Hello & Welcome to Just Answer,
Sorry to hear of any issue you are having with your phones.
When you say "ancillary phone sockets", are you referring to the "Charger" - as shown in the attached diagram?
I see it has been a few days and I just wanted to follow up to see if you have any more questions concerning this issue or if the issue was resolved.
I look forward to any further questions or results that you may have.
Thanks, ***** *****--. .-(im)