Fault rectified, but still high Noise margin and a...

Hi, I had a fault on my dropwire from the pole causing crackling on the line, of which caused my broadband to drop constantly and increase my noise margin to 13db, from the previous 6db. This caused my broadband speed to drop from 2.5Mb down to 1.05. The engineer when he replaced the drop wire and replaced my socket with a new Openreach one with a built in filter (the infinity one) said I just need to phone BT and get put through to second level support who can drop the target SNR. After many many many phonecalls to bt technical, they refuse to drop my target snr, and refuse to pass me on to second level support who can action this! Can anyone help me on here, as my fuse is getting very short!
Current Line Stats : 
ADSL Line Status
Connection Information
Line state:
Connected
Connection time:
0 days, 00:10:01
Downstream:
1.156 Mbps
Upstream:
448 Kbps
ADSL Settings
VPI/VCI:
0/38
Type:
PPPoA
Modulation:
G.992.1 Annex A
Latency type:
Interleaved
Noise margin (Down/Up):
13.4 dB / 8.0 dB
Line attenuation (Down/Up):
63.0 dB / 31.5 dB
Output power (Down/Up):
16.8 dBm / 11.9 dBm
FEC Events (Down/Up):
185 / 2
CRC Events (Down/Up):
19 / 5
Loss of Framing (Local/Remote):
0 / 0
Loss of Signal (Local/Remote):
0 / 0
Loss of Power (Local/Remote):
0 / 0
HEC Events (Down/Up):
44 / 0
Error Seconds (Local/Remote):
4 / 1

ADSL Line Status
Connection Information
Line state:
Connected
Connection time:
4 days, 06:03:56
Downstream:
1.188 Mbps
Upstream:
448 Kbps
ADSL Settings
VPI/VCI:
0/38
Type:
PPPoA
Modulation:
G.992.1 Annex A
Latency type:
Interleaved
Noise margin (Down/Up):
11.5 dB / 8.0 dB
Line attenuation (Down/Up):
62.8 dB / 31.5 dB
Output power (Down/Up):
16.6 dBm / 11.9 dBm
FEC Events (Down/Up):
1289 / 719
CRC Events (Down/Up):
131 / 14
Loss of Framing (Local/Remote):
0 / 0
Loss of Signal (Local/Remote):
0 / 0
Loss of Power (Local/Remote):
0 / 0
HEC Events (Down/Up):
234 / 6
Error Seconds (Local/Remote):
118 / 11

Similar Messages

  • Can anyone help? High noise margin and low sync sp...

    Hi all,
    just registered on the forum so this is my first post. Hopefully someone out there can help.
    I transferred my broadband to BT from Sky. With Sky my sync speed was around 4000kbps and download of about 3500kbps. I had a Netgear router with Sky but for some reason every day or so  my sync speed dropped to 2500kbps and download down to 1800kbps. I had to reboot the router to get the speeds back up again, very frustrating.
    I got BT broadband on 20/1/2010, set everything up and also fitted an I-plate. I noticed that line attenuation was 46db, this was previously 50.5 with sky and prior to I plate. The home hub sync was at 7200kbps at the start which i was very pleased with. I know this DLM thing is active for the first 10 days or so and speedtests during this time are not exactly accurate but still I was happy. after 3 days i did a speed test and got download of 5800kbps, chuffed to bits!
    But, after 2 days at that speed the sync dropped to 2176kbps, gutted. I have only rebooted the router 3 times since the service started and each time the sync goes back to 7000kbps ish but drops again a day later. The thing I dont understand is the noise margin. Its currently at 24.5db, isnt that awfully high? Why is this? when I reboot it drops to 8-9db ish but then goes up again with the speed dropping.
    currently connected to test socket, no other telephone equipment connected to any extensions
    Can anyone please help/advise whats going on or how to rectify it? I'm wondering if theres a line fault somewhere.
    And with attenuation at 46db I would have thought the speed could well be much higher than 2200kbps.
    I'll stop babbling now,
    Thanks

