Really Slow Infinity Speeds.

Question

Had a problem with my line a couple of times were my connection kept dropping. the guys in indie suposedly fixed it twice but now that it has been sorted my internet speed has dropped from 30-40 mbps download and 10-12 up to 10-12 download and 0.6 upload.. why should i pay for bt infinity when im only getting ADSL speeds?

Answer 1

Check to see if you may be suffering from star wiring.
~~~
A fairly common form of miswiring is star wiring.  This is where extensions are taken off a junction box between the incoming telephone feed and the master socket.  These extensions may be regular telephone extensions, or may be SkyBoxes or alarms.  Those can cause serious issues.  It can be quite bad even if the extension isn't used, much worse if the extension is used.  If the extension is used, an old ADSL filter can make the issues marginally less bad.
Star wiring was not a problem with regular telephones (often installed in GPO days), or even a significant problem with ADSL.  It wreaks havoc with VDSL/FTTC/Infinity.  It is often not noticed by installers.  I asked my installer about it because it seemed odd, and he explicitly said it didn't matter (eg, he coulnd't be bothered).  There seem to be lots of evidence that subcontractors are more likely to miss/ignore it than real Openreach staff (I can't remember who got mine wrong).
This diagram may help.