http://IP_address/path/CGI program?Parameter1=value1&Param2=value2&...
This program with its parameters can be opened using a button, a link, a form or the
address line of a web page. CGI programs are used by the Convision Call service,
for example, or for controlling non-supported devices via the serial URL port.
For more information on this topic, please refer to the Convision Programmer
Manual, which can be downloaded free of charge at www.convision.de.
10.8 TCP/IP and IP Addresses
TCP/IP is a group of protocols with the TCP (Transmission Control Protocol) and IP
(Internet Protocol) being the group's most important components. They form the
widest spread solution in the area of internetworking and have established a de facto
market standard.
Internet addresses are used to identify computers in TCP/IP networks. They are part
of the Internet Protocol and are therefore referred to as IP addresses.
The Structure of an IP Address
An IP address consists of four numbers between 0 and 255, separated by dots, e.g.
192.168.0.53. Every IP address is made up of 2 parts. The first numbers define the
network identification (network ID) the last define the device (host ID). The length of
each part is defined by the network mask. (see below).
To integrate a device into your local area network properly, you have to assign an IP
address to the device.
Every device needs its own IP address.
The Domain Name Service (DNS)
The domain name service enables the assignment of a name to each computer in a
TCP/IP network. The fundamental component of the DNS is a database that is
managed by a name server. These name servers can be either public or part of a
private network. Example:
Assuming a computer has the IP address 212.68.72.16
It has the assigned name "Computer.organization.de". This is a name for any
computer in any company located in Germany.
If you enter “http//: Computer.organization.de" in the address line of your browser a
connection to computer “212.68.72.16” will be established.
If a DNS server is not available in your LAN, use a text file that maps the names of
the individual computers to the associated IP addresses.
- 82 -
Convision V600 A Series
