Kitz Forum
Broadband Related => ADSL Issues => Topic started by: Jakg on April 11, 2015, 09:43:02 AM
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I've just moved to a new property and unfortunately the broadband performance is very very slow :(
BT have sent an engineer out but the upshot was that the line is as good as it's going to get and theres nothing that can be done beyond an infrastructure improvement (scheduled for the next couple of years so not a lost cause!). The engineer mentioned that interleaving is off and that the connection has no CRC errors (i.e. is very stable albeit slow).
Because of this I'm now trying to eek every last byte out of the connection that I possibly can.
Current Stats:
Link Rate - 672 Kbps (Down) / 416 Kbps (Up)
Line Attenuation - 63.5 dB (Down) / 31.5 dB (Up)
Noise Margin - 6.0 dB (Down) / 5.0 dB (Up)
Line:
I'm connected to this exchange - https://www.samknows.com/broadband/exchange/EASTM - which is an approximate 6.13KM (straight line) distance away.
Current hardware:
New BT master socket
ADSL Nation XTE2005 filtered faceplate (I also have a new Openreach MK3 faceplate I could use instead)
0.5m Tandy "ADSL Nation Pro+" twisted pair RJ11 cable
New Netgear modem router (think something like the Nighthawk).
My current modem doesn't support SNR adjustment (i've tried using telnet but it kills the connection no matter what).
I've just bought a Billion 8800NL based on the fact that it looks to be the best (or at least joint, with the same modem chip as the 7800NXL) modem I can buy, and that it supports SNR adjustment.
Is there *anything* else I can do?
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Your actual attenuation may actually be higher than 63.5 as this is the maximum reported by some routers. Even if the 63.5 is correct your speed is never going to be that great.
If your modem is syncing as ADSL2+ you could try setting ADSL2 or ADSL1 to see if that gives you a better sync - it sometimes works.
Other than that your only hope is FTTC which is available on some areas of your exchange. Is any information on this available from http://www.betterbroadbandsuffolk.co.uk/
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My modem is set to "Auto" - I'll try tweaking it once the Billion shows up.
I've contacted the Better Broadband Suffolk team but despite the claim of "2mbit everywhere by 2015" it looks like they've had a holdup - they are looking at Satellite later this year as an interim measure (fast, but probably restrictive latency and download limits) with FTTC some time before 2018 :(
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I don't see how SNR adjustments are going to help you, unfortunately.
Your hope list:
1. Your current modem is actually bollocksed and it's renewal will work wonders (forced ADSL2 mode may help, as above)
2. Your internal wiring is flawed - disconnect everything after the master and never, ever, ever, reconnect it
3. You have local electrical interference close to the master/modem - move everything 1 - 2 metres away from it
4. Your very close neighbours appear to have connection speeds way higher than you
5. You have sympathetic local BTOR techs who are willing to do more than a PQT-and-run
Probably some others I've missed :P
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I don't see how SNR adjustments are going to help you, unfortunately.
Your hope list:
1. Your current modem is actually bollocksed and it's renewal will work wonders (forced ADSL2 mode may help, as above)
2. Your internal wiring is flawed - disconnect everything after the master and never, ever, ever, reconnect it
3. You have local electrical interference close to the master/modem - move everything 1 - 2 metres away from it
4. Your very close neighbours appear to have connection speeds way higher than you
5. You have sympathetic local BTOR techs who are willing to do more than a PQT-and-run
Probably some others I've missed :P
ive tried another modem but it's not made a difference, there are no connected extensions in the house and if anything everyone else has a worse connection than me!
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Dayam!
Order 4G on a new BT contract and see if they'll honour coverage? :)
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With a modem/router that allows you to configure the modulation mode, you will probably find that setting it to ADSL2 will be the most beneficial.
(As The Cattery is connected via EABSE, I recognise that EASTM is just three stations to the east, by rail. ;) )
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Welcome to the forum :).
What do you get from this http://www.kitz.co.uk/adsl/adslchecker.php
Set up some router stats and put the graphs up so we can look and see if there are any problems.
http://forum.kitz.co.uk/index.php/board,46.0.html
On my long line an old Netgear DG834GT does well with DGTeam firmware on it.
