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tinytina
Contributor
663 Views
Message 1 of 14

DLM and profile increase

Can I ask a quick query please - if DLM has kicked in on a line, how exactly does the IP profile rise, if at all?  I mean, do you see it rise quietly/automatically everytime you check your ip profile, or will the line keep resetting everytime and your ip address changes?

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13 REPLIES 13
tinytina
Contributor
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Message 2 of 14

Re: DLM and profile increase

Anyone with any advise please?

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legitimise_sailing
Distinguished Expert
621 Views
Message 3 of 14

Re: DLM and profile increase

When it happens to me I see a resync about 1 a.m. which increases the speed to it's normal level. This is after approximately 2 weeks from the event that damaged the profile.
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tinytina
Contributor
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Message 4 of 14

Re: DLM and profile increase

Thanks. Best to leave everything well alone then!

Cheers.
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MBR123
Expert
537 Views
Message 5 of 14

Re: DLM and profile increase

M8 good luck, DLM can take weeks, months, it all depends to go back to your perfect speeds again it could even take upto 6 months and if you get a power cut or any turn off or the line is bad its back down again. DLM sucks bad, its a massive let down in my opinion it should be scrapped altogether or on a line of 100% quality to the face plate.

Please click on white star to the left and say thanks if I have helped you at all!. 🙂 Thank you. Some handy links Copy & Paste:-
http://bthomehub.home/
http://netalyzr.icsi.berkeley.edu/index.html
http://diagnostics.bt.com/login/?workflow=Speed
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tinytina
Contributor
482 Views
Message 6 of 14

Re: DLM and profile increase

The download noise margin being reported on my line is 6.5 at the moment.  Does that mean there's some sort of noise or interference?  I understand that a "perfect" margin = 6db?

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legitimise_sailing
Distinguished Expert
477 Views
Message 7 of 14

Re: DLM and profile increase

6 is the target margin that the modem aims for when it syncs with the cab. However, if the final speed is capped then the margin won't get down to the target.
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tinytina
Contributor
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Message 8 of 14

Re: DLM and profile increase

So our speed is being "capped" at the moment?

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legitimise_sailing
Distinguished Expert
467 Views
Message 9 of 14

Re: DLM and profile increase

Isn't that why you were asking about DLM?
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tinytina
Contributor
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Message 10 of 14

Re: DLM and profile increase

Sorry.  Being thick at the moment!  Ofcourse that's why I asked ... thanks!! 

 

The bizarre thing is that we had an OR engineer visit a couple of weeks ago - whilst he had his equipment connected to the line he noticed a sync drop. He immediately went to the cabinet, and apparently saw another sync drop whilst connected there. He explained about some "connector" in the cabinet having blown, and for us to have our line moved over to new connectors.  He also said our noise margin would be reset to 12 (as this was a more stable rate for any broadband line). Ten days later (i.e. two days ago) we experienced 2 sync drops, the second one 12 hours after the first, then we noticed the noise margin as 6.5. So wondered what actually was going on.  Was this just a glitch,  is it the start of more disconnections and something having gone wrong in the cabinet again?

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