huawei ipc6000 series hd network cameras technical white paper ipc6000... · huawei ipc6000 series...

Huawei IPC6000 Series HD Network Cameras

Technical White Paper

Version： August 2014

Release Date： 2014/08/28

HUAWEI TECHNOLOGIES CO., LTD.

Huawei Proprietary and Confidential

Copyright © Huawei Technologies Co., Ltd.

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Copyright © Huawei Technologies Co., Ltd. 2013. All rights reserved.

No part of this document may be reproduced or transmitted in any form or by any means without prior written

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and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.

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Notice

The purchased products, services and features are stipulated by the contract made between Huawei and the customer.

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the usage scope. Unless otherwise specified in the contract, all statements, information, and recommendations in this

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implied.

The information in this document is subject to change without notice. Every effort has been made in the preparation

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Huawei Technologies Co., Ltd.

Address: Huawei Industrial Base

Bantian, Longgang

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Website: http://enterprise.huawei.com

http://enterprise.huawei.com/

Huawei IPC6000 Series HD Network Cameras Technical White Paper Contents



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Contents

1 Overview .......................................................................................................................................... 1

1.1 Product Overview ......................................................................................................................................................... 1

1.2 IPC Structure ................................................................................................................................................................ 1

2 Related Technology ......................................................................................................................... 4

2.1 Reliability ..................................................................................................................................................................... 4

2.1.1 Video Buffering Technology ...................................................................................................................................... 4

2.1.2 Digital Watermark and Media Security Technologies ................................................................................................ 5

2.1.3 FEC Technology ........................................................................................................................................................ 5

2.1.4 IP Address Filtering ................................................................................................................................................... 6

2.1.5 IEEE802.1x-based Network Access .......................................................................................................................... 6

2.2 Easy-to-Use Design ...................................................................................................................................................... 6

2.2.1 Open Design .............................................................................................................................................................. 6

2.2.2 Adaptive Rapid Deployment Technology .................................................................................................................. 7

2.2.3 Multiple Power Supplies ............................................................................................................................................ 7

2.2.4 Low Power Consumption .......................................................................................................................................... 7

2.2.5 Automatic Fault Inspection and Alarm Technology ................................................................................................... 8

2.2.6 Remote Zoom and Focus Control .............................................................................................................................. 8

2.2.7 3D Locating Technology (only for High-Speed PTZ IPCs)....................................................................................... 8

2.2.8 Preconfigured Stream Packages for Typical Scenarios .............................................................................................. 8

2.2.9 Preconfigured ISP Packages for Typical Scenarios ................................................................................................... 9

2.3 Innovative Design ......................................................................................................................................................... 9

2.3.1 PU Intelligent Analysis Technology .......................................................................................................................... 9

2.3.2 ROI Encoding Technology ...................................................................................................................................... 10

2.3.3 60-Frame High-Frame-Rate Encoding Technology ................................................................................................. 10

2.3.4 Bit Rate Stream Smoothing Technology .................................................................................................................. 10

2.3.5 Self-adaptive Bandwidth Technology ...................................................................................................................... 10

2.3.6 ePTZ Technology ..................................................................................................................................................... 11

2.3.7 Corridor Model ........................................................................................................................................................ 11

2.3.8 SmartIR Intelligent Infrared Technology ................................................................................................................. 11

A Acronyms and Abbreviations ...................................................................................................... 12

Huawei IPC6000 Series HD Network Cameras Technical White Paper 1 Overview



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1 Overview

1.1 Product Overview

With cutting-edge audio and video technologies and accumulated practice in video

surveillance system integration, based on the technical features of network cameras in security

industry, Huawei has released IPC6000 series HD network cameras (IPCs), which are part of

the core product series of Huawei video surveillance solution.

As serial video surveillance products which can cover both indoor and outdoor scenarios,

Huawei IPC6000 series cameras, based on embedded Linux operating system, integrate some

functional modules such as video compression, network transmission, intelligent algorithm,

alarm processing, and built-in web communication.

Huawei IPC6000 series cameras not only offer all the basic surveillance functions such as

viewing live videos through networks (LAN, Internet, or wireless network) and pan-tilt-zoom

(PTZ) controlling, but also provide other functions such as intelligent analysis, voice intercom,

alarm input, relay output, motion detection, analog video output, small form-factor pluggable

(SFP) port transmission, and secure digital memory card (SD card)-based local video storage.

