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[covlad1987]

not sure this is in the right place wondering if someone can help when i was adsl

Downstream:   54.93 Mbps
Upstream:   10.28 Mbps

1. Product name:   BT Home Hub
2. Serial number:
3. Firmware version:   Software version 4.7.5.1.83.8.173.1.6 (Type A) Last updated 04/02/14
4. Board version:   BT Hub 5A
5. VDSL uptime:   0 days, 06:59:45
6. Data rate:   10529 / 56252
7. Maximum data rate:   10789 / 54807
8. Noise margin:   6.2 / 5.8
9. Line attenuation:   0.0 / 20.5-------------- 1.4kilometer to exchange
10. Signal attenuation:   0.0 / 20.2-------------- 0.0

[kitz]

Sorry if I missed something, but Im not quite sure what info you are wanting, so Im going to assume that you are wanting us to have a look at your line stats.

>>> Line attenuation:   0.0 / 20.5-------------- 1.4kilometer to exchange

This will actually be distance to the green cab.   We havent yet been able to figure out how the HH5 calculates the attenuation, but Im guessing its measured at a certain fixed frequency of xkHz.   Most of the fttc modems measure across the individual bands, but since the engineers JDSU also gives the one figure, it wouldnt surprise me if its using the same tone as on adsl2+, because weve also seen some correlation that this figure seems to more or less equate to give what was distance to the exchange as distance to the cab.   We'd need to see more evidence yet though before we can say this for sure.

BE is probably your best bet for giving line stat indications, but it does look like youre not getting the full upstream possibly one of the bands isnt in use...  your SNRm doesnt seem to have any more to give.
To me the downstream that doesnt look too bad, I was looking at an FTTC line on sat which was only syncing at 33Mbps whilst the HH5 reported 19dB atten, but I suspect theres something physically wrong with that particular line and it should be getting 50Mb speeds, but I think it may be impacted and on a busy cab :/ 

What does BTw estimate for your line?   http://www.kitz.co.uk/adsl/btwchecker.htm

[Bald_Eagle1]

I'd be interested to see a screen shot of those stats from a HH5.

If you really are 1.4 km from the cabinet, with SNRM around 6 dB & overall DS attenuation of 20.5dB, your connection is achieving extremely high speeds.

My modem is around 1000m to 1100m from the cabinet & the highest sync speed my connection has ever achieved was around 35 Mbps & that was a long time ago, before assumed increased crosstalk from new users being added to the cabinet's DSLAM drove it down (in stages) to around 21 Mbps or so.

My HG612 modem has reported an overall DS attenuation value of 24.5 dB since its firmware was updated by BT.


These are the stats per band for my connection as obtained at 14:00 this afternoon:-

Code: [Select]

Max: Upstream rate = 4993 Kbps, Downstream rate = 24168 Kbps
Bearer: 0, Upstream rate = 4920 Kbps, Downstream rate = 21264 Kbps

Discovery Phase (Initial) Band Plan
US: (7,32) (871,1205) (1972,2782)
DS: (33,859) (1216,1961) (2793,3970)
Medley Phase (Final) Band Plan
US: (7,32) (871,1196)
DS: (33,859) (1216,1932)
  VDSL Port Details   Upstream   Downstream
Attainable Net Data Rate:      4993 kbps     24168 kbps
Actual Aggregate Tx Power:        6.6 dBm      12.7 dBm
====================================================================================
  VDSL Band Status U0 U1 U2 U3 U4 D1 D2 D3
  Line Attenuation(dB): 8.1 52.6   N/A   N/A   N/A 21.6 64.6   N/A
Signal Attenuation(dB): 8.1 52.0   N/A   N/A   N/A 30.2 64.4   N/A
SNR Margin(dB): 6.3 6.3   N/A   N/A   N/A 6.2 6.3   N/A
TX Power(dBm): -1.4 5.8   N/A   N/A   N/A 11.7 6.1   N/A

You can see that my connection's DS band D1 Signal is attenuated significantly more than Line attenuation (probably as a result of crosstalk).



Using your 20.5dB attenuation value in Kitz's Maximum adsl speed calculator,  does indeed produce an approximated line length of 1.4 km.

However, from analysing many VDSL2 connection stats, I would make a 'guesstimate' that your distance from the cabinet is more likely to be around 700m, possibly less.

