1. The Full Service Access Network (FSAN) Group, .
2. ITU-T Recommendation G.983.1. Broadband optical access systems based on Passive Optical Networks (PON); 2005.
3. ITU-T Recommendation G.984. Gigabit-capable passive optical networks (GPON); 2008.
4. ITU-T Recommendation G.987. 10-Gigabit-capable passive optical networks (XG-PON); 2016.
5. ITU-T Recommendation G.9807.1. 10-Gigabit-capable symmetric passive optical network (XGSPON); 2017.