Qihan independent R&D NVR provides two-way voice intercom function, which can carry out broadcast propaganda to the front end. It can ensure the effect of the voice intercom with echo elimination technology， combine the voice broadcast system with the video monitor system to save your investment costs further.

Through abnormal monitoring and the motion detecting of the camera, external triggering alarm signal, Qihan independent R&D NVR system can provide powerful alarm linkage, including starting video alarm, switching the front image, email, voice alarm, etc., which can help you more efficiently and accurately manage and utilize the monitoring service.

Qihan NVR through a variety of self-developed security policies ensure that the entire system is safe and reliable operation. NVR and IP are used front-end embedded design ensures that the system will not be viruses and hackers. AES bit stream encryption technology can effectively prevent the monitor stream to be stolen. Reliable user authentication and authorization policies can prevent unauthorized users from logging.

Since using fully networked architecture, all IP surveillance devices in Qihan independently developed NVR system, including NVR, network cameras, IP storage, PC client interface, etc., can be flexibly installed anywhere in the network, with rapid access, and not subject to geographical restrictions.The networking of all IP monitoring equipments, gives Qihan independently developed NVR system a very flexible extensible features, including the number of front-end cameras, video capability, storage capacity, the number of remote clients, all can be flexibly extended. And the expanded system has no effect on the use of the business function and management.

Only a network cable needed in the network center: While, for the traditional DVR and analog control system, the management center needs a lot of cable for the access of each monitoring signal. Cabling costs are high, and maintenance is difficult. But, Qihan independently developed NVR just requires a network cable in the center for the access of all monitoring signals. It lowers down the cabling cost, and the installation and maintenance is much more simple and convenient. Only a network cable needed for the monitoring point: The front end of the Qihan independently developed NVR system is pure IP cameras, so it only needs a network cable to transmit video, audio, control signal, and various types of alarm signals simultaneously. Compared with the previous DVR monitoring points, NVR monitoring points can save a lot of wiring costs, with more convenient installation and easier maintenance. Wireless transmission, without wiring: For inconvenient wiring monitoring points, the traditional analog surveillance systems are often difficult to deploy. While, for Qihan independently developed NVR system, through installing wireless IP cameras at the front end, you can easily wireless transmission the monitoring images, do not need wiring.

Unlike traditional analog DVR and surveillance systems, Qihan proprietary NVR can be a simple -to-use graphical interface for all resources within the system to achieve comprehensive management and maintenance. Through the network management capabilities, you can quickly achieve full network optimization, to keep the system operating conditions, to understand the current system performance, event logging system records all the information for later query. You can through the management client software on all front-end system to set the parameters, query, delete, modify, and to achieve device software online upgrade. You to manage client software can be set up user accounts, set the user's permission levels, different levels of users with different operational and administrative privileges.

By deploying IP front-end equipment which support dual-flow function, Qihan independent R&D NVR can automatically call for video flows of different quality according to different demand, which contributes to optimize the network bandwidth resources. While browsing, NVR can automatically switch from the high/low resolution flows according to the browse style ,calls for high resolution code flow when browsing single picture ,and high resolution code flow when browsing multiple pictures, remote client-end can also monitor multiple pictures under low bandwidth.When recording,the NVR record high resolution code flow all the time to ensure the quality of the video.

the need for centralized via video wall display multiple front-end image of the monitoring center can deploy single or multiple TV wall decoder decodes high quality output. TV wall screen can be realized patrol, alarm linkage function.

PC client on the NVR via remote operation, as long as network connectivity, PC clients are not subject to time and place for any monitoring resources for remote viewing and playback. Supports B / S and C / S mode both clients

Whether it is using the remote control, mouse operation locally or remotely using the PC client operations can be realized through the network front of the camera PTZ control. Use the mouse to operate directly on the screen in the video , PTZ control can be achieved , with Qihan network dome center and also the realization hits marquee zoom function .

NVR through an external display device can display monitor images and direct local management interface via remote control, mouse operation locally on the NVR.

whether it is local or remote browse view, can support flexible multi-screen display function, support a variety of multi-screen style.

in a variety Browse mode, can be made to one or more of the monitor screen for front-end automatic polling, polling interval can be set. You can configure multiple sets of plans to carry out plans patrol.

For some commonly used functions, such as full-screen, PTZ control, image capture, video playback, video start and stop, switching the screen, alarm queries, etc., can be a button on the main interface operation.

Users can start or stop recording of any front-end monitoring equipment at any time, via remote control, mouse or keyboard, real-time snapshot for the viewing video.

Under timer recording mode, authorized users can set start and stop time for recording at any one or a group of front-end monitoring cameras. It can be set multiple times a day, and supports record on holidays.

When an alarm is triggered, NVR can automatically activate the recording of the corresponding front-end camera, video length can be pre-set. NVR also has an alarm pre-record function, pre-recording time can be set to ensure complete video recording for the alarm for easily tracing.

You can set the length of time for video reservation. Outdated video will be automatically overwritten. Important alarm recording video can be set not to be overwritten.

NVR is installed in the network center. Just a network cable can complete the access of all monitoring points. It is low cabling cost, fast construction, simple installation and easy maintenance. The monitoring front-end accesses NVR through the IP network. So, only use the users’ existing IP network for system building. And monitoring points can be located anywhere on the network, without geographical restrictions.

NVR has excellent network adaptability. When there is no fixed public IP, NVR can be accessed via DDNS. And with Qihan free DDNS, users can freely use, and reach low-cost Internet network deployment.

Qihan independently developed NVR system provides NVR central storage, external storage devices for storage. All storage resources are available for unified management by the NVR. In order to achieve mass storage, NVR supports high-capacity SATA hard disk, eSATA, USB disk expansion for storage.

Qihan NVR can access the monitoring and management platform, in a multi- stage cascade surveillance network system that combines DVR, IPC, HDSDI DVR storage capabilities, to accept the overall management of monitoring and management platform. In addition, NVR provide complete API interface for third-party manufacturers of monitoring and management platform access, enabling browsing, video, alarms, and all other management functions .

As integrated network monitoring center, Qihan independently developed NVR has features of very simple and quick installation and configuration. It can be plug and play under the same LAN:

1, access network cable, turn on the power.

2, Search all front-end IP equipments.

3, Local multi-screen displays all front-end equipments automatically. And how to fast install and configure under other complex network conditions, please see NVR user manual.

As to all the video resource stored in the NVR system, you can flexibly，quickly and precisely retrieve and playback anytime and anywhere. Graphical timeline mode is utilized in Video retrieval and playback. You can choose the start time and finish time in the timeline for video playback, also you can search the specific time period for playback. Playback process support various control functions such as stop, suspending, resume, fast and slow play, drag positioning and single frame play. You can choose multichannel video playback at the same time, and set the starting time at the same point, facilitating to grasp the whole panoramic process of the incident.