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MLC 104 IP Plus Series • Reference Material
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HTTP (HyperText Transfer Protocol)
HTTP is a web protocol based on TCP/IP that is used to fetch HyperText objects from
remote web pages.
IP (Internet Protocol)
IP is the protocol or standard used to send information from one computer to another on
the Internet.
IP address
An IP address is a unique, 32-bit, binary number (12 digit decimal number,
xxx.xxx.xxx.xxx
) that identifies each device or device port (an information sender and/
or receiver) that is connected to a LAN, WAN, or the Internet. IP addresses can be static
(see static IP) or dynamic (see
IP net mask/subnet mask — See subnet mask.
IRCM (Infrared Control Module)
A type of Extron keypad used with MediaLink Controllers (MLCs) and system switchers. IR
commands for source devices (VCRs, DVD players, receivers) can be stored in the MLC or
switcher. After setup, pressing a button on the IRCM causes the controller or switcher to
send a command to the source device.
MAC (Media Access Control) Address
A MAC address is a unique hardware number given to devices that connect to a network
such as the Internet. When a computer or networking device (router, hub, interface) is
connected to a LAN or the Internet, a table (see ARP) relates the IP address of the device to
its corresponding physical (MAC) address on the LAN.
Ping
Ping is a utility/diagnostic tool that tests network connections. It is used to determine if the
host has an operating connection and is able to exchange information with another host.
The term (ping) is a reference to submarine sonar, which sends out a signal and waits to
hear it echo (“ping”) back from a submerged object, much like how the ping utility functions
in a network.
Port number
This is a preassigned address within a server that provides a direct route from the
application to the transport layer or from the transport layer to the application of a TCP/IP
system.
Section 508
Section 508 is a portion of the United States Rehabilitation Act (29 U.S.C. 794d) that
requires Federal agencies to meet specific accessibility standards when buying, developing,
maintaining, or using information and multimedia technology. This law was enacted to
eliminate barriers in access for people with disabilities and to encourage development of
technologies that help achieve these goals. Visit
comply with Section 508.
SSI (server side include)
An SSI is a type of HTML instruction set that tells the MLC (or some other web server)
dynamically which material to include in the contents of a web page or e-mail. SSI files
typically have a file extension of
.shtml
.
Static IP
Static IP refers to an IP address that has been specifically (instead of dynamically—see
) assigned to a device or system in a network configuration. This type of address
requires manual configuration of the actual network device or system and can only be
changed manually or by enabling DHCP.
Subnet — See subnetwork.
Subnet address
The portion of an IP address that is specifically identified by the subnet mask as the
subnetwork.
Subnet mask
Subnet mask is a 32-bit binary number (12 digit decimal number,
xxx.xxx.xxx.xxx
)
used on subnets (smaller, local networks) to help routers determine which network traffic
gets routed internally (within the subnetwork) to local computers and which network traffic
goes out to the rest of the network or the Internet. It is an address mask used to identify the
bits of an IP address that are used for the subnet address. Using a mask, the router does
not need to examine all 32 bits, only those selected by the mask.
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