Also Huawei HG612 unlocked seems to do well.
Useful tool to find distance, eg. distance your house to exchange.
http://www.freemaptools.com/measure-distance.htm
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With a modem/router that allows you to configure the modulation mode, you will probably find that setting it to ADSL2 will be the most beneficial.
? with that long line ADSL2 would not work !
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? with that long line ADSL2 would not work !
Yes ADSL2 should work - it uses the same tones as ADSL, but does so more efficiently.
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? with that long line ADSL2 would not work !
It is ADSL2+ that is the definite "no".
That is one of the reasons why I stopped using a Netgear DG834Gv5. The modulation choices were (if I am remembering correctly) G.DMT, ADSL2+ & Auto. And with my line length, I wanted to use ADSL2 mode. I moved on to a 2Wire 2700HGV which auto-selected ADSL2 mode and the result was a distinct improvement. Subsequently I have used a Huawei HG612, a Huawei HG610 and a Huawei HG622 (my current modem/router of choice) all in ADSL2 mode.
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? with that long line ADSL2 would not work !
It is ADSL2+ that is the definite "no".
With a HG612 ADSL2 does not work for me, just tried it again and reports ' No Signal'
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I have a vague recollection of you previously trying that mode -- without success. Clearly there is something quite unique about your line. :-\
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The 63.5 and 31.5 attenuation figures are the maximum values that can be expressed in some ADSL1 initialization/handshaking messages, so I expect the line is currently operating as ADSL1. So it might be worth checking if your ISP has set it to ADSL1 only, and if so you would need them to change it to ADSL2+ (I think BTWholesale based ISPs can only provision a line as ADSL1 or ADSL2+) before you can try ADSL2.
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An update to this.
I bought a 2Wire 2700HGV on eBay - but unfortunately it showed up with the wrong power cable. Not such a bargain after all!
Once I get my money back (or maybe even the power cable?) I'll try to pick one up for testing.
In the mean time, my IP profile somehow ended up at 212kbps and my connection is still "recovering". BT did an IP profile reset which got it back up to 544kbps, which was worse than before.
I bought a Billion 8800NL modem router and fitted it, and unfortunately things got even worse - I went to 480kbps (I've been careful to try to make each disconnection "clean" by disconnecting rather than just pulling the plug, and spacing any disconnections more than 3 days apart).
I've since dropped the SNR to 5db (from 6db), reconnected and I've gone up to 576kbps. Unfortunately I don't know how much of that is the reduced SNR vs the effect of just reconnecting to see if I get a higher speed.
Having got a better modem I can now provide some better info:
Router stats (from the modem):
(https://forum.kitz.co.uk/proxy.php?request=http%3A%2F%2Fi.imgur.com%2FVppizUL.png&hash=2824b0b57fe72de92e31985901d0f75b3009844b)
Router stats (the application):
(https://forum.kitz.co.uk/proxy.php?request=http%3A%2F%2Fi.imgur.com%2F0HteCCU.png&hash=e9f5e2fbda38a336b19fda27d79fc2378e7bb317)
(https://forum.kitz.co.uk/proxy.php?request=http%3A%2F%2Fi.imgur.com%2FmAqxxEb.png&hash=59e1e5b897102392a901a7d944d0cca4e0eaa0c2)
BT wholesale speedtest:
(https://forum.kitz.co.uk/proxy.php?request=http%3A%2F%2Fi.imgur.com%2FHoW4rmN.png&hash=69711322864e41b7f19dc823a384e570786832b4)
Kitz Line stats:
(https://forum.kitz.co.uk/proxy.php?request=http%3A%2F%2Fi.imgur.com%2FvaOFQl5.png&hash=e33c4535346aaad7c3c5d7aea85cc2b89b12c920)
I've been in contact with BT but theres nothing more they can or are willing to do - after the engineer visit I have a note on my account saying "line works as well as can be expected considering length" and "other properties don't even get broadband" so as far as their concerned thats it. So now I'm on my own!
My next steps are to refit my ADSL Nation filtered faceplate (back on the BT OpenReach one after dealing with BT) and to try dropping the SNR 1db every 3 days.