    whitesp wrote:
    Thanks for your reply Somerled,
    ok so something is causing noise at a particular time, i had wondered about the quality of the home wiring, there are 4 extension sockets in the property, but again i am currently only connected to the test socket.
    I dont have the old netgear router unfortunately so can't follow up on the suggestion you made.
    God this is gonna be a nighmare to track down, although come to think of it I do have a dimmer on quite close to where the master socket is.
    Can we say for sure that there definitely IS a source of noise/interference??
    Many thanks
    SOMETHING is forcing a resync, and at a low speed. The only thing that would cause that is a prolonged burst of noise.This is known to BT technicians as "REIN" (Repetitive Electrical Impulsive Noise). No point trying to get BT to investigate at this stage though, as it sounds very intermittent.
    The way to spot radio interference noise is to use a suitable receiver - and the most convenient is a portable medium wave transistor radio. Tune to a quiet spot at the lowest end of the scale, and turn up the volume. All you'll hear is white noise and the occasional quiet crackle. A burst of noise strong enough to affect the DSL signal will be unmistakeable - a LOUD crackling/buzzing/rasping noise.  If that coincides with a resync, you've found it. You then have to figure out what electrical device caused the noise.....
    Another possible source of DSL noise problems is less obvious -  noise caused by a line fault. This causes an unwanted mixing of the phone and DSL signal in a way that can't be corrected by the filters. This will have much the same effect as external interference noise.
    Check this : does the router resync when the phone rings, or when the phone is in use ?  If it does, then we're on to something - a fault known as an "HR" (High Resistance). If that doesn't happen, then we are back to external radio interference as the cause.
    I suppose the HV lines you mention might have some effect, but it's a bit of a long shot. I'd expect noise from them would be a bit more constant, and would cause problems all the time, rather than intermittently.

  • Question about Noise Margin and Line Attenuation a...

