream Decoder 

DPoE

Docsis Provisioning of EPON

DPP

Device Provisioning Protocol 

DRM

Digital Rights Management

DRM

Digital Rights Management - A system for ensuring that content owners' rights are protected for media that is streamed or delivered to clients.

DS

Device Settings

DSCP

Differentiated Services Field Codepoints

DSL

Digital Subscriber Line

DSLAM

Digital Subscriber Line Access Multiplexers

DS-Lite

Dual Stack Lite

DTCP 

Digital Transmission Content Protection

DTCP-IP

Digital Transmission Content Protection over IP.  It provides authentication keys, encryption, copy and usage information to help protect digital assets as they are transmitted over IP networks.

DTS

Digital Theater Sound

DUT

Device Under Test

DVB 

Digital Video Broadcast(ing) 

DVS

Descriptive Video Services 

E2E

End To End

EAP

Extensible Authentication Protocol 

EAS 

Emergency/Electronic Alert System.  A system designed to inform subscribers that a national emergency is taking place. Also used for local weather alerts.

EasyMesh

Effort with the goal of a  standardization spec intended to allow broadband devices to interoperate within a single mesh network from different manufacturers

ECB

Ethernet to Coax Bridge

ECM

Entitlement Control Message

EDID

Extended Display Identification Data

E-EMI

Extended Encryption Mode Indicator

eEP

embedded End Point

EGL

Native Platform Graphics Interface

EIT

Event Information Table

ELAN

Ethernet private LAN

EME

EME Stands for "Encrypted Media Extensions Specification" and it is specified in the context of web browser.

eMG

embedded Media Gateway

EMI

Encryption Mode Indicator

EMM

Entitlement Management Message.  A message sent from the CASMR to a DTA to tell the DTA that a service is authorized or unauthorized.

Emulator

x86 based implementation of the RDK software stack.attempts to simplify the process of working with the RDK software stack without the need for a reference hardware platform.

Entitlement service

Provides three primary functions to determine a customer’s rights to receive a service or asset:
Entitlement topic data
Definition and implementation of business rules related to the entitlement decisions
Processing and determination of entitled events.

EOS

End Of Stream

EPG

Electronic Program Guide

EPON

Ethernet Passive Optical Network

EPS

Evolved Packet System

eRT

embedded Router

eSAFE

embeddedService/ApplicationFunctional Entities

Essos

Abstraction that allows for easy implementation of a compositor

ETV

Enhanced TV

E-UTRAN

Evolved Universal Terrestrial Radio Access network

EWAN

Ethernet WAN

FA    

Fallback Authentication

FEC

Forward Error Correction - most commonly used in connection with DOCSIS where variable outside plan conditions make robust error detection and correction essential.

FKPS

Field Key Provisioning System, source of truth for device identity

FLAPI

Flex API, middleware that sits between Flex & various TPX APIs

FlashAccess™

A technology for delivering secure, authorized and content-protected media across a network to a large number of devices.  FlashAccess that can be licensed from Adobe Systems 

Flex UI

Shorthand for the Flex Content Discovery UI, which is the main user interaction point, aside from watching video in an app

Fog

 Local IP buffer for time shifting IP Linear content.

FOG

Module for buffering linear streaming.

FPD

Front Panel Display

FPS

Frames Per Second

FQDN

Fully Qualified Domain Name

FTP

File Transfer Protocol

FTUE/OOBEGstreamer

First-time user experience / Out-of-box Experience, i.e. Initial set up UX

FWA  

Fixed Wireless Access

GAP

Global application platform

GAS

Generic Advertisement Service

Gateway

A device that provides services between two networks.  Typical RDK gateways are located in the customer premises, providing services to the devices within the home.

