"XGS-PON" with 10Gbps uphill is "G.9807.1", and "NG-PON2" of 4 x 10Gbps is "G.989".
notebook-laptopIn fact, this was a plan from the beginning.The XG-PON initially had a specification formulation under the name "NG-PON (NEXT-Generation Pon)", but at this stage, it has been compatible with G-PON 2..The specified route was to prepare a 5Gbps version and a version with a speed increase to 10Gbps.
After that, it was called XG-PON1 and XG-PON2, respectively, but eventually the latter 10Gbps was named "XGS-PON".XGS means "10 (X) G Symmetric" (10G symmetric type), indicating that it was 10Gbps for both up and down.
The specifications of XGS-PON are somewhat interesting.In iTu-T, the standardization of XGS-PON has started after the XG-PON, but at the same time, the standardization of NG-PON2 to be explained next time is also started, and the expression is bad, but rather XGS-PON.There is a feeling that the work has progressed between one hand of NG-PON.
Furthermore, at first, it seems that if the standardization of NG-PON2 was completed, it would be a substitute for XGS-PON.However, because of the fact that it does not actually go, there is a feeling that the standardization of XGS-PON has been performed again.
As a result, ITU "G.9807.It was June 2016 that the standardization was completed.After that, "Erratum 1", which corrected the description mistakes, was released in March 2017 in March 2017.