    1.       For several years I have had a BT telephone line.  From the utilities provided by http://www.kitz.co.uk/adsl I find  that I am connected to the Exchange at Merton Park (BT Code: LSMEPK)  Distance:-   Direct:    960 metres (appx)*  By Road:  1.29 km. Exchange Status ADSL enabled: March 30, 2000 DSL Max enabled:   March 30, 2006 SDSL enabled : Enabled  21CN due : (PSTN) N/A 21CN WBC (Broadband)   Enabled 15.02.09
    2.       I  previously had broadband from UKOnline  and used a Speedtouch 570 adsl modem. I was paying £9.99 for a speed of 1MBit/s – in practice 700K – which was fine for most purposes but BBC iplayer did struggle a bit. UkOnline has been taken over by SKY so I switched to BT Total Broadband Option 3 in mid December, and initially used the Speedtouch 570 as there were delivery delays on BT Home Hub 2.0 due to weather conditions.  Speed was initially very good but did not measure it.
    3.       After Xmas I set up the BT Home Hub and ran a  speed test  - the profile was 2.5MBit/s.  I was disappointed to get less than 3Mbit/s which is needed for BBC iplayer HD.
    ADSL line status
    Connection information
    Line state  Connected
    Connection time  0 days, 2:26:57 ------> 6th January 2011
    Downstream  2,268 Kbps
    Upstream  440 Kbps
    ADSL settings
    VPI/VCI  0/38
    Type  PPPoA
    Modulation  ITU-T G.992.5 ---à this apparently means ADSL2+
    Latency type  Interleaved
    Noise margin (Down/Up)  15.7 dB / 31.9 dB
    Line attenuation (Down/Up)  27.0 dB / 9.7 dB
    Output power (Down/Up)  0.0 dBm / 12.7 dBm
    Loss of Framing (Local)  22
    Loss of Signal (Local)  3
    Loss of Power (Local)  0
    FEC Errors (Down/Up)  6512 / 0
    CRC Errors (Down/Up)  0 / 2147480000
    HEC Errors (Down/Up)  nil / 0
    Error Seconds (Local)  2
    4.       As part of the “slow speed wizard” I looked into getting the accelerator plate for my NTE5 split face master socket available for postage only (£1.20) but the web form advised me that if I proceeded with this order the broadband contract would automatically be extended by 12 months. I checked my BT internet account and was surprised to find an email (23rd Dec 2010) advising me that as an Option *1* customer I was in danger of exceeding my usage allowance – which surprised me as I am definitely Option 3. I wondered if I had had the speed throttled. Therefore phoned BT accounts who said the email was a mistake - I am Option 3,  also said that accelerator plate was unlikely to make a difference.
    5.       I contacted the BT call centre who talked me through various options. Plugging the hub direct into the master socket made no difference.  They also ran a line test and said the line was fine.
    6.       I therefore browsed the community care forum and find that disappointing speeds are not uncommon. One of the threads mentioned disconnecting the bell wire on the extensions. I follow this advice and removed line 3 on all extensions and then checked the ADSL status on the hub.
    ADSL line status
    Connection information
    Line state  Connected
    Connection time  0 days, 6:33:45 10th January 2011
    Downstream  2,272 Kbps
    Upstream  888 Kbps
    ADSL settings
    VPI/VCI  0/38
    Type  PPPoA
    Modulation  ITU-T G.992.5
    Latency type  Interleaved
    Noise margin (Down/Up)  31.8 dB / 14.4 dB
    Line attenuation (Down/Up)  27.0 dB / 9.7 dB
    Output power (Down/Up)  0.0 dBm / 12.3 dBm
    Loss of Framing (Local)  0
    Loss of Signal (Local)  0
    Loss of Power (Local)  0
    FEC Errors (Down/Up)  0 / 0
    CRC Errors (Down/Up)  0 / 2147480000
    HEC Errors (Down/Up)  nil / 0
    Error Seconds (Local)  0
    7.       This had a dramatic improvement on Upstream speed –  and a big change to the noise margin Noise margin which had been (Down/Up) 15.7 dB / 31.9 dB  and is now Noise margin (Down/Up)  31.8 dB / 14.4 dB. It did not improve the download speed.
    8.       In the following days the BT hub has not been particularly stable with some intermittent loss of wireless connectivity every few hours. Examining the event log I was a bit disconcerted to see  alterations to firewall settings had happened (which I hadn’t made) and resets which I am pretty certain I hadn’t made – and a userid login with a name like TR69. Perhaps these are occasioned by the BT speedtester? To be fair I had reset and powered off the hub a number of times in attempt to sort out this problems.
    9.        I have switched to a Netgear DG83GT (V1.03.23)  for the time being until I have what I can regard as a reasonably fast stabile connection.  At the time of writing this has been stable for 20 hours DownStream Connection Speed 2268 kbps UpStream Connection Speed  888 kbps.As stated earlier I would like downstream to be faster.
    The perceived wisdom on the forum seems to be that several days of complete stability are required if there is to be any improvement on speed.
    10.   If a moderator or anyone with the relevant experience reads this I would be very grateful for answers to the follow questions:
    A.      Is the change in the Noise Margin parameter a good thing or a bad thing?
    B.      Are the line attenuation figures acceptable for a distance of under 1.5kilometres to the exchange?
    C.      Should I be able in theory to get a faster speed i.e. downstream 3Mbit/s?
    D.      From the forum it seems to take several days for speed adjustments to be effected or to take effect – is this a technical issue or a policy issue?
    Many thanks.
    Robert
    Solved!
    Go to Solution.

