At my old house I went on 50/10 FTTC when I moved in and the attainable rate on the BT Hub was always 74/20 so at recontract, I went with 80/20.
To give the line its best chance I went and got a HG612, which wasn’t brand new. The connection ran at 68/20, G.INP was on and around 8 weeks in, the SNR started to drop to around 5db and then 4db and then it ended back up at 6db.
I did a bit of reading on the Zyxel B10A and thought I’d give it ago. It took around 2 months but the connection went down to a 3db SNR, where it stayed. 76500/20000. It was absolutely rock solid.
The difference between the first house and this new one is the one half of the street had a choice of FTTP or FTTC. The top end, my end was on copper only. The majority were on FTTP judging by the exterior BT boxes on the houses.
This new house is completely copper only, with a Huawei HD cab with what looks like an extension on both sides. I’m expecting a load of crosstalk.
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SkyUltrafast FTTP 160