Cheers Andrew,

Even more interesting considering BT have only provided a ECI 128 for 600 houses?

I got the distinct impression they don't plan to offer FTTC to all 600 - even if they wan't it.

I do wonder if the FTTP to the other 300 houses will be 100% coverage and BT will use implementation as a reason to remove any obligations on them regarding the very nackard copper network in the area - many pairs are voice only!

Regards,


Gareth

Nothing to stop them adding another cabinet of course

In reply to a post by MrSaffron:

Nothing to stop them adding another cabinet of course

Yeah its going in before Friday. But, will OR be going FTTP on demand once the cabs are full.


Regards,

Gareth

FTTP on demand means YOU pay around £1500 to install and gives you a fibre back to the aggregation point so cabinet is irrelevant

In reply to a post by garethr:

Cheers Andrew,

Even more interesting considering BT have only provided a ECI 128 for 600 houses?

From what I understand is the ECI 128's are upgradable to 256 lines as long as the cabinet can take the extra tie-ins. Maybe they are only expecting a 30% take up.

In reply to a post by Kam:

The ANALOGUE cable TV system in Milton Keynes is owned by BT. In the late 1990s BT were forced to lease it to NTL, now Virgin Media. Neither company seems to be interested in upgrading this now obsolete system.

Thanks Kam.

Which leaves us with the original question I raised. Whether or not Openreach can use that ducting for FTTP. I expect it depends on the terms of that forced lease.

In reply to a post by MrSaffron:

then a fibre splitter every 32 manifolds

Really?

I agree that a splitter works at 1:32 concentration (or 2:32 if dual parented), but the splitter node can hold 4 such modules. So that is 32..128 end users.

I also thought that a manifold held 7 or 12 blown fibre tubes, and acted as the final joint in the blown fibre tubing before the drop to the end-user properties.

So each splitter could serve 3-5 manifolds, and a splitter node could be 12-20 manifolds, assuming they're all fully populated.

I think it gets more complicated, as the splitter really is talking about the number of fibres, while a manifold is talking about the number of tubes... and multiple fibres can be blown down each tube - each of which *could* use up one of the 32 slots in the splitter.

In reply to a post by RobertoS:

In reply to a post by Kam:

The ANALOGUE cable TV system in Milton Keynes is owned by BT. In the late 1990s BT were forced to lease it to NTL, now Virgin Media. Neither company seems to be interested in upgrading this now obsolete system.

Thanks Kam.

Which leaves us with the original question I raised. Whether or not Openreach can use that ducting for FTTP. I expect it depends on the terms of that forced lease.

They are already using it. That's how the MK FTTP trial was undertaken. A trial which BT vowed wouldn't require major civil engineering.

The result is coax, pstn copper and fibre in the same duct.


Gareth

In reply to a post by WWWombat:

In reply to a post by MrSaffron:

then a fibre splitter every 32 manifolds

Really?

I agree that a splitter works at 1:32 concentration (or 2:32 if dual parented), but the splitter node can hold 4 such modules. So that is 32..128 end users.

I also thought that a manifold held 7 or 12 blown fibre tubes, and acted as the final joint in the blown fibre tubing before the drop to the end-user properties.

So each splitter could serve 3-5 manifolds, and a splitter node could be 12-20 manifolds, assuming they're all fully populated.

I think it gets more complicated, as the splitter really is talking about the number of fibres, while a manifold is talking about the number of tubes... and multiple fibres can be blown down each tube - each of which *could* use up one of the 32 slots in the splitter.

That fits with my understanding. Not seen anything to suggest BT go higher than 64 way.

Gareth

Edited by deleted (Sun 16-Dec-12 02:25:05)