BT insist my line isn't capped

If anyone has been following my saga from last week:

here

Then I have an update.

BT booked an engineer for next week for me to do the DLM reset to remove the capping. I have just received a call to say an engineer has the the reset. However, despite a resync, nothing has changed but BT insist the cap is reoved and have cancelled the engineer visit for next week.

To me, the sync at 55000KBps and 17000Kbps indicate it is still capped:

Mode VDSL2
Traffic Type PTM
Status Up
Link Power State L0
Downstream Upstream
Line Coding (Trellis) On On
SNR Margin (dB) 7.7 7.2
Attenuation (dB) 19.1 0.0
Output Power (dBm) 12.6 7.5
Attainable Rate (Kbps) 61566 19317
Rate (Kbps) 54999 17000
B (# of bytes in Mux Data Frame) 227 163
M (# of Mux Data Frames in an RS codeword) 1 1
T (# of Mux Data Frames in an OH sub-frame) 0 0
R (# of redundancy bytes in the RS codeword) 12 12
S (# of data symbols over which the RS code word spans) 0.1319 0.3047
L (# of bits transmitted in each data symbol) 14562 4621
D (interleaver depth) 4 2
I (interleaver block size in bytes) 240 176
N (RS codeword size) 240 176
Delay (msec) 0 0
INP (DMT symbol) 54.00 55.00
OH Frames 0 0
OH Frame Errors 4092 119
RS Words 24598636 2110867
RS Correctable Errors 51 0
RS Uncorrectable Errors 0 0
HEC Errors 0 0
OCD Errors 0 0
LCD Errors 0 0
Total Cells 86200643 0
Data Cells 17643 0
Bit Errors 0 0
Total ES 102 73
Total SES 74 9
Total UAS 71

Is there anything more I can do? They insist that as it's connected at 55Mbps and that is my estimated speed (even though before the fault and for 2 yrs I've been sync'd at 64ish) then there is nothing more she can do.

Is the line still banded?

Looks banded, however, they're right in that if you're within the estimated range they don't have to send out an engineer.

Would you really see the difference in 4 or 5meg? Unlikely.

It's just really annoying - a few days before fault surfaced, my snr dropped to 5 and then 4 and my sync had gone up to 68Mbps.

Now it's capped, with an snr of 7.

So my only option now is to wait, leave modem alone and hope that banding is removed by DLM - is that about it?

leave modem alone and hope that banding is removed by DLM - is that about it?

Yes

Bingo.

In reply to a post by WelshWArrior:

So my only option now is to wait, leave modem alone and hope that banding is removed by DLM - is that about it?

... which could take many months. I've been banded pretty much forever now; fortunately it's so close to my max attainable that it doesn't really matter at the moment.

Argue your case. Point out only an engineer can reset the DLM and you've continuously been lied to and told it's been reset.

It may only be a few mb at the moment, but by the time u add the gains from 3dB SNRM target then you're missing more like 15mb. It came from a genuine fault that you reported, and they should reset the DLM after fixing a fault within their network.

In reply to a post by MrSaffron:

leave modem alone and hope that banding is removed by DLM

<moan>
Words like *hope* shouldn't be used in this day & age. The platform should be such that either the ISP's can have control back (like they do with exchange based deployments) or OR should just do what is asked of them (maybe with a nominal fee of £1)

I've got sites & customers who would *love* to be on an FTTC service (me included) but they can't due to the fact DLM can not be tamed and they might find themselves on max interleaving one day, or a banded line at 20mbit which may or may not ever reset its self at some point if the DLM feels like it and nothing external happens...

We don't really need DLM - just let the line run at its max rate & if they fail then that's a *network* issue that the network provider should be resolving. Not punishing the EU.

I realise the EU may rather have some service (banded, interleaved or whatever) but its simply masks the faults and issues of a life expired network being used to deliver the DSL.

</end moan>

So those who don't like DLM, what sort of connection are they using in the meantime.

DLM needed or not is another debate.

They are all still stuck on ADSL2+ (mostly) some of which have specific DLM settings to work-round dodgy line plant which means there lines don't get banded every time it rains and no jumping to interleaved then getting stuck. They suffer a few disconnections and a bit of packet loss from time to time but they see that as far better and more stable than any of the FTTC offerings so far. (Some places had lines on test and had nothing but trouble, other places are stuck as EO fed.

At least one defected to virgin media - and after some initial troubles seems to be ok with the service.

Edited by IamQ (Wed 12-Apr-17 18:37:58)