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And the BT Broadband availability checker...
(https://forum.kitz.co.uk/proxy.php?request=http%3A%2F%2Fi.imgur.com%2FKYfnEgo.png&hash=19e4217a68b19c0209b08086f0921ea11ee72b11)
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I would be trying this next:
http://www.sky.com/products/broadband-talk/broadband/features/
...but accepting from the word go it may end up the same or worse.
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Is LLU likely to make a difference?
Their speed checker estimates 0.3-0.9 Mbps.
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My old man had a solid 4Mb with Sky. 58dB line.
In your position, I'd be trying absolutely anything :P
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That isn't any indication of the likely speed on a line that could be above 75db!
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@Jakg
Were you not aware that the broadband was likely to be dire before you moved?
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That isn't any indication of the likely speed on a line that could be above 75db!
Absolutely :D
It's been suggested they run G.INP on their ADSL product which might help... quite a bit :D
It may be worth ordering a complete line+DSL with them. Don't cancel your existing. Let them manage the entire process. This will possibly highlight the availability of spare pairs in your area (or not) and will also give Sky some flexibility to bin the line if it's completely hopeless, perhaps. There's a 30 day period from point of install where whinging is taken seriously, I believe?
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@Jakg
Were you not aware that the broadband was likely to be dire before you moved?
Yes and no.
I'd heard anecdotal stories of "terrible" broadband in the area, but I tend to take that with a pinch of salt as a lot of people don't really understand the difference between a good and poor connection anyway.
I spoke to BT & looked online at the speed estimators and they suggested 1-3.5Mbps - somewhere in the middle of that isn't exactly fast, but would've been adequate.
I'm trying to be pragmatic and get the best out of what I have.That isn't any indication of the likely speed on a line that could be above 75db!
Absolutely :D
It's been suggested they run G.INP on their ADSL product which might help... quite a bit :D
It may be worth ordering a complete line+DSL with them. Don't cancel your existing. Let them manage the entire process. This will possibly highlight the availability of spare pairs in your area (or not) and will also give Sky some flexibility to bin the line if it's completely hopeless, perhaps. There's a 30 day period from point of install where whinging is taken seriously, I believe?
A new line + broadband from Sky is a min 12 month contract which is £286. Thats a lot of money to try just as a test!
(but the actual ongoing cost, if less than £30-£40 a month is basically irrelevant if it's any better!)
I'll do some more research into LLU long lines / Sky etc - but in the meantime I'll keep dropping my SNR and then try manually specifying the ADSL mode so that I have a solid benchmark and hopefully some more accurate line stats.
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You're already showing quite a few errors at 6dB. In reality, your line probably needs 12dB just to cope with the plethora of joints and noise ingress along that 7k route. Couple this with IPstream profiles and you are basically flogging a dead horse.
Best of luck, though :)
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When we were looking for a house two years ago I would not even look at any house where the predicted speed was below 4mb!
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Bond two (or more ) lines together ?.
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I've looked into it but it looks like it'll cost quite a bit - another line (£130 upfront + £15pm rental), another broadband contract (£15pm), some fee per line for the bonding (2x£10pm). Thats £50 a month on top of what I already pay - and I get a download limit to think about as well. I just don't think thats worth it :(
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I think you can do a lot better than that. TalkTalk will install a new line for £50 and simply broadband with a phone line is around £15 per month. You just need a load balancing router to combine the two with no ongoing monthly charge and probably unlimited downloads too.
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If you had a decent line, how high do you anticipate your usage would be?
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Back when I had an 8Mbps line - 300GB a month!
I'd written off line bonding due to the cost, but load balancing seems a lot cheaper - but not such a big advantage. Something to think about.
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That probably rules out AAISP who would do the bonding. I wondered if their rental for line only with no calls for £12 a month might get them in the price range.
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Still waiting for my 2700HGV to arrive, so in the meantime another question.
Stats at 5db SNR:
http://i.imgur.com/2EC11qP.png
Stats at 4db SNR:
http://i.imgur.com/sORslLx.png
Speed is better at 4 - but it looks like I've got interleaving on and my line is still getting much more errors (but no disconnects). How do I balance speed vs errors? I think my line would be stable at 3db - but if that means a higher sync speed, more errors but overall less throughput it's pointless.
