High noise on line?

Hello I use to have a sync rate of 8128kbps and a lower noise margin but for nearly 3 weeks my sync rate has been 7648kbps and my noise margin has been 15.4dB.
Is there anything I can do to put it back to normal?
thanks
Thanks

Can you really tell any difference between 7.6M and 8.1M when using the internet? My speed varies randomly between about 6.4M and 7.3M each time the Hub reconnects. I gave up caring about it long ago because it makes no difference to me.
You may find that interleaving has been turned on. This may happen if your line has been accumulating too many errors recently. This doesn't make much difference to the overall speed, but does increase ping times as packets are buffered. My line has a high error rate, and I don't play online games, so interleaving is good for me. It may not be for you. It is possible to get it turned off, but don't expect it to be easy.
Ultimately, ADSL is a technological bodge that should never work - it requires sending high frequencies over telephone lines that weren't designed to carry them. The fact that it works at all is a minor miracle. However it does mean that even a tiny loss in line quality can reduce the connection speed. Unless the loss is substantial, BT won't be interested in fixing it.

Similar Messages

Very high noise my Dell Studio 1558 laptop

Hi, it's me again I'm after installation and under configuration my Arch
Ok, lets start.
My problem is very high noise my laptop. I think this is graphic card fault becouse while I used Ubuntu I had similar trouble. I think so becouse I was installed laptop-mode-tools and it's not helped. Now I am using open source driver xf86-video-ati.
My graphic card is :
02:00.0 VGA compatible controller: ATI Technologies Inc Manhattan [Mobility Radeon HD 5400 Series
Do You think installing ATI closed driver helps?
Can be something other guilty?
I hope You understanding and help me.

Closed-source ATI driver will probaly help, but before this try to set profile in open-source ones. It fixed the problem for me.
echo profile > /sys/class/drm/card0/device/power_method
echo low > /sys/class/drm/card0/device/power_profile
If low causes instabilities and display problems for you, try mid.
For more info about this, see https://wiki.archlinux.org/index.php/AT … MS_enabled
My favourite settings are low profile on battery and dynpm on AC.
Last edited by eXine (2011-12-22 21:52:30)

Noise on line but only when hub connected

Had this problem now for about 2 years had four engineers out and still the same problem.
Intermittent noise on line only when bb connected.
Hub drops and speed gets very slow.
Worse when weather hot.
I use to get a good connection of about 7500
ADSL line status<script type="text/javascript"></script>
Connection information<script type="text/javascript"></script>
Line state
Connected
Connection time
0 days, 0:09:56
Downstream
576 Kbps
Upstream
440 Kbps
ADSL settings<script type="text/javascript"></script>
VPI/VCI
0/38
Type
PPPoA
Modulation
ITU-T G.992.5
Latency type
Interleaved
Noise margin (Down/Up)
31.9 dB / 26.0 dB
Line attenuation (Down/Up)
42.5 dB / 22.6 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 / 4294967200
CRC Errors (Down/Up)
0 / 2147480000
HEC Errors (Down/Up)
nil / 0
Error Seconds (Local)
0