A large-scale and distributed intelligent video surveillance (IVS) system can be established

together with Huawei IPC6000 series cameras and a network video storage system and a

management platform.

1.2 IPC Structure

Figure 1-1 IPC structure

As shown in Figure 1-1, IPC is a device that integrates the following parts:




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Lens

Infrared cut-off filter (ICR)

Image sensor

Digital image encoder

Compression algorithm module

Central processing unit (CPU)

Network unit

Local storage unit

The working process of an IPC is as follows:

1. The photographic fields (i.e. the monitored objects) are imaged by the image sensor

through the lens.

2. The encoder compresses code streams of images according to a specified compression

format such as H.264 format.

3. The CPU transmits the compressed code streams and instruction data to the surveillance

center through the network unit.

4. The surveillance center implements video surveillance functions such as live video

viewing, video storage, and video playback, as shown in Figure 1-2.

Figure 1-2 Video surveillance functions

Huawei IPC6000 series cameras integrate the following functions:

Intelligent analysis

Real-time encoding and transmission

Network control

Storage and policy management

Alarm management

SFP transmission

Support mainstream communication protocols such as Open Network Video Interface

Forum (ONVIF) and China Mobile Clairvoyance

With embedded operating systems, Huawei IPC6000 series cameras can work without

computer assistance. Both in new and renovation surveillance projects, the flexibility of

deployment and the capability of interconnection are greatly improved by this high integration.




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In addition, with the support for remote maintenance and fault alarm reporting, the reliability

of the entire video surveillance system is raised and the deployment and operation costs are

effectively reduced.

Huawei IPC6000 Series HD Network Cameras Technical White Paper 2 Related Technology



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2 Related Technology

Huawei IPCs don’t feature all the following product technologies and characteristics. The

product documentation released through website should be taken as the standard

documentation, which describes all the previous technologies and characteristics that can be

provided by the specific products.

2.1 Reliability

Taking full account of diverse complicated application environments, Huawei IPC6000 series

cameras adopt a series of technologies complying with international standards to improve the

reliability, ensuring proper running even in harsh environments.

Device technique: Through material selection and appearance design, IPC6000 series

cameras offer the features such as heat dissipation, mildew resistance, salt mist

prevention, moisture-proof and shockproof protection. In this way, as an

environment-friendly product, it can bed adaptable to different environments.

Hardware: Solutions such as lightening protection, electromagnetic compatibility (EMC)

protection system, thermal and power supply design, which all comply with relevant

international standards, maximally enhance the reliability and effectively reduce possible

faults, avoiding complicated maintenance.

Network transmission: The video buffering technology helps avoid video loss in case of

network outage.

Data storage: The technologies of video buffering and digital watermark ensure the

storage security of video surveillance data.

System design: Modular design ensures reliable performance.

2.1.1 Video Buffering Technology

As video data and instruction signals are transmitted over network, the network reliability

becomes a critical factor when considering the reliability of the entire video surveillance

system. However, unexpected and temporary network interruptions or exceptions are

inevitable. A well-developed video surveillance solution must take account of this situation

and ensure video integrity during network interruptions.

Huawei IVS system uses the video buffering technology to store video temporarily in IPCs’

cache memories or in a built-in SD card when a network exception occurs so that video data




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shall not be lost in case of network outage. When the network connection is restored, the IVS

platform automatically detects the reconnection and searches for the time information for the

missing video according to the pre-specified recording policy and sends a video download

request to the IPC and then downloads the missing video to ensure integrity and continuity of

the video. After this, the IPC deletes the local video data stored in the SD card.

The video buffering function can be implemented only when the IPC supports this function and SD card

storage and needs the platform’s cooperation.

2.1.2 Digital Watermark and Media Security Technologies

With the popularity of international standard video codec algorithms and the constant updates

of video and audio processing technologies, video editing applications have become rather

mature, which promote the reverse encoding and video tampering threats. Therefore, the

integrity of video data and the security of data transmission must be considered and ensured

by a mature video surveillance solution. Taking account of this industry demands, Huawei

integrates the digital watermark technology and media security encryption technology into

IPCs to effectively prevent video and audio files from being tampered and repudiated,

ensuring the integrity, authenticity, and security of media data.

Digital watermark technology

The IPC outputs code streams through the video encoder together with the stream

frame's watermark information including the number of current frame bytes, time, Media

Access Control (MAC) address, and serial number of the device. As protection

information, the watermark, which is customizable, is placed in the code stream data

packet and transmitted or stored along with the compressed media stream.

