The video is rather old. Modern cable systems use optical amplifiers, there are no optical - electrial - optical conversion. Repeater type systems are no longer in service. Modern sytsems typically use 4 or 8 fibre pairs, each fiber pair supports multiple wavelengths of light (DWDM) - for instanc...
apple suck .. buy the galaxy .. with android 3.0 soon it will beat the overpriced apple on every front.