It's something I meant to look at a while back, I'm just looking a the specs for DSLAM equipment now!

What the specs say will only tell you what is possible NOT what Openreach actually do

OH yeah I know, just trying to make heads or tails of it really....

Also trying to work out if someone connected to a 96 cab will get better capabilities than those who are connect to a 288...

I say this based on the 96 cab have capability for 4 cards (presumably 1Gbit each) 4000Mb/s divided by "up to" 96 connections = 41.66Mb/s (if all where to saturate there connections and then be equally managed upon breaching the capabilities,

As it stands if a 288 ended up with all connections saturating the max capabilities each connection would only achieve around 20Mb/s each...

Obviously there is around 1% chance of any such thing happening when you consider that a small amount of lines will actually sync at max (80Mb/s) and also the chances of everyone saturating there lines capability also is tiny!

I have some documentation for the ECI VTU-C 64-port line cards used in the M41 DSLAM knocking around somewhere and IIRC correctly each card can take two 1 GigE connections.

Hmmm, OK..

I hadn't looked at ECI M41 just yet to be honest.

In reply to a post by MrSaffron:

I know multiple GigE is possible, but whether its delineated per line card, or for the whole DSLAM have never bothered to find out.

Whole DSLAM. The individual line cards / service boards go via the chassis backplane / switching fabric to the network boards. No mapping between line cards and individual uplink ports by default.

In reply to a post by simon194:

I have some documentation for the ECI VTU-C 64-port line cards used in the M41 DSLAM knocking around somewhere and IIRC correctly each card can take two 1 GigE connections.

Those aren't the line cards the customers connect to, though. No static mapping between line cards and the backhaul.

Would make zero sense and be very inefficient to have backhaul on each line card. Far better either on a dedicated module or as part of the controller card.

In reply to a post by MrSaffron:

That too, more effort goes into tracking Openreach, but then they have the largest expansion programme at this time. The VM coverage is tracking their changes, but usually on a monthly basis and the same with KC.

The number of journalists I talk to, who are shocked to hear the coverage levels as in is a lot higher for an area than they thought, and you then have to explain what this means e.g. demographics of an area. A common one is that they think BDUK is about enabling coverage in 90% of rural premises.

For the record I am part of the 4% of Surrey that has fibre based available and is not superfast - must be a miracle I can work from home if the needs of home working are true.

Surprised Black Mamba hasn't arranged X-GPON or NG-PON 2 for you yet.

In reply to a post by MrSaffron:

On Wales maybe a look at the current ultrafast stats might help

https://twitter.com/thinkbroadband/status/6408200110...

The Superfast Cymru commitment for ultrafast - 100Mbps to 40% - obviously begs the question: 40% of what?

From my understanding of the Welsh contract, it is 40% of the Welsh intervention area, not 40% of Wales. Which means that none of the pre-existing VM cabled properties count in that coverage target.

From the SC public consultation for the 2nd phase infill project, we have the following numbers:
- 1.45 million premises (of which 1.38m are residential)
- 0.69 million premises covered commercially
- 0.74 million premises included in the SC phase 1 project.

That means the original intervention area was 0.76 million premises. If I'm right, the SC target for 100Mbps is to 0.3 million premises - which maps back to being just over 20% of all the premises in Wales.

If Openreach have reached 0.2%, there's a little way to go yet...

And my belief is that it really means 40% have the option of fibre on demand in the intervention area, hence the FoD news about it coming back to Wales at some point.

Given ultrafast is touted as worth £14k to property value am sure no one will mind adding it to their mortgage

Expecting native FTTP to grow to maybe 5 to 6% of Wales, still a lot in the plans not delivered yet, but bits keep appearing.