    Good Morning - it is now 6 days since this posting. During this time there have been 2 resets of the adsl line
    Fri, 2011-01-14 03:28:43 - LCP down.
    Fri, 2011-01-14 03:28:54 - Initialize LCP.
    Fri, 2011-01-14 03:28:54 - LCP is allowed to come up.
    Fri, 2011-01-14 03:28:54 - CHAP authentication success
    and
    Sun, 2011-01-16 16:37:26 - LCP down.
    Sun, 2011-01-16 16:37:36 - Initialize LCP.
    Sun, 2011-01-16 16:37:36 - LCP is allowed to come up.
    Sun, 2011-01-16 16:37:36 - CHAP authentication success
    These were not initiated by me - and since noise margins and sync speeds changed as a consequence can I assume that this is evidence of the adaptive process working?
    Secondly, as you can see, the noise ratio has vastly improved as have the upstream and downstream sync speeds
             System Up Time 157:54:52               
          ADSL Link          Downstream          Upstream              
          Connection Speed           11199 kbps           1091 kbps                
          Line Attenuation           27.0 db           9.9 db                
          Noise Margin           14.8 db           9.2 db               
    BUT from the BT speedtester, as shown below  I seem to be stuck in a banded IP profile of 1750/1091 which is very different from the  downstream sync speeds of 11199 Kbps(DOWN-STREAM)
    Can BT staff take action to alter this? If they can how do I contact them?
    Regards,
    Robert
    18th Jan 2010
     Download Speed    1288 Kbps
     0 Kbps   2000 Kbps
    Max Achievable Speed
     Download speedachieved during the test was - 1288 Kbps
     For your connection, the acceptable range of speedsis 800-2000 Kbps.
     Additional Information:
     Your DSL Connection Rate :11199 Kbps(DOWN-STREAM), 1091 Kbps(UP-STREAM)
     IP Profile for your line is - 1750 Kbps
    The throughput of Best Efforts (BE) classes achieved during the test is - 2.28:10.77:87.0 (SBE:NBEBE)
    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       896 Kbps
    0 Kbps   1091 Kbps
    Max Achievable Speed
    >Upload speed achieved during the test was - 896 Kbps
     Additional Information:
     Upstream Rate IP profile on your line is - 1091 Kbps

  • High Noise Margin

    Hi there,
    It seems like my line has been changed to a different profile with the Downlink Noise Margin Target being set to 10dB.
    I'd like to have it back to 6dB as before.  I've lost over 0.6Mbps and my speeds weren't exactly that high to begin with!
    Many thanks!
    1. Product Name: HomeHub4
    3. Firmware version: v0.07.01.0910-BT (Type B) Last updated 21/1/2015
    4. Board version: 01A
    5. DSL uptime: 3 days, 09:19:23
    6. Data Rate: 711 / 2203
    7. Maximum Data Rate: 724 / 2404
    8. Noise Margin: 5.5 / 10.3
    9. Line Attenuation: 35.0 / 51.5
    10. Signal Attenuation: 34.9 / 55.8
    11. Data sent/received: 192.8 MB / 3.9 GB
    13. BT Wi-fi: No
    14. 2.4GHz wireless network/SSID: BTHub4-Z6FQ
    15. 2.4GHz wireless connections: Enabled (802.11 b/g/n (up to 144 Mb/s))
    16. 2.4GHz wireless security: WPA & WPA2 (Recommended)
    17. 2.4GHz wireless channel: Automatic (Smart Wireless)
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    19. 5GHz wireless connections: Enabled (802.11 n (up to 300 Mb/s))
    20. 5GHz wireless security: WPA2 Only
    21. 5GHz wireless channel: Automatic (Smart Wireless)
    22. Firewall: Default
    23. MAC Address: 18:
    24. VPI/VCI: 0/38
    25. Modulation: G.992.3(ADSL2)
    26. Latency type: Fast
    27. Software variant: -
    28. Boot loader: 0.4.3-BT (Mon Jun 9 14:23:56 2014)

    Hi HaoForNow,
    Thanks for posting and welcome back!
    Sorry for the connection problems you were having with your broadband.  Great to see everything has been stable over the last 3 days.  I'll help reset the profile to reduce the noise margin and push your connection speed in the right direction ^^^ 
    Click on my username and under the "about me" section of my profile you'll see the link to send us your details.
    Cheers,
    Robbie
    BTCare Community Mod
    If we have asked you to email us with your details, please make sure you are logged in to the forum, otherwise you will not be able to see our ‘Contact Us’ link within our profiles.
    We are sorry that we are unable to deal with service/account queries via the private message(PM) function so please don't PM your account info, we need to deal with this via our email account :-)
    If someone answers your question correctly please let other members know by clicking on ’Mark as Accepted Solution’.

