Broadbandloop: a full-service access network for residential and small business users. - Niels Engell Andersen; Paulo M. N. Nordeste; A. Manuel de Oliveira Duarte; Hans Erik Lassen; Anders Ekblad; Andrzej R. Pach; Krzysztof Amborski; Lars Dittmann (IEEE Commun. Mag., 1997)