Graham Sutherland / Polynomial@whitequark l always assumed they were doing something like 100BASE-T1 down the sideband pins, rather than glomming the signals down the actual video data lines using what is essentially the same trick POTS used to have both directions of audio going down a single twisted pair.
GNU social JP is a social network, courtesy of GNU social JP管理人. It runs on GNU social, version 2.0.2-dev, available under the GNU Affero General Public License.
All GNU social JP content and data are available under the Creative Commons Attribution 3.0 license.