D-Link DCS-2121 User Manual

Also see for DCS-2102: User manual Quick installation guide

Contents

55Frequently Asked QuestionsInternet Camera Features1 What is an Internet Camera?An Internet Camera is a standalone system that connects directly to an Ethernet or Fast Ethernet network and supported by the wireless transmission based on theIEEE 802.11g standard, whereas conventional PC Cameras require connection to a powered PC to function. An Internet Camera is an all-in-one system with abuilt-in CPU, providing a low cost web-based solution that can transmit high quality video images for monitoring. The Internet Camera can be managed remotely,and can be accessed and controlled from any PC locally or through the Internet via a Web browser.2 What is the maximum number of users that can be allowed to access DCS-2121 simultaneously?The maximum number of users that can log onto the Internet Camera at the same time is 10. Please keep in mind that overall video performance will slow downwhen multiple users are logged on.3 What algorithm is used to compress the digital image?MPEG-4 and MJPEG are used to provide high quality images at low bandwidths.4 Can I capture still images from the Internet Camera?Yes. You may record snapshots using the snapshot feature on the Home page. When viewing this page, press the “snapshot” button to capture the image and saveit to your hard drive.5 Can the Internet Camera be used outdoors?The Internet Camera is not weatherproof and is not recommended for outdoor use.6 What network cabling is required for the Internet Camera?The Internet Camera uses Category 5 UTP Twisted-pair cable for 10 Base-T and 100 Base-T networking.7 Can the Internet Camera be used as a webcam for my computer?No, the Internet Camera only functions through an Ethernet or wireless network. Other cameras such as the D-Link DSB-C110 and DSB-C310 can be used as aPC Camera (webcam).8 Can the Internet Camera be connected to a network if it consists of only private IP Addresses?Yes, the Internet Camera can be connected to a LAN with private IP Addresses.9 Can the Internet Camera be installed if a firewall exists on the network?If a firewall exists on the network, port 80 needs to be opened for data communication. You will need to do port forwarding by opening a port to the camera. Pleaserefer to your firewall’s product manual for detailed instructions.