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JuicyFruit
Aspiring Contributor
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Message 1 of 8

New Infinity Connection - No DLM 'training' ?

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Hi all,

 

I've had BT Infinity for 2 weeks now and since then the connection has been solid and I've had no dropouts or adjustments in speed. I'm not complaining about my speed as such however I was expecting a few dropouts and changes in speed as I've had with other providers in the past. Is this a normal occurence do you think?

Thanks

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Distinguished Sage
Distinguished Sage
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Message 2 of 8

Re: New Infinity Connection - No DLM 'training' ?

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That is not always the case, if the line is stable and the error rate is low. I would just leave things as they are.

 

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JuicyFruit
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Message 3 of 8

Re: New Infinity Connection - No DLM 'training' ?

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Thanks for the reply, and yes, the speed is fine and in line with what can be expected with the noise margin, so hopefully it stays that way 🙂

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Distinguished Sage
Distinguished Sage
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Message 4 of 8

Re: New Infinity Connection - No DLM 'training' ?

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index.jpg

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Distinguished Sage
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Message 5 of 8

Re: New Infinity Connection - No DLM 'training' ?

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DLM doesn't do anything unless it detects a problem.

This guff about it testing a line at different speeds is just that.
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MrBelter
Expert
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Message 6 of 8

Re: New Infinity Connection - No DLM 'training' ?

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@Webby wrote:
DLM doesn't do anything unless it detects a problem.

This guff about it testing a line at different speeds is just that.

Its not guff, its not just for a different product not FTTC.

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Distinguished Sage
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Message 7 of 8

Re: New Infinity Connection - No DLM 'training' ?

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Actually it is guff.

The 10 day myth actually arose from the inital 10 days in which BT Wholesale use to calculate a maximum stable rate and a fault threshold rate for ADSLx services. This was then twisted into people thinking DLM messes around with noise margins etc to find the best speed during those 10 days, which just isn't true.

DLM behaves the same on day 1 as it does on day 1001 of a circuits life. It will only make changes if the line is not stable and/or a large numger of errors occur that would cause issues with data transmission.
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Distinguished Sage
Distinguished Sage
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Message 8 of 8

Re: New Infinity Connection - No DLM 'training' ?

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I agree it is guff about the ten day training period.

 

Any adjustments to your line will be made within the first two days after the line has been installed and thereafter only if DLM finds a problem. 

 

See link for an explanation about DLM

 

https://community.plus.net/t5/Library/FTTC-DLM-What-it-is-How-it-works/ba-p/1322799

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