Netgear noise margins

I've swapped out the Hub for my Netgear DG834G but although the sync is good the noise margin drops from 3 during the day to 0 to -1 after about 18.00 hrs, I've rebooted a couple of times and each time the sync has dropped but I can't get the noise margin to increase.
Any ideas please .
Del.

the dgteam firmware gives more options but not sure about v3. The v2 update I did gave a bit more information but not ability to alter my noise margin. However the dg834pn I use with dgteam firmware allows me to negotiate my noise margin + or -. currently mines is set at 75% to drop my NM and increase my sync
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Similar Messages

Can i set the noise margin with NetGear DGN1000

Hi
i'm looking for a new router to replace my HH2 for the main reason of setting my own noise margin i dont want something to pricey so i came across the NetGear DGN1000 it's got pretty decent specs but does it allow me to set my own noise margin ?? also do you recommened this router ??

The DGN1000 doesn't have a Broadcom chipset so I don't think you can set the noise margin. The DGN2000 is a better router.

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

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.

Zero Noise Margin

Since first thing this morning, my router has been reporting a zero for the noise margin. I have not lost sync and the connection has not dropped. My connection speed and real download speeds have not dropped either.
I thought a connection could not be maintained with a zero noise margin. Is this likely to be glitch from the netgear 834 router?, or is this something I should not worry about?
Thanks for any insight.

Since the last engineer visit, and prior to this morning, my noise margin has been a fairly stable 7 or 8 at all times of the day. Then this morning I noticed it had dropped to zero. I have noticed no change in download performance and I've run a speed test a couple of times and I'm getting my normal stats.
I know in the past, that a temporary noise margin drop to zero would sometimes mean a loss of sync, but this has been at zero all day so far with no apparent ill effects. That's why I thought it might be a glitch.
I'm reluctant to power down the router to see if that would change anything. My line is the most stable right now that it has been in months, and I don't want to mess that up unless it is absolutely necessary.
Here are my router stats. I can't run the BT speedtester at the moment, as I'm running a backup to a network drive right now.
System Up Time 103:48:04
Port
Status
TxPkts
RxPkts
Collisions
Tx B/s
Rx B/s
Up Time
WAN
PPPoA
546113
761091
0
174
2484
103:47:26
LAN
10M/100M
1611459
1803285
0
2673
739
103:48:00
WLAN
11M/54M
359075
146543
0
622
34
103:47:51
ADSL Link
Downstream
Upstream
Connection Speed
1280 kbps
448 kbps
Line Attenuation
59 db
15.5 db
Noise Margin
0 db
14 db

Noise Margin Increase

I've been here before, but now the problem is more noticeable.
Due to many disconnects recently my ADSL2 noise margin has been increased to 6.0 dB.
The result is that the speed profile has been reduced to 14330 kbps, from around 18000 kbps, originally. Actual speed is 12200 down / 900 up. Noise margin fluctuates between 5.9 and 6.1 down and up.
I saw this problem on a friend's BT Broadband some time ago, and replaced her hub. This solved the problem. Hence I have no spare BT hub.
Moreover, is this noise margin setting likely to be permanent, or will the speed recover slowly? The line seems to be stable, but CRC errors are high.
ADSL line status
Connection information
Line state
Connected
Connection time
6 days, 6:03:46
Downstream
14,332 Kbps
Upstream
1,164 Kbps
ADSL settings
VPI/VCI
0/38
Type
PPPoA
Modulation
ITU-T G.992.5
Latency type
Interleaved
Noise margin (Down/Up)
5.9 dB / 5.9 dB
Line attenuation (Down/Up)
18.5 dB / 6.1 dB
Output power (Down/Up)
0.0 dBm / 12.6 dBm
Loss of Framing (Local)
12
Loss of Signal (Local)
1
Loss of Power (Local)
0
FEC Errors (Down/Up)
14839070 / 0
CRC Errors (Down/Up)
9331 / N/A
HEC Errors (Down/Up)
N/A / 0
Error Seconds (Local)
1619
Software version 8.1.H.U | Time and date 10:13:01 30/03/2013

imjolly wrote:
if the increase in noise margin was caused by disconnections was that the router dropping connection or manual reset say due to work in your home? if whatever caused it is now solved then I would just leave it
from your stats the line looks stable and not a great deal of errors for 6 days connected. if you remain connected then the noise margin should go back to 3db automatically but may take some time. you could always ask the mods to reset to 3db but that will increase the crc/hec errors
Thanks,
You may have seen some of my recent mild rants and complaints.
BT support in India arranged for a reset last weekend, and the noise margin dropped to 3dB. (Good reponse from India). This lasted 12 hours, and then the hub tripped again, overriding the Power Save at 3.00 am Monday (there were no mains supply failures) . Hence the return to 6dB, but with a better speed which had been down to 8000 kbps.
The hub is always left switched on.
I now have a new (spare) Netgear Hub and if there are any more problems I will install it.
Don't want to pester the mods too much.

