ITU-T Recommendations

Recommendation ITU-T G.993.2 specifies an access technology that exploits the existing infrastructure of copper wires that were originally deployed for POTS services. It can be deployed from central offices, from fibre-fed cabinets located near customer premises, or within buildings. This Recommendation is an enhancement to ITU T G.993.1 that supports asymmetric and symmetric transmission at a bidirectional net data rate up to 200 Mbit/s on twisted pairs using a bandwidth up to 30 MHz.

This version of this Recommendation integrates all the previous amendments and corrigenda with the 2011 version of Recommendation ITU-T G.993.2.

This version of Recommendation ITU-T G.993.2 corrects or adds the following functionality:

– Method to address the misestimation of the SNR during MEDLEY (Amendment 2)

– Segmentation of SOC messages for profile 35b(Corrigendum 1)

– Annex D: Long reach VDSL2 (Amendment 3)

– Near-end anomalies for loss-of-power, host-reinit and spontaneous interruptions (Amendment 4)

– Addition of operation per the North American region for profile 35b (Annex Q) (Amendment 4)

– Addition of operation per the China region for profile 35b (Annex Q) (new)

– Addition of Successful SRA counter (new)

– Long reach VDSL2 corrigendum related to MAXNOMATP (new)

– Corrigendum to MAXMASK definition in Table 7‑5(new)

– Corrigendum to use of US0 with 35b profile for the North-America region (new).