Unbelievable drop in download speeds
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- Re: Unbelievable drop in download speeds
Unbelievable drop in download speeds
31-05-2011 4:59 PM
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The current BT download speed seems untrue! Namesco test tells me that we are getting a download speed of 1.95 MBps, which is still terrible compared to a month ago when I was seeing download speeds approaching 7Mbps.What is going on?
If anyone from Plusnet sees this post , please respond! Getting a bit fed up now.
DSL Connection 25.04.11
Link Information
Uptime: 3 days, 12:10:17
DSL Type: G.992.5 annex A
Bandwidth (Up/Down) [kbps/kbps]: 444 / 8,852
Data Transferred (Sent/Received) [kB/kB]: 0.00 / 20.00
Output Power (Up/Down) [dBm]: 13.0 / 0.0
Line Attenuation (Up/Down) [dB]: 23.0 / 41.5
SN Margin (Up/Down) [dB]: 23.0 / 7.5
Vendor ID (Local/Remote): TMMB / IFTN
Loss of Framing (Local/Remote): 45 / 0
Loss of Signal (Local/Remote): 4 / 0
Loss of Power (Local/Remote): 0 / 0
Loss of Link (Remote): 0
Error Seconds (Local/Remote): 709 / 0
FEC Errors (Up/Down): 0 / 4,581,410
CRC Errors (Up/Down): 0 / 23,628
HEC Errors (Up/Down): 0 / 20,835
DSL Connection 31.05.2011
Link Information
Uptime: 2 days, 9:22:06
DSL Type: G.992.5 annex A
Bandwidth (Up/Down) [kbps/kbps]: 443 / 2,359
Data Transferred (Sent/Received) [kB/kB]: 0.00 / 0.00
Output Power (Up/Down) [dBm]: 12.5 / 0.0
Line Attenuation (Up/Down) [dB]: 23.0 / 41.5
SN Margin (Up/Down) [dB]: 25.5 / 21.0
Vendor ID (Local/Remote): TMMB / IFTN
Loss of Framing (Local/Remote): 22 / 0
Loss of Signal (Local/Remote): 25 / 0
Loss of Power (Local/Remote): 0 / 0
Loss of Link (Remote): 0
Error Seconds (Local/Remote): 347 / 0
FEC Errors (Up/Down): NA / 0
CRC Errors (Up/Down): NA / 1,324
HEC Errors (Up/Down): 0 / 968
BT test 16.30 31.05.2011
Download speed achieved during the test was - 1049 Kbps
For your connection, the acceptable range of speeds is 800-2000 Kbps.
Additional Information:
Your DSL Connection Rate :2359 Kbps(DOWN-STREAM), 443 Kbps(UP-STREAM)
IP Profile for your line is - 2000 Kbps
The throughput of Best Efforts (BE) classes achieved during the test is - 5.95:21.93:72.21 (SBE:NBE:PBE)
These figures represent the ratio while sententiously passing Sub BE, Normal BE and Priority BE marked traffic.
The results of this test will vary depending on the way your ISP has decided to use these traffic classes.
2. Upstream Test: -provides background information.
Upload Speed
355 Kbps
kentmere
Re: Unbelievable drop in download speeds
01-06-2011 12:23 AM
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Have you tried restarting the router during the day? If the line noise problem has gone away that should restore your sync speed unless the DLM has increased your target noise margin for connection stability reasons. Posting your router stats again following the restart will give a better idea of what is happening.
Note that speed tests will not show any change immediately - your IP Profile needs to increase first which will take 2-3 days.
Re: Unbelievable drop in download speeds
01-06-2011 9:51 AM
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Your SNR is quite high; that won't help. How is your kit set up? Are you using any extension cables/sockets?
Jojo
Re: Unbelievable drop in download speeds
01-06-2011 4:44 PM
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Current router data still the same after 3.5days. I will leave it a bit longer and then do a test into the master socket to see if it is the extension connection.
