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[james]

I tested recently by swapping the MK1 SSFP to a MK2 resulting in the downstream SNRM increasing from 6.4 to 6.6 but the upstream SNRM decreased from 9.4 to 8.7.

Has anyone else seen a drop in the upstream SNRM after swapping to a MK2?

EDIT: Seems it wasn't the MK2 causing the upstream SNRM to drop to 8.7. I did xdslcmd connection --down and then --up and it's now back to the usual 9.4.

[Chrysalis]

my connection been down for about 4 hours now, I plugged in the vdsl mk2 faceplate although the issue isnt my sync its the PPPoE connection, the sync rate is about 1mbit down (to be expected I guess as my snrm was going lower).  80 crc errors on downstream in 3 hours.  Prior to the change been averaging over 600-1000 day which would be approx 33 hour, conclusion? not much difference.

I havent rang BT yet regarding the pppoe outage as I was hoping it would come back up itself, but I guess I need to deal with their call centre

3g tethering currently.

[gouledw]

The MK2 are being brought out as with anything technology improves.  However always some people will find an improvement and some people will not. I carry these as I fit them on all the fibre jobs I do, however I do occassionally fit them on ADSL jobs, and 9 times out of 10 they'll make a difference, not usually a huge one but a small one.  Noticeable more on a long line.  They're stabilioty against Impulse Noise Bursts is markedly better to the older version.

[Chrysalis]

BT fixed my PPP during the night (their tech support a nightmare tho nearly 2 hours on phone to them telling them to raise fault instead of asking me to reboot router), it was very easily a BT side issue as well since their status page said a fault in my area started 2.54pm but fixed 20 mins later, except mine started 2.54pm but was ongoing, yet the guy in india couldnt put 2 and 2 together and insisted following numerous scripts.  Rant over.

Todays stats shine a slightly different light on the MK2 affect on my line.

Now the downstream CRC rate is not that far off the upstream rate although I do have an extra 1db snrm which will affect it a bit. At 16 hours and half have 241 CRC errors down and 174 CRC errors up.

[Ragnarok]

I tested recently by swapping the MK1 SSFP to a MK2 resulting in the downstream SNRM increasing from 6.4 to 6.6 but the upstream SNRM decreased from 9.4 to 8.7.

Has anyone else seen a drop in the upstream SNRM after swapping to a MK2?

got a MK2 VDSL plate to replace my mk1, I do have impulse/REIN noise coming from next door almost whenever they are in, the sync speed gets impacted only slightly on FTTC but real bad on ADSL2+ upto 8mbit/s downstream.

my upstream is slightly impacted at first glance, maybe 0.1 db down but it's roughly the same.

However my downstream SNRM actually went up 0.4db over 6db, the sync speed went up nearly 2mbit's. most importantly all FEC errors down significantly ( by a factor of 100 ) the other errors after the first hour of installation seem to have gone from a few to zero.


Seems that this MK2 filter does work better on impulse noise/REIN impacted lines, then again by the design of it thats what it's supposed to do. It' should be very similar to the mk1 otherwise.

[Ixel]

Installed a MK2 faceplate this morning, so far it has nudged my downstream speed up by another megabit or so.

Current Results:
Max:   Upstream rate = 29547 Kbps, Downstream rate = 100780 Kbps
Bearer:   0, Upstream rate = 20000 Kbps, Downstream rate = 68999 Kbps

The attainable rate hardly changes for me no matter what time of day it is, a variance of at most 500-750Kbps on the downstream and upstream. I'll update after 24 hours or so once I have sufficient statistics to know whether or not it has reduced my errored seconds and/or CRC's. My sync rate is deliberately 68999 because I've done 'xdslcmd configure --maxDataRate 69000 20000 89000' to see if I can do what I did over a year ago (stick DLM into a banding state with no interleaving applied, at the moment I'm interleaved at INP 3 with delay 8).

[adslmax]

Are these MK2 the same as ADSLNation faceplate http://www.adslnation.com/products/xte2005.php

[burakkucat]

Are these MK2 the same as ADSLNation faceplate http://www.adslnation.com/products/xte2005.php

No, Max, they are not. 

[adslmax]

ok just order genuine mk2 from ebay £12.49 inc P&P.
eBay item number:
321293245028

[burakkucat]

ok just order genuine mk2 from ebay £12.49 inc P&P.
eBay item number:
321293245028

Right, that seems to be around the average "going price" once the P&P has been included. 

Perhaps you will let us know of your experience, once it has been installed for (say) a week?

[Ixel]

ok just order genuine mk2 from ebay £12.49 inc P&P.
eBay item number:
321293245028

Mine was a bit cheaper on eBay, though seems genuine and has so far made a difference (will post error stats tomorrow when 24 hours are up). It was £4.99 + £3.00 postage (first class). Assuming forum rules permit, I'll post eBay link if requested.

[Ixel]

Just an update to say that it appears my errored seconds have dropped by around 50 to 60 percent compared to the usual amount I had on the original faceplate (MK1?).

[adslmax]

Before on adslnation faceplate:

sync: 17559k snr: 3.1dB line att: 30.5dB CRC errors (24 hours): 1077

New on openreach mk2 faceplate:

sync: 17615k snr: 3.1dB line att: 30.5dB CRC errors (24 hours): 15

Much improvement! ;



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[burakkucat]

A good result, Max. 

[Darren]

Not sure if they can be trusted but a user on BTs forum claims the MK2s have a small issue:

"Id hold off getting one of these untill they have fixed the rein filter issues..."
"Doesnt cause any issues. Its just not very effective and a new revision is being implemented to bring it up to standard."

https://community.bt.com/t5/BT-Infinity-Speed-Connection/VDSL-MK2-front-plate-avalibility/m-p/1131516#M122564