A return path may include a modem pair that is coupled to existing
electrical waveguides in a structure such as a house or office building.
Specifically, a first modem of the modem pair may be coupled to a first
end of a coaxial cable and to a video service terminal. A second modem of
the modem pair may be coupled to a second end of the coaxial cable and a
data interface. The first modem can modulate video control return packets
onto an RF carrier that is propagated over the coaxial cable to the
second modem. The video control return packets can be formatted as
Ethernet type packets. The second modem can demodulate the RF carrier to
extract the video control return packets and to forward these packets
towards a data service hub.