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  • Line dropping and high Noise margin follwing Excha...

    Hi guys.
    Back again for my biannual problem solving session. So heres my story. Our internet went off last Thursday for 10 minutes or so followed by an email letting us know that our local exchange had been upgraded, then began the problems. Incidentally, inicially I wa over the moon, my speed had increased to a blistering 10.8 Mbps.
    From then on, whenever we mad eor received a phone call our broadband would drop out. I made the usual call to India, mive the hub etc etc but to no avail. eventually I decided to buy and change the micro filters. This worked, great, but why did I have to do this? Why did my filters no longer work?
    I had hoped that would be the end of it, still at regular intervals, the BB is dropping out and reconnecting, each time it reconnects, the HH2 is syncing at a lower speed and the Noise margin is increasing. Only slowly but it is very irritating. We have gone down from 10.8 to just over 9Mbps. Where will it end? Anyhoo, I have spoke to India again and they are looking into it.
    Any ideas/comments? Here are my stats.
    ADSL line status
    Connection information
    Line state
    Connected
    Connection time
    0 days, 9:28:53
    Downstream
    10,883 Kbps
    Upstream
    1,112 Kbps
    ADSL settings
    VPI/VCI
    0/38
    Type
    PPPoA
    Modulation
    ITU-T G.992.5
    Latency type
    Interleaved
    Noise margin (Down/Up)
    8.7 dB / 5.7 dB
    Line attenuation (Down/Up)
    35.0 dB / 18.5 dB
    Output power (Down/Up)
    0.0 dBm / 12.7 dBm
    Loss of Framing (Local)
    0
    Loss of Signal (Local)
    0
    Loss of Power (Local)
    0
    FEC Errors (Down/Up)
    0 / 4294967264
    CRC Errors (Down/Up)
    672 / N/A
    HEC Errors (Down/Up)
    N/A / 0
    Error Seconds (Local)
    360
    Solved!
    Go to Solution.

    Just leave it alone, it will sort itself out after a few days, its best not to get the helpdesk involved, as there is nothing wrong with your connection, its just the normal period of settling in when the tline is upgraded.
    Its best not to restart or disconnect it for at least 10 days, otherwise you will end up with a much slower speed.
    ADSL2+ is uses more bandwidth, so its important to keep the distance from the point where your line comes in, to the home hub, as short as possible, and have a filter at the point it enters the house, so that the broadband signal does not go down the extension wiring.
    The ideal solution is a filtered faceplate at the master socket, that will ensure that you get the fastest connection speed.
    Like this http://forumhelp.dyndns.info/images/adslface.jpg
    or this
    http://forumhelp.dyndns.info/images/newnte.jpg
    Some of the older microfilters are not as effective at stopping the higher frequency ADSL2+ signals from getting into your phone circuit, which is most likely why you were asked to change them.
    There are some useful help pages here, for BT Broadband customers only, on my personal website.
    BT Broadband customers - help with broadband, WiFi, networking, e-mail and phones.

  • High noise margin, low speed and repeated drop out...

