An "extension socket", to me, means second/third/fourth with a handset plugged in and thus increasing the potential REN. A plug in lead is needed be it to a handset 1m away or 20m away.

In reply to a post by MHC:

BT plug to socket cables are (or were) very common - pre-made.

For what application? The device-side socket has always been RJ11 hasn't it?

I was responding to you comment about RJ11 to BT being more common than BT to BT ... and as you have not specified which hub, it could have either, as in t epast some have had BT style sockets.

In reply to a post by MHC:

it could have either, as in t epast some have had BT style sockets.

I've never seen an xDSL port on a router with a BT style socket, only ever RJ11. The voice socket is a relatively new phenomenon, but even then, it will mostly just be used with a DECT device and not as an interconnect to a wall socket, as I am wanting to do.

I certainly had a BT hub - a 2Wire variant which had a BT socket for their original VoIP provision and other variants had an RJ11.

In reply to a post by ian72:

In reference to www.bt.com/help/landline/digital-voice--my-extensions-have-stopped-...:

Extension sockets aren't supported on our Digital Voice service. You can connect existing phones to the phone port on the back of the Hub.

If it's essential that you use your extension wiring, please contact us on 0330 123 4150 to discuss this.

Interesting position from BT given many people likely had phones somewhere away from the main socket.

Yep, interesting. Although in this configuration I'm planning, I believe it is essentially equivalent to plugging a single giant BT extension cable into the voice port, just converted to wall sockets.

In reply to a post by MHC:

a 2Wire variant which had a BT socket for their original VoIP provision

The VoIP port will be BT style and commonly just serves a single voice device. As I say, BT (male) to BT (male) style cables have never had a widespread application.

Edited by Oliver341 (Tue 23-Jul-24 10:49:59)

I have all my extension sockets round the house fed from the phone port on the back of the BT hub. I made up a lead to connect the extension wiring to an old phone lead and its work fine.
check out this for the principals involved

https://youtu.be/Id_KGXMcJHk

If BT Digital Voice
https://www.bt.com/help/user-guides/phones/digital-v...

Thank you, very useful. So he cut the end off an extension lead and wired it to a junction box. That's also an option, but I like the idea of an RJ11 socket which would allow the lead to the voice port on the router to be swapped out, if necessary.