New phone line and broadband, massive noise margin...

Hi, being a long time DSL stalwart a recent move to a new property has meant I've needed to switch over to ADSL instead and thus far it's proving to be a bit of a mare!
I waited a month for the initial installation engineer who promptly never showed anyway, no bother I thought, the hub turned up and I installed it myself and it promptly didn't work It soon became pretty apparent that the phone line was completely dead even from the test socket. A few phone calls later and the phone line is working much to my delight. The broadband is another story though, initially it still couldn't connect but later in the day it managed to get going. However it's excruciatingly slow with an average of 20 to 30kps throughput and substantial packetloss. Also worth noting is that in this new property, only the master socket actually works, this place has 4 other sockets dotted around all of which appear to be dead, could these be part of the issue? Does using the test socket completely cut these out and rule out bad wiring? Just to add, at 13 hours connected the adsl status is pretty much the same and I couldn't notice anything on the BT line noise test number.
I'm not familar with the workings on ADSL lines but I'm guessing the root of the problem is down to a wildly varying noise margin both up and down. Down fluctuates between ~2 and 20 within a matter of seconds and up gives some numbers that defy belief. Now the line was originally activated on Wednesday, actually kicked into life sometime on Friday and the router has been connected for 13 hours now, whilst it's still early days and things should bed in more, I assume I'm right in thinking I should be alarmed at how bad a line I'm starting out with? And should I be directing my ire at the builders or BT?
Any help and suggestions will be hugely appreciated!
Cheers!
Solved!
Go to Solution.

as it is a newbuild is the master socket inside your home or outside like this
connecting to the test socket will eliminate all your extension sockets and should be your best connection. if you are not in the test socket could you try it and post new stats please
with your attenuation I would expect a connection speed of about 18mb when you get this fiixed
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Please can I have my Noise Margin lowered *again*

Message sent to StephanieG, who was very helpful last time.
Please can I have my noise margin lowered back down to 6 again?
Although it is plugged 24/7 into the test socket, it has crept up again over the last 6 weeks, until another disconnect 10 minutes ago.
Maybe BT would consider, in future HH firmware updates, allowing users to negotiate their own SNR margin, without having to go through this forum?
Cheers,
Tim
ADSL line status
Connection information
Line state
Connected
Connection time
0 days, 0:04:13
Downstream
5,920 Kbps
Upstream
448 Kbps
ADSL settings
VPI/VCI
0/38
Type
PPPoA
Modulation
ITU-T G.992.1
Latency type
Fast
Noise margin (Down/Up)
14.2 dB / 27.0 dB
Line attenuation (Down/Up)
27.0 dB / 17.5 dB
Output power (Down/Up)
19.8 dBm / 12.4 dBm

I think it is unlikely that BT will ever update the HH to allow users to change their noise margin as it would give them even more support issues. If you wish to continue with a latency type of FAST then I suggest you invest in a router that allows you to specify the noise margin. This thread mentions 1 such router - http://community.bt.com/t5/BB-in-Home/Last-chance-saloon-really-Absolutely-fed-up/td-p/77569

How do I find noise margin etc?

Over the past few months my download speed has dropped from around 7M to around 3. Work has been going on since the start of the year to bring FTTC to the area and I assumed that this was to blame. But that work has now finished, although I personally am unable to get upgraded. I think it may now be a case of the Mods resetting my profile, but I can't seen to find the noise margin etc from my hub stats. I use HH4. Can somebody please help me with this?
Solved!
Go to Solution.

Sorry John & IMJolly, I'm not very good at this with my tablet, and have been unable to upload the results I have found, so I will attempt to type them in. Here goes.
Line stats
14.59.00, 24 Jun. (57.460000) DSL noise margin:5.90dB upstream 8.30dB downstream.
14.58.59, 24 Jun. (56.550000) DSL line rate 1084Kbps upstream 3072Kbps downstream
With regards the ADSL checker
Featured Products. Downstream. Upstream Range. Availability
WBC ADSL 2+ Up to 6. -- 4 to 8. Available
WBC ADSL2+Annex M. Up to 6. Up to1. 4 to 8. Available
ADSL MAX. Up to 5. -- 3.5 to 7.5. Available
WBC fixed rate. 2. -- -- Available
Fixed rate. 2. -- -- Available
Hope this is usable for you

