When you say "the master socket", do you mean the normal socket on its outside, or the test socket inside - in the wall in this pic
? Are there any wires attached to the faceplate, as shown there?
Re your exchange, I see that ADSL2+ is available. With your attenuation that would probably be worse than the ADSL you are on, but ADSL2 might offer a small improvement. Are you specifically on an "up to 8Mbps" product from Supanet, or is that just a setting you can alter.
Re your Linksys router, I think it is a later WAG54 than I had until its wireless died. However, I replaced it with a Technicolor (was Speedtouch) 585v6 and straight out of the box it sync'ed 500kbps faster. That was followed by a series of Netgear 834s (the versions with Broadcom chips the same as the 585), all of which gave the same higher speed but were much more stable.
They are also easy to tweak the noise margin, (and swap between ADSL/2/2+ modes), so if you have a cleanish line you can gain a few hundred kbps there. There's a page on my website with instructions.
Have a look on eBay. Netgear 834v4 (no wireless), 834Gv4, 834GT, 834PN.
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
"Where talent is a dwarf, self-esteem is a giant."
- Jean-Antoine Petit-Senn.
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