Speed for country folk
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- Re: Speed for country folk
Speed for country folk
25-07-2011 10:51 AM
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my usual strategy for any computer, software and network problems is five minutes on Google then twenty minutes as a guest on somebodies forum.
Since joining PN I find being a full member of a forum a bit difficult because by not asking the correct question people answer the question they would prefer you had asked!
anyway here goes
I am at the end of the line on an out of town connection and with my previous ISP I accepted for five years or more much less than 1 mbps, in fact I was pleased to have any broadband. Usually any telephone sales person did a test and then said that broadband was not available in my postcode. Evenually i found a ISP wiling to take me on and stayed with them for more than 5 years.
Recently i joined PN and was impressed by the openness over the issue of line speed and now i now a lot more than I did. I initially was very pleased with 1.5Mbps, until recently I had a couple of incidents and was twice dropped back down to 300 Kbps. Last time the PS team took me thorough the normal procedure and I was returned back to 1.5 Mdps. On reflection the only change was switching on interleaving and I think the problem cured itself. I had had the same problem previously and had 1.5 Mbps without between the two fixes.
This is my current stats
DSL Connection
Link Information
Uptime: 5 days, 16:21:31
DSL Type: G.992.1 annex A
Channel mode: Interleave
Maximum Bandwidth (Up/Down) [kbps/kbps]: 952 / 2,016
Bandwidth (Up/Down) [kbps/kbps]: 448 / 1,888
Data Transferred (Sent/Received) [kB/GB]: 0.00 / 3.92
Output Power (Up/Down) [dBm]: 12.0 / 17.5
Line Attenuation (Up/Down) [dB]: 24.0 / 44.0
SN Margin (Up/Down) [dB]: 21.0 / 15.0
Vendor ID (Local/Remote): TMMB / TSTC
Loss of Framing (Local/Remote): 34 / 0
Loss of Signal (Local/Remote): 65,539 / 0
Loss of Power (Local/Remote): 0 / 0
Loss of Link (Remote): 0
Error Seconds (Local/Remote): 196,608 / 0
FEC Errors (Up/Down): 10 / 60,135
CRC Errors (Up/Down): 13 / 904
HEC Errors (Up/Down): 4 / NA
The question is if I have an undiagnosed problem on the line will it cause the system to set my profile too low? is 1.5 Mbps all that I can expect or is ther more tweaks thay can be applied?
To be is to do - Kant
do be do be do - Sinatra
Re: Speed for country folk
25-07-2011 11:01 AM
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Quote from: PeterLoftus Line Attenuation (Up/Down) [dB]: 24.0 / 44.0
This part indicates that you should be able to sync with the exchange at a theoretical maximum of 6112Kbps, for an IP Profile of 5000, giving you around 4.6Mbps down speed. However.....
Quote from: PeterLoftus SN Margin (Up/Down) [dB]: 21.0 / 15.0
That part indicates you have an incredibly noisy line.
The first rule of troubleshooting in these situations is to plug the router into the BT Test socket:
The repost your line statistics from the router and we can advise you on how fast you may be able to get.
Cheers
B.
Re: Speed for country folk
25-07-2011 11:08 AM
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Is the noisy line something that BT shroud fix? Or does it come with being out of town away from the exchange. As I said below for years ISPs were not willing to consider supplying me broadband based on my postcode.
To be is to do - Kant
do be do be do - Sinatra
Re: Speed for country folk
25-07-2011 11:16 AM
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As a comparison I also live out in the sticks (2.7 miles as the crow flies) and these are my current stats
Noise Margin: 5.4 dB
Connection Rate: 4704 Kbps
Line Attenuation: 51.0 dB
and this is what my line used to do in 2009
Re: Speed for country folk
25-07-2011 11:20 AM
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Often, it is possible to request BT to fix a noisy line, but only after ruling out interference from internal wiring. Giving us those stats will allow us to determine whether there is something internal to your property that we can advise you on how to fix, or the "best" method to escalate with either your telephone provider or Plusnet to arrive at a solution!
Cheers
B.
Re: Speed for country folk
25-07-2011 11:42 AM
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Link Information
Uptime: 0 days, 0:04:13
DSL Type: G.992.1 annex A
Channel mode: Interleave
Maximum Bandwidth (Up/Down) [kbps/kbps]: 980 / 2,592
Bandwidth (Up/Down) [kbps/kbps]: 448 / 2,496
Data Transferred (Sent/Received) [kB/kB]: 0.00 / 879.00
Output Power (Up/Down) [dBm]: 12.0 / 17.5
Line Attenuation (Up/Down) [dB]: 24.0 / 44.5
SN Margin (Up/Down) [dB]: 22.0 / 16.5
Vendor ID (Local/Remote): TMMB / 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): 0
Error Seconds (Local/Remote): 0 / 0
FEC Errors (Up/Down): 0 / 0
CRC Errors (Up/Down): 0 / 0
HEC Errors (Up/Down): 0 / 0
To be is to do - Kant
do be do be do - Sinatra
Re: Speed for country folk
25-07-2011 11:56 AM
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How many phone points do you have in your house as it may well be the internal wiring.