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You need to consider the lowest value to which the DS SNRM drops per 24 hour cycle. Then your "tweak value" is defined by the following --
DS SNRMmin - DS SNRMtweak = 3 dB (1)
Rearranging (1) --
DS SNRMtweak = DS SNRMmin - 3 dB (2)
By making use of equation (2) you ensure that there is 3 dB "headroom" and, hopefully, the CRCs and ESs do not dominate the connection.
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Another update
Bought a 2Wire 2700HGV (well two with one PSU).
I got a faster connection (1050kbps) but the router appears to lose connection after several hours. The log suggests its going to reconnect, but it doesn't actually seem to do so automatically. I reconnect it, it works for a while - then dies.
Watching the stats it seems to be very aggressive at trying to drop my SNR so I suspect that it's just too aggressive for the line? Confused why it can't reconnect though. I've tried 2 units, both with different firmware versions. Same PSU with both, though.
Back on the Billion 8800NL and getting 800kbps.
Both were using ADSL (G DMT). Will try using ADSL2 later.
I forgot to mention - my DSLAM is Infineon. I've seen online that supposedly your better matching vendors. My Billion is broadcom but the 2Wire used an Infineon chip. Any other good Infineon ones?
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:hmm: Hmm . . . Infineon is owned by Lantiq and Lantiq is now part of Intel.
I'm not sure which devices have an Infineon chip-set. :-\
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:hmm: Hmm . . . Infineon is owned by Lantiq and Lantiq is now part of Intel.
I'm not sure which devices have an Infineon chip-set. :-\
best I could come up with is DrayTek - 2820n router or 120 modem (£20 on eBay)
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I always found Broadcom chipset routers to work best with Infineon DSLAMs/MSANs.
Although, most of the newer TalkTalk routers use Infineon chipsets, I believe.
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best I could come up with is DrayTek - 2820n router or 120 modem (£20 on eBay)
Now that I am on an FTTC connection, I have a stack of ADSL modems/routers that are now useless, one of these being a Draytek 120. Perhaps you would like it for a small cost?
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I think the 2Wire 2700HGV is not Infineon / Lantiq based.
There's a table of various TI, Infineon then Lantiq models here: http://wiki.openwrt.org/doc/hardware/soc/soc.lantiq
I think a lot of the difference between CPE chipsets is trading speed for stability. My ancient AR7 based netgear DG834G v3 tends to connect at a higher line rate than a Technicolor 582n and TP-Link TD-W8970, but the old AR7 does so with higher error rates, which makes it more likely for the DLM to take action resulting in a lower speed. I'm connected to TSTC exchange equipment.
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Just to add that I cannot get a connection the exchange using ADSL2 (not ADSL2+). It's G.DMT or nothing.
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It may be what I said before (http://forum.kitz.co.uk/index.php/topic,15313.msg284745.html#msg284745) - your ISP has provisioned your line as ADSL1 only, in that case you'd have to get them to change it. It's also possible the line is just too long to get a connection on ADSL2, whereas ADSL1 just barely manages to work.
Plusnet's usual reasoning for provisioning under 4Mb speed estimate lines as ADSL1 is that ADSL2+ might be worse on such long lines. Of course that's true, it might be worse, but it's just as true as saying ADSL1 might be worse than ADSL2. You won't know which is better or worse until you try them.
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It may be what I said before (http://forum.kitz.co.uk/index.php/topic,15313.msg284745.html#msg284745) - your ISP has provisioned your line as ADSL1 only, in that case you'd have to get them to change it. It's also possible the line is just too long to get a connection on ADSL2, whereas ADSL1 just barely manages to work.
Plusnet's usual reasoning for provisioning under 4Mb speed estimate lines as ADSL1 is that ADSL2+ might be worse on such long lines. Of course that's true, it might be worse, but it's just as true as saying ADSL1 might be worse than ADSL2. You won't know which is better or worse until you try them.
i think getting such an explanation out of BT is unlikely!