    Hi - I have a Home Hub 3 which is always dropping the connection.  Unfortunately it gets re-booted alot as this seems to be the only way to get things moving again.  I have just ordered a new router/modem to ss if that will hold the connection better but have been reading these forums and see that the Line Status and Speedtest are a good place to start.  My Line Status shows a noise margin of 17.7dB - could this be my problem?
    ADSL Line Status
    Connection Information
    Line state:
    Connected
    Connection time:
    0 days, 03:09:09
    Downstream:
    7.781 Mbps
    Upstream:
    448 Kbps
    ADSL Settings
    VPI/VCI:
    0/38
    Type:
    PPPoA
    Modulation:
    G.992.1 Annex A
    Latency type:
    Fast
    Noise margin (Down/Up):
    4.3 dB / 22.0 dB
    Line attenuation (Down/Up):
    33.6 dB / 17.5 dB
    Output power (Down/Up):
    19.8 dBm / 11.7 dBm
    FEC Events (Down/Up):
    0 / 2
    CRC Events (Down/Up):
    3000 / 5
    Loss of Framing (Local/Remote):
    0 / 0
    Loss of Signal (Local/Remote):
    0 / 0
    Loss of Power (Local/Remote):
    0 / 0
    HEC Events (Down/Up):
    1907 / 1
    Error Seconds (Local/Remote):
    794 / 6
    Speed Test data via BT Wholesale site
    D/L speed 3.78  
    U/L Speed 0.23  
    Ping Latency 68.38
    and via BT domestic speed test
    D/L Speed 5.74
    U/L Speed 0.20
    Connection Speed 7.97
    Do you think noise is my problem and any suggestions please!!
    Many thanks in advance
    Andrew

    Ha - many thanks the quick reply but I am un-masked already as not having a clue what I am talking about! A few hours spent reading up on things before I posted was not enough! I am plugged in to the test socket - have just done the quiet line test on 17070 from a corded phone and there is no noise. A bit of history - 18 months ago we had issues with water damage to underground lines to the house and we are now on the last usable pair (?) at that time I had all extension wiring reoved and new Master socket fitted. We have been OK but not spectacular since - we struggle to have 3 computers running off the net at times and I dont beieve we are getting anywhere close to our expected speed and then recently we have experienced drop outs and really slow speed as mentioned in original post.

  • Slow connection speed but high noise margin

    My internet connection is slow (approx 0.5 mbit) and my noise margin seems exessive. How do i get this sorted?
     Download speedachieved during the test was - 0.44 Mbps
     For your connection, the acceptable range of speeds is 0.05 Mbps-0.5 Mbps.
     Additional Information:
     Your DSL Connection Rate :0.58 Mbps(DOWN-STREAM), 0.29 Mbps(UP-STREAM)
     IP Profile for your line is - 0.5 Mbps
    Connection Information
    Line state:
    Connected
    Connection time:
    14 days, 09:12:55
    Downstream:
    576 Kbps
    Upstream:
    288 Kbps
    ADSL Settings
    VPI/VCI:
    0/38
    Type:
    PPPoA
    Modulation:
    G.992.1 Annex A
    Latency type:
    Fast
    Noise margin (Down/Up):
    26.1 dB / 25.0 dB
    Line attenuation (Down/Up):
    53.9 dB / 30.0 dB
    Output power (Down/Up):
    16.4 dBm / 12.0 dBm
    FEC Events (Down/Up):
    0 / 1
    CRC Events (Down/Up):
    186 / 454

    when was the last time you renewed your BT contract?  looks like an old half meg connection.  if so you need to renew your contact and get moved to adslmax
    If you like a post, or want to say thanks for a helpful answer, please click on the Ratings star on the left-hand side of the post.
    If someone answers your question correctly please let other members know by clicking on ’Mark as Accepted Solution’.