[covlad1987]

Sorry if I missed something, but Im not quite sure what info you are wanting, so Im going to assume that you are wanting us to have a look at your line stats.

>>> Line attenuation:   0.0 / 20.5-------------- 1.4kilometer to exchange

This will actually be distance to the green cab.   We havent yet been able to figure out how the HH5 calculates the attenuation, but Im guessing its measured at a certain fixed frequency of xkHz.   Most of the fttc modems measure across the individual bands, but since the engineers JDSU also gives the one figure, it wouldnt surprise me if its using the same tone as on adsl2+, because weve also seen some correlation that this figure seems to more or less equate to give what was distance to the exchange as distance to the cab.   We'd need to see more evidence yet though before we can say this for sure.

BE is probably your best bet for giving line stat indications, but it does look like youre not getting the full upstream possibly one of the bands isnt in use...  your SNRm doesnt seem to have any more to give.
To me the downstream that doesnt look too bad, I was looking at an FTTC line on sat which was only syncing at 33Mbps whilst the HH5 reported 19dB atten, but I suspect theres something physically wrong with that particular line and it should be getting 50Mb speeds, but I think it may be impacted and on a busy cab :/ 

What does BTw estimate for your line?   http://www.kitz.co.uk/adsl/btwchecker.htm

hi that link is a problem if i use my phone number it only gives 1 but if i put my address it give me a load of info

Line attenuation:   0.0 / 20.5 is that to the green cabinet if so thats about 400 to 500 meters

[covlad1987]

got it to work on my phone number

this is from bttester
Download speedachieved during the test was - 37.3 Mbps
 For your connection, the acceptable range of speedsis 43.88 Mbps-54.85 Mbps .
 Additional Information:
 IP Profile for your line is - 54.85 Mbps

[NewtronStar]

Hi looking at your IP profile of 54.85 Mbps and comparing that to the BT speedtest of 37.3 Mbps you may be loosing 10-15 Mbps somewhere in your house  , if you had an IP profile of say 39.0 Mbps then I would have said that's down to the DLM banding your line due to errors but in your case the IP Profile seems to match the availabilty checker (FTTC range B of high impacted 53 Mbps)

could I ask how long since you noticed a drop in downstream speed & what was the maxium downstream speed you have ever seen ?

[Bald_Eagle1]

got it to work on my phone number

 Additional Information:
 IP Profile for your line is - 54.85 Mbps

Using the rule that IP Profile is 96.79% of sync speed for VDSL2 services, your sync speed at the time of the test would have been 56.67 Mbps.

However, we have seen that IP Profile isn't always updated when the connection itself resyncs as VDSL2 resyncs can be so quick (less than 20 seconds) that the PPPoE session (& IP address) don't change.

BT's IP Profile needs a new PPPoE session to be initiated for it to refresh.

This was quite an issue before we discovered that as quite often, users could have a much higher 'stuck' IP Profile than actual sync speed.

This left users complaining that throughput was nowhere near IP profile & ISPs/BT arguing that there was nothing wrong.

In non-contended situations, with no external network issues, throughput should be around 94% to 97% of IP Profile.



We are not yet sure how accurately the HH5 used as a combined modem/router reports actual connection stats.

If you really wish to monitor your connection's performance over a period of time, confirming interleaving depth, error counts, SNRM fluctuations, timing of resyncs etc. you would need an unlocked Huawei HG612 modem & to use the HH5 as a router only.

[covlad1987]

Hi looking at your IP profile of 54.85 Mbps and comparing that to the BT speedtest of 37.3 Mbps you may be loosing 10-15 Mbps somewhere in your house  , if you had an IP profile of say 39.0 Mbps then I would have said that's down to the DLM banding your line due to errors but in your case the IP Profile seems to match the availabilty checker (FTTC range B of high impacted 53 Mbps)

could I ask how long since you noticed a drop in downstream speed & what was the maxium downstream speed you have ever seen ?

just trying to find out what sort of speed il get after a 10day stable line

[Bald_Eagle1]

Are your speed tests carried out wirelessly or over ethernet cable between the HH5 & the testing PC?

There is usually quite a speed drop when conducting speed tests wirelessly.

[covlad1987]

Are your speed tests carried out wirelessly or over ethernet cable between the HH5 & the testing PC?

