Hi, i am from Germany, recently upgraded to 1&1 DSL 250 supervectoring and what a surprise my DSL-AC88U Annex B doesn’t sync with 35b with all the settings tried, only 17a syncing well (100MB/S) it seems the Router doesn’t support Annex Q supervectoring (V/Plus) despite it says on the package that it does or may be i’m missing something. Has anyone tried or have supervectoring 35b ? At the moment i am using Fritzbox 7530 from 1&1 and it’s working flawlessly but i would prefer ASUS because the better WiFi . Very pity indeed 
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