In reply to a post by Dogdiego:

so below the 54mb guaranteed.

is the guaranteed speed the same as the handback threshold?

In reply to a post by dect:

In reply to a post by Dogdiego:

so below the 54mb guaranteed.

is the guaranteed speed the same as the handback threshold?

Clean is 55.1
Impacted is 52

OK thanks, for some reason I wrongly assumed the guaranteed speed would be equal/below the impacted speed.

In reply to a post by dect:

OK thanks, for some reason I wrongly assumed the guaranteed speed would be equal/below the impacted speed.

Makes sense I suppose but whenever I put in my details on TalkTalk/Sky/Plusnet etc. it always gives me the 55.1 as the minimum sync speed.

The handback speed is well below "Low" estimates on my line.

VDSL Range A (Clean)
High 62.2
Low 44
15.9
10.2
Handback 39.3

VDSL Range B (Impacted)
High 60.2
Low 40
15.5
9
Handback 34

Here's mine - handback is about 5mb below low, same as yours. I always get the estimate of between 60-80, but don't think I've ever seen anything above 54mb since I've been with Vodafone. I presume that's down to crosstalk at the cabinet and will be the same with whatever ISP I choose. Congestion meanwhile proving to be a whole different ball game.

VDSL Range A (Clean)
High 80
Low 60.3
20
19
Handback 55.1

VDSL Range B (Impacted)
High 80
Low 58.2
20
18.3
Handback 52

Edited by deleted (Mon 14-Jan-19 13:13:46)

I never understood why there are two handback figures. Is there a separate test made to determine whether a line is "clean" or "impacted"?

If not, wouldn't they always just use the lower handback figure - on the assumption that if you're getting a sync speed below the "clean" handback figure, then your line is probably "impacted"?

In reply to a post by candlerb:

I never understood why there are two handback figures. Is there a separate test made to determine whether a line is "clean" or "impacted"?

If not, wouldn't they always just use the lower handback figure - on the assumption that if you're getting a sync speed below the "clean" handback figure, then your line is probably "impacted"?

I have never been able to make sense of that either.

I've noticed that both BT and TalkTalk state that if the speed falls significantly below minimum guaranteed that they will investigate... although define significant. Maybe their definition of significant is a figure that is below the impacted range.

Weasel words. Either the speed is guaranteed to meet that level, or it is not.