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[roseway]

Look what happened yesterday. There were Openreach vans in our road, including one parked for a couple of hours in a neighbour's drive. Later in the evening...

I presume this is crosstalk, although the timing is a bit odd. My connection didn't resync, it just lost about 2 dB SNRM on both upstream and downstream, and this has had a big impact on my max attainable speeds (I've lost about 9 Mbps on the downstream attainable).

[peterj]

I had a similar abrupt drop in May. Sync went down from 47 to 39 in one go and other than a bit of a gain moving to G.Inp it never recovered. If it is cross talk I imagine you will suffer a similar speed loss when your line next resyncs 

[tbailey2]

Look what happened yesterday. There were Openreach vans in our road, including one parked for a couple of hours in a neighbour's drive. Later in the evening...

I presume this is crosstalk, although the timing is a bit odd. My connection didn't resync, it just lost about 2 dB SNRM on both upstream and downstream, and this has had a big impact on my max attainable speeds (I've lost about 9 Mbps on the downstream attainable).

Matter of interest, what is your actual d/l speed currently vs attainable? Looks same as what happened to me and many others when a neighbour gets fibre.... Your FECs are quite a lot higher since so there is certainly extra noise around...

Attached is an MDWS comparison of your Bits/Tone as it is now (at top) and as it was couple of hours before the 'happening'...

[roseway]

These are my current attainable and actual speeds:

Code: [Select]

Max: Upstream rate = 25467 Kbps, Downstream rate = 68220 Kbps
Bearer: 0, Upstream rate = 19999 Kbps, Downstream rate = 77421 Kbps

[tbailey2]

Yes, that's there originally - but I just wondered what is your ACTUAL download speed via a speedtest vs what it says it is....

[roseway]

The actual connection speed is given above. Speedtests vary of course and tell you more about routing conditions and the quality of the test server than the state of the connection. But if you want some examples:,

speedof.me
Downstream: 77.61 Mbps
Upstream: 17.68 Mbps

speedtest.net
Downstream: 70.44 Mbps
Upstream: 17.11 Mbps

[les-70]

   That almost exactly what next door does to me.  I confirm that it is shock when you first see this!

[NewtronStar]

All you can do is try and hang onto current sync rate with an Snrm of 3.8dB yet don't see any error's coming from the downstream if this is crosstalk but it does looks like it.

[garypower]

Crosstalk is a killer - graph shows the difference for a week when my next door neighbour went on holiday... shame is they came back a week later!

vectoring can not come quick enough!

[Chrysalis]

sudden drops I reckon most likely cause is crosstalk aka new line turned on.

The time of day is a bit late but given its summer and you seen the vans, it would all fit.

I remember when sky installed my dish at 10pm one night.  They did come abit earlier but was a power cut so came back late to finish it off.

[kitz]

Unfortunately it does look remarkably like crosstalk.   I found that the early ones took the most away, but there still the odd one or two that are at about 5Mb from last year.

Like you say though the timing is strange.  I wonder if they perhaps didnt turn on their router until later at night.   

There's one way that you can check if it is cross-talk and thats ask them to turn their router off and back on again and you will get the shape just like on garypowers graph.   I saw similar when the people across the road when on holiday. 

Also expect to see blips like this when they reboot their modem.

[roseway]

Unfortunately I don't know these particular people well enough to ask favours of them, but thanks for the suggestion.

[AArdvark]

@roseway

A perfect opportunity to introduce yourself ! 

Nip over with a bottle of wine and a set of screwdrivers ! 

I am sure they won't mind. 

[roseway]

[Bald_Eagle1]

Crosstalk is a killer - graph shows the difference for a week when my next door neighbour went on holiday... shame is they came back a week later!

vectoring can not come quick enough!

I see you got a nice increase in sync speed during that 'golden' period, but SNRM is quite low now, so I suspect it won't be too long before 'normal' sync speed resumes (Unless G.INP now allows it to hang on at 60Mbps as your DS error counts are generally pretty low).