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Gradual slowdown

matmonty
Dabbler
Posts: 19
Registered: 18-05-2013

Gradual slowdown

TBB speedtest shows 2.53 Mbps BTW test 11/06 shows 3.17 I have had b4 then 3.98. Why the fall off, this has got worse over 3 mnths. I have also had numerous disconnects over the same period. Ticket No #87967626.
14 REPLIES
Superuser
Superuser
Posts: 10,469
Thanks: 1,928
Fixes: 19
Registered: 22-08-2007

Re: Gradual slowdown

Can you please gather the information requested here - http://community.plus.net/forum/index.php/topic,96155.0.html
Is your phone line quiet - dial 17070 option 2.  Were those speed tests wired or over wireless?
matmonty
Dabbler
Posts: 19
Registered: 18-05-2013

Re: Gradual slowdown

DSL Connection 

Uptime: 1 day, 0:07:02

DSL Type: ITU-T G.992.5

Bandwidth (Up/Down) [kbps/kbps]: 756 / 3.620

Data Transferred (Sent/Received) [MB/MB]: 84,39 / 801,78

Output Power (Up/Down) [dBm]: 12,2 / 19,6

Estimated line speed:
    1.5Mb (Download speed could vary depending on line conditions. Estimates are the maximum speeds that your phone line can support. These speeds are dependent on the package you choose.) - Checked on 2014-06-12 20:28:55
Current line speed:
    3.1 Mb


Line Attenuation (Up/Down) [dB]: 23,5 / 47,5

SN Margin (Up/Down) [dB]: 5,0 / 6,0

System Vendor ID (Local/Remote): TMMB / ----

Chipset Vendor ID (Local/Remote): BDCM / TSTC

Loss of Framing (Local/Remote): 0 / 0

Loss of Signal (Local/Remote): 0 / 0

Loss of Power (Local/Remote): 0 / 0

Loss of Link (Remote): -

Error Seconds (Local/Remote): 40 / 0

FEC Errors (Up/Down): 90.881 / 2.269.853

CRC Errors (Up/Down): 0 / 76

HEC Errors (Up/Down): 0 / 618


matmonty
Dabbler
Posts: 19
Registered: 18-05-2013

Re: Gradual slowdown

Sorry about the format, dont really know what happened there.
Oh and wired, and line quiet. and wrong attachment, right one now attached.
Superuser
Superuser
Posts: 10,469
Thanks: 1,928
Fixes: 19
Registered: 22-08-2007

Re: Gradual slowdown

Is your router plugged into the master socket?
Can you try a new filter.  Synch rate is very low for this line.  If you are in the test socket, you should raise a fault report here - http://faults.plus.net
matmonty
Dabbler
Posts: 19
Registered: 18-05-2013

Re: Gradual slowdown

No test socket, tried three different new filters and made no difference .......if you read the OP, already reported.
Thanks
Superuser
Superuser
Posts: 10,469
Thanks: 1,928
Fixes: 19
Registered: 22-08-2007

Re: Gradual slowdown

Sorry, was a very late post!  What's happening on the ticket?
Plusnet Staff
Plusnet Staff
Posts: 6,346
Thanks: 31
Fixes: 5
Registered: 26-11-2011

Re: Gradual slowdown

The Ticket is with our Faults Team and will be picked up as quickly as they can.
Chris Pettitt
Cloud Environments Engineer
matmonty
Dabbler
Posts: 19
Registered: 18-05-2013

Re: Gradual slowdown

Just done another BTW speedtest and it is getting worse. no reply to ticket #87967626
Plusnet Staff
Plusnet Staff
Posts: 6,346
Thanks: 31
Fixes: 5
Registered: 26-11-2011

Re: Gradual slowdown

This should be picked up today for you.
Please only comment on the Fault Ticket if absolutely necessary.
Chris Pettitt
Cloud Environments Engineer
matmonty
Dabbler
Posts: 19
Registered: 18-05-2013