  • High Noise Margin - Inconsistent Speed

    Hi,
    I had an issue between a month and two months ago, involving poor broadband speeds. This was eventually resolved after a line issue was detected and connection speeds are now better. However, when checking the noise margin through my homehub, the downstream noise margin is still much higher than before the fault (from reading other forum posts, I gather it should be around 6dB, whereas it ranges from 15dB - 17dB).
    Download speeds also fluctuate frequently since the fix. This is more noticeable when I am using a platform such as Steam to download a larger file. Before the line fault, download speed was constant, and normally around 1.1 Mbps. Now, however, it varies anywhere from 200 Kbps to 900 Kbps and never remains constant for more than 2 or 3 seconds.
    I have pasted the connection status page from my homehub below. Although the connection time shows 2 days, this was due to a restart I performed to see if it affected the line performance. Before this, I had 19 days continuous connection. A speedtest from speedtester.bt.com shows 5.67 Mbps download, 0.84 upload and 28.63 ping. Again, this is not as good as before the first line issue occurred.
    Line state:
    Connected
    Connection time:
    2 days, 16:37:59
    Downstream:
    6,607 Kbps
    Upstream:
    1,195 Kbps
      ADSL settings
    VPI/VCI:
    0/38
    Type:
    PPPoA
    Modulation:
    G.992.5 Annex A
    Latency type:
    Fast
    Noise margin (Down/Up):
    15.3 dB / 5.9 dB
    Line attenuation (Down/Up):
    36.5 dB / 21.3 dB
    Output power (Down/Up):
    0.0 dBm / 12.5 dBm
    FEC Events (Down/Up):
    0 / 0
    CRC Events (Down/Up):
    1276 / 183
    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
    HEC Errors (Down/Up):
    1526 / 113
    Error Seconds (Local/Remote):
    0 / 157
    Is there any reason why these issues are still occurring?
    Thanks,
    Ben

    Hi,
    Thanks for the quick replies!
    I have tried the quiet line test and there is no noise whatsoever on the line.
    I have tried the test socket previously, but am currently trying it again. The downstream speed has risen slightly, but the noise margin remains unchanged. I have restarted the homehub twice since connecting to the test socket, and it has currently been connected to the test socket for around half an hour altogether (in between homehub restarts).
    I have posted a screenshot from the BT speedtester in the next post.
    Here are the connection details from the home hub:
    Line state:
    Connected
    Connection time:
    0 day, 00:07:36
    Downstream:
    7,703 Kbps
    Upstream:
    1,183 Kbps
      ADSL settings
    VPI/VCI:
    0/38
    Type:
    PPPoA
    Modulation:
    G.992.5 Annex A
    Latency type:
    Fast
    Noise margin (Down/Up):
    15.1 dB / 6.1 dB
    Line attenuation (Down/Up):
    36.5 dB / 21.3 dB
    Output power (Down/Up):
    0.0 dBm / 12.4 dBm
    FEC Events (Down/Up):
    0 / 0
    CRC Events (Down/Up):
    6 / 0
    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
    HEC Errors (Down/Up):
    15 / 0
    Error Seconds (Local/Remote):
    0 / 0
    Thanks,
    Ben

  • High noise margins

    Hi all, (nearly) a first time poster and am having SERIOUS issues with BT Broadband.
    I was with Sky for ages but migrated to BT, I had consistant and steady speeds with Sky of 4.5 to 5.5 mb.
    I had a recent loss of connection (towards the end of my 10 day "settling" period) and the full connection went down soon after and 5 days later re-connected me, the line is noisy to the ear, BT have conducted tests and they say all is fine, I even hear the modem noise connecting if I'm on the phone.
    I've checked all sockets, am using the master(there is no test socket in my box, there is no "bell" line connected). I'm on the Hartlepool exchange so don;t know if that has been recently upgraded to the 21CN, if so would this cause any of my problems??
    I've have checked everything at my end that could cause excess noise, have removed phones, Sky+box etc.. and still a crappy connection, any ideas guys n gals?? Thanks
    Stats below:
    ADSL line status
    Connection Information
    Line state
    Connected
    Connection time
    0 days, 00:00:31
    Downstream
    575 Kbps
    Upstream
    888 Kbps
    ADSL Settings
    VPI/VCI
    0/38
    Type
    PPPoA
    Modulation
    G.992.3 Annex A
    Latency type
    Interleaved
    Noise margin (Down/Up)
    12.5 dB / 9.6 dB
    Line attenuation (Down/Up)
    49.1 dB / 27.8 dB
    Output power (Down/Up)
    4.4 dBm / 1.3 dBm
    Loss of Framing (Local/Remote)
    0 / 0
    Loss of Signal (Local/Remote)
    0 / 0
    Loss of Power (Local/Remote)
    0 / 0
    FEC Errors (Down/Up)
    0 / 0
    CRC Errors (Down/Up)
    0 / 32
    HEC Errors (Down/Up)
    0 / 0
    Error Seconds (Local/Remote)
    0 / 0

