A method and appartus for converting FFE and FBE coefficients from a DOCSIS compatible cable modem termination system upstream equalizer into FFE only coefficients to be sent down to the cable modem which transmitted the training burst which resulted in convergence on the FFE and FBE coefficients. This enables the ionic current to be advantageously scaled. One type of controlled polymerization is the reversible addition-fragmentation chain transfer process, which has characteristics of a living polymerization. The client additionally includes a component for validating copies of data items held by the client item store and initiating a request for an updated copy of a data item from the server if the copy held by the item store is out of date and a user interface for enabling a user to interact with the data items to access the associated source data entities.