System for extending existing copper cabling for parallel data transmission

Abstract

System for extending an existing twisted copper cable for data transmission, comprising the selection of an additional conductor within the cable as an additional channel, the physical encoding of the data to be transmitted via this additional channel using embedded clock encoding, training and clock recovery using an initial training sequence, the exchange of connectivity data for autonegotiation, and an automatic fallback to the primary Ethernet link in case of missing or faulty autonegotiation.