D-Link DCS-7510 User Manual page 62

Section 5 - Troubleshooting
If a firewall exists on the network, port 80 needs to be opened for ordinary data communication, streaming audio,
streaming video. The DCS-7510 uses port 5002 for streaming audio and port 5003 for streaming video. These
ports or the ports you specify from the Advanced Tab in the Configuration screen, needs to be opened.
9. Why am I unable to access the DCS-7510 from a Web browser?
Ensure that the ports configured for the DCS-7510 on the router or firewall are correct. In order to do that, you
need to determine if the DCS-7510 is behind a router or firewall and then properly configure the ports of your
DCS-7510. 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, with an Ethernet crossover cable. If the
problem is not solved the Network Camera might be faulty.
10. Why does the Network Camera work locally but not externally?
This might be caused by the firewall protection on your network. You may have to change the firewall settings in
order for the Network Camera to be accessible outside your local LAN. Check with the Network Administrator and
ensure 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.
11. I connected the Network Camera directly to a computer with a Ethernet cable and received a 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. This error can also occur if the Installation
Wizard icon is clicked more than once starting from the setup wizard.
12. The images appear to be of poor quality, how can I improve the image quality?
Make sure that your computers display properties are set to at least 6-bit color. Using 16 or 256 colors on your
computer will produce dithering artifacts in the image, making the image look as if it is of poor quality. In the Image
Setup section of the web interface, you can adjust image related parameters including brightness, contrast, and
saturation. Please refer to the Setup > Image Setup section for detailed information.
D-Link DCS-7510 User Manual 62