Moved from Plusnet to Zen and lost ~10Mb off my max rate.

So I switched from Plusnet to Zen yesterday and lost a lot off my sync and download rates.

Long story short despite syncing at full speed with PN I was only getting around 68Mb down rather than the 75Mb I should be. (max rate of 77Mb) and assumed it was them having the issues given the recent goings on with them of late.

I'm a bit miffed as I've always been at full sync, with a line length of ~150m.

Do these stat from the router tell you anything? Before the switch my sync with Plusnet was ~75000 and the max rate was ~77000. My upload has not changed at all.

Text
1 23 45 67 89 10	Line Status:  Connected DSL Modulation Type:  VDSL2Annex Type:  Annex A                        Upstream  Downstream Current Rate(kbps)      19999   70338Max Rate(kbps)          28030   70342 SNR Margin(dB)          15.4    6.2Line Attenuation(dB)    10.9    6.3 Errors(pkts)            220     461

Could it be something as simple as crosstalk? Or maybe REIN? It just seems odd that al that has changed is the username and password from the ISP to connect to the new service.


I can't do a test on the BTW site to check my IP Profile as it just say this:

"The Performance Tester is currently unable to run a speed test for your broadband connection. Please try again shortly, however if this problem persists, raise the issue with your service provider."

I've raised this with Zen.


Any thoughts and advice would be great as I'm not as clued up on all this as you guys surely will be.

Ta!

Interestingly I seem to be getting way more packetloss from Zen than PN according to my BQM. Could this be a clue?

PN:
http://www.thinkbroadband.com/ping/share/ba92d94f8a4...

Zen:
http://www.thinkbroadband.com/ping/share/b9b5bbe7196...

Have you also moved your line rental to Zen?

If so, does this checker still recognise your phone number?

Which exchange are you on please?

No, line rental was and is with BT.

Yes it does:

Text
1 2	VDSL Range A (Clean)    80      72.4    20      20 VDSL Range B (Impacted) 80      59.3    20      18.2

Edited by Cruncher (Thu 24-Nov-16 13:43:27)

I have noticed that any product reset/move between ISPs causes G.INP to be disabled on the line, temporarily, because DLM will be re-training. This will reduce your highest attainable sync rate slightly. Give it a few days (maybe a couple of weeks), this should be re-enabled, at which point your sync will jump back up.

Edited by deleted (Thu 24-Nov-16 12:08:36)

Is that right? As I had someone from Zen yesterday say 'there is no 10 day training on fibre', then today the chap I spoke to said there was. So I don't know what to believe anymore lol.

I would have expected higher going by your line attenuation.

Here's mine on PlusNet for comparison

6. Data rate: 19999 / 79903
7. Maximum data rate:31744 / 95177
8. Noise margin:14.9 / 10.1
9. Line attenuation:11.5 / 11.5
10. Signal attenuation:11.4 / 11.5

Whats your line length out of interest?


EDIT:

I've just check again, here are my stats now:

Text
1 23 45 67 89 10	Line Status:  Connected DSL Modulation Type:  VDSL2Annex Type:  Annex A  Upstream        Downstream Current Rate(kbps)      19999   68487Max Rate(kbps)          29327   71136 SNR Margin(dB)          16.4    6.7Line Attenuation(dB)    11      6.6 Errors(pkts)            556     21414

Those errors look bad?

Edited by Cruncher (Thu 24-Nov-16 12:26:24)

This is what I have observed, having gone through 2 ISP moves and 1 product move (a downgrade, whilst with Zen - 80/20 -> 40/10, a year and half ago). Also, you are currently at 6 dB SNR. This is the lowest value the DLM will set your line at currently, but as has already mentioned in other posts, this figure will be lowering to 5, 4 and 3 dB values in March next year, automatically determined by the DLM, depending on how stable your line is.

But for now, I reckon @ 6 dB SNR, once G.INP is back on, you will regain the 10 Mb you've lost (G.INP allows for a higher sync rate with the same SNR margin).

Edited by deleted (Thu 24-Nov-16 12:24:05)

I don't know the line length but the cabinet is only 175m away (as the crow flies) with a block of flats between me and it.