See also: Bandwidth Optimization, Switched Digital Video

CIMM DEFINITION: A device in some digital televisions or other devices that enables direct reception of any unscrambled digital cable channels with the use of a Set-Top Box. QAM stands for quadrature amplitude modulation, the format by which digital cable channels are encoded and transmitted via cable television providers. QAM that uses 6 MHz bandwidth carries 38.47 Mbp/s @256QAM (Source: Wikipedia)