The cable from the pole looks different - like the newer black cable they use. However that goes into a small box on the wall just underneath the guttering, and this old brown non twisted pair cable comes out of that. Probably 15-20 metres of it.
We used to lose about 3-4DB on the SNR on the ADSL2 line when the sun went down, although it was stable and never dropped. I've no way to get the line stats since the ECI modem is difficult to hack and I can't be bothered really. As long as it works
The stats must be fairly good if he reckoned it is capable of 117mbps, so hopefully there is enough spare capacity there not to drop the link at night when it's noisier...