Well looks like i still have problems
ADSL line status<script type="text/javascript">// var trClass = ["odd", "even"]; var td1 = ["w3", "Line state", "Connection time", "Downstream", "Upstream"]; var td3 = ["w3", "VPI/VCI", "Type", "Modulation", "Latency type", "Noise margin (Down/Up)", "Line attenuation (Down/Up)", "Output power (Down/Up)", "Loss of Framing (Local)", "Loss of Signal (Local)", "Loss of Power (Local)", "FEC Errors (Down/Up)", "CRC Errors (Down/Up)", "HEC Errors (Down/Up)", "Error Seconds (Local)"]; var td2 = ["", "Connected", "0 days, 0:09:37", "4,701 Kbps", "440 Kbps"]; var td4 = ["", "0/38", "PPPoA", "ITU-T G.992.5", "Interleaved", "7.2 dB / 22.9 dB", "42.5 dB / 22.8 dB", "0.0 dBm / 12.9 dBm", "50", "23", "0", "144071 / 0", "1045 / 2147480000", "nil / 14", "288"]; // </script>
Connection information<script type="text/javascript">// createTable("normal", trClass, td1, td2); // </script>
Line state
Connected
Connection time
0 days, 0:09:37
Downstream
4,701 Kbps
Upstream
440 Kbps
ADSL settings<script type="text/javascript">// createTable("normal", trClass, td3, td4); // </script>
VPI/VCI
0/38
Type
PPPoA
Modulation
ITU-T G.992.5
Latency type
Interleaved
Noise margin (Down/Up)
7.2 dB / 22.9 dB
Line attenuation (Down/Up)
42.5 dB / 22.8 dB
Output power (Down/Up)
0.0 dBm / 12.9 dBm
Loss of Framing (Local)
50
Loss of Signal (Local)
23
Loss of Power (Local)
0
FEC Errors (Down/Up)
144071 / 0
CRC Errors (Down/Up)
1045 / 2147480000
HEC Errors (Down/Up)
nil / 14
Error Seconds (Local)
288
ADSL line status<script type="text/javascript">// var trClass = ["odd", "even"]; var td1 = ["w3", "Line state", "Connection time", "Downstream", "Upstream"]; var td3 = ["w3", "VPI/VCI", "Type", "Modulation", "Latency type", "Noise margin (Down/Up)", "Line attenuation (Down/Up)", "Output power (Down/Up)", "Loss of Framing (Local)", "Loss of Signal (Local)", "Loss of Power (Local)", "FEC Errors (Down/Up)", "CRC Errors (Down/Up)", "HEC Errors (Down/Up)", "Error Seconds (Local)"]; var td2 = ["", "Connected", "0 days, 0:00:28", "4,099 Kbps", "440 Kbps"]; var td4 = ["", "0/38", "PPPoA", "ITU-T G.992.5", "Interleaved", "16.3 dB / 24.2 dB", "42.5 dB / 22.8 dB", "0.0 dBm / 12.9 dBm", "50", "25", "0", "45 / 4294967200", "0 / 2147480000", "nil / 0", "300"]; // </script>
Connection information<script type="text/javascript">// createTable("normal", trClass, td1, td2); // </script>
Line state
Connected
Connection time
0 days, 0:00:28
Downstream
4,099 Kbps
Upstream
440 Kbps
ADSL settings<script type="text/javascript">// createTable("normal", trClass, td3, td4); // </script>
VPI/VCI
0/38
Type
PPPoA
Modulation
ITU-T G.992.5
Latency type
Interleaved
Noise margin (Down/Up)
16.3 dB / 24.2 dB
Line attenuation (Down/Up)
42.5 dB / 22.8 dB
Output power (Down/Up)
0.0 dBm / 12.9 dBm
Loss of Framing (Local)
50
Loss of Signal (Local)
25
Loss of Power (Local)
0
FEC Errors (Down/Up)
45 / 4294967200
CRC Errors (Down/Up)
0 / 2147480000
HEC Errors (Down/Up)
nil / 0
Error Seconds (Local)
300

High Noise in 5D Mark III

Hey Everyone,
I'm getting a random issue with my 5D Mark III. I usually shoot in AV mode, RAW at ISO 100. I don't like to increase my ISO because I want to avoid high noise and plus I'm shooting in HDR. In dim lighting conditions when I have to lengthen the shutter speed and then view/process the dng images in Camera Raw, I get a mixed bag of results. Some images at 1/8 sec or 2 sec have the grainiest noise in the shadows, but then I'll have an image at 10 or 15 seconds and the image is smooth and sharp. I'm at my wit's end.
It also helps to know that I just bought a 16 - 35mm 2.8L lens and it's been working fine up until today when the autofocus went bust. Could it be a body issue or lens issue? I'm driving to Canon repair on Monday morning to drop off both lens and body. Any help or insight will help.

