Same copper as always . Power will have to supplied locally ( home)

In reply to a post by mikejp:

Can I ask where the two of you are getting your info from since I have not found this stuff on any OfCom site?

Some resource links...Openreach (BT Group) are driving this and Ofcom have variously stated they are strategically supporting their plans, and they will move regulatory and other pricing controls as needed in the transition.

Openreach - All IP Programme - Update, January 2022

Openreach - All IP FAQ

Openreach - WLR Withdrawal Youtube video

Openreach landing page for Transitioning copper services to IP voice services

BT Wholesale - The Journey to all-IP

In reply to a post by mikejp:

Excuse my 'supplementary', but will it carry the 48v supply?

No, there won't be any power on the telephone pair.

As mentioned already the copper isn't going anywhere.
Only PSTN is being closed (phone calls with a dial tone).

Take BT as an example.
Anyone who wants a simple phone only service will be provided with a BT Hub. It will connect as a very low bandwidth connection to either the FTTC cabinet or to the exchange.
The phone gets plugged in to the hub.

They have thought about capacity. Millions will be forced on to FTTP easing capacity in the FTTC cabinets.
Where necessary they can increase capacity on cabinets.

In reply to a post by mikejp:

Interesting, thanks. When in service and how does it connect to lines not in the FTTC cab? Is the 'old' copper path still there in the 'old' cab?

Yes, the old copper path continues to exist all the way from premises via the PCP ('old' cabinets) to the exchange.

Eventually FTTP will replace this, but FTTP network build-out needs to happen first of course.

In reply to a post by j0hn83:

[...]
They have thought about capacity. Millions will be forced on to FTTP easing capacity in the FTTC cabinets.
Where necessary they can increase capacity on cabinets.

There will no doubt be issues and wrinkles here and there. But an awful lot of planning has gone into this change - Openreach are not jumping into this blind by any stretch of the imagination.

Pheasant - useful links, thanks. I note no mention of SOTAP in the Jan 22 PDF! Presumably hot off the press?

The overall concept of SOTAP has been around for a while, but a strict technical definition has not been published (yet). As the name suggests it's a transitional product.

I believe they were awaiting the final outcome/learnings of the Mildenhall exchange trial and SOTAP pilot before finalising the spec. However that apparently got kicked into the long grass due to some issue.

The official launch is still in August this year (I think).

See page 7 of this newsletter...

https://www.openreach.co.uk/cpportal/content/dam/cpp...

In reply to a post by witchunt:

But we all know there isn't the physical capacity in the FTTC network to supply 97% on the country with an FTTC connection.
Fortunately FTTC is just one option.

As per one of my links: "In 2020, the overall share of households in the United Kingdom (UK) that had access to the internet was 97 percent". Basically any (reasonably reliable) connection will do for VOIP. And my first link said that 95% have access to over 30Mbps.

mikejp

OR offer a 128Kb service which is what BT will use to provide BTVoice. There will be no ability to use it as a BB connection.

Mikep

You can run it over ADSL from the exchange, it does not have to be FTTC. There are very few premises that cannot get ADSL ( at 128Kb BW) and BT will have plans on how to serve these. In theory you can run BT Voice over EEs mobile network

In addition OR are targeting 26m FTTP connections by 2026 so by the time PSTN is completely removed there will be around 21m FTTP connections in place. Some little exchanges are already FTTP only provision as they have exceeded the 75% FTTP premises served.