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I wonder if it might be possible for our special agent, Black Sheep, to look up your exchange details?
Perhaps the exchange equipment has not been upgraded from the original G.Dmt-only kit . . . :-\
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I wonder if it might be possible for our special agent, Black Sheep, to look up your exchange details?
Perhaps the exchange equipment has not been upgraded from the original G.Dmt-only kit . . . :-\
My exchange is fairly up-to-date - theres FTTC available, for example (just not to me!)
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My exchange is fairly up-to-date - theres FTTC available, for example (just not to me!)
There can be a VDSL2 service (FTTC) available but the exchange based ADSL equipment can still be G.Dmt only. Why? Because the cabinets are fed from a fibre head-end that is located in a "more major" exchange.
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21CN WBC, and Sky and TalkTalk LLU are all available according to the earlier samknows screenshot.
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21CN WBC, and Sky and TalkTalk LLU are all available according to the earlier samknows screenshot.
Ah, so b*cat retreats into his brown-paper bag . . . :paperbag:
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Shouldn't ADSL2 be better on longer lines since it takes better advantage of the available frequency spectrum?
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Shouldn't ADSL2 be better on longer lines since it takes better advantage of the available frequency spectrum?
Yes, indeed. That is why I always recommend trying that mode of modulation.
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If you want i can send you an HH5A at no cost it will work on ADSL and VDSL lines it should work on a TT ISP line.
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If you want i can send you an HH5A at no cost it will work on ADSL and VDSL lines it should work on a TT ISP line.
Thanks, but I think I'd rather something that allowed me more control. That is unless the HomeHub 5 is known for having particularly good ADSL performance?
I'm currently looking for a cheap DrayTek 120 modem on eBay which uses the same Lantiq (aka Infineon) chipset.
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Thanks, but I think I'd rather something that allowed me more control. That is unless the HomeHub 5 is known for having particularly good ADSL performance?
Not sure about ADSL performance not much tweaking can be done on the HH5A.
[Moderator edited to fix the broken [quote][/quote] tag.
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I picked up a DrayTek 120 off eBay (uses an Infineon chipset to match the one in my cab), worse performance than when using my Billion 8800nl.
Specifically, 544/448kbps Up/Down at 8db SNR. I don't know where it got 8 from as my line will do 5 easily, but theres no way I can tweak it to improve on that.
Stats:
--------------------------- ATU-R Info (hw: annex A, f/w: annex A) -----------
DSL Modulation : G.DMT
State : SHOWTIME
DS Actual Rate : 544000 bps US Actual Rate : 448000 bps
DS Attainable Rate : 704000 bps US Attainable Rate : 636000 bps
DS Path Mode : Interleave US Path Mode : Interleave
DS Interleave Depth : 4 US Interleave Depth : 4
NE Current Attenuation : 77 dB Cur SNR Margin : 8 dB
DS actual PSD : 14. 7 dB US actual PSD : 12. 6 dB
ADSL Firmware Version : 332201_A
-------------------------------- ATU-C Info ---------------------------------
Far Current Attenuation : 31 dB Far SNR Margin : 7 dB
CO ITU Version[0] : 00004946 CO ITU Version[1] : 0000544e
DSLAM CHIPSET VENDOR : < IFTN >
(I know I'm flogging a dead horse)
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Please leave it to "settle" and then show us the statistics after 24 hours have elapsed.
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Please leave it to "settle" and then show us the statistics after 24 hours have elapsed.
I'm not actually sure how to do that!
I've never used a standalone modem before, but once it's connected to a router I don't seem to be able to get to the gui / telnet into it - because it's "past" the router.
For testing I had my laptop hooked up acting as a router initiating the PPPoA/E connection, which then allowed me to telnet into it as well. I couldn't do this (and be unable to connect on any other PC) for 24 hours.
When I reconnected my Billion I instantly when back to 640kbps @ 5.5dB.
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Hmm . . . I see your problem. :(
How were you planning on using the Vigor 120, if your initial tests proved to be a positive improvement?
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Hmm . . . I see your problem. :(
How were you planning on using the Vigor 120, if your initial tests proved to be a positive improvement?
I had not thought that far ahead!
