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Full fibre rollout & BT fitted (2008) line-splitter

annie72 — Sat, 08 Nov 2025 18:38:18 GMT

Hi, Apologies - I’m not the most tech savvy, but I’m marginally more tech savvy than my elderly parents, who I’m having to try figuring out the rollout of DV and full fibre for.
We currently have a single overhead line into the property, with a BT fitted (in 2008) line splitter in the roof space near where the line enters. That splits the line into 2 completely separate phone numbers.

1 is pure no internet landline (which my elderly parents intend to keep the number as their phone number).

The other phone number is broadband via FTTC. That is already technically DV - though the line is used purely for broadband (a legacy of having a separate fax / internet line).

My parents have had the letter today about their line (number) being converted to DV remotely (at the exchange).

Do we need to be concerned about the internal line splitter box, or should everything still work as now?

Many thanks

Re: Full fibre rollout & BT fitted (2008) line-splitter

36ULW — Sat, 08 Nov 2025 19:48:43 GMT

The only kind of, ‘Splitter’ that existed for Voice Services was a DACS System but you won’t have that otherwise you wouldn’t have FTTC on one of them as it’s not compatible.

The Drop Cable will either be a Drop Wire 10b, which has two cable pairs and or a Drop Wire 15, which has 4 pairs.

The, ‘Splitter’ you refer to will just be an enclosure like a BT66, AGDC Joint, etc. Basically a box to house the cable joints where the Drop Cable joints onto the Internal Cable.

Ref to the DV for the Phone Only Line. Openreach have installed a new Service at Exchanges that basically converts the line to VoIP there instead of the sub having to have a phone plugged into a Router.

This Service is only a temporary stop gap though and won’t affect the Exchanges Closure.

Re: Full fibre rollout & BT fitted (2008) line-splitter

iniltous — Sat, 08 Nov 2025 19:57:29 GMT

If the conversation to DV is done at the exchange, rather than giving the customer a free broadband connection and router, to connect the landline phone to, then ( in your case ) nothing changes , no adjustments are needed at your end , the only difference that you need to be aware of is the full national number needs to be dialed , even for local calls , but some places need to do that irrespective of DV.

Re: Full fibre rollout & BT fitted (2008) line-splitter

licquorice — Sat, 08 Nov 2025 20:13:36 GMT

As previously stated, it is not a 'splitter'. You have 2 completely separate lines which will be dealt with individually as if they were 2 separate premises.

Re: Full fibre rollout & BT fitted (2008) line-splitter

yorkspark — Sun, 09 Nov 2025 10:13:57 GMT

one thing to consider, is it really worth them paying for 2x bt accounts?

1x for the digital voice only line and 1x for the broadband + digital voice.

surely it would be financially beneficial for you to cancel the fttc and dv line and add fttc to the dv only line and only have 1x bill

Re: Full fibre rollout & BT fitted (2008) line-splitter

WSH — Sun, 09 Nov 2025 10:20:12 GMT

Yorkspark has a point. The amount of bandwidth used by the phone is nothing, especially on a modern fibre optic line. The two will share the line with no problems.