GDPR

General Data Protection Regulation

git

The git source code repository - see SVN

GLIB

An open source cross-platform library developed and maintain by the GNOME project that provides APIs for data structures, threaded programming primitives, and IO functions

GLIBC

A GNU Implementation of the standard C Library

GOP

Group of Picture used in MPEG2/4 Video data

GPIO

General Purpose Input/Output

GPON

Gigabit-capable Passive Optical Network 

GRE

Generic Routing Encapsulation 

GSM

Global System for Mobile Communications

Gstreamer

Audio & video pipeline framework used to decode video for playback

GUI

Graphical User Interface

GwProv

Gateway Provisioning

HAL

Hardware Abstraction Layer

Hammer

OTTX JavaScript experience library (subsumes $badger)

HAT

Hardware Attached on Top

HDCP

High Definition Content Protection

HDKb

HTTP Dynamic Streaming Broadcast SDK

HDMI

High Definition Multimedia Interface

HDR

High Dynamic Range - In regards to consumer displays, 4K generally equates to a 3840x2160-resolution panel. This means the typical 4K screen will offer 3,840 horizontal pixels and 2,160 vertical pixels. When you multiply these numbers together, you get a panel with more than 8 million pixels. This is four times the pixel density of a traditional 1080p HD panel.

HDS

HTTP Dynamic Streaming

HDTV

A digital television standard with four to six times the picture resolution of analog TVs. HDTV, standardized by the Advanced Television Systems Committee in 1996, doubled both vertical and horizontal resolution of analog TV displays, and added CD-quality, digital sound. 

Headless Gateway

A gateway device that does not provide local a UI.

HEVC

High Efficiency Video Coding

HID

Human Interface Device

HLD

High Level Design

HLS

HTTP Live Streaming

HMAC

Hash-based message authentication code

HNAP

Home Network Administration Protocol

HRV

Host Reset Vector

HS

Home Security 

HSS

Home Subscriber Server

HSD

High Speed Data

HTML5

Web-based technology allowing for the playback of video/audio/apps without specific development for the platform usedAbstraction (Architecture concept)

HTTP

Hypertext Trasmission Protocol - the protocol used by Web servers and Browsers on the Internet

HTTPS

HTTP over SSL - Secure transmission of HTTP that uses th Secure Sockets Layer.

IARM

Inter-Application Resource Manager.  This is the main system bus for Events and Messages in the RDK platform.  It implements a Publish-and-Subscribe metaphor.

ICC

Interface Controller Card

ICCID

Integrated Circuit Card Identifier

ICMP

Internet Control Message Protocol

IDL

Interface Definition Language

IDS

Intrusion Detection System

IGD

Internet Gateway Device Protocol

IMEI  

International Mobile Equipment Identity

IGMP

Internet Group Management Protocol

IMSI

International Mobile Subscriber Identity

IoT

Catch-all term for every day devices that can now be internet-connected

IPC

Interprocess Communication

IPP

Internet printing protocol.

IPPV

Impulse Pay-Per-View

IPsec

Internet Protocol Security

IPTV

Internet Protocol television. Generally, IPTV is a system that uses Internet protocols to render audio and video. The finer details can change depending on who's using the term. Web nerds who refer to IPTV are usually talking about Web video. 
In that case, IPTV is a synonym for broadband, streaming, and wireless video. (All About IPTV ). 

ISP

Internet Service Provider

IUCC  

IMSI(International Mobile Subscriber Identity) Unauthenticated Ciphering key

Java

A portable, object-oriented programming language originally developed by Sun MicroSystems.  Java programs are executed inside a JVM.

JSON

JavaScript Object Notation

JSPP

JavaScript Player Platform

JVM

Java Virtual Machine.  A software container for running Java programs.

L2TP

Layer Two Tunneling Protocol

L2VPN

Layer 2 Virtual Private Network

LDAP

Lightweight Directory Access Protocol

LED

Light Emitting Diode

LIBMM 

Library for Mobile Modems

Lightning

JavaScript visualization framework, aka lng

Lightning SDK

Set of components built in Lightning

LLDASH

Low Latency DASH. Initiative/Product feature to improve the stream playback as close to the live (~5sec)

