Training Optimization of Multiple Lines in a Vectored System Using a Prepared-to-Join Group

An apparatus for initialization of a group of customer premises equipment devices (CPEs) during a training that in part registers capabilities of the CPEs, wherein at least one CPE registers late to the training and cannot be registered, wherein capabilities of the CPEs are determined during a joining phase of the training that determines whether a CPE device is capable of employing vectoring, the apparatus comprising:

• a vector engine placing the at least one CPE in a hold status that
• registers late by keeping a line active that is coupled to the at least one CPE;
• and
• wherein the vector engine provides another joining phase after the joining phase to register the at least one CPE that registers late.

A linecard for use in a DSLAM and configured to initialize a group of customer premises equipment devices (CPEs) during a Training Phase in which capabilities of the CPEs are registered,

• wherein at least one CPE registers late to the training and cannot be registered,
• wherein capabilities of the CPEs are determined during a Joining Phase of the Training Phase for determining whether a CPE device is capable of employing vectoring, the linecard comprising:
• a vector engine configured to place the at least one CPE, that registers late, in a hold status by keeping a line active that is coupled to the at least one CPE;
• and
• wherein the vector engine provides another joining phase after the joining phase to register the at least one CPE that registers late.