Have a read here - the part at the bottom of the page http://www.kitz.co.uk/adsl/socket.htm
The first thing to check is if you have a terminal block and, if so, are the telephone points star or series connected
Re: Speed for country folk
25-07-2011 12:45 PM
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tell me its true 4512 Kbps!
I found all three of my sockets with a wire 3 but no wire 4 so I disconnected all leaving only 2 and 5.
all sockets are daisy chained so must be a star configuration. I think I have a pree 1981 installation with a terminal block for an incomer.
how soon will my profile be increased?
I'm chuffed
Link Information
Uptime: 0 days, 0:21:44
DSL Type: G.992.1 annex A
Channel mode: Interleave
Maximum Bandwidth (Up/Down) [kbps/kbps]: 976 / 4,512
Bandwidth (Up/Down) [kbps/kbps]: 448 / 4,512
Data Transferred (Sent/Received) [kB/kB]: 0.00 / 850.00
Output Power (Up/Down) [dBm]: 12.0 / 19.0
Line Attenuation (Up/Down) [dB]: 24.0 / 44.5
SN Margin (Up/Down) [dB]: 22.0 / 15.5
Vendor ID (Local/Remote): TMMB / TSTC
Loss of Framing (Local/Remote): 135 / 0
Loss of Signal (Local/Remote): 0 / 0
Loss of Power (Local/Remote): 0 / 0
Loss of Link (Remote): 0
Error Seconds (Local/Remote): 22 / 0
FEC Errors (Up/Down): 1 / 1,864
CRC Errors (Up/Down): 3 / 25
HEC Errors (Up/Down): 1 / NA
To be is to do - Kant
do be do be do - Sinatra
Re: Speed for country folk
25-07-2011 12:55 PM
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You should leave it for 3 days then ask for a line retrain which will reset to noise margin to 6dB and give even higher speeds
Assuming that your line holds sync then your profile speed should increase within a couple of days - 3 maximum
Re: Speed for country folk
25-07-2011 1:14 PM
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Got you, daisy chained must be a bus configuration, I've forgotten what I once new
I still need to find out what dropped me to 300 Kbps those two times, I think it was connected with heavy rain. I am concerend that such events will keep resetting my profile low
To be is to do - Kant
do be do be do - Sinatra
Re: Speed for country folk
25-07-2011 1:17 PM
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Re: Speed for country folk
25-07-2011 1:19 PM
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To argue with someone who has renounced the use of reason is like administering medicine to the dead - Thomas Paine
Re: Speed for country folk
25-07-2011 1:52 PM
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Re: Speed for country folk
25-07-2011 2:28 PM
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A general rule of thumb is that every 3dB increase in SNR from the default of 6 will reduce your sync by approximately 800Kbps. From your current figures, (and assuming the line is stable) you should see the max theoretical throughput on your line once this is performed.
You may also now benefit from an upgrade to 21CN (if its available on your exchange) which notes that with your attenuation you should get around 7552Kbps sync rate in ideal conditions, giving a profile of 6500Kbps and throughput of around 6000Kbps.
Amazing what a little tweaking of internal wiring can achieve
B.
Re: Speed for country folk
25-07-2011 4:47 PM
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Link Information
Uptime: 0 days, 0:47:58
DSL Type: G.992.1 annex A
Channel mode: Interleave
Maximum Bandwidth (Up/Down) [kbps/kbps]: 984 / 7,392
Bandwidth (Up/Down) [kbps/kbps]: 448 / 7,392
Data Transferred (Sent/Received) [kB/MB]: 0.00 / 42.55
Output Power (Up/Down) [dBm]: 12.0 / 19.5
Line Attenuation (Up/Down) [dB]: 24.0 / 44.0
SN Margin (Up/Down) [dB]: 22.0 / 6.5
Vendor ID (Local/Remote): TMMB / TSTC
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): 3 / 0
FEC Errors (Up/Down): 0 / 860
CRC Errors (Up/Down): 0 / 31
HEC Errors (Up/Down): 0 / 34
[Moderator's note by Jim (Oldjim): CSA name removed as per the forum rules but noted in the hidden forums]
To be is to do - Kant
do be do be do - Sinatra
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