Have a Billion DXL modem/router. Been working fine until recently. The dmt tool shows loss of tones from 469 through to 497 basically all the top end frequencies. I'm with Sky on max unlimited (LLU) for internet and BT for phone. The orange ring wire has been removed from the NTE box and all extensions.
This has just started happening since FTTC work began in the exchange. I've noticed that when doing a tracert the Sky gear has changed in the phone exchange. different router hop name.
Would be glad of some thoughts on the matter.