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[renluop]

Came home the other day and there were two BTO vans parked with men working on an inspection pit near my house.

Could be mere coincidence but up to now the postcode checker has shown my and several other addresses that are connected to the same cab as a minority unable to get FTTC. ( I think our house were built in a developer's final phase). Now we can get FTTC albeit at low speeds, that seem to make it hardly worth the bother.

With insomnia and other spare moments I prepared a spreadsheet of each address's estimate, and it is confusing why one should get good speed whilst next door gets the inferior service.

For any interested the link is https://docs.google.com/spreadsheet/ccc?key=0Al6WAVYKSZrBdHhQTnkxSW45QU9LbC00cUxLZWVEV2c&hl=en_US

[renluop]

No thoughts? Is this a renluop lead balloon?

[UncleUB]

Have you put your details into the BT checker to see what you can get via their Infinity service

http://www.productsandservices.bt.com/consumerProducts/displayTopic.do?topicId=29017

[renluop]

Yes, I am one of the lesser households!
What I fail to see is why one property can produce 25.4 Mbps whilst its neighbour only 12.5; one side of a short road 12.5, the other no service.
It's not as if they are mansions: they are 3bed linked-det,semis and small bungalows.

 

[roseway]

If these are just BT estimated speeds they can't be taken too literally. Have any of your neighbours actually subscribed to an FTTC service?

[renluop]

No idea TBH.

FWIW in the BT Community Forum there's  a thread that has posts suggesting estimates are based on what theoretically would be the case once all FTTC lines of a cab are occupied. It's claimed that FTTC is more affected by cross talk than ADSL.

[burakkucat]

It's claimed that FTTC is more affected by cross talk than ADSL.

As the VDSL signal occupies a wider spectrum (which, obviously, implies that it uses higher frequencies) than ADSL, there is a lot more scope for inter-pair coupling (cross-talk), plus other RFI effects (REIN, SHINE). 

[renluop]

" inter-pair coupling (cross-talk)" Doesn't that make more for cross fertilisation rather than cross-talk?

[Bald_Eagle1]

If these are just BT estimated speeds they can't be taken too literally.

Except when a user complains about fantastic speeds becoming really poor.
Then they are taken as literally as literal can be (& quoted back at the said user, over, & over, & over............)

Paul.

[geep]

@burakkucat - I was interested to learn from your post that Shine as well as Rain can upset VDSL. (sic)
Shine was a new one to me.
Now I find that there is Pain too (PEIN)

Cheers,
Peter

[burakkucat]

Now I find that there is Pain too (PEIN)

Peter, Do you have a reference for that acronym, please?    My Google-fu seems to be currently lacking . . .

[geep]

http://tinyurl.com/6l9fmdp should gives some nice results.
VDSL test equipment generates REIN PEIN and SHINE. e.g. Telebyte 4901 Multi-Output Noise Simulator.
REIN - Repetitive Electrical Inpulse Noise, PEIN - Prolonged Electrical Inpulse Noise, SHINE - Single Isolated Impulse Noise (Dunno where the H comes from!)
Also this paper: www.ncc.org.in/download.php?f=NCC2008/2008_B2_3.pdf

Cheers,
Peter

[burakkucat]

Thank you, Peter. I now have some reading to do.

[renluop]

Hi b'cat and Peter! Addition to task list: Precis and translate in to Basic English for lesser mortals for someone who believes
"PEIN is what a BTO engineer suffers when dropping hammer on foot".

Now where's my coat!

[waltergmw]

@ renluop,

As in ball pein no doubt !

Kind regards,
Walter