As Comcast and Charter Communications work to proliferate their IP-based video distribution joint venture, Xumo, across the North American cable industry and beyond, a key selling point has been the ability to lighten the heavy load of carrying traditional video signals on cable networks.
But it turns out that quadrature amplitude modulation, or QAM, the digital encoding standard for linear cable video, “is going to be with us for a long time,” according to Charter chief financial officer Jessica Fischer.