    when you say the line is noisy have you tried the quiet line test preferably with a corded phone in master socket - dial 17070 and option 2 - you should hear nothing
    your exchange has been upgraded to 21CN and you are currently on adsl2 with modulation of 992.3
    If you like a post, or want to say thanks for a helpful answer, please click on the Ratings star on the left-hand side of the post.
    If someone answers your question correctly please let other members know by clicking on ’Mark as Accepted Solution’.

  • Constant brief disconnects - high noise margin? Pl...

    Hi. Desperately seeking some help, this problem is driving me mad.
    Every evening when using my XBOX360, my connection is dropping from time to time. The middle light either disappears and reappears or goes yellow, flashes for a bit, then ultimately comes back. It doesn't generally stay off long but the effect it's having is that I lose connection to the game (NHL 11) and get credit for a disconnect loss.
    I've spent countless hours on this to no avail. I've done all the usual tricks and nothing. I then spent a while reading every thread before posting this just in case -- seems there's 1 or 2 others who've experienced some similar things. 1 thing I will do is email the mods to ask if my line can be changed to fast as I've read that may help a gamer like me. I also read that the noise margin should be in the 6 region while mine currently sits at 2.5x that amount.
    I'd REALLY appreciate some help here. I'll pay it forward however I can; heck, I'd pay good money to get this **bleep** problem fixed.
    Line state
    Connected
    Connection time
    0 days, 00:40:03
    Downstream
    11,998 Kbps
    Upstream
    888 Kbps
    ADSL Settings
    VPI/VCI
    0/38
    Type
    PPPoA
    Modulation
    G.992.5 Annex A
    Latency type
    Interleaved
    Noise margin (Down/Up)
    14.9 dB / 14.6 dB
    Line attenuation (Down/Up)
    17.0 dB / 6.2 dB
    Output power (Down/Up)
    18.0 dBm / 1.3 dBm
    Loss of Framing (Local/Remote)
    0 / 0
    Loss of Signal (Local/Remote)
    0 / 0
    Loss of Power (Local/Remote)
    0 / 0
    FEC Errors (Down/Up)
    15 / 0
    CRC Errors (Down/Up)
    1 / 0
    HEC Errors (Down/Up)
    1 / 0
    Error Seconds (Local/Remote)
    1 / 0

    Thanks for replying. I have moved the Home Hub to at least five different areas, all in good space and free of any interference. I've had it in my window, in my hallway and also raised high in my living room. It hasn't made any difference. I've tried every possible means I can think of or that I've read. I actually just this second got disconnected again. Think it lasted about 40 minutes this time.
    Here are the new stats:
    Line state
    Connected
    Connection time
    0 days, 00:02:57
    Downstream
    11,847 Kbps
    Upstream
    888 Kbps
    ADSL Settings
    VPI/VCI
    0/38
    Type
    PPPoA
    Modulation
    G.992.5 Annex A
    Latency type
    Interleaved
    Noise margin (Down/Up)
    15.0 dB / 14.1 dB
    Line attenuation (Down/Up)
    16.9 dB / 6.2 dB
    Output power (Down/Up)
    17.8 dBm / 1.3 dBm
    Loss of Framing (Local/Remote)
    0 / 0
    Loss of Signal (Local/Remote)
    0 / 0
    Loss of Power (Local/Remote)
    0 / 0
    FEC Errors (Down/Up)
    0 / 15
    CRC Errors (Down/Up)
    0 / 110
    HEC Errors (Down/Up)
    0 / 0
    Error Seconds (Local/Remote)
    0 / 6

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