Starting in 1995, work on fiber to the home architectures was done by the Full Service Access Network (FSAN) working group, formed by major telecommunications service providers and system vendors [REF].
G.987 defined 10G-PON with 10 Gbit/s downstream and 2.5 Gbit/s upstream - framing is "G-PON like" and designed to coexist with GPON devices on the same network [REF].