[quote quote=4930]Thank you very much, for your perfect expression … I’m using DSL-N17U … :) I think what you’re saying is valid in this modem … I’m in beta_790, testing it … 
do you think beta_783, beta_790 more up to date?[/quote]
Yes more upto date firmware is _790, the DSL-N17U has a MediaTeK DSL Chipset (Ralink was Brought by MediaTeK) and not as good as Broadcom / Lantiq (my view) for VDSL.
MediaTeK works well (high synch) on short DSL lines with no line noise etc. DSL for ADSL is very tweakable with MediaTeK chipsets.
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