Gigabit Passive Optical Networks (GPON) - ITU-T G.984 - GPON - (Gigabit PON). GPON - is an evolution of the BPON standard. It supports higher rates, enhanced security, and choice of Level 2 support (ATM, GEM, Ethernet). http://en.wikipedia.org/wiki/GPON www.ponforum.org/presentations/page115.html www.ponforum.com/presentations/page130.html See the Interactive Television Institute.