Installation by Kelly's or Quinn's subcontractors, rather than a BT Openreach engineer? With speeds well below the estimate?
My guess is a star-wired setup, with a junction box between the entry point and the NTE5, and extensions run from that junction box. That is death to FTTC, and not much better for ADSLx.
If you want to check, you should remove the NTE5 faceplate, though you can leave the VDSL2 interstitial filter module in place, then go round every extension socket in the house and see if a phone works plugged into it. If any does, I'm right. If none do, I'm wrong. Make sure you don't miss any, as even one is enough to screw things up.
My broadband basic info/help site - www.robertos.me.uk
| Domains,site and mail hosting - Tsohost
Connection - Plusnet
UnLim Fibre (FTTC). Sync ~ 59.4/14.4Mbps @ 600m. - BQM
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- Jean-Antoine Petit-Senn.
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