Telecommunication Standard Terms
This glossary provides standard definitions for the fields subsumed by the umbrella discipline of telecommunications. The terms and definitions are drawn from authoritative non-Government sources such as the International Telecommunication Union, the International Organization for Standardization, the Telecommunications Industry Association, and the American National Standards Institute, as well as from numerous authoritative U.S. Government publications.
quadrature amplitude modulation (QAM)
quadrature phase shift keying (QPSK)
quadruply clad fiber
quality control (QC)
quality of service (QOS)
quantum limited operation