Captioned Telephone Service

A Telecommunications Relay Service (TRS) that involves a special

telephone with a text display. Rather than using TTY technology, the called party’s speech is re-voiced by the communications assistant (CA), converted into text by a voice recognition system, and transmitted directly to the callers display telephone. See also text, TRS, TTY, and voice recognition.

74570c03.qxd 9/11/07 12:19 PM Page 83

• loopback address
• loopback test
• loop current
• loop start
• loose-tube cable
• LOS (Line-of-Sight)
• loss
• loss budget
• lossless compression
• lossy compression
• low delay code excited linear prediction (LD-CELP)
• low earth orbit (LEO)
• low frequency (LF)
• Low Income Consumers Program
• low-order mode
• low-pass filter
• Low-Power Radio Service (LPRS)
• Low-Power Radio Service (LPRS)
• low-tier
• low-tier
• low voltage (LV)
• low-water-peak fiber (LWPF)
• LPC (Linear Predictive Coding)
• lpi (lines per inch)
• LPRS (Low-Power Radio Service)