User's Manual

SPEEDLAN 9200 User Guide Part # 34357-MNL Rev.03
Glossary-11
Last mile
Any type of telecommunications technology where data (voice, video, etc.) is traveled within relatively short
distances to maintain to highest quality of bandwidth and throughput to the user.
Latitude
This is the geographic latitude of the location of the terminal.
LED
This is a light-emitting diode, which is a semiconductor, that sends out visible light when an electrical current
moves through it. An electronic device that emits light with little generation of heat.
Line of Sight (radio) (LOS)
A condition whereby the antennas of a given link have a sufficient path for communication. It requires that at
least 60% of the Fresnel zone between them be unobstructed. (Do not confuse with Loss of Signal.)
Loopback
This is the process of sending out a test signal to the device on the network so that you know if your signal
was successful or unsuccessful.
Loss of Signal (LOS)
The signal from the user’s device does not appear in the DSX or E1 interface. (This is not to be confused with
Line of Sight.)
MAC address (MAC)
A MAC Address requires 12 hex-digits in groups of two that are separated by dashes or
semicolons (i.e., 00:05:D5:12:AF:01).
MAN
This is a metropolitan network that enables computers, network equipment, other peripherals, and more than
one LAN to communicate within the city or nearby limits.
Management Information Base (MIB)
The MIB is the definition of all standard objects that may be addressed inside a device. The most common
protocol to retrieve the information associated to a specific object is SNMP.