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Chapter 8
Additional information
IP Basics
Many AUDAC products are controllable by Ethernet. The Ethernet connection which is used
on the AUDAC products is Transmission Control Protocol (TCP) & the Internet Protocol (IP)
(TCP/IP) based. There are some basics which you need to know to successfully make a TCP/
IP Ethernet connection.
Nearly all computers today support TCP/IP. TCP/IP is not a single networking protocol – it is
a suite of protocols named after the two most important protocols or layers within it – TCP
and IP.
As with any form of communication, two things are needed: a message to transmit and
the means to reliably transmit the message. The TCP layer handles the message part. The
message is broken down into smaller units, called packets, which are then transmitted over
the network. The packets are received by the corresponding TCP layer in the receiver and
reassembled into the original message.
The IP layer is primarily concerned with the transmission portion. This is done by means of
a unique IP address assigned to each and every active recipient on the network.
TCP/IP is considered a stateless protocol suite because each client connection is newly made
without regard to whether a previous connection had been established.
The IP address is always a number in the following format “192.168.000.001”. As you can
see, this address consists of 4 separate numbers ranging from “000” to “255”.
In simple terms, only the latest number of an IP address can be different within a network,
so there is a maximum of 256 unique addresses within a network, ranging from “xxx.
xxx.xxx.000” to “xxx.xxx.xxx.255”. The first three numbers must be the same to make
communication between several devices possible, else the devices can not communicate
with each other.
Example:
Device 1:
IP address:
192.168.000.
001
Device 2:
IP address:
192.168.000
.002
Device 3:
IP address:
192.168.001
.003
In this example, Device 1 can communicate with Device 2, but not with Device 3, because
the first three numbers must be the same. These first three parts are called the “IP
range”, so the devices must be in the same “IP range” to communicate with each other.
The “IP range” of home and office networks are defined by the network administrator,
this means that the IP range of your home or office network can be different from another
network. AUDAC products have the following IP address as default: “192.168.0.xxx”, this
means the standard IP range of AUDAC products is “192.168.000.xxx”. If your network is
using a different IP range, the AUDAC products will not be accessible from your network.
You can change the IP address of the AUDAC products to make them work properly in
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