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C2904M-B (2/05) 47
Table I. Network Settings
Configuration Default
Description
Item Setting
Unit IP address 192.168.0.1 Enter a unique IP address that is valid for your network. The pre-configured default IP address allows for easy
configuration in closed environments. You can use a crossed cable to connect directly to a PC.
NOTE: Changing the IP address also affects the current browser connection. You will have to enter the new URL to
regain connectivity to the unit.
Subnet mask
255.255.255.0
Enter a valid subnet mask for your network.
Gateway 0.0.0.0 Enter the IP address of the router if the unit is to establish a connection outside of the local network. This is
IP address typically used in a WAN environment. This field can otherwise remain empty (0.0.0.0).
Video/Audio UDP Use the pull-down menu to select the means of transmission. Select TCP (Port 80) to send data through a firewall.
transmission Select UDP for communication between local networks.
Multicast Off Use the pull-down menu to select multicast streaming mode.
streaming
Besides a one-to-one connection between a transmitter and a receiver (unicast), the NET4001A lets you connect a
number of receivers to receive the video signal simultaneously. This is achieved by distribution of a single data
stream on the network itself to a number of receivers in a defined group (multicast).
Choose one of the options. With one of the MPEG options selected and a valid multicast group address selected in
the Multicast Group IP Address field, the NET4001A operates in multicast mode (data stream duplicated over the
network).
When multicast streaming is turned off, operation resorts to unicast mode.
Multicast group 0.0.0.0 This is the Multicast IP address. (Network hardware—such as switches, hubs, routers, etc.—must support the
IP address multicasting protocol, ICMP.) This field sets PelcoNet to use the multicasting protocol, which allows more efficient
use of bandwidth. The IP range is 224.0.1.0 through 238.255.255.255.
Some IP addresses may be reserved for system resources. Contact your network administrator for more information.
Multicast port 50000 Enter the port address for the MPEG-2 data stream.
MPEG-2
Multicast port 60000 Enter the port address for the MPEG-4 data stream.
MPEG-4
Multicast 1 Enter the number of seconds for the packet to live.
packet TTL
TTL stands for time to live. This setting defines the lifetime of multicast packages in the network. If multicast
traffic is to be transmitted over routers and switches this setting is important in adjusting the lifetime of the
package to the network topology (shape).