The main PON (Passive Optical Network) technologies include:
GPON (Gigabit PON) – ITU-T G.984 standard
10G-PON (XG-PON/XGS-PON) – ITU-T G.987/G.9807.1 standard
NG-PON2 (Next-Generation PON2) – ITU-T G.989 standard
However, 15G-PON is not an officially recognized PON standard. There is no such technology defined under ITU-T or IEEE for PON-based networks.
Thus, the correct answer is 15G-PON, as it does not exist in the PON technology family.
[Reference:, HCSA-Sales-Transmission & Access Official Documentation – Section: PON Technology Overview, ITU-T G.984, G.987, and G.989 Standards for PON, ]
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