The media playing side decodes the code stream data packet and compares the obtained

watermark information with the original watermark information. In this way, the security

and integrity of the media stream are checked. If the media stream is invalid, the system

generates an alarm.

Media security technology

The IVS platform generates and sends the initial encryption information to the IPC. Then

the IPC calculates the final encryption key according to the negotiated encryption rules;

uses it to encrypt video; and sends the encrypted video to the IVS platform, which then

decrypts the video.

2.1.3 FEC Technology

If the packet loss rate is high due to network exceptions and unstable communication during

the video data transmission, the data packets received by the platform will be incomplete and

cannot be decoded and played properly, which may lead to problems such as blurred screen

and image freezing.

Huawei IPC6000 series cameras support the forward error correction (FEC) technology,

which adds the redundancy correction code to the video data to be sent, and the platform

detects errors in the received data according to the redundancy correction code. If an error is

detected, the platform uses the FEC restoration algorithm to restore the lost packets. In this

way, Huawei IPC6000 series cameras can provide proper video images when the packet loss

rate does not exceed 5%.

To implement the FEC technology, the IPC and platform must support media transmission in the FEC

mode.




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2.1.4 IP Address Filtering

IP network cameras may been illegally accessed, and the video data is illegally accessed by

unauthorized persons. considering the requirements of data security and information

regulation, it is necessary to forbid the IP data packets from some IP addresses, ports or

transmission protocols from accessing network cameras to ensure data security.

Huawei network cameras offer flexible configuration of IP address filtering rules which can

stop those packets from some unwanted IP addresses, ports and protocols, serving as network

firewall.

1) Users can configure a blacklist to deny the access of the blacklisted data packets.

2) Users can configure a whitelist to allow only the access of the whitelisted data packets.

3) Users can add, query, modify, or delete IP address filtering rules in a blacklist or whitelist.

2.1.5 IEEE802.1x-based Network Access

If there is no access authentication for a network video surveillance system, it will be

vulnerable to be illegally connected by unauthorized users to get video data and also be likely

to be illegally accessed by unauthorized devices which can be used by criminals to attack the

surveillance network and result in information leakage and system crash.

Huawei's IVS system supports the IEEE802.1x-based access authentication mechanism,

Huawei IP cameras support MD5 challenge (username and password) and act as requestor and

necessary information can be configured on Web clients for authentication. The employment

of 802.1x certification can effectively prevent malicious intrusion in access layer and provide

security guarantees for the access authentication of surveillance systems and stop the

attacking from unauthorized users and devices.

2.2 Easy-to-Use Design

2.2.1 Open Design

In the video surveillance industry, the integration or interconnection mode is adopted to

control and invoke IPCs, aiming at communication and sharing of PU resources between

systems. Therefore, as the basis of platform interconnection, multiple interface protocols must

be provided to adapt to different system environments. Huawei IPC6000 series cameras

provide multiple standard protocols for connecting to not only Huawei IVS platform but also

third-party platforms, showing high openness and compatibility.

Software development kit (SDK)

Huawei IPC6000 series cameras provide SDKs for both Windows and Linux operating

systems. The SDK provides a user-friendly secondary development interface for any

open platform, which not only complies with users' operation habits, but also achieves

seamless access of IPCs, effectively enhancing the openness and compatibility of

Huawei IPC. The SDKs of Huawei IPC6000 series cameras support the following

functions:

− Parameter configuration

− User login (including registration and heartbeat keep alive)

− PTZ control

− Live video viewing (including audio and video streams)




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− Voice intercom

− Alarm reporting

ONVIF protocol

Huawei IPC6000 series cameras support ONVIF 2.1 and ONVIF profile S protocols,

ensuring the interoperability between devices from different manufacturers and

minimizing customers' investments. Through ONVIF protocol, Huawei IPC6000 series

cameras can support the following functions:

− Device management

− Device discovery

− Image configuration

− Device input and output service

− Media configuration

− PTZ control

− Real-time streaming media and event processing

2.2.2 Adaptive Rapid Deployment Technology

The expanding scale of video surveillance systems increases the costs for configuring,

deploying, commissioning, and maintaining IPCs.

When deploying IPCs, users need to configure both IPC network parameters and the relevant

platform parameters and give consideration to the corresponding relation between IPCs and

platforms, which requires the setter having a good knowledge of network and surveillance

expertise. However, most users are not so skillful at this professional field.

