ATIS 0600023

This technical report provides guidance on the meaning and for the Upstream Power Back Off (UPBO) control parameters for ITU-T Recommendation G.993.2 (VDSL2) when used in a North American Environment. Two parameters "a" and "b" to control UPBO are defined in ITU-T Recommendation G.993.2. This TR explains the meaning of these parameters, examples of their use and guidance to Network Operators and others on appropriate setting of their values.