This amendment to ITU-T Recommendation G.997.1 contains:
– addition of a new management interface "G" between the ME of the NT and the NMS;
– optional extension of some Channel test, diagnostic and status parameters and Line test,
diagnostic and status parameters to G.992.1, G.992.3, G.992.4 and G.992.5;
– addition of a maximum delay variation parameter;
– addition of a channel initialization policy selection parameter;
– support of new PSD masks of G.993.2.