1. Home
    2. /
  2. Manuals
    3. /
  3. D-Link
    4. /
  4. DCS-2120
    5. /
  5. 26
Page 126 / 139 Scroll up to view Page 121 - 125
1±µ
D-Link DCS-±1±0 User Manual
Section ³ - Security
Select
Open location
Input your rtsp address
Note:
71.34.50.5 is the camera’s IP address in this sample.
Page 127 / 139
1±¶
D-Link DCS-±1±0 User Manual
Section ³ - Security
Enjoy streaming video on your cellphone.
Page 128 / 139
1±·
D-Link DCS-±1±0 User Manual
Section ´ - Troubleshooting
1 What is an Network camera?
The Network camera is a stand-alone system connecting directly to an Ethernet or Fast Ethernet network. It differs
from a conventional PC Camera, the Network camera is an all-in-one system with built-in CPU and Web-based
solutions providing a low cost solution that can transmit high quality video images for monitoring. The Network
camera can be managed remotely, accessed and controlled from any PC/Notebook over an Intranet or the Internet
from a Web browser.
2. What is the maximum number of users that can be allowed to access DCS-2120 simultaneously?
The maximum number of users that can log onto the Network camera at the same time is 10. Please keep in mind
the overall performance of the transmission speed will slow down when many users are logged on.
3. What algorithm is used to compress the digital image?
The Network camera utilizes MPEG-4 Simple Profile Mode image compression technology to provide high quality
images.
4. Can I capture still images from the Network camera?
Yes you are able to capture still images with the snapshot function from the software application CD supplied with
the Network camera or with the snapshot function on the Home page using an Internet browser.
5. Can the Network camera be used outdoors?
The Network camera is not weatherproof, and needs to be equipped with a weatherproof case in order to be used
outdoors (recommended).
6. When physically connecting the Network camera to a network what network cabling is required?
The Network camera uses Category 5 UTP cable allowing 10 Base-T and 100 Base-T networking.
7. Can the Network camera be setup as a PC-cam on a computer?
No, the DCS-2120 Network camera is used only on a wireless 802.11b/g, Ethernet, or Fast Ethernet network.
Troubleshooting
Page 129 / 139
1±¸
D-Link DCS-±1±0 User Manual
Section ´ - Troubleshooting
8. Can the DCS-2120 be connected to the network if it consists of only private IP addresses?
Yes, the Network camera can be connected to a LAN with private IP addresses.
9. Can the DCS-2120 be installed and work if a firewall exists on the network?
If a firewall exists on the network, port 80 needs to be opened for ordinary data communication. The DCS-2120
uses HTTP port and RTSP port to stream video data. These ports (or the ports you specify from the Advanced Tab
in the Configuration screen if you change the default ports) need to be opened in the firewall device. Please refer to
page 124 for more information.
10. Why am I unable to access the DCS-2120 from a Web browser?
If a router or firewall is used on the network, the correct ports for the DCS-2120 may not be configured on the
router or firewall. To correct the problem, you
need to determine if the DCS-2120 is behind a router or firewall and
if the router or firewall is properly configured for the ports the DCS-2120 is using. Refer to page 124 for help in
opening the correct ports on a router or firewall for use with the DCS-2120.
Other possible problems might be due to the network cable. Try replacing your network cable. Test the network
interface of the product by connecting a local computer to the unit, utilizing a Ethernet crossover cable. If the
problem is not solved the Network camera might be faulty.
11. Why does the Network camera work locally but not externally?
This might be caused by
network firewall protection. The firewall may need to have some settings changed in
order for the Network camera to be accessible outside your local LAN. Check with the Network Administrator for
your network.
Make sure that the Network camera isn’t conflicting with any Web server you may have running on your network.
The default router setting might be a possible reason. Check that the configuration of the router settings allow the
Network camera to be accessed outside your local LAN. Please refer to page 124 for more information.
Page 130 / 139
1²0
D-Link DCS-±1±0 User Manual
Section ´ - Troubleshooting
12. I connected the Network camera directly to a computer with a cross-over cable Ethernet cable and
received the following Windows error upon running the Installation Wizard:
This Windows error will occur if the Network camera is connected to a computer that is not
properly configured with a valid IP address. Turn off DHCP from the Network Settings in Windows
®
and configure the computer with a valid IP address, or connect the camera to a router with DHCP
enabled (see page 144).
13. Why does a series of broad vertical white lines appear throughout the image?
It could be that the CMOS sensor has become overloaded when it has been exposed to bright lights such as direct
exposure to sunlight or halogen lights. Reposition the Network camera into a more shaded area immediately as
prolonged exposure to bright lights will damage the CMOS sensor.
14. Noisy images occur. How can I solve the problem?
The video images might be noisy if the Network camera is used in a very low light environment. To solve this issue
you need more lighting.
15. The images appear to be of poor quality, how can I improve the image quality?
Make sure that your computer’s display properties are set above 256 colors. Using 16 or 256 colors on your
computer will produce dithering artifacts in the image, making the image appear to be of poor quality.
The configuration on the Network camera image display is incorrect. Through the
Advanced > Image Setting
section of the Web management you need to adjust the image related parameters
such as brightness, contrast,
hue and power line frequency for fluorescent light. Please refer to the
Advanced > Image Setting
section on Page
43 for detailed information.

Rate

3.5 / 5 based on 2 votes.

Popular D-Link Models

Famous Router IPs
Famous Router Companies
Bookmark Our Site

Press Ctrl + D to add this site to your favorites!

Share
Top