Update: 29/10/2014

Same person from @BTCare. Sorry to hear still slower than before. I checked speed while on the call (~4.4mps down). She wanted to check something, called back 10mins later with:

Test show that there's a mismatch on the supplier side. I'll escalate, normally 48hrs turnaround, but I'll check tomorrow

So, we wait some more.

Update: 24/10/2014

Lovely engineer. Line is okay (but replaced master socket to one with integrated filter). Cabinet port is also okay, feed from DSLAM in fibre cabinet is gving rated 40Mbps but this falls to 4-ish by the time it reaches us. Can't check the fibre cabinet though ("that's another bit of BT, BT wholesale").

Now need to wait 10 days for the line to stabalise. Then, assuming no change, will need to choose whether to go back to ADSL or possibly try the 80Mbps feed from the DSLAM because "that might give you *-ish by the time it reaches you".

Update: 16/10/2014

A nice person from @BTCare called. They predicted 9Mbps, so will send an engineer to check.

Updated: 06/10/2014 08:08:57

• Initial mesaurements: line speed download is slower than before upgrade. Latency is increased. Upload speed is higher

Original: 20141003 07:35:40

BT are upgrading the broadband today (Friday). Or at least they've scheduled an engineer to. Let's use their tools for data gathering: BT wholesale speed test

Data

| Test | Download
(Mbps) | Upload
(Mbps) | Latency
(ms) | When | | :-----| --------------------:|----------------:|--------------:| :——: | | Before | | | | | | Dirty studio | 6.02 | 0.31 | 30.38 | Friday Day | | | 5.98 | 0.67 | 36.25 | | | | 6.08 | 0.77 | 44.38 | | | Dirty HH4 | 6.24 | 0.72 | 38.5 | | | | 6.02 | 0.71 | 35.25 | | | | 6.18 | 0.69 | 34.63 | | | Clean HH4 | 6.01 | 0.60 | 0.0 | | | | 6.24 | 0.72 | 39.0 | | | | 6.20 | 0.74 | 48.75 | | | After (BT faster broadband upgrade) | | | | | | Dirty HH5 | 4.31 | 0.95 | 53.13 | Friday | | | 4.47 | 1.03 | 117.25 | Saturday | | | 4.23 | 1.05 | 92.25 | Monday 6am | | Clean HH5 | 4.22 | 0.56 | 60.88 | Monday 9am | | | 4.24 | 0.55 | 45.25 | | | | 4.24 | 0.64 | 36.63 | |

Observations

• Three step process:
  • on premisis replace BT master socket (chip platser, fix previously used faceplate...)
  • nip to cabinet, flip over to fibre
  • return and configure line / Home Hub 5 (HH5)
• "Will take ~3 days for line speed to stabalise"

Notes

• HH4 == BT Home Hub 4
• Dirty: other stuff happening / other devices conected on the network
• Clean: just the test site, all other devices disconnected (easy to do, because the current BT HomeHub4 is just the modem. WiFi and Ethernet networks are through another router).

• Network configuration for Studio:

  BT HomeHub 4 ← → TP Link TL-WDR3600 ← → TP Link Powerline Adapters ← → Studio