No problem. I'm curious too. I dig a little deeper into your Exif data and look at your processing values:
Tint = "+2"
Exposure = "+3.40"
Shadows = "0"
Brightness = "+71"
Contrast = "+19"
Saturation = "0"
Sharpness = "25"
LuminanceSmoothing = "0"
ColorNoiseReduction = "25"
ChromaticAberrationR = "0"
The exposure was pushed by 3.5 stop, and the brightness +71. That's a huge value. Yet Noise Reduction is set at ZERO. Thus, the result should have a lot of noise and banding noise as seen in your photo. I don't think there is something wrong with your camera. You may have development PRESET turn on by default.
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High noise when I hold my ipod close to the ear...

Hello, when I hold my ipod nano 2nd generation close to my ear I hear a verry high noise (not verry loud) if its turned on..
I compared this problem with other ipods of the same generation and there was no noise..
I think there maybe some defekt in my ipod but I don´t know what it could be...
Maybe you guys know something about it, thanks for your help, greetings, Matthias.

Mike,
Great to hear that you like my blood, must find a way to commercialise it.
Hope all will good with your iPod, unfortunately, the same trouble will come again, as Apple and Microsift keep trying to upgrade the iTunes, and Windows and stealthily put in drivers that bugger up our stuffs.
Apple innovations, Mac, iMac, iPod, iPhone, iPad are fantastic on first release, it is only after the Project Team hand over to the Product Development Team, that we get all ***** in the system. But then they generate money from the product upgrades.
It been my pleasure to share my iPod experience. and as you say in Oz, "Hv a gud day mate!"

High cardinality and line dimenson

Hi
Are High cardinality and line dimenson both are dependent?
my understanding is that if the dimenson is more than 10% size of the fact table then we go for line dimenson. Highcardinality should be given only if the dimenson is more than 10% of fact table.By choosing line dimenson,fact table will be directly linked to sid table as there will be no dimenson table. Does it mean if I choose line dimenson, I can't go for high cardinality as there is no dimenson? Please let me know the relationship the between the two?
Thank you
Sriya

When compared to a fact table, dimensions ideally have a small cardinality. However, there is an exception to this rule. For example, there are InfoCubes in which a characteristic Document is used, in which case almost every entry in the fact table is assigned to a different Document. This means that the dimension (or the associated dimension table) has almost as many entries as the fact table itself. We refer here to a degenerated dimension.
Generally, relational and multi-dimensional database systems have problems to efficiently process such dimensions. You can use the indicators line item and high cardinality to execute the following optimizations:
       1.      Line item: This means the dimension contains precisely one characteristic. This means that the system does not create a dimension table. Instead, the SID table of the characteristic takes on the role of dimension table. Removing the dimension table has the following advantages:
○       When loading transaction data, no IDs are generated for the entries in the dimension table. This number range operation can compromise performance precisely in the case where a degenerated dimension is involved.
○       A table- having a very large cardinality- is removed from the star schema. As a result, the SQL-based queries are simpler. In many cases, the database optimizer can choose better execution plans.
Nevertheless, it also has a disadvantage: A dimension marked as a line item cannot subsequently include additional characteristics. This is only possible with normal dimensions
High cardinality: This means that the dimension is to have a large number of instances (that is, a high cardinality). This information is used to carry out optimizations on a physical level in depending on the database platform. Different index types are used than is normally the case. A general rule is that a dimension has a high cardinality when the number of dimension entries is at least 20% of the fact table entries. If you are unsure, do not select a dimension having high cardinality.
For example a dimension having Sales Doc number and Sales Org can be set as High Cardinal as Sales Doc number will occur many times.
Hope this helps
Raja

Differences between High cardinality and line item dimension

Please Search the forum
Friends,
can any one tell me the differences between High Cardinality and Line item Dimension and their use.
Thanks in Advance.
Jose
Edited by: Pravender on May 13, 2010 5:34 PM

please search in SDN

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.