There is usually quite a speed drop when conducting speed tests wirelessly.

hi using ethernet cable

noticed a drop on the sync now down from 54mbps to 47mbps going to test on the master socket test plug


"Quiet Line Test" nothing no noise

just pluged the openreach modem in conntected to the router download speed dropped

[covlad1987]

qst

what is the engineer ment to do i mean when i was with talktalk and sky he pluged something into the master socket and left came back pluged in the modem and my boardband worked nr on the right speed i was paying for

bt contractor comes asks for the bt hub asks me are you putting modem there yes made up a rj11 cable plugs it in makes sure internet works and leaves,,,,,,,,no line test never checks the green cabinet,,,,,,,,so i take it bt hub 5 is a plug and play

[waltergmw]

Hi Coviad,

BT Openreach's subcontractors use a modem and inverter at the PCP green cabinet just to see the DSL sync LED comes on.

They then remove your existing modem and just replace it with the new VDSL one PAYING NO ATTENTION WHATSOEVER TO ANYTHING IN YOUR HOUSE EXCEPT THAT THERE IS A FILTER OF SOME SORT FITTED. Again they will run a speed test, usually not BT's - as part 2 will always fail until the job is recorded in BT's database as completed. If you try to complain about your achieved throughput they will say that the speed is a reasonable percentage of the forecast speed and then scarper !
Some do suggest you must wait 2 days or 14 days before contacting your ISPs help desk.
Some even say the speed will increase over time !

Whilst some may think this makes a mockery of trading standards, most of the subcontractors are given a target to install many services in a day.
It's hardly surprising they all need running shoes to escape the wrath of the end users !!

Kind regards,
Walter

[covlad1987]

Hi Coviad,

BT Openreach's subcontractors use a modem and inverter at the PCP green cabinet just to see the DSL sync LED comes on.

They then remove your existing modem and just replace it with the new VDSL one PAYING NO ATTENTION WHATSOEVER TO ANYTHING IN YOUR HOUSE EXCEPT THAT THERE IS A FILTER OF SOME SORT FITTED. Again they will run a speed test, usually not BT's - as part 2 will always fail until the job is recorded in BT's database as completed. If you try to complain about your achieved throughput they will say that the speed is a reasonable percentage of the forecast speed and then scarper !
Some do suggest you must wait 2 days or 14 days before contacting your ISPs help desk.
Some even say the speed will increase over time !

Whilst some may think this makes a mockery of trading standards, most of the subcontractors are given a target to install many services in a day.
It's hardly surprising they all need running shoes to escape the wrath of the end users !!

Kind regards,
Walter

thankyou for the good advice there your right about one thing all need running shoes to escape the wrath of the end users !!

il wait 11 days before i lodge a complaint if my sync speed does go up

[covlad1987]

not sure this is in the right place wondering if someone can help when i was adsl

Downstream:   54.93 Mbps
Upstream:   10.28 Mbps

1. Product name:   BT Home Hub
2. Serial number:
3. Firmware version:   Software version 4.7.5.1.83.8.173.1.6 (Type A) Last updated 04/02/14
4. Board version:   BT Hub 5A
5. VDSL uptime:   0 days, 06:59:45
6. Data rate:   10529 / 56252
7. Maximum data rate:   10789 / 54807
8. Noise margin:   6.2 / 5.8
9. Line attenuation:   0.0 / 20.5-------------- 1.4kilometer to exchange
10. Signal attenuation:   0.0 / 20.2-------------- 0.0

still no better modem stats 10days later and still getting a bad speed when testing on bttester

4. Board version:   BT Hub 5A
5. VDSL uptime:   0 days, 00:14:47
6. Data rate:   11037 / 48793
7. Maximum data rate:   11198 / 56327
8. Noise margin:   6.1 / 6.4
9. Line attenuation:   0.0 / 20.5
10. Signal attenuation:   0.0 / 20.2

VDSL Line Status
Connection Information
Line state:   Connected
Connection time:   0 days, 00:15:17
Downstream:   47.65 Mbps
Upstream:   10.78 Mbps

[covlad1987]

bt tec  Debpriya: You should be getting around 68 mbps 


thay did ask me if a ran a test in safemode iv not,any reason why i should run in safemode ?

iv ran a test in safemode and