Firstly... thank you for this site and forum, I've learned a lot, and already taken steps to improve my FTTC speed and collect better data about what is going on...
So... I have recently moved from the city with the choice of both FTTC and cable, to "the sticks", and am trying to make my BT FTTC line perform somewhere near the BT DSL checker prediction:
VDSL Range A (Clean) 32.1 20 6.7 4.3 16.5
VDSL Range B (Impacted) 31.2 17.3 6.6 4 13.1
Here's the actuals:
Max Observed Downstream Speed (Mbps) 25.42
Max Upstream Observed Speed (Mbps) 2.38
I've had the line live since last Friday. Previously it was only ever used for ADSL. Since installation, downstream has slowly risen from 20Mbps, I can manage with where it is now.... However, I could do with a couple of megs more upstream as I work from home including videoconferencing frequently.
The physical environment is 1 to 1.4km to the cabinet (I'm not quite sure of the route) which is a mix of underground and overhead, the DP is on a pole around 50m away, from there my drop wire runs through some trees, is attached to an electricity pole, then goes through another set of tree branches, before reaching the eaves of my house. There's a crappy small brown plastic BT box on the wall by the eaves, then about 20m of what looks like quite new drop wire, with a new OR master socket and MK4 faceplate. No extension wiring connected. I think I have a spare pair on the drop from the DP. Modem is now a HG612 (based on the recommendations here), and the router is an Ubiquiti ER-X.
DSLstats results below and graphs here
https://imgur.com/a/pfRNI2i. (note the ES graph covers more than the period I have been monitoring so far - there's always some error seconds on the upstream while I've been monitoring, and it seems to be typically 20 ES/hour)
xdslcmd info --stats
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Last initialization procedure status: 0
Max: Upstream rate = 2348 Kbps, Downstream rate = 24884 Kbps
Bearer: 0, Upstream rate = 2389 Kbps, Downstream rate = 25420 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Link Power State: L0
Mode: VDSL2 Annex B
VDSL2 Profile: Profile 17a
TPS-TC: PTM Mode(0x0)
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 6.1 5.8
Attn(dB): 26.0 0.0
Pwr(dBm): 11.3 7.3
xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Last initialization procedure status: 0
Max: Upstream rate = 2358 Kbps, Downstream rate = 24752 Kbps
Bearer: 0, Upstream rate = 2389 Kbps, Downstream rate = 25420 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Discovery Phase (Initial) Band Plan
US: (7,32) (871,1205) (1972,2782)
DS: (33,859) (1216,1961) (2793,3959)
Medley Phase (Final) Band Plan
US: (7,32) (871,1205)
DS: (33,859) (1216,1606)
VDSL Port Details Upstream Downstream
Attainable Net Data Rate: 2358 kbps 24752 kbps
Actual Aggregate Tx Power: 7.3 dBm 11.3 dBm
====================================================================================
VDSL Band Status U0 U1 U2 U3 U4 D1 D2 D3
Line Attenuation(dB): 11.5 60.1 75.7 N/A N/A 23.2 73.0 N/A
Signal Attenuation(dB): 11.5 59.6 N/A N/A N/A 37.9 73.5 N/A
SNR Margin(dB): 5.9 6.0 N/A N/A N/A 5.9 6.0 N/A
TX Power(dBm): 0.7 6.1 N/A N/A N/A 10.2 5.0 N/A
I am guessing U2 is just bad enough that I can't get the additional upstream band to give me that bit more upload speed?
Would there be any mileage in getting OpenReach out? Ideas I have
- try the other pair on the drop wire, or a different pair back to the cabinet
- re-route the drop wire so it doesn't go through trees - there is a direct route from the pole that avoids the trees, it would overhang a neighbours garden though which might not make me popular :-)
- get them to rejoint in the little brown box on my wall
Any other thoughts much appreciated! (or if you would like any more data please shout)
Many thanks!