DCS-6620G User’s Manual

Using the DCS-6620G with an Internet Browser

Configuration > Advanced > Audio (continued)

Send audio from the active client to all the other clients:

Improve audio quality in low bandwidth environment:

Audio source:

Acoustic echo cancellation:

Bit rate:

In half duplex transmission mode, select the option to talk to the server and broadcast your voice to all the other clients.

If the Network Camera works in versatile or low network bandwidth environment, the User can check this option to improving audio quality by sacrificing some real-time synchronization.

Select source from external or built-in microphone.

If the Network Camera works in versatile or low network bandwidth environment, the User can check this option to improving audio quality by sacrificing some real-time synchronization.

There are three kinds of bit-rate for audio. 32Kbps and 24Kbps are suitable for both music and speech like audio while 8Kbps are suitable for only speech like audio.

Recommendations for setting video for the best performance:

“Best performance” means the image refresh rate should be the fastest possible and the video quality should be the best possible at the lowest network bandwidth possible. Three factors, Maximum frame rate, Fix bit rate, and Fix quality in the Video Configuration page, are related to performance.

Recording settings for real-time motion images

To achieve a real-time visual effect, the network bandwidth should be large enough to transmit 20 image frames per second (fps) or more. If you are on a broadband network over 1Mbps, you can set Fix bit Rate to 1000Kbps or 1200Kbps, or set Fix quality to achieve the maximum frames.The maximum frame rate is 25 in 50Hz system and 30 in 60Hz system. If your network bandwidth is more than 384Kbps, you can adjust Fix bit rate according to your bandwidth and set the maximum frame rate of 25 to 30.

If the images vary dramatically in your environment, you may slow down the maximum frame rate to 20 to decrease the transmitted data for better video quality. Since the human eye could not easily differentiate between 20 and 25 or 30 frames per second, the slower frame rate will not be noticed. If your network bandwidth is below 384 Kbps, you should adjust the bit rate according to your bandwidth and experiment to allow for the best frame rate that can be achieved. The faster frame rate in a slow network will blur the images. You may also try to choose 352x240/352x288 in size option for better images or 704x480/704x576 for larger image size. Because the network has burst constraints and everyone’s environment is not the same, any poor connection will impair normal performance.

D-Link Systems, Inc.

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D-Link DCS-6620G manual Recommendations for setting video for the best performance, Audio source, Bit rate
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DCS-6620G specifications

The D-Link DCS-6620G is a cutting-edge network camera designed to meet the surveillance needs of both residential and commercial users. This versatile device combines advanced features and technologies to provide comprehensive monitoring capabilities.

One of the standout features of the DCS-6620G is its pan-tilt-zoom (PTZ) functionality. This allows users to control the camera's movement remotely, providing the ability to cover a wide area without needing multiple cameras. With a 20x optical zoom lens, it ensures high-quality images can be captured from a significant distance, making it ideal for monitoring large spaces such as parking lots, warehouses, or building entrances.

The DCS-6620G is equipped with a high-resolution image sensor that captures clear, detailed video, offering resolutions up to 640x480 pixels at 30 frames per second. The camera supports a variety of video compression formats, including MJPEG and MPEG4, ensuring efficient storage and bandwidth usage. This adaptability allows the camera to fit seamlessly into various monitoring systems and requirements.

Nighttime surveillance is made possible with the device's built-in infrared (IR) LEDs, enabling visibility even in complete darkness. This feature is crucial for 24/7 security monitoring, ensuring that potential incidents can be recorded and reviewed regardless of lighting conditions. The camera also includes motion detection capabilities, which can trigger alerts and record video when movement is detected, enhancing security measures.

Networking is another strong aspect of the DCS-6620G. The device supports both wired and wireless connections, making installation flexible and straightforward. Users can connect it to their local area network (LAN) through Ethernet or utilize Wi-Fi for a wireless setup. The camera is compatible with the UPnP standard, facilitating easy integration into existing network infrastructures.

For user convenience, the DCS-6620G offers a web-based interface that allows for remote access and control via smartphones, tablets, and computers. This feature empowers users to monitor their premises in real-time from virtually anywhere in the world.

In summary, the D-Link DCS-6620G network camera is a versatile and feature-rich surveillance solution designed for various applications. Its PTZ capabilities, high-quality imaging, night-vision technology, motion detection, versatile networking options, and user-friendly remote access make it a reliable choice for anyone looking to enhance their security system. With this camera, users can ensure peace of mind through vigilant monitoring and proactive surveillance.
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