FTTC IP Profile for your line

Just after some knowledge around the FTTC IP Profiles, mines below

IP Profile for your line is -38717 Kbps and my up is 10000


My Question is should my down profile not be 40000 ? i have downloaded at 4.7 mb/s on the above line profile. is the above line profile correct ?

oh im on AQUISS

any info on this would be geat or how the profile system works

believe 38.7 is the highest it goes to.

As orly says, the device the engineer showed me read 40000/10000 but the BT site also shows me 38717/10000 (I too can download at 4.3 / 4.5MB/sec).

I wouldn't worry about the profile unless it drops

The highest IP Profile is 38717, which you have.

If a speed test or anything shows much over 38000kbps, (I think the highest valid one I have seen on these forums was something like 38395kbps), then whatever you are using to test is getting it wrong.

Ookla-based testers can do that, and if they are run on a system with Kaspersky or Avira can record a few hundred-thousand kbps.

It's all to do with buffering and sample selection.

My profile has dropped due to a suddenly heat-sensitive modem, which is due to be replaced. It was causing multiple connects and reconnects (DSL sync was being lost and regained every minute or so).

The last time I had problems (also due to a faulty modem) the engineer had to make a phone call to get DLM started again to reset the profile. Shouldn't it go up on its own or is the system as unforgiving as that on BT's ADSL platform?

TIA

DrT

Edited by deleted (Mon 04-Apr-11 22:40:44)

BillFord reports that his IP Profile is quite unstable, but adjusts upwards much more quickly than the IPStream and WBC ones.

Whether there has been a target noise margin effect on your line would only show up with one of the VDSL routers that have been tried by others.

That could give rise to an interesting conversation with support if it did show it had been raised.

You: My target noise margin has been raised due to a faulty modem that you gave me.

Them: How do you know that Sir?

Y: I used a VDSL router of my own instead of your modem.

T: You are required to use the supplied modem at all times Sir, so you have broken the terms of your guarantee. Goodbye Sir.

Seriously I expect if there has been an effect it will correct itself more quickly than the old system as well.

Will this be your third modem then?

Hi

Yes, it will be my third modem. BT confirmed that the first batch was faulty and made sure that the replacement was from a different batch.

If the DLM is 'better' than that applying to ADSL, I wonder why the engineer made a phone call to get it reset.

All will be clear in the end.

Cheers

DrT

In reply to a post by DrTeeth:

... I wonder why the engineer made a phone call to get it reset

Perhaps because as we all know, BT engineers are paragons at logical progression, just like dentists.

I do greatly admire dentists. There are few jobs where you don't have the luxury of a second chance if you screw up, even to a minor degree.

I had infinity installed yesterday and the Engineer showed me on his machine 40Mb/10Mb
I just checked my IP Profile and it's set the same as yours 38717Kbps - 10000Kbps
When I checked y'day I was getting 37.49Mb - 8.22Mb, this morning I got 37.51Mb - 8.14Mb but here's the thing that I don't understand y'day when I checked my LapTop I got 14.65Mb - 6.01Mb, Today I have 30.29Mb - 7.90Mb both with signal strengths of 75%

iechyd da

You won't get the max speed on FTTC, just like on ADSL you won't get 8mbps.

IP profiles are there to stop data from crashing on the recieving end and therefore requesting the data again.

Wireless speeds on FTTC are almost always well below wired, and fluctuate a lot. The signal strength may be 75%, but you should also check the transmission speed as that can be subject to interference even with a good signal. Mine varies a lot in the evening, to the point were a wireless speed test can show well under 10Mbps downstairs, but upstairs or wired over 36Mbps.

The throughput also depends greatly on which ISP you are with, just like it did on ADSLx.

If you run the BT speed test that shows you the profile.

If you have a fixed IP address you could run the tbb Quality Monitor which would show up any disconnections.

In reply to a post by krazykizza:

You won't get the max speed on FTTC, just like on ADSL you won't get 8mbps.

IP profiles are there to stop data from crashing on the recieving end and therefore requesting the data again.

If this is the case, why do LLU services work fine without IP Profiles?

You wouldn't get the max without profiles anyway, layer tunnelling overheads take care of that. You've got a TCP/IP connection wrapped in a PPP connection wrapped in an Ethernet/ATM connection - which accounts for the discrepancy between raw throughtput and actual achievable TCP/IP throughout

IP Profiling, to my mind, has no purpose atall other than being obtuse...

Edited by deleted (Sun 05-Feb-12 12:43:29)

In reply to a post by izools:

In reply to a post by krazykizza:

You won't get the max speed on FTTC, just like on ADSL you won't get 8mbps.

IP profiles are there to stop data from crashing on the recieving end and therefore requesting the data again.

If this is the case, why do LLU services work fine without IP Profiles?

You wouldn't get the max without profiles anyway, layer tunnelling overheads take care of that. You've got a TCP/IP connection wrapped in a PPP connection wrapped in an Ethernet/ATM connection - which accounts for the discrepancy between raw throughtput and actual achievable TCP/IP throughout

IP Profiling, to my mind, has no purpose atall other than being obtuse...

Not quite a year old this thread

In reply to a post by BatBoy:

In reply to a post by izools:

In reply to a post by krazykizza:

You won't get the max speed on FTTC, just like on ADSL you won't get 8mbps.

IP profiles are there to stop data from crashing on the recieving end and therefore requesting the data again.

If this is the case, why do LLU services work fine without IP Profiles?

You wouldn't get the max without profiles anyway, layer tunnelling overheads take care of that. You've got a TCP/IP connection wrapped in a PPP connection wrapped in an Ethernet/ATM connection - which accounts for the discrepancy between raw throughtput and actual achievable TCP/IP throughout

IP Profiling, to my mind, has no purpose atall other than being obtuse...

Not quite a year old this thread

Oh yeah... haha oops