Very old legacy connections - pre-LLU?
Before I phone BT and Talk Talk to try to untangle my mother's broadband and phone service as we get closer to the end of copper landlines, does anyone here have advice on the most likely way to avoid losing a longstanding landline number and not confusing customer service reps with something that might be complicated?
There is both a BT line with payment for line rental going to BT each month and a Talk Talk (ex-Pipex) ADSL service. My best guess is that at some point perhaps twenty years ago Pipex/Tiscali/TalkTalk called to offer a calls bundle but this was, presumably, not a Local Loop Unbundling as the BT account has continued.
Is there any risk to phoning Talk Talk and just asking them to stop the Broadband and calls over-the-top service, then contacting BT to add broadband to the existing phone service/replace that with FTTP and a VoIP phone service? Or could BT carry out a one-touch switch from Talk Talk to their own service and keep the phone number? It might be very straightforward, but I'm concerned some set up from long ago might not be reflected in the current processes or well understood by customer service.