A BT431 plug will not fit a 'tp-link Smart Hub as supplied by my service supplier Fleur Telecom. This plug is designed to fit the standard copper wire box used for decades that is now made obsolete by fibre optic cables and the new distributor box.
I believe that the green socket on the Hub will accept a later form of LAN plug but that leaves me with a telephone that has a traditional 4 pin telephone plug at it's base. The Open Reach Engineer was unable to offer a clear solution to this and the grey DSL lead provided with the 'tp-link' (not used in the installation) is as much use as a Chocolate Teapot. At the very least, Open Reach should provide clear information on how to connect a traditional corded phone to the new hub.
I'm pretty aggrieved that I have been forced to convert, have lost my corded phone temporarily, have no possibility of spur lines to other corded phones in other parts of my large house and am therefore forced towards using a DEC system. Progress should be customer led, not imposed from above whenever a new sales opportunity arises.
If you are trying to use BT's Digital Voice, it only works through their Home Hub. A TP-Link router is a waste of time, as it will never work.
Why on earth are you posting nonsense on a BT forum when your supplier is not BT?
Openreach only provide the network, they don't provide the end user equipment.
a standard phone connector BT431 will fit the SH3 so your information is incorrect
The internationally recognised "phone socket" is the RJ11. A third-party telephone adapter (or ATA) may be using that but, as I said, it will not work with the BT system. You would be better posing the question to you own ISP, as we here are only fellow customers.
The real question is who is now providing your phone service? Is it Fleur or BT? If the former, a BT Home Hub won't help.
BT Digital Voice (DV) is a proprietary system and only works through BT equipment.
This has absolutely nothing to do with BT.