FttC speed has dropped off
Wondering if anyone else has experienced this same issue and were they able to get Plusnet to do anything about it...
For years, I had a stable FTTC internet connection with a DS lync speed around 76000Kbps and an upstream one of 19999Kbps where the upstream and downstream SNR hovered between 5-7 dB. However, about a year ago for no apparent reason whatsoever, my downstream lync speed dropped by almost 10K to 66997Kbps and the SNR has gone up to a consistent 8-9 (no change in the upstream SNR or lync speed). I've tried manually tweaking the SNR delta (-20) but no matter what I do, it still syncs at 8-9 dB.
I raised a ticket with Plusnet about this issue almost a year ago and was told that this should eventually fix itself (DSLAM should kick in). However, it's been more than a year and nothing has changed and so I am wondering if there's anything I can do to get Plusnet or BT to try and get the modem to lync back in the upper 70000KBps range like it did for years and years?
Any help or advice in terms of getting this fixed, or just getting Plusnet to understand and acknowledge the problem would be most appreciated.
For reference, attached below is a readout from the modem/router on the current status of the VSDL connection.... as you can see, the difference between the max attainable and actual DS rate is quite huge and the DS SNR ratio is 9dB -- more than enough to support a stable connection... I am using a Draytek 2860n router with the latest firmware I should add.
---------------------- ATU-R Info (hw: annex A, f/w: annex A/B/C) -----------
Running Mode : 17A State : SHOWTIME
DS Actual Rate : 66997000 bps US Actual Rate : 19999000 bps
DS Attainable Rate : 85463960 bps US Attainable Rate : 20902000 bps
DS Path Mode : Fast US Path Mode : Fast
DS Interleave Depth : 1 US Interleave Depth : 1
NE Current Attenuation : 14 dB Cur SNR Margin : 9 dB
DS actual PSD : 6. 9 dB US actual PSD : 12. 6 dB
NE CRC Count : 0 FE CRC Count : 85264
NE ES Count : 0 FE ES Count : 62324
Xdsl Reset Times : 0 Xdsl Link Times : 5
ITU Version : 00000000 ITU Version : 00000000
VDSL Firmware Version : 05-07-06-0D-01-07 [with Vectoring support]
Power Management Mode : DSL_G997_PMS_L0
Test Mode : DISABLE
-------------------------------- ATU-C Info ---------------------------------
Far Current Attenuation : 20 dB Far SNR Margin : 6 dB
CO ITU Version : b5004244 CO ITU Version : 434da48c
DSLAM CHIPSET VENDOR : < BDCM >
Re: FttC speed has dropped off
01-03-2019 11:57 AM - edited 01-03-2019 11:58 AM
Our tests are showing your line to be banded at 67mbps and we're detecting a potential cable fault on the line which would likely be causing this. I've reported this through to Openreach and we've been given an estimated response time of by 05/03/19 23:59:59 for an engineer to go out and investigate further.
Let us know how your speeds look over the next few days.
For visibility I've attached the test results below if you're interested:
|Test Outcome Code||GTC_FTTC_SERVICE_0000|
|Description||GEA service test completed and no fault found .|
|Main Fault Location||OK|
|Sync Status||In Sync|
|Downstream Speed||66.9 Mbps|
|Upstream Speed||20.0 Mbps|
|Fault Target Fix Time|
|Fault Report Advised||N|
|Estimated Line Length In Metres||410.7|
|Upstream Rate Assessment||Very Good|
|Downstream Rate Assessment||Reasonable|
|Interference Pattern||Not Detected|
|Service Impact||No Impact Observed|
|Home Wiring Problem||Not Detected|
|Downstream Policing Discard Rate||0.0|
|Customer Traffic Level||Upstream and Downstream Traffic Detected|
|NTE Power Status||PowerOn|
|Voice Line Test Result||Voice fault suspected - contact Voice CP to progress copper issue|
|Bridge Tap||Not Detected|
|Radio Frequency Ingress|
|Repetitive Electrical Impulse Noise||Not Detected|
|Profile Name||0.128M-67M Downstream, Retransmission Low - 0.128M-20M Upstream, Error Protection Off|
|Down Stream Line Rate||66.9 Mbps||66.9 Mbps||66.9 Mbps|
|Up Stream Line Rate||19.9 Mbps||19.9 Mbps||19.9 Mbps|
|Up Time||899.0 Sec||900.0 Sec||899.9 Sec|
|Current and Last 15 Minute Bin Performance|
|Parameters||Last Traffic Count(Upto 15 mins)||Current Traffic Count(Upto 15 mins)|
|Start Time Stamp||2019-03-01T11:25:57Z||2019-03-01T11:40:57Z|
|Ingress Code Violation||0||0|
|Egress Code Violation||0||0|
|Severely Errored Seconds||0||0|
Re: FttC speed has dropped off
Thanks Gandalf. Appreciate you looking into the issue and acknowledging that something may actually be wrong rather than giving me the standard DSLAM "wait and see if it improves" or "your speeds are within the expected range" response...
I will definitely keep my eye on the speeds and let you know if I see any change.