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JimmyW77
Aspiring Contributor
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Message 1 of 20

BT BT Broadband Option 2 Issues

Hi All,

First post here, am after some advice, guidance and hopefully some info to help me tackle an issue with BT Broadband. When I speak to BT shortly I want to guarantee that I am providing them with enough information to get a satisfactory resolution. After reading through multiple forums a full-on approach seems necessary.
The basic details.
1. BT BB option 2.
2. Best sync speed (Downstream) 1834k (Monitored over 9 months, didn’t know about IP Profile or BRAS till about a month ago)
3. Best recorded speedtester.bt.com overall result over 9 months was 1456 kbps

Present results (I know the profile is low part of the issue I think and will come to that later)

Test1 comprises of Best Effort Test: -provides background information.
Download Speed
446 Kbps


0 Kbps 500 Kbps
Max Achievable Speed

Download speed achieved during the test was - 446 Kbps
For your connection, the acceptable range of speeds is 50-500 Kbps.
Additional Information:
Your DSL Connection Rate :1792 Kbps(DOWN-STREAM), 448 Kbps(UP-STREAM)
IP Profile for your line is - 500 Kbps

I’ll keep it short but will give some background. Over the last 9 months. The BT Broadband Option 2 has been slow, intermittently slow speeds and just generally poorer than expected.
My expectations for this connection are for a connection of around 2 mb. (Give or take the variations due to Attn and SNR, length i am form the exchange etc) Think broadband has people only a couple of streets away with connections of around 6mb

I’ve had 1 visit form a BT engineer following a 2 week period of sub 500k speeds. Unfortunately I don’t know what my IP Profile was set to at that time as I have been on a learning experience trying to get to the bottom of it and didn’t know to look for that previously. The sync speed was about 1700 kbps then though.
He replaced the main faceplate on the master socket with an openreach one (has the inline filtering as far as I know). He had the line re-profiled and all was well for another couple of months.
My present stats are (Via the test socket)
ADSL Link Downstream Upstream
Connection Speed 1792 kbps 448 kbps
Line Attenuation 63.0 dB 31.5 dB
Noise Margin 12.5 dB 17.0 dB

I noticed that it was slowing again about 3 weeks ago and since then I have tried to be methodical in my troubleshooting. (Knowing it can take 5 days for the IP Profile to stabilise) I have done the following in this order:
1. Reset the BT HH (It’s a HH1)
2. Removed additional peripherals form the extension lines (Skybox and extensions)
3. Swapped Microfilters on extension socket where router was seated
4. Changed routers to a DGN2000
5. Move it to the Test socket in the master socket. New Microfilter (Up for 48 hours, will leave it up to hopefully improve the IP Profile, so probably still reprofiling that atm.)

They are all new D-Link Microfilters. These were changed at the last call out 2 months ago.

So after lots of reading in the last week on Kitz, SamKnows, digitalspy and the Openworld forums. I have drawn these conclusions on my present connection stats.
My Line Attn is high. According to samknows, I am 1.69km from the exchange (as the crow flies).

http://www.kitz.co.uk/adsl/max_speed_calc.php
With a line attenuation of 63.0 db that would have a cable length of 4.6km this seems crazy to me, is it possible that my cable length could be so long? (I understand some give and take but that is nearly there and back again and then there again)
My SNRM seems low, should be at least 6 dB? Am I correct and have I worked that out correctly?
I’ve been running RouterStats –lite for 2 days and have had a couple of drops, though the router has a 48 hour uptime after its most recent move (i.e. no physical connection drop according to the router). My Speed has been 1792kbps (Via the test socked) Noise 12.8 dB constantly for both without the 2 drops. Which seem instantaneous.

So in conclusion can anyone point out where to start with BT? Are my expectations reasonable? Theory seems to suggest I could get up to 4mb. Dependant on copper quality etc.

