In my PepLink Balance 300 router (lb300) there's an option called DSL Optimization with the following description:
When a DSL circuit's uplink becomes busy, it is a fact that the downlink bandwidth is affected. Users cannot download data in full speed until the uplink becomes less congested. The DSL Optimization could relieve such problem. When it is enabled, the download speed will be less affected by upload traffic.
I'm curious if this kind of optimization is available also in linux deamons/drivers dealing with WAN connections of DSL type?