Very high noise margin even after line re-wiring

Hi
I'm having some building work done at my house, and as part of it they first of all moved some old phone wiring, which meant the phone line was dreadful (on voice you could frequently not get a connection and when it worked would be very noisy). The internet as a result became ridiculously slow, to the point of being unusable. Subsequently, the line has been re-wired and the master socket moved such that it is about a foot of new cable from the incoming line to the new socket. All seems well on the voice front, but while the upstream bandwidth has moved a bit (to 1090kbps), downstream is still 258kbps.
The noise margin on downstream seems huge at 31db, which I assume is the problem:
15:18:29, 19 Nov.
( 832.450000) DSL noise margin: 5.90 dB upstream, 31.00 dB downstream
15:18:28, 19 Nov.
( 831.760000) DSL line rate: 1090 Kbps upstream, 286 Kbps downstream
so I'm wondering if this will automatically reset, or does someone need to do something at the BT end to reset it? I had booked an engineer to come and look at the line but I imagine this will in fact be a waste of time? I've tried multiple filters, plugging straight into the test socket, multiple routers and so on to no avail. There are no phone extensions or indeed anything plugged into the phone but the modem at the moment.
thanks
Pete
Solved!
Go to Solution.

Thanks everyone for helping, left it alone and the router seemed to kick the connection this morning by itself and all is well:
11:51:32, 21 Nov.
(161214.830000) DSL is up
11:51:30, 21 Nov.
(161213.120000) DSL noise margin: 6.60 dB upstream, 8.20 dB downstream
11:51:29, 21 Nov.
(161212.110000) DSL line rate: 1072 Kbps upstream, 18008 Kbps downstream
11:51:02, 21 Nov.
(161184.470000) DSL is down after 2672 minutes uptime
11:51:02, 21 Nov.
(161184.470000) ETHoA is down after 2672 minutes uptime
11:51:01, 21 Nov.
(161184.110000) PPPoA is down after 2672 minutes uptime [Waiting for Underlying Connection (WAN DSL - Up)]
11:50:57, 21 Nov.
(161180.010000) PPP LCP Send Termination Request [User request]
Phew!
Thanks
Pete

***noise on line fixed but ip profile still stuck ...

Hi,
After BT have resolved the fault with the line (4th Jan). The broadband speed still isn't as fast as it used to be, normally around 5/6mbps.
The fault existed for around 14 days, how long before the line settles down and i can expect my download speed to pick up or is there anything else that could be affecting the speed?
Router & Speed test Stats:
ADSL
   Type
Interleave Path
   Status
SHOWTIME
Downstream
Upstream
   Data rate(Kbps)
287Kb
440Kb
   Noise Margin
28
24
   Output power(dBm)
128
176
   Attenuation(dB)
41
12
Test1 comprises of two tests
1. Best Effort Test:  -provides background information.
Download Speed
233 Kbps
0 Kbps
250 Kbps
Max Achievable Speed
Download speedachieved during the test was - 233 Kbps
For your connection, the acceptable range of speeds is 100-250 Kbps.
Additional Information:
Your DSL Connection Rate :287 Kbps(DOWN-STREAM), 440 Kbps(UP-STREAM)
IP Profile for your line is - 253 Kbps
2. Upstream Test:  -provides background information.
Upload Speed
353 Kbps
0 Kbps
440 Kbps
Max Achievable Speed
>Upload speed achieved during the test was - 353 Kbps
Additional Information:
Upstream Rate IP profile on your line is - 440 Kbps
Solved!
Go to Solution.

your profile is at 253 becauce your connection speed is only 288. you ned to get your speed higher to get a higher profile not the other way round.
As you cannot find your modulation I cannot be certain you are on 21CN but I think with all the disconnections you have had that your line is now in a banded profile (nothing to do with ip profile) to stabilise your line and once stable for 3+ days the banding will be removed and your connection should return to normal.
If you get to 3+ days and speed still 288 then contact the mods to get them to get you out the banded profile http://bt.custhelp.com/app/contact_email/c/4951
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

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)
18. 5GHz wireless network/SSID: BTHub4-Z6FQ
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’.

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.

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

Ongoing issue concerning intermittent noise on lin...

