SENA PS400 - Manual (Page 22)

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3.1.2 IP address
In the Static IP mode, the IP address is an identification number assigned to a computer as a
permanent address on the network. Computers use IP addresses to identify and talk to each other on
the network. Choose the proper IP address which is unique and valid on the network environment.
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Enter IP address: 192.168.1.100[ENTER]
Figure 3-2. Setting the IP address in Static IP mode
Note:
The IP address in the form of 192.168.1.x is private in a sense that they are not assigned by an ISP.
Application of the HelloDevice Pro Series may require sending data back and forth over a public
network, such as the Internet. In this case, it is required to assign a valid public IP address. The public
IP address is generally purchase d or leased from a local ISP.
3.1.3 Subnet mask
A subnet represents all the network hosts at one geographic location, in one building, or on the same
local area network. When there is any outgoing packet over the network, the HelloDevice Pro Series
will check whether the desired TCP/IP host specified in the packet is on the local network segment
with the help of the subnet mask. If the address is proven to be on the same network segment as the
HelloDevice Pro Series, the connection is established directly from the HelloDevice Pro Series.
Otherwise, the connection is established through the given default gateway.
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Enter subnet mask: 255.255.255.0[ENTER]
Figure 3-3. Setting the subnet mask in Static IP mode
3.1.4 Default gateway
A gateway is a network point that acts as an entrance to another network. Usually, the computers that
control traffic within the network or at the local Internet service provider are gateway nodes. The
HelloDevice Pro Series needs to know the IP address of the default gateway computer in order to