D-Link DCS-3415 Guía De Instalación Rápida página 3

Troubleshooting
1. Why does the 18x PoE Network Camera work locally but not externally?
‧ This might be caused by network firewall protection. The setting of the firewall may need to be
changed in order for the 18x PoE Network Camera to be accessible outside of your local LAN.
Check with the Network Administrator for your network.
‧ Make sure that your 18x PoE 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 allows the 18x PoE Network Camera to be accessed outside of your local LAN.
2. Noisy images occur. How can I solve the problem?
The video images might be noisy if the 18x PoE Network Camera is used in a very low light
environment. To solve this issue you need more lighting.
3. 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
‧
Advanced > Image Setup section of the Web management you need to adjust the image
related parameters such as brightness, white balance and power line frequency for
fluorescent light.
4. Can the 18x PoE Network Camera be used outdoors?
The 18x PoE Network Camera is not weatherproof. It needs to be equipped with a
weatherproof case for outdoor use but it is not recommended.
5. Can the network camera be installed and work if a firewall exists on the network?
If a firewall exists on the network, port 80 is open for ordinary data communication. The
DCS-3415 uses port 554 for RTSP streaming. These ports – or the ports that you specified
in the Setup Tab in the Configuration screen – need to be opened on the firewall.
6. Why am I unable to access the 18x PoE Network Camera from a web browser?
If a router or firewall is used on the network, the correct ports for the DCS-3415 may not be
configured on the router or firewall. To correct the problem, you need to determine if the
DCS-3415 is behind a router or firewall and if the router or firewall is properly configured for
the ports the DCS-3415 is using. Refer to Page 28 for help in opening the correct ports on a
router or firewall for use with the DCS-3415. 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 18x PoE Network Camera might be faulty.
7. What is the maximum number of users that can access DCS-3415 simultaneously?
The maximum number of users that can log onto the 18x PoE Network Camera at the
same time is 10. Please keep in mind the overall performance of the transmission speed
will be reduced if many users have logged on to the camera simultaneously.
(For further troubleshooting, please refer to the User manual on the CD ROM)
18x PoE Network Camera image display is incorrect. Through the
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