Is this a little low for a 360 ish meter line or about right?
I'd say it's good for that line length. G.fast uses only the higher frequencies (to avoid those used by ADSL and VDSL) and those are the ones which suffer the most from attenuation over distance.
Check your contract to see if you have a speed guarantee. Consider how much extra you're paying for G.fast, and whether it's worth it for a small increase in download speed and a loss in upload speed.
The sync speed that you get could change over time based on factors such as temperature and humidity - even on VDSL I find I get 4.5-5Mbps upload in winter and 3.5-4Mbps upload in summer (that's on an estimated 800-900m line length)
It's actually cheaper for me to have upgraded to gfast due to the black friday deal and other discounts on my account.
We estimate your line could support between:
120.1 and 144.2 Mbps download speed
7.0 and 19.3 Mbps upload speed
You should expect a Guaranteed Minimum Download Speed of 100.0 Mbps.
Connection Speed 79999 kbps 19999 kbps
Line Attenuation (dB) DS1:9.5 DS2:20.9 DS3:31.1 US0:5.3 US1:17.8 US2:24.6
Noise Margin (dB) DS1:6.5 DS2:6.5 DS3:6.5 US0:13.7 US1:13.8 US2:13.8
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