Lightwave Particles of light known as photons travel in waves. The length of the waves determines the light's color, speed, and behavior in a lightguide. Line Loopback Line loopback. Line Quality Monitoring A feature that enables the Lucent unit to monitor the quality of a link. LQM counts the number of packets sent across the link and periodically asks the remote end how many packets it has received.
Discrepancies are evidence of packet loss and indicate link quality problems.
The Lucent unit can tear down and reestablish a call if the problems on the link exceed a specified threshold. Line Width Also known as geometry or design rule. Describes the smallest size of the features on a chip, measured in microns. Since they define the size of a chip's features, line widths determine the number of transistors that can be placed on a chip. Line speed The speed of the physical wire attached to the interface or interface hardware.