Summary

This amendment is the first amendment to the integrated ITU‑T Rec. G.992.3 approved in January 2005. It specifies the following additions:

1)          Additions to clause 7 and Annex K for new optional valid S and D values in the PMS-TC framer configuration. This allows the achievement of higher net data rates while satisfying a configured minimum impulse noise protection (INP_min);

2)          Addition to 8.13.2.4 for warm handshake. This defines default values for some configuration parameters, when not explicitly exchanged in the G.994.1 (handshake) phase of initialization;

3)          Additions to Annex K to include new INP_min values. This allows a finer granularity for configuration of the minimum impulse noise protection (INP_min) and allows an optimization of related net data rates;

4)          Additions to the PTM‑TC Annex K.3 to support 64/65-octet packet encapsulation (as defined in new Annex N) in addition to HDLC packet encapsulation;

5)          A new Annex N defining the 64/65-octet packet encapsulation. The 64/65-octet encapsulation is defined by the IEEE 802.3 Ethernet standard and is now also included in the ITU-T DSL Recommendations;

6)          A new Appendix VI defining the packet layer to physical layer logical interface.

Revision marks are relative to the latest prepublished integrated version of ITU-T Rec. G.992.3.