Another update: I've connected the PN directly to the test socket using the filter/cables provided by plusnet
The PNH1 reports.
6. Data rate: 3440 / 26475
7. Maximum data rate: 3440 / 28110
8. Noise margin: 6.1 / 4.1
9. Line attenuation: 32.5 / 26.9
10. Signal attenuation: 32.6 / 23.5
11. Data sent/received: 0.8 MB / 3.2 MB
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Something still smells fishy, that upload seems rather low..
I seek the wisdom of the OR engineers who haunt this forum