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DCS-6620 User’s Manual
D-Link Systems, Inc.
Frequently Asked Questions
Q: Can the PTZ Internet Camera be setup as a PC-cam on a computer?
A: No, the PTZ Internet Camera is used only on an Ethernet or Fast Ethernet network. The
D-Link DSB-C110, DSB-C310, can be used as a PC Camera (Webcam).
Q: Can the PTZ Internet Camera be connected to the network if it consists of only private IP
addresses?
A: The PTZ Internet Camera can be connected to a LAN with private IP addresses.
Q: Can the PTZ Internet Camera be installed and work if a firewall exists on the network?
A: If a firewall exists on the network, port 80 is open for ordinary data communication. The DCS-
6620 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 if you change the default
ports) need to be opened on the firewall. Please refer to page 28 for more information.
Q: Why am I unable to access the PTZ Internet Camera from a web browser?
A1: If a router or firewall is used on the network, the correct ports for the DCS-6620 may not
be configured on the router or firewall. To correct the problem, you need to determine if the
DCS-6620 is behind a router or firewall and if the router or firewall is properly configured for
the ports the DCS-6620 is using. Refer to Page 28 for help in opening the correct ports on a
router or firewall for use with the DCS-6620.
A2: 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 PTZ Internet Camera
might be faulty.
Q: Why does the PTZ Internet Camera work locally but not externally?
A1: This might be caused by network firewall protection. The firewall may need to have some
settings changed in order for the PTZ Internet Camera to be accessible outside your local
LAN. Check with the Network Administrator for your network.
A2: Make sure that the PTZ Internet Camera isn’t conflicting with any Web server you may
have running on your network.
A3: The default router setting might be a possible reason. Check that the configuration of the
router settings allow the PTZ Internet Camera to be accessed outside your local LAN. Please
refer to page 31 for more information.