Re: Gradual slowdown

The Engineer sorted out the problem and my speed increased, and the engineer fitted a new style faceplate. Router stats below
                                  DNS           SNR                 Speed
                                             Down    Up        Down    UP
Tue 08 Jul 2014  17:38:01 32 6.1 5.3      7574   732
Tue 08 Jul 2014  17:39:01 32 6.1 5.2      7574   732
Tue 08 Jul 2014  17:40:01 29 6.1 5.2      7574   732
Tue 08 Jul 2014  17:41:01 30 6.1 5.2       7574   732
Tue 08 Jul 2014  17:43:01 31 6.1 5.3       7574   732
Tue 08 Jul 2014  17:44:01 35 6.1 5.2       7574   732
Tue 08 Jul 2014  17:45:01 30 6.4 5.2       7574   732
Tue 08 Jul 2014  17:46:01 30 6.3 5.3       7574   732
Tue 08 Jul 2014  17:47:01 29 6.1 5.2       7574   732
Tue 08 Jul 2014  17:48:01 30 6.1 5.3       7574   732
Tue 08 Jul 2014  17:49:01 30 6.1 5.2       7574   732
Tue 08 Jul 2014  17:50:01 29 6.3 5.3       7574   732

Which was great because I have never seen such speeds.
Since then it has been on a downward move
These are the router stats from today
Upime: 0 days, 1:38:02    DSL Type: ITU-T G.992.5
   
Bandwidth (Up/Down) [kbps/kbps]: 756 / 5.922
   
Data Transferred (Sent/Received) [MB/GB]: 112,81 / 1,99
 
Output Power (Up/Down) [dBm]: 12,2 / 20,0
   
Line Attenuation (Up/Down) [dB]: 23,7 / 46,0
 
SN Margin (Up/Down) [dB]: 5,7 / 12,6
 
System Vendor ID (Local/Remote): TMMB / ----
 
Chipset Vendor ID (Local/Remote): BDCM / TSTC
   
Loss of Framing (Local/Remote): 18 / 0
 
Loss of Signal (Local/Remote): 2 / 0  
 
Loss of Power (Local/Remote): 0 / 0
 
Error Seconds (Local/Remote): 50 / 0
 
FEC Errors (Up/Down): 3.517 / 616
 
CRC Errors (Up/Down): 6 / 3  
 
HEC Errors (Up/Down): 17 / 106
I also notice the SNR has crept upto  SN Margin (Up/Down) [dB]: 5,7 / 12,6 and thus a reduction in speed
Should this be happening?


Plusnet Staff
Plusnet Staff
Posts: 6,346
Thanks: 31
Fixes: 5
Registered: 26-11-2011

Re: Gradual slowdown

The line still looks a little intermittent. We've got your response on Ticket: 87967626. We'll reply back once we've completed further tested on your line.
Chris Pettitt
Cloud Environments Engineer
matmonty
Dabbler
Posts: 19
Registered: 18-05-2013

Re: Gradual slowdown

The response from ticket No 87967626 does not make sense, that the SNR has increased to 11.8dB because it is appropriate to the distance from the exchange. If that is the case then why did the openreach engineer specifically set it to 6dB and say that I will now get increased speeds. This is now getting silly why cannot the DNS be reduced to 6dB.
matmonty
Dabbler
Posts: 19
Registered: 18-05-2013

Re: Gradual slowdown

Two attachments first one showing speeds after openreach engineer visit with DNS set at 6dB
<a href="http://www.speedtest.net/my-result/3614643091"><img src="http://www.speedtest.net/result/3614643091.png" /></a>
Second taken today with 11.8dB DNS
<a href="http://www.speedtest.net/my-result/3626851680"><img src="http://www.speedtest.net/result/3626851680.png" /></a>
Plusnet Staff
Plusnet Staff
Posts: 6,346
Thanks: 31
Fixes: 5
Registered: 26-11-2011

Re: Gradual slowdown

SNR doesn't specifically work based on distance (I'll feed that back).
If an engineer or Agent sets your SNR Target to 6db, this doesn't mean that your SNR will stay at 6db, the idea of SNR is that it fluctuates given the line conditions. For example, if there is a burst of noise on your line for some reason (say road works) the SNR will increase, this will keep the line stable for the time that the noise is on your line.
SNR adjusts itself to protect your connection from excessively dropping out due to high errors due to noise or other interference on your line. It looks to me that the agent in question has set your line to 'Amber' this means that your SNR Target will not ever move from 6db, however the SNR itself can still fluctuate, however the line will always aim, where possible to give you an sNR of 6db but this isn't guaranteed.
Chris Pettitt
Cloud Environments Engineer