I did manage to get it working through my Billion 8800nl router - but I then lost the ability to see any stats, SNR margin, sync speed etc. So if it worked - then I could of used it that way.
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Basically, I am you :-)
There is definitely hope but it might need some cash and help. And it might just be a shocking line, poor quality MPF or interference outside the house. Tiny things in the house make a vast amount of difference with attn so high and signals so weak.
I have a ridiculously long line, 63.5 dB ds attn supposedly, four miles from the exchange Broadford Isle of Skye, and get 1.75 Mbps per line.
I suggest.
(0) read all my posts, esp the early ones, and a couple of v recent ones.All known tips there.
(1) Mains filtering.
(2) Try Netgear DG834v3 (not no G, ie non-wireless) from ebay £10. Must be v3. A savage performer, needs latest f/w., might be specific to TI exchanges. Also DLink DSL-320B from aa.net.uk shop only! so it comes preconfigured as a modem, not a really bad router. Dirt cheap. These I am using right now, but am considering going back to give the Netgear modems another try for comparison to refresh my memory.
(3) at least talk to Andrews & Arnold aa.net.uk. Talk to tech support and sales. If your line is broken, they will sort it or your money back. A&A will beat BT Openreach up for you if needed.
(4) shorten all internal phone cables and dsl cables to nothing and get rid of all phones and extensions.
(5) if need be, book BT Openreach to do a “change point of entry” if this will help you shorten links and get your modem right close the the NTE5 and make it be where you want to work. Forget wireless, don't let the wireless coverage placement wag the shortness dog. Get a separate high quality wireless access point and place that where it suits you best,meith a long length of Ethernet cable to it if needed.
I use A&A with three lines bonded together, and combined upstream as well as downstream. My line is just as long as yours, and I get a combined 5.2-5.5 Mbps ds throughput.
When youve read everything Ive ever written :-) do come back and ask anything. But I would let A&A do all the work, that's what they get paid to do.
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Without blowing my own trumpet, I worked as a consultant dealing with ADSL installations for my customers so I've dealt with this a lot. So there is hope as I've seen it.
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Basically, I am you :-)
Hi, me! :D(0) read all my posts, esp the early ones, and a couple of v recent ones.All known tips there.
Reading :)(1) Mains filtering.
My router (+ switch, NAS, Access Point & DECT phone) are run off an APC UPS, I think this filters as well? If not, any recommendations?(2) Try Netgear DG834v3 (not no G, ie non-wireless) from ebay £10. Must be v3. A savage performer, needs latest f/w., might be specific to TI exchanges. Also DLink DSL-320B from aa.net.uk shop only! so it comes preconfigured as a modem, not a really bad router. Dirt cheap. These I am using right now, but am considering going back to give the Netgear modems another try for comparison to refresh my memory.
Ok, will set up a search on eBay for the Netgear. The DLink one looks a bit more than I want to pay for a quick test.(3) at least talk to Andrews & Arnold aa.net.uk. Talk to tech support and sales. If your line is broken, they will sort it or your money back. A&A will beat BT Openreach up for you if needed.
I've spoken to them - but they didn't seem hopeful of much performance improvement, rather better contention / fault resolution. I don't think my lines broken - it's just physics. They estimated a line length of 7.2km. They seem like a nice company - but I really, really don't want to lose unlimited downloads, and I just can't see much of an upside for the significant increase in cost.(4) shorten all internal phone cables and dsl cables to nothing and get rid of all phones and extensions.
I'll forgive you for not reading the back story - but I have one single phone socket, with a 0.5m cable going to the modem, and a 2-3m cable going to the dect phone base station. No extensions or other sockets connected.(5) if need be, book BT Openreach to do a “change point of entry” if this will help you shorten links and get your modem right close the the NTE5 and make it be where you want to work. Forget wireless, don't let the wireless coverage placement wag the shortness dog. Get a separate high quality wireless access point and place that where it suits you best,meith a long length of Ethernet cable to it if needed.
My modem is 0.5m from the master socket. The BT guy moved the master socket, but it's on the front of the house so realistically it couldn't get any nearer - at best I might lose 5m by moving it upstairs but that seems a bit pointless on a 7000m line!
