DF4900HD / DF4500HD
www.dallmeier.com
18
Network with Routers
If the network connection to the device is established via a router/gateway with NAT (Net-
work Address Translation) function, the live video may not be shown in certain circum-
stances. In this case, two solutions are available:
The router/gateway has to be configured for a correct address translation of data packets
sent by the User Datagram Protocol (UDP). UDP is by default used by the streaming func-
tion of the device.
An easier solution is to activate the
Networks with routers (NAt)
checkbox. In this case,
the device switches the protocol of the streaming function to the Transmission Control Pro-
tocol (TCP). To receive the data packets, the port 30000 for the DaVid Protocol
1
and port
80 for the Hypertext Transfer Protocol (HTTP) must be open.
Note that at data transmission over TCP
• normally no packet loss (lack of images) occurs.
• short-term peaks in network traffic may occur.
• low delays may occur.
The “Networks with routers (NAT)” function does not affect the “Video streaming” function
7.3
Login
The graphical user interface of the configuration mode is displayed after the successful
identification as authorized user.
Note that the factory default password of user group
Group 1: admin
is “
3
”.
Notice
Risk of misuse by unauthorized users!
Change the factory default password as soon as possible.
Click
coNFiG
in the user interface of the live mode.
The login dialogue is displayed.
Fig. 7-2
Enter the
Username
if required.
Enter the
Password
.
Confirm with
oK
.
1
Dallmeier Video Protocol
