Unobstructed elevation and azimuth angles necessary to properly aim a satellite antenna at a communications satellite. Also called look angle. [Arr11] Line Level
The level of a signal at a certain point on a transmission line, usually expressed in decibels. [Arr11] Line Speed
The rate at which individual bits are transmitted on a telephone connection. A modem's line speed may be set at 14,400 bits per second, an ISDN line at 64,000 bits per second. Line speed does not take into account whether the data it is sending has been compressed to increase actual throughput.