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Message 11 of 13

Re: Hello all, move question.

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@licquorice wrote:

@RogerB wrote:
You would soon get to know ... as line noise, crackle or impulse noise will soon deteriorate the connection, but nothing should change even though you're changing supplier as the line is the same, and it's on the same network as mentioned. But the only change is line algorithms that run it. BT's tend to be a tad critical moreso than alternative providers, but as said if the line is fine, it should be ok to go ... but maybe expect a slight drop in linespeed, perhaps. If not ... good. e.g. it may use 3-4 megs more overhead .... nothing. And if that's the case don't worry about it, it'll not affect good throughput.

Its actually the reverse Roger, BT implement a 'Speed' DLM profile whilst Sky implement the 'Standard' profile.


Hi liquorice, what's the difference in speed dlm and standard. 

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Message 12 of 13

Re: Hello all, move question.

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@licquorice wrote:

@RogerB wrote:
You would soon get to know ... as line noise, crackle or impulse noise will soon deteriorate the connection, but nothing should change even though you're changing supplier as the line is the same, and it's on the same network as mentioned. But the only change is line algorithms that run it. BT's tend to be a tad critical moreso than alternative providers, but as said if the line is fine, it should be ok to go ... but maybe expect a slight drop in linespeed, perhaps. If not ... good. e.g. it may use 3-4 megs more overhead .... nothing. And if that's the case don't worry about it, it'll not affect good throughput.

Its actually the reverse Roger, BT implement a 'Speed' DLM profile whilst Sky implement the 'Standard' profile.


Yeah, but I'm not sure Sky would have invoked any g.inp within their algo ... and if the dslam doesn't run it presently, there will be a difference. (don;t tend to keep on track with sky offerings ) 🙂
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Message 13 of 13

Re: Hello all, move question.

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@Zombie wrote:

@licquorice wrote:

@RogerB wrote:
You would soon get to know ... as line noise, crackle or impulse noise will soon deteriorate the connection, but nothing should change even though you're changing supplier as the line is the same, and it's on the same network as mentioned. But the only change is line algorithms that run it. BT's tend to be a tad critical moreso than alternative providers, but as said if the line is fine, it should be ok to go ... but maybe expect a slight drop in linespeed, perhaps. If not ... good. e.g. it may use 3-4 megs more overhead .... nothing. And if that's the case don't worry about it, it'll not affect good throughput.

Its actually the reverse Roger, BT implement a 'Speed' DLM profile whilst Sky implement the 'Standard' profile.


Hi liquorice, what's the difference in speed dlm and standard. 


Its not a question of speed per se, its a question of tolerance to errors before DLM kicks in and reduces speed to improve stability of the line. The chart below shows the tolerances for the 3 profiles.

 

dlm1.jpg