A system for redistributing bandwidth among a plurality of customer premises equipments, CPEs, that are configured to operate in an initial bandwidth allocation, the system comprising: a first CPE of the plurality of CPEs configured to operate in a first initial set of tones based on the initial bandwidth allocation; a second CPE of the plurality of CPEs configured to operate in a second initial set of tones based on the initial bandwidth allocation; a distribution point unit, DPU,, coupled to the first CPE and the second CPE via a single line or multiple lines, respectively, as a point to multi-point access wherein the DPU is configured to: determine an excess available bandwidth condition of the first CPE; determine an insufficient available bandwidth condition of the second CPE; determine a bandwidth re-allocation based on the excess available bandwidth condition of the first CPE and the insufficient available bandwidth condition of the second CPE; and communicate, to the first CPE and the second CPE, a bandwidth allocation request and a plurality of granted tones to dynamically generate the bandwidth re-allocation among the first CPE and the second CPE from the initial bandwidth allocation, wherein the DPU is further configured to decrease an amount of time for channel estimation during the bandwidth re-allocation at the second CPE by increasing a number of positions to transmit probe symbols that indicate the plurality of granted tones being utilized by the plurality of CPEs in a line of twisted pair or cable line to the second CPE, while transmitting a quiet symbol or a probe symbol at positions on another line of twisted pair or cable line to the first CPE or to other CPEs. a first CPE of the plurality of CPEs configured to operate in a first initial set of tones based on the initial bandwidth allocation; a second CPE of the plurality of CPEs configured to operate in a second initial set of tones based on the initial bandwidth allocation; a distribution point unit, DPU,, coupled to the first CPE and the second CPE via a single line or multiple lines, respectively, as a point to multi-point access wherein the DPU is configured to: determine an excess available bandwidth condition of the first CPE; determine an insufficient available bandwidth condition of the second CPE; determine a bandwidth re-allocation based on the excess available bandwidth condition of the first CPE and the insufficient available bandwidth condition of the second CPE; and communicate, to the first CPE and the second CPE, a bandwidth allocation request and a plurality of granted tones to dynamically generate the bandwidth re-allocation among the first CPE and the second CPE from the initial bandwidth allocation, determine an excess available bandwidth condition of the first CPE; determine an insufficient available bandwidth condition of the second CPE; determine a bandwidth re-allocation based on the excess available bandwidth condition of the first CPE and the insufficient available bandwidth condition of the second CPE; and communicate, to the first CPE and the second CPE, a bandwidth allocation request and a plurality of granted tones to dynamically generate the bandwidth re-allocation among the first CPE and the second CPE from the initial bandwidth allocation, wherein the DPU is further configured to decrease an amount of time for channel estimation during the bandwidth re-allocation at the second CPE by increasing a number of positions to transmit probe symbols that indicate the plurality of granted tones being utilized by the plurality of CPEs in a line of twisted pair or cable line to the second CPE, while transmitting a quiet symbol or a probe symbol at positions on another line of twisted pair or cable line to the first CPE or to other CPEs.