Randall Stephenson at AT&T "needs 1 gig speeds." and promises "1 gig speeds ubiquitously." Sckipio is ready to start delivering, with 212 MHz Amendment 3 chips soon to sample to selected customers - including AT&T suppliers. Using 212 MHz of spectrum almost doubles the capacity of G.fast, reaching close to 2 gigabits between upstream and downstream in lab conditions.
1.5 gigabits downstream should be achievable over the short loops typical in apartment buildings. Adtran and Huawei have demo'd external boxes that can vector 48-96 ports, but Sckipio does not require the complexity of external vectoring. Instead, the first DSLAM supports 24 or 48 ports and can be daisy-chained with others on demand. This reduces the initial capex.
cDTA allows switching between upstream and downstream for each line.