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What is mobile coverage like at your location ?
I work with clients in rural Dorset, many of whom have ADSL speeds same, or worse than, yours.
A Huawei 5772 fitted with an external high gain antenna has solved a few of my clients issues.
3 is particularly good often getting 10+ MB downloads. Latency is of course higher, usually around 80-100ms.
Cheers
Sent from my Nexus 5 using Tapatalk
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What is mobile coverage like at your location ?
Indoors, non-existent.
When we first moved in I tethered on 3 with a phone in the window and it was a smidge faster but highly unstable. And again download limit makes it a non-starter :(
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Can't do much about the download limits - sorry.
But I have had excellent results with a 15db, directional antenna.
On one location the "phone at the window" was lucky to get a signal at all I managed to have line of site to a mobile base station 6km away.
Got better than -70db on the signal strength meter.
Cheers
Sent from my Nexus 5 using Tapatalk
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1. I use an APC UPS as well, and I filter the _output_ from that. Reasoning - the pseudo-sinewaves from these things can be quite ugly staircases. I use a Belkin PureAV mains unit, and more recently a second layer of conditioning filtering beyond that is about to be fitted. Total paranoia.
2. I have a couple of split-doughnut ferrites (ebay, or Maplin) on the dc supply to the modem.
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1. I notice you're running one dect basestation off the NTE5. I had to *double-microfilter* mine, I used a BT Pressac faceplate, and then added an ADSL Nation dangly filter in before the phone. The reason was that it used to stuff the SNR everytime it went on-hook->off-hook.
I've now got rid of the phone altogether, and so have no microfilters at all.
2. About the 5m of internal wiring. I decided that it would be extremely worthwhile to move my NTE because of the pickup of electrical noise inside the house. You're right that 5m seems nothing after the huge length that's gone before, but your signal is v weak and local interference sources relatively v loud. That was my thinking. So that's my other tip for wasting another > £100 of your money. :-)
I decided a decade ago, that I had to get on and do it all, that was the only way to know, even if some was more superstition than knowledgeable electronics.
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1. I use an APC UPS as well, and I filter the _output_ from that. Reasoning - the pseudo-sinewaves from these things can be quite ugly staircases. I use a Belkin PureAV mains unit, and more recently a second layer of conditioning filtering beyond that is about to be fitted. Total paranoia.
Ok - I've bought a well reviewed Tacima extension lead.2. I have a couple of split-doughnut ferrites (ebay, or Maplin) on the dc supply to the modem.
Done - just waiting on delivery from China.1. I notice you're running one dect basestation off the NTE5. I had to *double-microfilter* mine, I used a BT Pressac faceplate, and then added an ADSL Nation dangly filter in before the phone. The reason was that it used to stuff the SNR everytime it went on-hook->off-hook.
Ok - I can't say I've had a problem when the phone goes on / off hook, but I have a bunch of spare (ISP supplied) microfilters so why not.2. About the 5m of internal wiring. I decided that it would be extremely worthwhile to move my NTE because of the pickup of electrical noise inside the house. You're right that 5m seems nothing after the huge length that's gone before, but your signal is v weak and local interference sources relatively v loud. That was my thinking. So that's my other tip for wasting another > £100 of your money. :-)
I'm going to have to disagree here - my setup is typical, BT phone cable comes along road on telephone poles, down the front of the house and into the ground floor. It doesn't go around the house or anything.
It could come up into the loft or upstairs and save me a couple of m of cable, but not only would it be very impractical, but I also can't see it making a difference - I had an ancient "junction box" and some bodged internal wiring replaced with a new socket and cable from BT, and lost about 3m of phone cable in the process, and got no improvement. At least it was free - I can't justify paying £130 to get them to move it (nor do I want them to).
I also got a Netgear DG834 v3 as per your recommendation (gotta love eBay - £6.50 delivered). Currently syncing at 800kbps, which is pretty decent - for reference, my Billion has been stuck at 640kbps @ 5db recently, and I've been unable to get back to the 700-ish range I was at before (yes, I've been keeping 5 days between all my disconnects). Will let it run for a few more days and see how it goes.