Thanks in advance and I hope that that’s not too much info. All suggestions welcome. (My father is the BT Bill payer so this is on his behalf, if Moderators need more info please ask)

James
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Distinguished Sage
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Message 2 of 20

Re: BT BT Broadband Option 2 Issues

please can you post the adsl stats from your router may need to 'show detail' to get all stats (if hub enter 192.168.1.254 in your browser and navigate to adsl or use a-z, if netgear enter 192.168.0.1)
Have you tried the quiet line test? - dial 17070 option 2 - should hear nothing - best done with a corded phone

 

with your attenuation according to kitz about 2mb is max and on adsl2/2+  less on adslmax


Someone may then be able to offer help/assistance/suggestions to your problem



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JimmyW77
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Message 3 of 20

Re: BT BT Broadband Option 2 Issues

Thanks for quick reponse.


Yeah i've done the quiet line test. As far as my hearing goes, i'd say there where no obvious noises, though perhaps a little background hiss. (Only have a cordless phone)

 

Sorry they were in that wall of text. But for simplicity. I think this is what you were after

System Up Time 26:52:16
PortStatusTxPktsRxPktsCollisionsTx B/sRx B/sUp Time
WANPPPoA22103271782429019864885626:51:34
LAN10M/100M5113300128026:52:12
WLAN11M/54M/130M192896423142770102402075326:20:08

ADSL LinkDownstreamUpstream
Connection Speed1792 kbps448 kbps
Line Attenuation63.0 db31.5 db
Noise Margin12.5 db17.0 db

 

 

If more details are needed i htink I need to get the router in to debug mode.  Not sure if this resets its ADSL connection, so let me know if that's whats needed and i can give that a go.

 

Thanks again.

 

James

 

 

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Distinguished Sage
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Message 4 of 20

Re: BT BT Broadband Option 2 Issues

the current connection time is only 26hrs.  your noise margin is high at 12.5 as normal about 6 but the real problem is the low profile of 500.  if you stay connected 24/7 for 3/5 days then your profile should rise to 1500 which will help your download.

 

if your netgear is connected direct via filter to the test socket there is not a better connection.  was it a filtered faceplate the engineer fitted?



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JimmyW77
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Message 5 of 20

Re: BT BT Broadband Option 2 Issues

Hi,

 

Thanks again for this. yeah i'd missed the 26 hour uptime, hopefulyl the profile will get back on check shortly.

 

Am still concerned about my Line Attn. Guess i need to keep an eye on that after i next restart my router, which i am obviously reluctant to do given the fact i am trying to get a stable IP Profile.


Thanks for your help.

 

James

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Message 6 of 20

Re: BT BT Broadband Option 2 Issues

as both the routers you have used give the same figure sounds like you line has a fair detour between your home and the exchange - this is not unusual especially if older line.  But staying connected is top priority just now



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JimmyW77
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Message 7 of 20

Re: BT BT Broadband Option 2 Issues

Agreed.

 

Is there  away, outside of a call out, that I can find out what route it takes? The common sense local geography would lend the cabling route to almost LoS anyway. 

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Message 8 of 20

Re: BT BT Broadband Option 2 Issues

not sure if you would find the route of your cable  there are many similar posts but no solution to finding the route



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Message 9 of 20

Re: BT BT Broadband Option 2 Issues

line lengths are very hard to find out as they are in bt openreach's domain and they are not a customer facing so unless you know a friendly openreach engineer you will find it hard to get routing info but long line lengths are not unusual as connections are added to existing cable runs are communities expand
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JimmyW77
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Message 10 of 20

Re: BT BT Broadband Option 2 Issues

Thought as much, thanks though.

 

Once the IP Profile is up to where it should be (If it goes that way) i might look at the £90 BT Visit. If they can't get 500k increase out of it, its free.

 

Or i might have to wait for Infinity in September, given the fact i might be out of here early next year, its a bit of cost vs risk analysis.

 

Thanks again for your help.

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