another cabinet due to be implemented not far away has an uplift of 409.02 (PCP 92 here) which doesn't seem to make sense if it's the multiplier of the current speed?
The multiplier of average speed in the postcode before, versus average speed in the postcode after.
I guess an average of 128Kbps increased to an average of 50Mbps would qualify.
Does anyone have any more detail on the phase dates though please?
The cabinet plans have always included phases - and as you noticed, the phase numbering matches up well with the public announcements.
Back at the start, deployment also tended to go in the same order as the phase numbering. However, once you get beyond phase 4 or 5, the phase number becomes almost irrelevant to the time of deployment: The project started moving exchanges & cabinets around "at a whim" (to us; they obviously had good reason internally).
I suspect that, as the rollout became more parallel, with more staff, it gave them some freedom.
it's around 375, all on a new-build (2008-2013) estate, all properties within about 400m of the cabinet.
does anyone have a view on how this rates on the scale of commercial attractiveness to Openreach?
On the face of it, the cabinet rates just fine.
The three biggest unknown factors are:
- Getting fibre there. Ducting to be cleared (if blocked) or installed (if full or unusable) can make it more expensive than the norm.
- Getting power there. A new supply usually costs around £1k, but the power companies charge you the full whack if they need something non-standard (such as a long supply connection, or they need to upgrade a transformer). For example, 3 cabinets in North Yorkshire got jeopardised because the power cost was £90k.
- Siting the cabinet. Above ground, there needs to be enough physical space for the cabinet within 100m. Below ground, there must be no services underneath the cabinet. I've also seen cabinets jeopardised because that combination could not be found.
There are also 2 problems that turn up in new-build areas:
- BT didn't know how big the cabinet was (or was going to get) at the time of planning, a fact that may continue to be ignored throughout the commercial rollout. At the most extreme, it ends up being ignored by BDUK because it ought to have been commercial, but is still ignored by BT. At best, the BDUK project takes time to identify these, and works with BT to make sure they get done (as seen by the Warwickshire project)
- The road hasn't yet been adopted by the local authority. In this case, BT have no right to install the cabinet, and the builder is not incentivised to let them (they just want the authority to take the road off their hands ASAP).