Huawei IVS solution uses the adaptive rapid deployment technology, uniformly deploying the

Dynamic Host Configuration Protocol (DHCP) servers from the platform, achieving

automatic registration for IPCs. This plug-and-play technology makes IPC deployment more

cost-effective and efficient.

2.2.3 Multiple Power Supplies

Box cameras usually require DC12V, and PTZ cameras usually require AC24V. However, at

some sites, the mains power supply is unavailable, and only offer AC24V or DC24V, or even

solar power is demanded. In this situation, power supply will be a problem if cameras with

different power supply specifications are used together.

Huawei IPC6000 series cameras support multiple power supply specifications. Box IPCs

support DC12V, DC24V, AC24V, and power over Ethernet (PoE) , and PTZ IPCs support

DC24V, AC24V, and PoE non-standard (–56 V to –57 V). When the mains power supply is

unavailable, a unified power supply can be specified (for example, DC24V or AC24V) based

on the site requirements. If the solar power supply is used, the voltage output requirement is

low, which enhances the adaptability and cost-effectiveness of the solar power solution.

In addition, Huawei IPC6000 series cameras support self-adaptive DC power supply that

automatically regulates power input for stability, avoiding device damage resulted from

incorrect polarity.

2.2.4 Low Power Consumption

Low power consumption not only can reduce heat generated by electronic devices and

improve their service life but also can greatly save energy and reduce O&M cost.




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Huawei network box cameras employ technologies such as lowering IC power consumption,

improving energy conversion efficiency and heat dissipation to support ultra-low-power

consumption of 2.5W for each whole set and 4W as the maximum power consumption (just

when IR-CUT switches). In regions without stable electricity supply where UPS or solar

power is used, it can greatly reduce the requirements to solar and UPS power systems.

2.2.5 Automatic Fault Inspection and Alarm Technology

As it is unlikely to detect potential faults through daily maintenance, an IPC may break down

during the service running period. In this case, the maintenance personnel must be sent for

fault detection and locating, which will take much time and energy, increasing the operation

and maintenance costs. Therefore, the function to quickly and accurately locate faulty IPCs is

indispensable to the daily maintenance job of large-scale video surveillance systems. As the

core part of peripheral devices, Huawei IPC6000 series cameras support automatic fault

inspection and alarm reporting, which detects device exceptions (for example, temperature

exception or read and write exception of SD card) in real time. This technology makes the

daily maintenance efficient and cost-effective.

2.2.6 Remote Zoom and Focus Control

Zoom and focus support both manual and electric adjustment. When the manual adjustment is

used, users revolve the zoom ring to flexibly set the angle of view. However, users may find it

inconvenient to manually adjust the focus when the camera is already fixed to a place.

Huawei IPC6000 series box cameras (IPC6121-I, IPC6111-I) support remote zoom and focus

control through the zoom/focus dual ports as well as the auto Iris and electric zoom lens. And

through web pages or a CU, users can perform remote zooming and focusing, which

simplifies the installation and commissioning, facilitates users' operations, decreases

investments, and improves the flexibility.

2.2.7 3D Locating Technology (only for High-Speed PTZ IPCs)

As the application area of video surveillance expands, not only the demands to video

resolution become higher, but also the demands to the remote and fast control increase. To

meet the industry requirements, Huawei has launched a complete set of HD video surveillance

solutions as well as the 3D locating technology to PTZ IPCs based on the original PTZ

communication control.

1. When users want to view the details of live video, they click the mouse to draw a virtual

rectangle on the image. After the system calculates its coordinates on the screen and the

percentage against the entire image, the instruction signals will be sent to the relevant

PTZ camera through Clairvoyance protocol.

2. The PTZ IPC automatically adjusts the magnification according to the instructions.

Through rotation and zooming, the selected area can be located quickly and viewed in a

full screen mode. The 3D locating technology allows users to perform PTZ operations to

view what they want in real time, which improves the monitoring efficiency.

The 3D locating function is available only when the PTZ IPC is connected to a Huawei IVS platform.

And applicable models are IPC6611-Z30-I and IPC6621-Z30-I.

2.2.8 Preconfigured Stream Packages for Typical Scenarios

All the bit stream parameters are configured with default values, which cannot fit to every

specific surveillance scenario, when network cameras are produced. It is time-consuming and




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inefficient to adjust bit stream parameters according to some specific real scene owning to the

complicated professional knowledge.

