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Standard User gribz
(regular) Tue 17-Oct-17 20:55:06
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G.Fast - Random estimated speeds ?


[link to this post]
 
I'm thinking about having a go on the G.Fast ride, seeing as i'm in a trial area and the G.Fast pod on my cabinet has just been activated.

However, the speeds on the BT Wholesale checker seem strange, i'm no more than 100m from my cabinet and currently have full 80/20 @ 3.5 SNR, however the estimator gives less for a G.Fast connection (not sure what the "Amber" status is about either);

https://imgur.com/a/oOpRM

Checked on my neighbours address, gives another set of figures;

https://imgur.com/a/CK5EL

Seems strange, does anyone have a clue what's going on here? Maybe random because no one has an active G.Fast connection on this cabinet?
Standard User Zarjaz
(eat-sleep-adslguide) Tue 17-Oct-17 21:09:17
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Re: G.Fast - Random estimated speeds ?


[re: gribz] [link to this post]
 
Did you not get the full 80/20 without the 3db margin then ?

What is your current attenuation ?

Administrator MrSaffron
(staff) Tue 17-Oct-17 21:15:01
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Re: G.Fast - Random estimated speeds ?


[re: gribz] [link to this post]
 
Amber is a new one, maybe its ready but not fully commissioned, or was live and had an issue.

On checker needs the retailer to take it up and pass down the chain.

The author of the above post is a thinkbroadband staff member. It may not constitute an official statement on behalf of thinkbroadband.


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Standard User IanBB
(committed) Tue 17-Oct-17 21:35:55
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Re: G.Fast - Random estimated speeds ?


[re: gribz] [link to this post]
 
If you're less than 100m from the cabinet how the heck does it require a 3dB NM to get 80/20?

I'm ~300m (GEA test estimate) from my cabinet and achieve those speeds with 9.4dB/14.9 dB NM
Standard User Chrysalis
(legend) Tue 17-Oct-17 21:40:05
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Re: G.Fast - Random estimated speeds ?


[re: IanBB] [link to this post]
 
seems he got very bad luck with crosstalk or an issue somewhere.

currently on my nearly 400m line which has 50m of ali full 80/20 with 9db spare on the DS snrm.

Sky Fibre Pro BQM - IPv4 BQM - IPv6
Standard User j0hn83
(committed) Tue 17-Oct-17 21:42:23
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Re: G.Fast - Random estimated speeds ?


[re: gribz] [link to this post]
 
i'm no more than 100m from my cabinet

Perhaps as the crow flies, but with those estimates and you only getting roughly 70Mb @ 6dB snrm then your line is longer than you think.
Standard User Chrysalis
(legend) Tue 17-Oct-17 21:47:58
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Re: G.Fast - Random estimated speeds ?


[re: j0hn83] [link to this post]
 
yeah those estimates the line isnt 100m for sure, nice catch. smile

Sky Fibre Pro BQM - IPv4 BQM - IPv6
Standard User MHC
(sensei) Wed 18-Oct-17 10:58:57
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Re: G.Fast - Random estimated speeds ?


[re: Chrysalis] [link to this post]
 
Probably nearer 350 to 400m but needs to state the attenuation to give a real estimation of distance.


~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

M H C


taurus excreta cerebrum vincit

Edited by MHC (Wed 18-Oct-17 11:00:14)

Standard User GenuineCerberus
(newbie) Wed 18-Oct-17 13:26:04
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Re: G.Fast - Random estimated speeds ?


[re: gribz] [link to this post]
 
In reply to a post by gribz:
I'm thinking about having a go on the G.Fast ride, seeing as i'm in a trial area and the G.Fast pod on my cabinet has just been activated.

However, the speeds on the BT Wholesale checker seem strange, i'm no more than 100m from my cabinet and currently have full 80/20 @ 3.5 SNR, however the estimator gives less for a G.Fast connection (not sure what the "Amber" status is about either);

https://imgur.com/a/oOpRM

Checked on my neighbours address, gives another set of figures;

https://imgur.com/a/CK5EL

Seems strange, does anyone have a clue what's going on here? Maybe random because no one has an active G.Fast connection on this cabinet?


If you would like to PM me the full address, I will be happy to run a G-Fast check for you with BT

Thank you
Standard User baby_frogmella
(fountain of knowledge) Wed 18-Oct-17 14:25:40
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Re: G.Fast - Random estimated speeds ?


[re: GenuineCerberus] [link to this post]
 
Off topic: If you register with the TBB forum admins as an ISP (say as user 'Cerberus_Support') then ISP rep will appear under your profile which makes your requests look a bit more genuine - not that I'm in doubt you're from Cerberus.

FluidOne FTTP On Demand 330/30 Mbps
Netgear Nighthawk X10 running Voxel

Edited by baby_frogmella (Wed 18-Oct-17 14:26:48)

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