A system for enhancing data carrying capacity of a hybrid fiber cable, HFC, network comprising: a cable television, CATV, network comprising: a plurality of CATV cables connected to a plurality of communication devices; and a plurality of Coax Domain Nodes, CDNs, as junctions in the CATV network, wherein the plurality of CDNs are implemented in a concatenated alignment, wherein each of at least two of the plurality of CDNs communicates with a respective set of local CATV cable connected communications devices within a respective local frequency domain, wherein frequencies in the respective local frequency domain are lower than a threshold frequency; and an optical fiber node in communication with a cable head end, CHE, over an optical fiber and in communication with the plurality of CDNs over the CATV network, wherein each of the at least two CDNs (i) intercepts downstream CATV radio frequency, RF, signals at frequencies higher than the threshold frequency in the CATV network, (ii) selects downstream data obtained from the intercepted downstream CATV RF signals, (iii) transmits the selected downstream data at frequencies within the respective local frequency domain to the respective set of local CATV cable connected communications devices, (iv) intercepts local upstream CATV RF signals from the respective set of local CATV cable connected communication devices at frequencies within the respective local frequency domain, and (v) transmits a set of intercepted local upstream CATV RF signals or data obtained from the intercepted local upstream CATV RF signals to the optical fiber node over the CATV network at frequencies higher than the threshold frequency, wherein each of the at least two CDNs (272, 720) selects different portions of the downstream data from the intercepted downstream CATV RF signals at frequencies higher than the threshold frequency and transmits the different portions of the downstream data at frequencies lower than the threshold frequency within the respective local frequency domains (700, 704), wherein radio frequency signals at frequencies lower than the threshold frequency are confined in the respective local frequency domain and only radio frequency signals at frequencies higher than the threshold frequency are transmitted between two CDNs (272, 720), the respective local frequency domains (700, 704) being thus isolated from each other. a plurality of CATV cables connected to a plurality of communication devices; and a plurality of Coax Domain Nodes, CDNs, as junctions in the CATV network, wherein the plurality of CDNs are implemented in a concatenated alignment, wherein each of at least two of the plurality of CDNs communicates with a respective set of local CATV cable connected communications devices within a respective local frequency domain, wherein frequencies in the respective local frequency domain are lower than a threshold frequency; and an optical fiber node in communication with a cable head end, CHE, over an optical fiber and in communication with the plurality of CDNs over the CATV network, wherein each of the at least two CDNs (i) intercepts downstream CATV radio frequency, RF, signals at frequencies higher than the threshold frequency in the CATV network, (ii) selects downstream data obtained from the intercepted downstream CATV RF signals, (iii) transmits the selected downstream data at frequencies within the respective local frequency domain to the respective set of local CATV cable connected communications devices, (iv) intercepts local upstream CATV RF signals from the respective set of local CATV cable connected communication devices at frequencies within the respective local frequency domain, and (v) transmits a set of intercepted local upstream CATV RF signals or data obtained from the intercepted local upstream CATV RF signals to the optical fiber node over the CATV network at frequencies higher than the threshold frequency, (i) intercepts downstream CATV radio frequency, RF, signals at frequencies higher than the threshold frequency in the CATV network, (ii) selects downstream data obtained from the intercepted downstream CATV RF signals, (iii) transmits the selected downstream data at frequencies within the respective local frequency domain to the respective set of local CATV cable connected communications devices, (iv) intercepts local upstream CATV RF signals from the respective set of local CATV cable connected communication devices at frequencies within the respective local frequency domain, and (v) transmits a set of intercepted local upstream CATV RF signals or data obtained from the intercepted local upstream CATV RF signals to the optical fiber node over the CATV network at frequencies higher than the threshold frequency, wherein each of the at least two CDNs (272, 720) selects different portions of the downstream data from the intercepted downstream CATV RF signals at frequencies higher than the threshold frequency and transmits the different portions of the downstream data at frequencies lower than the threshold frequency within the respective local frequency domains (700, 704), wherein radio frequency signals at frequencies lower than the threshold frequency are confined in the respective local frequency domain and only radio frequency signals at frequencies higher than the threshold frequency are transmitted between two CDNs (272, 720), the respective local frequency domains (700, 704) being thus isolated from each other.