LLID

Logical Link Identifier

LM

LAN Manager

LPA

Local Profile Assistant

lng

Lightning framework

LSA

Linear Segment Advertising

LSB

Linux Standard Base

LTE

Long Term Evolution 

LTSID

Local Transport Stream IDentifier

LXC

Linux Containers

MAF

Media Analytics Framework

MAF

media analytics framework

MBIM

Mobile Broadband Interface Model

MBSFN

Multicast-Broadcast Single Frequency Network

MCC

Mobile Country Code 

MCS

Modulation and Coding Scheme

MD5

Message Digest 5

MDC

Multicast Data Client

MDD

MAC Domain Descriptor

MIB

Management Information Base

MIMO

MDD IP Mode Override

MLD

Multicast Listener Discovery 

MM    

Mobility Management

MME 

Mobility Management Entity

MNC

Mobile Network Code

MNO

Mobile Network Operator

MoCA

Multimedia over Coax Alliance, MoCA is a standards organization that supports a technology to provide the backbone for home digital entertainment networks.

Modem– portmanteau of “Modulator/Demodulator”

Device located at the customer premise to connect local LAN to RF modulated access network.

Provides the actual connection to the outside internet.

MP1

MPEG-1 AudioLayer I, commonly abbreviated to MP1

MPEG2TS

MPEG2 Transport Stream

MPEG-TS 

Motion Pictures  Expert Group Transport Stream

MPTS

Multi Program Transport Stream

MSE

Media Source Extension

MSE/EME

EME is based on the HTML5 Media Source Extensions (MSE) specification, which enables adaptive bitrate streaming in HTML5 using e.g. MPEG-DASH with MPEG-CENC protected content.

MSISDN 

Mobile Station International Subscriber Directory Number

MSO 

Multi system operator-Industry term indicating a cable provider that owns and operators more than one system or group of systems.

MSM 

Mobile Station Modem

MTA

Media Terminal Adapter

MTBF

Mean Time Between Failure

MTU

Maximum Transmission Unit

MVP

Minimum Viable Product 

MVPD

Multichannel video providers

NAS

Network Attached Storage / Non-Access Stratum

NAT

Network address translation

Native Application

Typically an application which is written for the operating system of a receiver (set-top-box) rather than the middleware standard that may also be running on the receiver. ETV User Agents are implemented as native applications. (Source: Unisoft) .  What is a Native App?

NB

Northbound

NC

 Network Coordinator 

NCS

Network Call Signalling

nDVR

Network-Based Digital Video Recording

NIT

Network Information Table.  The Table ID extension is used to identify the available transmission networks together with a directory listing of transport streams and their originating network operator with descriptors listing the modulation and source of those streams.

NMS

Network Management System 

NP

Network Processor

NTP

Network Time Protocol

NTS

Near Term Storage

NTT

Network Text Table

NVM 

Non-Volatile Memory

NVOD

Near Video On Demand

NVRAM

Non-Volatile Random Access Memory

OAM

Operations, Administration and Maintenance

OAM&P

Operations, Administration, Maintenance and Provisioning

OCAP

Open Cable Application Platform for delivering applications and services on an RF network. 

OCAP-RI

OpenCable Application Platform Reference Implementation

OCDM

Open Content Decryption Module

OCF

Open Connectivity Forum

OCI

Operations Chronic Issue

ODID

On Demand (session) Identification

OEM

Original Equipment Manufacturer.  An OEM manufactures devices that may be sold in the market under a variety of brand names.

OFDM

Orthogonal Frequency Division Multiplexing

OIC

Open Interconnect Consortium

OID

Object Identifier

OLT

Optical Line Terminal

ONT

Optical Network Termination

ONU

Optical Network Unit

ONUID

Unique physical ONU identification number

OOB

Out-Of-Band

OOBE

Out of box experience, see FTUE

OP

Operating Procedure (Management System)

Open GL

Open Graphics Library - A low-level graphics toolkit that allows lines, shapes, text and other basic graphics elements to be rendered on screen.

Open GL/ES

OpenGL for Embedded Systems- a subset of OpenGL designed for embedded systems.

OpenCDM

Open Content Decryption Module

OpenCDN

A multi-site CDN implementation utilizing cache servers in strategic locations

OpenSync

Carrier-grade open-source software acting as the connection between in-home hardware devices and the cloud managing them.

