Estimate of maximum speed

I�ve had FTTC since January and then my initial line stats from the Sky Hub were;

Downstream Upstream
Connection Speed 39998 kbps 9999 kbps
Line Attenuation 15.6 dB 0.0 dB
Noise Margin 24.4 dB 28.28 db

I went for the Sky 40/10 package and have been very happy with it, but I am now toying with going with the Pro 80/20 package instead. My current line stats are

Downstream Upstream
Connection Speed 40000 kbps 9999 kbps
Line Attenuation 15.8 dB 0.0 dB
Noise Margin 15.3 dB 20.20 dB

With these figures and from what I�ve been able to read, I feel I probably won�t get the full 80/20 but more like 60/20. Would this seem correct?

The values given on the BT availability checker are

High Low High Low
FTTC Range A (Clean) 80 62.7 20 20
FTTC Range B (Impacted) 76.5 51.9 20 15.8

Stephen.

That attenuation is right on the edge of getting max speed or not. I think the estimate is correct - somewhere between 60-80. Plus you'll be helped by G.INP.

Thanks for confirming that. Is there anyway to tell if G.INP is enabled, given I have a Sky Hub?

It looks like it is. If your cabinet is a Huawei then chances are that G.INP is enabled.

At 16.6dB attenuation I get around 76Mbps. So at 15.6dB you "should" be looking at 79-80Mbps - it will ultimately depend on the noise levels which could push it don, so look towards 70-80 Mbps. And you could be looking at full Upstream

It looks to me like you'll sync at max speed or just below...

It also look like G.INP is enabled on your connection as your current sync is 40000 where a connection without G.INP maxes out at 39999..

In reply to a post by mlmclaren:

where a connection without G.INP maxes out at 39999 39998

Fixed that for you. Due to the INP codewords that you just don't get with G.INP

In reply to a post by mlmclaren:

where a connection without G.INP maxes out at 39999 39998

For Reference: http://s1119.photobucket.com/user/44_bh/media/OR_sta...

Edited by mlmclaren (Wed 11-Nov-15 23:28:42)

That picture was taken prior to G.INP being implemented unfortunately

Exactly my point... did you not read my post?