Abbreviations used in CCTV and Network industry.

This article is for CCTV professionals and knowledge seekers; here we are covering all the acronyms of the CCTV field with a short definition. It also helps to crack the technical interview for the installer, technical support and CCTV operator job.

DVR:

DVR is part of a closed-circuit system. It stands for Digital Video Recorder, which is a device that records video in a digital format from the camera to a hard disk drive or any external storage.

NVR:

NVR stands for Network Video Recorder is a specialized system that includes a software program to record video in a digital format. An NVR is typically an IP-based video surveillance system.

RG-59:

RG-59 stands for Radio Guide-59 it is a type of coaxial cable used for Analog cameras and for television signals.

RG-6:

Radio Guide-6 is a coaxial cable used for CCTV cameras and television signals. It can carry a signal larger distances than Rg-59.

BNC:

BNC stands for Bayonet Neill-Concelman, It is used as a connector on both ends of the coaxial cable.

RJ-45:

RJ stands for Radio jack generally used to connect Ethernet devices like IP cameras, computer internet, printers etc.

HDD:

Stands for Hard Disk Drive; is a storage device used for storing video and audio coming through video cameras.

NTSC:

Stands for National Television System Committee, It is the Analog color television standard. NTSC standards are used by countries like America, Japan, Taiwan Brazil etc.

PAL:

Stands for Phase Alternating Line is also an Analog colour television standard. PAL standards are used by countries like Europe, Asia Pacific, India and Argentina etc.

MEGAPIXEL:

This means 1 Million pixels; are the resolution measuring tool of the video cameras.

POE:

Stands for Power Over Ethernet to allow pass electric power and also along with data on a single twisted pair Ethernet cable.

POC:

Stands for Power Over Coaxial is the new technology that allows data and Power on a single coaxial cable. There are some DVRs or devices that support this.

PTZ:

Stands for Pan-tilt Zoom cameras have the ability to change direction and zoom control. It is widely used in video surveillance, video conferencing and distance learning.

RCA:

RCA is an audio-video connector that usually carries the audio and video signal. It is developed by Radio Corporation of America. This connector is also known as a Phono connector.

HTTP:

Hypertext transfer protocol is a set of rules and techniques for transferring files, text, images and other multimedia files through the web. It is an application layer protocol.

RTSP:

Stands for Real-Time Streaming Protocol is used to set real-time media streams.
TCP and UDP ports used 554 RTSP traffic.

UPnP:

Stands for Universal Plug and Play is a networking protocol that allows the router to forward a specific port of the camera for remote views.

H.265:

H.265 also known as High-Efficiency Video Coding (HEVC) is a video compression standard designed for high-resolution video.
It supports 8K and Ultra High Definition resolution.

IP:

This stands for Internet Protocol, it is a set of rules that allow how the data is sent from one system to another system. It comes under the Network Layer.

IPv4:

Internet Protocol version 4 has a 32-bit IP addressing system. It is divided into 4 sections. Example - 192.168.1.1
IPv4 support 4294967296 addresses.

IPv6:

Internet Protocol version 6 uses a 128-bit IP addressing system. Ipv6 comes with 8 groups separated by a column.
Example: 2008:ABCF:ZC12:1265:0000:0000:0JK4:8844
IPv6 supports 340,282,366,920,938,463,463,374,607,431,768,211,456 addresses.

FPS:

Frame per second, In CCTV 30fps means the camera records 30 frames in one second of video.

VCA:

Stands for Video Content Analysis; VCA refers to the ability of the camera to analyze and determine a specific activity or event and assist the operator and security personnel.
After VCA came into existence CCTV industry experienced a boom in growth.

DDNS:

DDNS acronym stands for Dynamic Domain Name System is a method of automatically updating a name server in the domain name system.

ONVIF:

An acronym that stands for Open Network Video Interface Forum, ONVIF created a standard for how IP products and video surveillance communicate with each other. Onvif is an organization created in 2008 by Axis Communication, Sony and Bosh Communication.

NAT:

Network address translation is a technique to change the IP address or network address of the source and destination with the help of a router, internet and public network. NAT operates in the router generally connecting two networks together and converting private addresses to local addresses.

TCP:

Stands for Transmission Control Protocol is a communication protocol that sends data in bytes. TCP is a reliable stream delivery technique that guarantees all bytes are same order and similar to those sent.

UDP:

User Datagram Protocol is a communication protocol that is generally used for time-sensitive information such as video streaming and Voice Over IP.

FTP:

This stands for File transfer protocol, FTP allows transferring, copying, deleting, and accessing files over the internet through connected IP addresses.

PPPoE:

This stands for Point-to-Point Protocol over Ethernet is a network protocol used to manage communication between network endpoints.

HDMI:

This stands for High Definition Multimedia Interface; HDMI is the replacement for Analog video standards. It is an audio/video interface for transmitting compressed or uncompressed audio or video from HDMI sources.

DHCP:

Stands for dynamic host configuration protocol have the ability to maintain the network and assign automatic IP addresses and another connecting parameter to the client-server architecture.
All modern DVRs/NVRs have DHCP and Static IP management.

UTP:

Stands for Unshielded-Twisted-Pair Cable is a type of cable made of copper generally used in telephone and local area networks.

SATA:

SATA stands for Serial Advanced Technology Attachment is a data transport and command protocol that defines how to communicate with DVRs/NVR and mass storage devices.

HD-CVI:

HD-CVI stands for High-Definition Composite Video Interface, This technology allow Analog camera to transmit high-quality video signal over coaxial cable.

Before this technology, CCTV cameras just transmitted 960*480 pixel resolution over coax.

DMSS:

DMSS stands for Dahua Mobile Security Surveillance is an app for remote monitoring of Dahua devices like DVR/NVR and IP cameras.
App supports live monitoring, playback, receiving notification and controlling the PTZ cameras.

ANPR:

Stands for Automatic Number Plate Recognition.
ANPR is a technology that allows CCTV cameras to read the vehicle number plate and store it on their respective NVR without human intervention.

EXIR:

Exir stands for EXtended InfraRed, technology that improves the CCTV camera visual at night.