OpEx

Operations Expenditure

ORC

Orchestration

OSD

On Screen Display/Diagnostic

OSMF

Open Source Media Framework

OSP

Online Services Platform

OSS

Open-Source Software

OSS

Operational support systems 

OSU

Online Sign up

OTA

Over the Air

Other user-apps

Smarthome, Network apps, Account management apps

OTT

Over The Top

OUI

Organizationally Unique Identifier

OWASP

Open Web Application Security Project

P2P

Peer-to-Peer

PA

Protocol Agent as in Snmp PA and TR069 PA

PAN

Personal Area Network as specified in IEEE 802.15.4

PAP

Password Authentication Protocol

PandM

Provisioning And Management

PAR

Performance, Availability, Reliability

PAT

Program Association Table

PCM

Pulse Code Modulation

PCP

Protected Content Packet

PCR

Program Clock Reference

PDN 

Packet Data Network

PDU

Power Distribution Unit

PE

Provider Edge

PES

Packetized Elementary Stream per [ISO/IEC 13818-1]

PGM

Pragmatic General Multicast / Pretty Good Multicast

PGW 

Packet Data Network Gateway

PHY

Physical Layer

PID

Program (or Packet) Identifier per [ISO/IEC 13818-1]

PII

Personally Identifiable Information (e.g. email address). This is information for which some form of security proceedures or cautions should probably be taken. This information can occasionally be encrypted at rest.

PING

Packet InterNet Groper

PKCS

Public-Key Cryptography Standard

PlayReady™

A DRM technology framework that can be licensed from Microsoft for streaming media using Digital Rights Management.

PLMN

Public Land Mobile Network

PMT

Program Map Table

POD

Password Of the Day

PoE

Power over Ethernet

PON

Passive Optical Network

PPPoE

Point-to-Point Protocol over Ethernet

PPTP

Point-To-Point Tunneling Protocol

PPV

Pay-Per-View  

PR

Package Release (Yocto)

Premium apps

RDK-V implemented user-apps that allow for the playback of content from said subscription and free services

PSC

Packaging Scripts

PSI

Program Specific Information

PSM

Persistent Storage Manager

PSN

Processor Serial Number 

PTS

Presentation Time Stamp

PVID

Port VLAN identifier

QA

Quality Assurance

QAM

Quadrature Amplitude Modulation - a QAM is used to convert a digital singal into an analog RF (radio Frequency) signal for transmission on a cable network.

QEM

Original Equipment Manufacturer

QMUX

QMI Multiplexing

QOS

Quality of Service

QPSK

Quadature Phase-Shift Keying - A digital modulation technique which changes the phase of the reference signal or carrier wave using four phases. US cable headends often use QPSK modulation for the out-of-band channel. 

Qt  ("Cute")

An open source, widely used windowing famework used by the RDK

RADD

Remote Addressable DANIS (Digital Addressable Network Interface Server) DLS (Download Server)

RADIUS

Remote Authentication Dial-In User Service

RAT

Radio Access Technology

RBI

Receiver Based Insertion 

RCDL

RDK Code Download

RCS

Regional Control System

RDK

Reference Design Kit

RDK Central

The publicly available website for RDK

RDK Shell

Window manager

RDK Wiki

A wiki for RDK developers to access RDK related information, support, forums and content.

RDM 

Remotely downloadable module

Resident App

The "main" app that RDK runs on launch. Handles initialization flows, acts as an app manager, and provides system-wide UIs such as settings, etc.

REST

Representational State Transfer

RF4CE

Radio Frequency for Consumer Electronics

RFC

Remote Feature Control

RG-FWA

Residential Gateway-Fixed Wireless Access

Rialto

video player

RIB

Routing Information Base

RIP

Routing Information Protocol

RMF

RDK Media Framework

RMF Media Streamer

Component of RMF

RMNET

Remote Network Driver Interface Specification

RMS

Reboot Management System

RNE

RDK Native Environment SDK (RNE) is intended to provide a development environment for applications targeted to run in RDK environment

Router

Routes data between the modem’s outside connection (WAN), within the home (LAN)

