OpenReach use VDSL2 Annex-B Profile 17a.
This has set upstream/downstream tones.
These tones can't be changed for individual lines.
The upstream varies not just by distance to the cabinet, but also the cabinets distance to the exchange.
Take the example of 2 cabinets.
Cabinet 1 is only 300m from the exchange.
Cabinet 2 is 4.3km from the exchange.
250m from cabinet 1 you may get 65/20
250m from cabinet 2 you may get 65/10
The guy on cabinet 2 is wondering why his upload is so poor compared to others he sees with similar downstream syncs. It's his cabinets distance from the exchange. This is all to prevent the vdsl2 signal killing existing adsl lines.
If you think your upstream is low compared to others with similar downstream, it's probably because your cabinet is some distance from your exchange.
Edited by j0hn83 (Wed 22-Aug-18 10:48:24)