Huawei network cameras offer 4 sets of default bit stream packages for the most typical video

surveillance scenarios, which are high-quality images, bandwidth balancing, low bandwidth

and mobile device. Users can add, delete, modify, copy and query self-defined stream

parameters packages with maximum 4 sets. It just needs a minor adjustment according to the

specific scenario to deploy the cameras, which greatly improves the efficiency and reduces the

deployment workload.

Applicable models: IPC6112-P / IPC6112-D / IPC6122-P / IPC6122-D / IPC6221-VRZ /

IPC6211-VRZ / IPC6621-Z30-I/IPC6611-Z30-I.

2.2.9 Preconfigured ISP Packages for Typical Scenarios

All the parameters are set with default values when network cameras are produced, while

default parameters cannot fit to all the specific surveillance scenarios. It will be

time-consuming and inefficient to adjust ISP parameters according to some real scenarios for

there are so many parameters needs to be configured.

Huawei network cameras predefined 4 sets of image parameter configuration of typical

scenarios including indoor, outdoor, action capturing and low illumination scenarios. Users

can choose an almost similar scenario parameter set according to the specific scene and make

very little meticulous adjustment, which reduces time and workload of camera debugging.

Applicable models: IPC6112-P / IPC6112-D / IPC6122-P / IPC6122-D / IPC6221-VRZ /

IPC6211-VRZ .

2.3 Innovative Design

2.3.1 PU Intelligent Analysis Technology

With the rapid development of video surveillance in recent years, a large-scale video

surveillance system contains hundreds of or even tens of thousands of PUs, bringing huge

challenges for incident detecting through video monitoring. To solve the problem, the

automatic intelligent analysis technology can be used to analyze video automatically and

intelligently to extract and record events of interest in real time. Those events may trigger

alarms promptly or be analyzed efficiently as post-event evidences to improve the security

protection efficiency.

Huawei IPC6000 series cameras support the PU intelligent analysis function to automatically

detect key information in video. This function helps lower labor costs, improve the efficiency,

and meet the intelligent service demands of different scenarios. The PU intelligent analysis

function includes intrusion detection, loitering detection, tripwire detection, abandoned object

detection, and removed object detection.

Applicable models: IPC6121-I / IPC6111-I / IPC6611-Z30-I / IPC6621-Z30-I .




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2.3.2 ROI Encoding Technology

HD IPCs dramatically improve the image quality, but they also bring about some bandwidth

and storage issues. To resolve these issues and promote the application of HD video

surveillance, Huawei has launched the Region of Interest (ROI) encoding solution embedded

in its IPCs. This solution is developed based on the fact that a user often focuses on a

particular area in the image when watching video, so the particular area in the image has to be

very clear, whereas other parts can be less clear. The ROI encoding technology ensures

effective surveillance over an area even when the bandwidth is insufficient.

On the monitoring image, users can select one or more ROI areas and specify unique image

quality values for these areas respectively. The near-lossless compression (high code stream)

technique is used for the ROI area, while the loss compression (low code stream) is used for

the background or non-ROI area. This approach provides higher image quality and higher

compression ratio, and resolves the problems of insufficient bandwidth and storage space.

2.3.3 60-Frame High-Frame-Rate Encoding Technology

A video file is comprised of continuous images. Each image is called a frame. If a one-second

video file is composed of 25 continuous images, the frame rate is 25 fps. With the phase

alternating line (PAL) standard, a frame rate of 25 fps provides vivid display. If the frame rate

is lower than 25 fps, motions in a video file can be discontinuous and even showing some

leaping illusions. Therefore, frame rate is an important factor to be considered in a high

quality video surveillance system.

Demands for the frame rate surely vary in different industries. For example, transportation

surveillance has strict demands for frame rate for checkpoint and lane monitoring, so does

casinos. As essential devices in a surveillance system, there is no doubt that diverse customer

demands will facilitate the technology development of cameras.

By using high-frame-rate encoding technology, Huawei IPC6000 series cameras not only

support conventional HD video frame rate (25 fps or 30 fps), but also achieve 60 fps.

Compared with the 30 fps video, images in the 60 fps video are smoother in the same

scenario.

Applicable models: IPC6121-I, IPC6111-I .