Re: Unbelievable drop in download speeds
02-06-2011 12:51 PM
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If you could plug your router into the test socket behind the master socket faceplate I'll be able to get a better idea of what's going on.
Jojo
Re: Unbelievable drop in download speeds
02-06-2011 2:40 PM
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Quote from: Joanne If you could plug your router into the test socket behind the master socket faceplate
... using a normal length lead and not an extension!
jelv (a.k.a Spoon Whittler) Why I have left Plusnet (warning: long post!) Broadband: Andrews & Arnold Home::1 (FTTC 80/20) Line rental: Pulse 8 Home Line Rental (£14.40/month) Mobile: iD mobile (£4/month) |
Re: Unbelievable drop in download speeds
02-06-2011 5:26 PM
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See below for data from router on the extension this afternoon, about 4.30pm.
DSL Connection 02.06.2011
Link Information
Uptime: 0 days, 8:07:33
DSL Type: G.992.3 annex A
Bandwidth (Up/Down) [kbps/kbps]: 443 / 5,587
Data Transferred (Sent/Received) [kB/kB]: 0.00 / 0.00
Output Power (Up/Down) [dBm]: 13.0 / 0.0
Line Attenuation (Up/Down) [dB]: 23.0 / 38.5
SN Margin (Up/Down) [dB]: 24.5 / 9.5
Vendor ID (Local/Remote): TMMB / IFTN
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): 0
Error Seconds (Local/Remote): 29 / 0
FEC Errors (Up/Down): NA / 0
CRC Errors (Up/Down): NA / 1,103
HEC Errors (Up/Down): 0 / 932
http://www.pingtest.net/result/41398622.png - basically says excellent quality line, no packet loss and minimal jitter
http://www.speedtest.net/result/1323498597.png - again, download about 1..9Mbps.
So, things are improving. Maybe the extension connection in the box had got damaged. Doesn't seem to be a problem now. I guess that I will have to wait for the download speed to adjust. Is there any thing else that can be done to get me back to our previous excellent performance.?
Re: Unbelievable drop in download speeds
03-06-2011 9:19 AM
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I see your profile is up to 4500.
Quote from: kentmere Is there any thing else that can be done to get me back to our previous excellent performance.?
See what sync rate you get just plugging into the test socket behind the master socket faceplate.
Jojo
Re: Unbelievable drop in download speeds
03-06-2011 11:34 PM
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DSL Connection Test socket 22.35pm; 03.06.2011
Link Information
Uptime: 0 days, 2:25:44
DSL Type: G.992.3 annex A
Bandwidth (Up/Down) [kbps/kbps]: 443 / 5,143
Data Transferred (Sent/Received) [kB/kB]: 0.00 / 0.00
Output Power (Up/Down) [dBm]: 12.5 / 0.0
Line Attenuation (Up/Down) [dB]: 23.0 / 38.5
SN Margin (Up/Down) [dB]: 24.0 / 8.0
Vendor ID (Local/Remote): TMMB / IFTN
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): 0
Error Seconds (Local/Remote): 1 / 0
FEC Errors (Up/Down): 0 / 0
CRC Errors (Up/Down): 0 / 244
HEC Errors (Up/Down): 0 / 194
Download speed 4219; upload 362
DSL Connection 23.12pm Extension connection 03.06.2011
Link Information
Uptime: 0 days, 0:03:30
DSL Type: G.992.3 annex A
Bandwidth (Up/Down) [kbps/kbps]: 443 / 4,887
Data Transferred (Sent/Received) [kB/kB]: 0.00 / 0.00
Output Power (Up/Down) [dBm]: 13.0 / 0.0
Line Attenuation (Up/Down) [dB]: 23.5 / 39.0
SN Margin (Up/Down) [dB]: 24.0 / 9.0
Vendor ID (Local/Remote): TMMB / IFTN
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): 0
Error Seconds (Local/Remote): 0 / 0
FEC Errors (Up/Down): 0 / 0
CRC Errors (Up/Down): 0 / 16
HEC Errors (Up/Down): 0 / 15
Download speed 4207 upload 357
