Quadrature Amplitude Modulation. A combination of AM and PM
systems. QAM is used in high speed modems, like DSL and cable modems.
Also see modulation,
AM,
PM, DSL, and
cable modem.
Quality of Service. Refers to priority levels of a
packet based on its type. Delay-sensitive packet such as voice
call and video conference are assigned top QoS level. QoS
tag is used in a multi-service packet network to ensure
that all packets are received timely and correctly.