RPC

Remote Procedure call

RPD

Routing protocol process

rpi

Raspberry Pi. Commercial off the shelf - Open-source, Linux-based single board micro-computer with a low price point

RR    

Radio Resource

RSRP

Reference Signal Received Power

RSRQ 

Reference Signal Received Quality

RSSI

Relative Signal Strength Indicator

RTCP

Real Time Control Protocol

RTE

Real Time Encoding

RTP

The Real-time Transport Protocol (RTP) defines a standardized packet format for delivering audio and video over the Internet. RTP is used extensively in communication and entertainment systems that involve streaming media, such as telephony, video teleconference applications and web-based push to talk features. For these it carries media streams controlled by H.323, MGCP, Megaco, SCCP, or Session Initiation Protocol (SIP) signaling protocols, making it one of the technical foundations of the Voice over IP industry.RTP is usually used in conjunction with the RTP Control Protocol (RTCP). While RTP carries the media streams (e.g., audio and video) or out-of-band signaling (DTMF), RTCP is used to monitor transmission statistics and quality of service (QoS) information. When both protocols are used in conjunction, RTP is usually originated and received on even port numbers, whereas RTCP uses the next higher odd port number. 

RTSP

Real Time Streaming Protocol (RTSP) is a network control protocol for use in entertainment and communications systems to control streaming media servers. The protocol is used to establish and control media sessions between end points. Clients of media servers issue VCR-like commands, such as play and pause, to facilitate real-time control of playback of media files from the server. 

RUI

Remote User Interface

SAM

Service Activation Model

SAP

Secondary Audio Programming 

SAS

Service Activation System

SAT

Site Acceptance Test

SAX

Simple API for XML

SB

Southbound

SCM

Set-top Configuration Manager

SCTE

Society of Cable Telecommunications Engineers

SCTE 35

ad replacement standard for linear and ABR formats

SDK

Software Development Kit

SDS

Software Design Specification

SDTV

Standard Definition Television

SDV

Switched Digital Video

SEM

 SmartStream Encryptor Modulator 

SFP 

Stream Flight Planner

SG

Service Group

SGW

Serving Gateway

Shaka

popular web based media player – used for A-B tests with AAMP

SHO

Super Hub Office

SI

System Information

SIK

Self Install Kit

SIP

Session Initiation Protocol

SLA

Service Level Agreements

SLE

Single live event. Streaming of a live event like football game, which can later become VOD

SM

Service Manager

SMA

SubMiniature version A

SMB 

Small To Medium-Sized Businesses

SNMP

Simple Network Management Protocol is an Internet-standard protocol for managing devices on IP networks.

SNR

Signal Noise Ratio

SOA

Start Of Authority - a type of record in a DNS

SOAP

Simple Object Access Protocol

SoC

System On Chip - Embedded Hardware providing the basis for OEMs to build devices – RDK-V, B and C

SPP

Serial Port Profile

SPTS

Single Program Transport Stream

SRM

Session and Resource Manager

SSH

Secure Shell - a UNIX-like command shell that uses SSL to encrypt all the network traffic for secure access to a command line on a remote server.

SSID

Service Set Identifier

SSL

Secure Sockets Layer - A common technology used to encrypt network traffic for tramsission over TCP/IP networks.

SSP

Synchronous Serial Port

Stable Release

As RDK develops, quarterly releases will branch. Each release branch will be designated into release candidates. 

STB

Set-Top Box

STC 

System Time Clock

Storm

Automated testing framework for WPE devices

STP

Spanning Tree Protocol

STT

System Time Table

STUN

Session Traversal Utilities through Network Address Translators (NATs)

Subtec

subtitles rendering app

SVC

Sub-Band Coding

S-VCT

Short-form Virtual Channel Table

SVN

The Subversion (Source Code Repository) - see git

SVP

Secure Video Path

TAD

Test And Diagnostic

TCP/UDP

Transmission Control Protocol/ User Datagram Protocol

TCs

Test Cases

TDK

One Test Engine to test all flavors of RDK. Component testing and Interface testing of RDK Modules, Integration testing of generic RDK scenarios.

