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sweepdog
Aspiring Contributor
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Message 1 of 21

Infinity 2 - Looked remarkebly like I1 from day 1

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Ordered Infinity 2

 

30.08.14

Engineer came, changed the top half of the face plate, and wired an ethernet extension to the office

HH5 plugged into that, and using a wired connection

Ran a speedtest, and was disappointed with speeds

Thanks to the friendly people on another forum, I went to http://speedtest.btwholesale.com and prepared this screen shot to show what I have ordered and what I have got http://gyazo.com/8107f8d877122d0380b8586d4acd49f4

Download speedachieved during the test was - 37.73 Mbps
 For your connection, the acceptable range of speeds is 31.13 Mbps-38.91 Mbps .
 Additional Information:
 IP Profile for your line is - 38.91 Mbps

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31.08.14 Contact them via twitter

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01.09.14

Heard nothing, but I noticed my IP profile had gone up slightly following a software update to the router code (sorry I didn't record all of the figures below other people have asked for this particular test

Download speedachieved during the test was - 41.75 Mbps
 For your connection, the acceptable range of speedsis 34.42 Mbps-43.02 Mbps .
 Additional Information:
 IP Profile for your line is - 43.02 Mbps
Upload speed achieved during the test was - 7.23Mbps
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02.09.14

BT rang and basically said that my speed is within the 38-56 Mbps that was predicted when I signed up

I told her that I knew I wasn't expecting to to get 70 odd Meg, but why is my IP profile so low so early on after being connected and I wasn't happy with her explanation, and asked for it to be looked into further, which she said she would do knowing I had a wired connection, however she has just emailed saying this "However, as we discussed, our initial tests suggest that your speed is within the expected range for your line and I can confirm that you're on our Unlimited Infinity 2 broadband package." - and doesn't seem to want to look into my profile 😞

 

Since then, they have obviously been doing something, as my router has been rebooted 12 times.  Now I have a stable line, these are my current statistics

 Download speedachieved during the test was - 39.1 Mbps
 For your connection, the acceptable range of speedsis 32.14 Mbps-40.17 Mbps .
 Additional Information:
 IP Profile for your line is - 40.17 Mbps
2. Upstream Test: -provides background information.
    Upload Speed
    6.37 Mbps
0 Mbps    20 Mbps
Max Achievable Speed
Upload speed achieved during the test was - 6.37Mbps
 Additional Information:
 Upstream Rate IP profile on your line is - 20 Mbps

Router stats
3. Firmware version:    Software version 4.7.5.1.83.8.173.1.6 (Type A) Last updated 31/08/14
4. Board version:    BT Hub 5A
5. VDSL uptime:    0 days, 01:04:46
6. Data rate:    7072 / 41500
7. Maximum data rate:    7002 / 41624
8. Noise margin:    6.1 / 6.0
9. Line attenuation:    0.0 / 18.4
10. Signal attenuation:    0.0 / 16.4
11. Data sent/received:    1.8 GB / 4.0 GB
12. Broadband username:    bthomehub@btbroadband.com

 

So basically does my inital IP profile of 38.91 look rather odd for Infinity 2 when I am 400m straight line distance to the cabinet, and is there a better route I can take to get this increased (my understanding was they maxed it out from day 1, and decreased it if they saw drop outs, not increase it like they did in the old days of ADSL)

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20 REPLIES 20
Guru
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Message 2 of 21

Re: Infinity 2 - Looked remarkebly like I1 from day 1

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Judging by the noise margins, your line is going at about the speed that would be expected.

 

What was the estimated speed?  You can get that at https://www.btwholesale.com/includes/adsl/main.html

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sweepdog
Aspiring Contributor
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Message 3 of 21

Re: Infinity 2 - Looked remarkebly like I1 from day 1

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http://gyazo.com/6049dbd1a480b3a3d46ce2253c03628c

So you're saying because of my noise margin, I need to look at the "FTTC Range B (Impacted)" row on the chart above?

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Distinguished Sage
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Message 4 of 21

Re: Infinity 2 - Looked remarkebly like I1 from day 1

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you certainly look as if you have a B range line
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sweepdog
Aspiring Contributor
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Message 5 of 21

Re: Infinity 2 - Looked remarkebly like I1 from day 1

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Can I just ask one further question

 

Is DLM (Dynamic Line Management) an ISP specific thing, or a BT line thing?

 

The reason I say this, I was previously on O2 LLU - getting download speeds of about 12Mbps

 

Duriing the storms of ~June 2012, our phone line gradually went ( remarkably the internet kept working albet at low speeds, despite voice being broken).  Once BT replaced the line coming it our house, we then started synching at about 9Mbps, but I never really did anything about it to tell O2 to ask if they could increase our speed again)

 

Or now I have gone to a new ISP, is this completely irrelevant?

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Guru
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Message 6 of 21

Re: Infinity 2 - Looked remarkebly like I1 from day 1

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DLM for FTTC connections is a BT Openreach (or BT Wholesale?) thing and applies equally to all ISPs.  

It is very different from the various forms of DLM that different ISPs used on ADSL.

 

It looks as if there isn't much you can do about the line.  

 

However, one thing to check is that you don't have star wiring, where an extension is taken from a junction box on the incoming feed before the master socket.  This didn't matter on ADSL (as long as the extension was properly filtered) but is a disaster for VDSL/FTTC/Infinity.  There's an excellent diagram somewhere but I can't find it right now (bandwidth reduced by wine ...)

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Distinguished Sage
Distinguished Sage
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Message 7 of 21

Re: Infinity 2 - Looked remarkebly like I1 from day 1

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Have a look here for info about DLM. It is not BT ISP's but the principle is the same.

 

http://community.plus.net/library/browsing/fttc-dlm-what-it-is-how-it-works/

lowei
Expert
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Message 8 of 21

Re: Infinity 2 - Looked remarkebly like I1 from day 1

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@gg30340 wrote:

Have a look here for info about DLM. It is not BT ISP's but the principle is the same.

 

http://community.plus.net/library/browsing/fttc-dlm-what-it-is-how-it-works/


Posting a link to plusnet ? nice!

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Distinguished Sage
Distinguished Sage
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Message 9 of 21

Re: Infinity 2 - Looked remarkebly like I1 from day 1

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I take it you know that PlusNet is owned by the BT group.

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lowei
Expert
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Message 10 of 21

Re: Infinity 2 - Looked remarkebly like I1 from day 1

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And?

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