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Standard User deleted
(deleted) Sun 22-May-16 14:57:45
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Re: FTTP & Shared Utility Poles


[re: deleted] [link to this post]
 
It was three of four years ago that the work was done.
Standard User deleted
(deleted) Sun 22-May-16 17:34:22
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Re: FTTP & Shared Utility Poles


[re: deleted] [link to this post]
 
I can tell you that the rules regarding heights over roads haven't changed in at least 6 years. Someone else might be able to go back further than that. I honestly have no idea about any new EU rules and that would definitely be something I should know. So unless there's been a massive oversight and people haven't been told....
Standard User cymru123
(regular) Fri 16-Sep-16 12:04:30
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Re: FTTP & Shared Utility Poles


[re: cymru123] [link to this post]
 
A few questions.

Based on this quick map I've drawn (Village FTTP Architecture Map) :

You can see that there is one overhead BFT from point A to B, then from point B two overhead BFTs leave going towards point C and D. Point E on the map is the precast chamber installed back in January. Point A looks like it's waiting to be threaded through the underground ducts and connected to hardware that will connect the fibres back to the exchange.

So the looking at this the initial questions I had was :-

1) I'm assuming a pole mounted splitter will be placed on point B? Or will this be a DP or something else that will connect the fibres from the one BFT into fibres that will then feed into the two BFTs going towards Point C and D?
There are also a handful of properties around this point so they will need to be provided a fibre manifold as well.

2) Any idea on what type of BFT this is and how many cores or strands of fibre it can hold?
Some large images can be found here IMG_20160708_151556 | IMG_20160915_151710

3) I'm then assuming point C will go to a fibre DP which will then serve the ~4 properties around there?

4) Then from point D this looks like it will go in the underground ducts around the village/hamlet and into the various underground chambers to distribute the fibres to the telegraph poles in the village and also into the chamber at point E which could be another DP?.
The sketch showing the poles and how the current copper pairs are distributed within the village can be found here

The timeline has also slipped and is now looking to be towards Nov-Jan.

Edited by cymru123 (Fri 16-Sep-16 12:25:10)


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Standard User cymru123
(regular) Wed 21-Sep-16 11:52:03
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Re: FTTP & Shared Utility Poles


[re: cymru123] [link to this post]
 
In reply to a post by cymru123:
2) Any idea on what type of BFT this is and how many cores or strands of fibre it can hold?
Some large images can be found here IMG_20160708_151556 | IMG_20160915_151710

Is the BFT in the previous post with the map and images a 36 ULW cable?
Standard User deleted
(deleted) Wed 21-Sep-16 17:05:55
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Re: FTTP & Shared Utility Poles


[re: cymru123] [link to this post]
 
I can't see the first image, as it needs a google login. The other doesn't show enough detail.

However, my initial response to your post was
a) to wonder how many properties there were, and how they were distributed around the area.
b) to wonder whether the cable you labelled as BFT - which is really empty tubing - was actually a form of lightweight fibre.

The key piece of infrastructure is the splitter (or the primary splitter, if 2 levels are to be used). Obviously the splitter needs few fibres in, and lots of fibre out to premises ... so there is a balance to be had for locating this close to properties.

There is an architectural picture for overhead fibre that might allow you to guess further:
http://www.optservices.eu/FTTP%20-%202%20Level%20of%...

Either the 96-fibre lightweight or the 36-fibre ultra-lightweight seems more likely than overhead BFT.
Standard User cymru123
(regular) Wed 21-Sep-16 18:38:48
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Re: FTTP & Shared Utility Poles


[re: deleted] [link to this post]
 
@WWWombat

Will see if I can fix the image which is asking for a login.

However, my initial response to your post was
a) to wonder how many properties there were, and how they were distributed around the area.

There are about 5 properties at Point B on the Map.
Then about 4 properties around Point C.
Within the Village boundary itself (as highlighted in the map) there are around 50 odd properties.
The rest is just narrow roads and fields.

b) to wonder whether the cable you labelled as BFT - which is really empty tubing - was actually a form of lightweight fibre.

How can you distinguish the difference between the BFT's and the light weight fibre cables from a far?

I'll have to get a better camera to see if I can get some close-ups. It's very thin ariel cable anyway whatever it is.
Standard User deleted
(deleted) Thu 22-Sep-16 14:18:51
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Re: FTTP & Shared Utility Poles


[re: cymru123] [link to this post]
 
At that kind of size of village, one splitter node is enough - starting at one internal splitter device, gradually expanding to 2 or 3.

Each property will need a DP of some kind - either a standalone DP, or a combined secondary-splitter and DP.

That likely means a splitter at A or B, and DPs at B and C, and more DPs in the main village. Or a primary splitter at A or B, and a secondary splitter/DP at B, and a DP at C, and more secondary splitters in the village.

I don't see how the chamber helps.

It can be hard to tell the difference between cables.

A single tube BFT can be 7mm underground, but likely larger for aerial.
A 7-tube BFT is likely to be 20mm diameter
a 12-tube BFT is likely to be 25mm+.

I saw BT say, on announcing the 96-fibre lightweight variety, a diameter of 7mm.

The 36-fibre "ultra lightweight" places less demand on poles, but I can't imagine it being much smaller.
Standard User cymru123
(regular) Thu 22-Sep-16 16:11:42
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Re: FTTP & Shared Utility Poles


[re: deleted] [link to this post]
 
Thanks @WWWombat.

Looks like you are right, it is LW OH Fibre. I've updated the map.

I'm not too sure what the chamber is for either, however it was installed earlier in the year. Maybe to house a splitter or DP as some of the poles within the village may not have enough room to have a pole mounted enclosure.

Got some closer pictures of the fibre cables (IMG_1621 & IMG_1622)

On the cable I can make out the following:
multi element LW OH fibre cable 36F/18 Property of BT PGH 0216
Standard User deleted
(deleted) Thu 22-Sep-16 17:36:10
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Re: FTTP & Shared Utility Poles


[re: cymru123] [link to this post]
 
That closeup cinches it then ... 36 fibres.

I suspect the "/18" means that the fibres inside are in 2 tubes of 18 fibres, but most of BT's previous fibre has come in tubes of 12 fibres. Perhaps it means something else.
Standard User cymru123
(regular) Thu 17-Nov-16 10:26:50
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Re: FTTP & Shared Utility Poles


[re: deleted] [link to this post]
 
Well after about 10 months of no Openreach related activity within the village, leaving the works they had done back around Jan time, it looks like they are now installing more ducts and joint boxes in the road and footways.

Such as the message shown below:

Install 1m of 1 way poly duct in Footway,Provide 1 core drill(s) into jointbox or building & install a JB26


I understand a JB26 is a type of joint box, any reason why they would need to install another one by the existing one? This seems to be by an exiting pole too.

Least things are now moving on.
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