TDM

Test And Diagnostic Manager/Time Division Multiplexing

TFTP

Trivial File Transfer Protocol

Thor

Comprehensive Flex JS experience layer, includes Lightning, Hammer, and other APIs

Thunder

Native C application framework from WPE, with a native plugin model for customization

Thunder Plugins

A collection of bundled plugins that come with WPE

Thunder.js

JavaScript API façade to the native Thunder APIs

Title VI

Title Six calls for Closed Captioning of Public Service announcements.  This is typically a transcription of the audio portion of a program.

TKIP

Temporal Key Integrity Protocol

TLS

Transport Layer Security

TOS

Type of Service

TR-069

Defines an application layer protocol for remote management of end-user devices (or) A protocol messaging system for communication between cloud server and client devices

TR-181

Device data model used by protocols such as TR-069 and WebPA to communicate telemetry

Trick Play

Trick Play or Trick Mode refers to standard user playback actions coming from a viewer's remote control. Fast-forward (FF), REwind (RW), Pause, etc. 

Tru2Way

Interactive digital cable services delivered over the cable video network.  Tru2way is sometimes called OCAP.

TSB

time shift buffer

TTL

Time-to-live

TTML

Timed Text Markup Language

TTS

Text to Speech

TTS

TransportStream Time Stamp

UART

Universal asynchronous receiver-transmitter

UICC

Universal Integrated Circuit Card

UIM

Universal Integrated Circuit Card [UICC] Interface Module 

UIM  

User Identity Module

UMTS

Universal Mobile Telecommunications System

UNI

User Network Interface

UPnP

Universal Plug and Play.  This is a network protocol for broadcasting and discovering services on the network.  It allows devices to find services or ro announce that they are providing services.

URI

Uniform Resource Identifier - a compact string of characters for identifying an abstract or physical resource.

USG

UniFi Security Gateway

UTC

Coordinated Universal Time, Unified Transaction Completion

UTF

Unicode Transformation Format

UVE

Unified Video Engine

UX

User Experience

VBN

 Virtual Beta Network

VBR 

Variable Bit Rate

VCN

Virtual Channel Number

vCPE

Virtual CPE

VEip 

Virtual Ethernet interface point

VHO

Video Hub Office

Video Accelerator

Platform(s) to rapidly develop, test and Delivery with RDK

VLAN

Virtual Local Area Network

VOD

Video on demand. (VOD content) (IVOD) Instant video on demand

Voice-search and navigation

Voice-based interface for interacting with compatible STBs

VoIP

Voice Over Internet Protocol

VoLTE

Voice over LTE(Long Term Evolution)

VPC

Video Path Control

VPOP

View Primary Output Port

VQM

Video Quality Monitoring 

VSS

Video System Services 

w3c

W3C Consortium - An organization formed to develop common protocols to ensure interoperability and promote the World Wide Web. (Source: Unisoft) 

Wayland

Specification protocol used by the compositor

WDS

Wireless Distribution System

WebDAV

Web-based Distributed Authoring and Versioning

WebPA

Web-based Protocol Agent

WebRTC 

Web Real-Time Communication 

WebVTT

Web Video Text Tracks Format

WECB

Wireless Ethernet Coax Bridge

WEP

Wired Equivalent Privacy

Westeros

Compositor based on Wayland

Westeros/Essos/Wayland

Graphics UI framework used in RDK

Weston

Compositor based on Wayland

WHiX

Wifi Happiness Index

Widevine

Widevine, as an opensource DRM solution, provides cost savings over Adobe DRM. Used with DASH.

WLAN

Wireless LAN

WMM

Wi-Fi Multimedia

WPA

Wi-Fi Protected Access

WPE

Web Platform for Embedded: Lightning, Thunder, WebKit Browser, Gstreamer, and Thunder Plugins

WPS

WiFi Protected Setup

WRP

Web Routing Protocol

WSS

Web Socket secure

WWAN  

Wireless Wide Area Network

X11

X Windowing System

XConf

X1 Configuration Manager

XMPP

Extensible Messaging and Presence Protocol

YAJI

Yet Another JSON Iterator - an Open Source JSON parser used in the RDK Stack.