Before I started this series of tests, data for the extension connection were:
DSL Connection 19.41, June 3, 2011 (PC Extension connection)
Link Information
Uptime: 0 days, 13:08:52
DSL Type: G.992.3 annex A
Bandwidth (Up/Down) [kbps/kbps]: 443 / 5,383
Data Transferred (Sent/Received) [kB/kB]: 0.00 / 0.00
Output Power (Up/Down) [dBm]: 13.0 / 0.0
Line Attenuation (Up/Down) [dB]: 23.0 / 38.5
SN Margin (Up/Down) [dB]: 22.0 / 9.5
Vendor ID (Local/Remote): TMMB / IFTN
Loss of Framing (Local/Remote): 0 / 0
Loss of Signal (Local/Remote): 3 / 0
Loss of Power (Local/Remote): 0 / 0
Loss of Link (Remote): 0
Error Seconds (Local/Remote): 100 / 0
FEC Errors (Up/Down): NA / 0
CRC Errors (Up/Down): NA / 1,954
HEC Errors (Up/Down): 0 / 1,557
These all seem broadly similar, implying that the extension is not the cause of our recent difficulties, which started as I said earlier, when the BT guy disconnected us for about a minute. If you have another look at the router data before the problems, you can see that there is a tremendous difference ie we were syncing at 8852 on a stable G 992.5 annexe A connection, and interleaving was on. Now we are on G 992.3 annexe A and interleaving seems to have been turned off.
Over to you !!
Thanks
Kentmere
Re: Unbelievable drop in download speeds
06-06-2011 10:51 AM
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Have you tried a different filter or even a different RJ11 cable?
Jojo
Re: Unbelievable drop in download speeds
06-06-2011 4:18 PM
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The recent test socket measurement was done with a different cable. The filter is the same one that has been in place for over a year but I will try a different filter tomorrow, during daylight hours to try to avoid problems with the BT DML system. How long should I leave the system down before re-connecting, in order to avoid problems? Up to now, I have always allowed 30 mins.
Kentmere
Re: Unbelievable drop in download speeds
07-06-2011 10:59 AM
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30 seconds will be fine.
Jojo
Re: Unbelievable drop in download speeds
07-06-2011 3:22 PM
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As suggested, replaced RJ11 cable and filter. I am pleased to say that the sync speed has now gone up from 5419 to 6000, and the connection is back to G 992.5 Annexe A. See below:
DSL Connection 06.06.2011 (after replacing RJ11 and filter)
Link Information
Uptime: 0 days, 0:02:18
DSL Type: G.992.5 annex A
Bandwidth (Up/Down) [kbps/kbps]: 443 / 6,003
Data Transferred (Sent/Received) [kB/kB]: 0.00 / 0.00
Output Power (Up/Down) [dBm]: 13.0 / 0.0
Line Attenuation (Up/Down) [dB]: 23.5 / 42.0
SN Margin (Up/Down) [dB]: 23.5 / 9.5
Vendor ID (Local/Remote): TMMB / IFTN
Loss of Framing (Local/Remote): 11 / 0
Loss of Signal (Local/Remote): 44 / 0
Loss of Power (Local/Remote): 0 / 0
Loss of Link (Remote): 0
Error Seconds (Local/Remote): 146 / 0
FEC Errors (Up/Down): NA / 0
CRC Errors (Up/Down): NA / 1
HEC Errors (Up/Down): 0 / 1
So, it now looks as though we are moving slowly back to where we were. It still seems that interleaving is off. It was on at the time that we got the best data at the end of April - see the first of my posts.
Anyway, thanks for your replies and comments. I will keep things under review and get back if things go downhill again.
Kentmere
Re: Unbelievable drop in download speeds
07-06-2011 5:02 PM
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Always here so give us a shout if you need more assistance.
Jojo
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