Difference between noise margin and noisy line

Hi
This issue has always bugged me. Am transferring to BT Infinity next week from Sky and have mixed feelings. We live a fair way from the exchange so line attenuation is a problem but we mange to get 3.5-4Mb with absolutely zero outage using the Sky unlimited package. Our current router stats are posted below and I woud be grateful for your interpration of the noise margin figs. Is the 7db download commensurate with a quite and stable connection that bodes well for Infinity? I'm curious cos our phone line is noisy with much background niose despite the fact that we don't have any fancy gadgets and use filters just about everywhere.
I'd just like your views on noise on the line versus noise margin for broadband and how each might impact on Infinity when we're connected next week.
Many thanks for your time.
Router StatisticsSystem Up Time: 05:44:16
Port Status TxPkts RxPkts Collisions Tx B/s Rx B/s Up Time
WANPPPoA
403055
369851
0
14261
13203
05:42:39
LAN100M/Full
370239
415781
0
13527
14890
05:44:11
WLAN11M/54M
8864
0
0
150
0
05:43:58
ADSL Link Downstream Upstream
Connection Speed4093 kbps
796 kbps
Line Attenuation51 db
28 db
Noise Margin4 db
14 db

Enter your attenuation here http://www.kitz.co.uk/adsl/max_speed_calc.php
Results are approximate
If any post helps tick the star box on the left
Just cause Im paranoid dont mean they are not out to get me

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 :-)
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Is my downstream noise margin too high?

As you can see from these stats I have an issue with speed at the moment. I have an engineer coming out tomorrow. Is there any direction I can point him in looking at these numbers.
1. Product name:
BT Home Hub
2. Serial number:
+068343+NQ35147172
3. Firmware version:
Software version 4.7.5.1.83.8.173.1.6 (Type A) Last updated 11/03/14
4. Board version:
BT Hub 5A
5. VDSL uptime:
0 days, 11:21:30
6. Data rate:
19999 / 32394
7. Maximum data rate:
21878 / 70147
8. Noise margin:
6.0 / 16.6
9. Line attenuation:
0.0 / 16.0
10. Signal attenuation:
0.0 / 16.0

DLM has capped ur rate.
you may have line problems.
there are some known issues with the HH5.
do you have a openreach modem ?

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
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Resetting the Noise Margin after Upgrade to 21CN

Hello,
A few weeks ago I requested the Noise Margin resetting when I was on ADSL Max - which worked a treat However, since then I've been upgraded to 21CN (see below) and the Noise Margin has jumped back up to an average of about 9db. The line has been 100% stable, but the Download speed has dropped slightly (although the Upload is a nice 1mb! ).
Please can someone post a link so I can contact the Mods again?
Thanks.

Here's a copy of the Stats so far.
FAQ
Test1 comprises of two tests
1. Best Effort Test: -provides background information.
Download Speed
4618 Kbps
0 Kbps
7150 Kbps
Max Achievable Speed
Download speedachieved during the test was - 4618 Kbps
For your connection, the acceptable range of speeds is 2000-7150 Kbps.
Additional Information:
Your DSL Connection Rate :5888 Kbps(DOWN-STREAM), 1187 Kbps(UP-STREAM)
IP Profile for your line is - 5000 Kbps
2. Upstream Test: -provides background information.
Upload Speed
981 Kbps
0 Kbps
1187 Kbps
Max Achievable Speed
>Upload speed achieved during the test was - 981 Kbps
Additional Information:
Upstream Rate IP profile on your line is - 1187 Kbps

My noise margin was hard set, but it's not now.

Some of you will have seen me going on about low noise margins affecting download speeds recently, and that the way to fix it is to get BT to hard set the noise margin at 6dB to prevent the problem. I had to do this a while ago when I was first upgraded to 21CN, and it was fine for a while. Problem is it seems the issue has returned, so I guess it's no longer capped at 6dB any more. Just making this thread so that the moderators can try to deal with it directly, since it took 15 attempts to even get BT to do as I asked last time!
Solved!
Go to Solution.

Hi
I am sorry to see you are having problems with your BT Service
I suggest you contact the forum mods they should be able to get this problem sorted for you this is a link to them http://bt.custhelp.com/app/contact_email/c/4951
They normally reply by email or phone directly to you within 3 working days they will take personal ownership of your problem until resolved and will keep you informed of progress
They are a UK based BT specialist team who have a good record at getting problems solved
This is a customer to customer self help forum the only BT presence here are the forum moderators
If you want to say thanks for a helpful answer,please click on the Ratings star on the left-hand side If the reply answers your question then please mark as ’Mark as Accepted Solution’

Netgear noise margins

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