Extron electronic IPL T PCS4i manual Power level reference threshold

IP address	A unique, 32-bit binary number (12 digit decimal number — nnn.nnn.nnn.nnn) based on
	version 4 of the internet protocol (IPv4) that identifies each sender and each receiver of
	information connected to a LAN, WAN, or the Internet. IP addresses can be static (see Static
	IP) or dynamic (see DHCP).

IP net mask/subnet mask

A 32-bit binary number (12 digit decimal number — nnn.nnn.nnn.nnn) used on subnets (smaller, local networks) to help the router determine which network traffic gets routed internally to local computers and which network traffic goes out on the Internet.

M

Media Access Control (MAC) Address

A unique hardware number given to devices that connect to the Internet. When your computer or networking device (router, hub, interface, and so on) is connected to the Internet, a table relates the device IP address to its corresponding physical (MAC) address on the LAN.

P

Ping (Packet Internet Groper)

A command that is used to test connectivity between IP devices. The Internet Control Message Protocol (ICMP) echoes Ethernet packets to determine whether a network device is active and what the bidirectional delay is in communicating with it.

Port number	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.

Power level reference threshold

(See Reference threshold.)

R

Reference threshold

The point at which the power level (full or standby) at which a device is operating changes. This threshold is recognized by the IPL T PCS4, which can be configured to sound an alarm whenever a connected device passes this threshold.

Receptacle	A connector on a power supply that is equipped to receive a plug. The IPL T PCS4 has four
	receptacles into which devices can be plugged, enabling the PCS4 to monitor and schedule
	power for the connected devices.

S

SIS (Simple Instruction Set) commands

A set of commands developed by Extron that allows control of the PCS4 via the keyboard of a PC with an Ethernet connection. A minimal number of characters are used in these commands and responses.

Standby reference threshold

The point at which a device starts to operate at standby power.

IPL T PCS4 • Glossary 61