Redundancy usually

And I read some place that each home gets 4 strands of fibre where 2 or 3 are spare., so that would mean 4 times that.

That is just in the blow from the DP node to the CSP at the premises. Ask Robertos I know he has a couple of photo's that show this, I don't know how to post them on here.

I think by making it a little thicker, as in adding 3 spares and its waxy coating makes it a little more robust for the blowing, as well as adding some redundancy.

Now I have to work out which one, and had a nicely liquid afternoon so not today.

The ones of the CSP on the wall Bob ..... now go sleep it off

In reply to a post by Zarjaz:

And I read some place that each home gets 4 strands of fibre where 2 or 3 are spare., so that would mean 4 times that.

That is just in the blow from the DP node to the CSP at the premises. Ask Robertos I know he has a couple of photo's that show this, I don't know how to post them on here.

If you are referring to the Termination box on the wall I have pictures of those, also our area has loads of them on their wall, ranging from brown, grey, white etc in colour.

Thinking about it, the redundant 3 strands don't get connected anywhere, so no extra line strands.

Paul

Ok, did some more reading, so I hope I now have it right now LOL.
This was from the link posted back a few posts, basically pages FTTP - Brown Field Capture and FTTP GEA Network Architecture

The downstream bandwidth per strand is 2.5Gbps, so the 288 strand cable has a total bandwidth of 720Gbps downstream, and the upstream per strand is 1.25Gbps with a total per 288 strand cable of 360Gbps.

• There are multi 288 strand fibre cable (COF 200 Cable) that leaves the exchange.
• The 288 strands go into a Aggregation Node that takes 48 strands and passes the rest through to go onto the next Aggregation Node.
• These 48 strands gets put into 12 cables with 4 strands that goes into a 32 way splitter resulting in 128 strands.
• These 128 strands then goes into the FibreDP Hardware that takes < 20 strands and passes the rest through to the next FibreDP Hardware daisy chained to it.
• Now a 4 strand fibre is used where only 1 strand of it is connected to one of the <20 strands and goes up the pole to the address etc.

Hopefully that is more right.

So each strand is shared with 32 connections (Downstream: 2.5Gbps / 32 = 78.125Mbps, Upstream: 1.25Gbps / 32 = 39.0625Mbps when hammered)
Granted we lose a fair amount of downstream when everyone hammers the downstream at the same time, this is unlikely but could happen, where as the upstream no matter how much you hammer it you will always be able to get 30Mbps which makes sense.

So in theory a 288 strand cable (COF 200 Cable) can handle around 9,216 connections, so only 2 of these cables would be required to handle all our FTTP connections which is about 18,176 give or take and 1 cable for all the FTTC connections which is about 5,377 give or take.

So if all above is correct our exchange would only require 3 lots of the 288 strand cables to support it and also leaving loads free for future use.

Paul

Houston, ....

Yeah but the pictures I am referring to show the insides.

In reply to a post by Zarjaz:

Yeah but the pictures I am referring to show the insides.

Ah ok, are you referring to the wafer inside where the fibre gets wrapped round?

I have an image with it closed and opened

Maybe Robs images will show more.

Paul