2.3.4 Bit Rate Stream Smoothing Technology

In a surveillance scenario, when objects in photographic field change greatly or image scenes

change dramatically due to PTZ rotation, data packets of key frames (I-frames) encoded in the

H.264 format increase largely in size and exceed the maximum load of the network bandwidth,

which may cause network congestion and packet loss.

Depending on the bit rate stream smoothing technology, Huawei IPC6000 series cameras can

send peak video streams evenly during frame interval according to user configuration,

avoiding packet loss caused by instantaneous data increase and ensuring the stability and

reliability of video stream transmission.

2.3.5 Self-adaptive Bandwidth Technology

The network condition for video transmission fluctuates constantly within a certain range.

When other network application loads are low, bandwidth available for video stream

transmission increases, and vice versa. Considering the phenomenon, a camera using a fixed

bit rate cannot well adapt to the changes of the network bandwidth. The bit stream may




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exceed the maximum bandwidth and cause network congestion, or images are not encoded in

a high-quality way to use the available bandwidth maximally and wastes the network

resources.

By using the self-adaptive bandwidth technology, Huawei IPC6000 series cameras can

automatically adjust the video bit rate to flexibly adapt to the changes of network bandwidth.

This technology helps to achieve the best image quality and the most efficient video

transmission.

The self-adaptive bandwidth function requires the cooperation of Huawei IVS platform.

2.3.6 ePTZ Technology

Huawei IPC6000 series cameras support ePTZ technology, which allows users to perform

ePTZ operations on any interested area in the video image (for example, panning, zooming in,

and tailoring) and only send the selected area to the platform as the secondary stream. When

viewing the recorded video, users can only choose the secondary stream while other parts of

the video image of no concern will not be transmitted to the platform, which lowers the

requirements on network bandwidth and storage capacity. Users can also view a channel of

panorama image and a channel of zoomed-in image for region of interest at the same time to

achieve a global and local combined video surveillance.

2.3.7 Corridor Model

The aspect ratios of ordinary cameras are 16:9,5:4 or 4:3 and an example of 16:9 is shown

below, from which we can see the walls occupy a large area, while generally the walls have

nothing worthy to be monitored. The corridor part that is the really valuable area takes only

about 25% of the total picture, which is a waste for video compression, transmission and

storage.

For narrow vertical scenarios such as hallways, Huawei cameras support 9:16 corridor format

which can rotate the image by 90 degrees and reduce the proportion of the blank walls in the

picture and make the camera focus on the valuable area—the doorway. In this way, the

effective monitoring region can account for about 50% of the entire screen.

2.3.8 SmartIR Intelligent Infrared Technology

Ordinary infrared cameras cannot optimize the ratio of distant and near lights, which means

when the camera is in telephoto mode (long-focal-length-point), the near light can't cover the

faraway scene and the brightness of the distant light isn't enough to give satisfying

illuminance to the focused view (under-IR-exposed scenes). While when the camera is in

wide angle mode (short-focal-length-point), the near light isn't enough and the distant light

gives too much illuminance to cause the center of the image is too bright (over-IR-exposed

scenes), which is called flashlight effect, as shown below.

Huawei infrared cameras employ SmartIR intelligent infrared technology which gives a

comprehensive consideration of auto exposure and the optimum ratio of distant and near

lights according to the current camera focal length (zoom) and can maintain appropriate

illuminance and make the infrared light uniformly distributed over the whole scene when the

lens changes from a wide-angle mode to a telephoto mode. The effect is as follows:

Huawei IPC6000 Series Technical White Paper A Acronyms and Abbreviations



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A Acronyms and Abbreviations

C

CPU central processing unit

CU client unit

D

DHCP Dynamic Host Configuration Protocol

E

EMC electromagnetic compatibility

F

FEC forward error correction

I

ICR Infrared cut-off filter

IPC IP camera

IVS intelligent video surveillance

L

LAN Local area network

LTE Long Term Evolution

M

MAC Media Access Control

O

Huawei IPC6000 Series Technical White Paper A Acronyms and Abbreviations



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ONVIF Open Network Video Interface Forum

P

PAL phase alternating line

PoE power over Ethernet

PTZ pan-tilt-zoom

PU Peripheral Unit

R

ROI region of interest

RTCP Real-Time Transport Control Protocol

RTP Real-Time Transport Protocol

S

SD card secure digital memory card

SDK Software development kit

SFP small form-factor pluggable

T

TCP Transmission Control Protocol

U

UDP User Datagram Protocol

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