Vivotek PT3122 - Manual (Page 36)

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DDNS and UPnP Settings
“Enable DDNS” This option turns on the DDNS function.
“Provider” The provider list contains four hosts that provide DDNS services. Please
connect to the service provider’s website to make sure the service charges.
“Host name” If the User wants to use DDNS service, this field must be filled. Please
input the hostname that is registered in the DDNS server.
“Username/E-mail” The Username or E-mail field is necessary for logging in the
DDNS server or notify the User of the new IP address. Note: when this field is input
as “Username” the following field must be input as “Password”.
“Password/Key” Please input the password or key to get the DDNS service.
“Enable UPnP presentation” This turns on or off the UPnP function. When UPnP is
turned off, the camera cannot be found through network neighbors in MS Windows
XP. If the UPnP network component is installed in Windows XP, the hostname of the
Network Camera will be shown with bracketed IP address in the Network neighbors.
Ex: Network Camera with Pan/Tilt (96). That is: The hostname of the Network
Camera is “Network Camera with Pan/Tilt”, and the IP address of the Network
Camera is xxx.xxx.xxx.96, depends on the last value of the IP address assigned to
the Network Camera.
“Enable UPnP port forwarding” If the network router supports port forwarding
function, the Administrator can check the option to enable this function. The Network
Camera will negotiate the ports provided by the router after rebooted. During the
negotiation, the control channel port, video channel port and audio channel port are
configured automatically. One exception is if the http port number conflicts the port
number owned by other network devices, the Network Camera will have a warning
message on the network settings page. The HTTP port number is assigned manually,
for that users might not access the web pages if HTTP port number is unknown.
Users can access the Network Camera through Internet using different port provided
by the router, after the four ports are configured correctly. “Save” Click on this
button to save current settings for the DDNS service and UPnP function.