I do not seem to be having much success in getting BT's overseas call centre to deal with this issue, so I would be very grateful for any help on this forum, please.
Since October last year, I have had intermittent broadband dropouts. It reached a stage where they were happening every 24 hours. I thought they were resolved when I bought a new router (I have always used third-party Netgear ones, I've never owned a BT HomeHub), and changed the cabling, but the problem has worsened during the last few days, especially the windy and rainy weather.
On picking up my telephone handset, I noticed very loud static on the line, which made the dialing tone almost impossible to hear. On one or two occasions, the broadband connection dropped at the same time. I have tried the test socket - same problem. The static is intermittent, not persistent.
Following the advice on these forums, I raised a voice fault initially. An engineer called yesterday, ran some tests on the line and said there did not appear to be anything wrong, and advised me to report it again as a broadband fault if the problem re-occurred. He also fitted what I believe to be a Mk 1 BT Openreach filtered ADSL faceplate. He said as the fault was intermittent, it was "very difficult to work with".
All seemed well with the new faceplate until about 10pm on Friday. I happened to pick up the phone and noticed more static on the line, and my upstream noise margin dropped from 6.7 db to 0db. At the same time, the modem resynced, and the static cleared after about 30 seconds. The connection does NOT drop every time, though.
The call centre has raised a broadband fault, but the line went mysteriously dead during the call (I was speaking to them on a separate line, not the one affected), and no-one from the call centre bothered to phone me back. I already had to explain the problem TWICE to them. Very frustrating.
I really don't know if this is a high resistance fault, something wrong with the equipment at the exchange, or what? The engineer who attended made no tests for broadband faults, and said that the broadband tests were much more complex.
I'm stumped. I wonder if a moderator or a knowledgeable person here could please advise me further? I really would like this resolved.
Many thanks.

Many thanks for your reply, imjolly. I've checked the cables and positioned the router away from any possible sources of interference.
Further to my earlier post, I tried another telephone handset this morning (an Opticom B300) and noticed that the background hiss was almost continuous this time, while the router was switched on. There was no crackling, though, and the connection did not drop. But when the router was powered down, the line was much quieter.
I'm guessing the broadband signal is starting to "break through" to the voice signal. That shouldn't happen, should it??
I went back to a BT Decor 110 handset (the one I always use) and the background noise was much reduced, even while the router was powered on.
No dropouts so far. I'm no expert in these matters, but it's almost as if an electrical charge begins to "build up" on the line, and then I will get a "storm" of static and crackles for up to 30 seconds. Then a loss of sync. Could be any time of day. Still stumped!

Very variable speeds. High noise. Should I follow ...

On a good day my MaxADSL broadband gives me 6.5Mbps. On a bad day, like to day, it can be closer to 2Mbps. So far, it's never dropped low enough to give me V04 errors on BT Vision. And for working from home it's not a problem as my speeds are always better than theirs as the office is in a very rural location!
However, I do have a lot of noise on the line:
Line state
Connected
Connection time
8 days, 12:30:50
Downstream
8,128 Kbps
Upstream
448 Kbps
VPI/VCI
0/38
Type
PPPoA
Modulation
ITU-T G.992.1
Latency type
Interleaved
Noise margin (Down/Up)
12.9 dB / 22.0 dB
Line attenuation (Down/Up)
21.0 dB / 11.5 dB
Output power (Down/Up)
19.8 dBm / 12.1 dBm
Loss of Framing (Local)
0
Loss of Signal (Local)
0
Loss of Power (Local)
0
FEC Errors (Down/Up)
4639 / 33
CRC Errors (Down/Up)
1 / 2147480000
HEC Errors (Down/Up)
nil / 19
Error Seconds (Local)
1
And these figures don't seem to vary when I move my HH2 to the master socket (which is inconveniently located above a doorway!). Although I've only ever had it there for 10 minutes or so - does it need to be there longer to establish the correct noise levels?
I use BBTalk as my primary phone. I received a call today and the quality was very poor.
So my question is should I chase up BT? Do I have a line fault?
Here's the BT Speedtest results. As always the speed they indicate is much higher than that given by ThinkBroadband.com or Speedtest.net:
Solved!
Go to Solution.

as you are on adslmax and also have max speed and profile I don't think noise margin is a problem but more like what the call margin in hand which is a good thing. your download on btspeedtester is 5mb and looks ok especially if run today when net could be busy
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High noise on line?

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