This topic

Full fibre

pandaman — Fri, 29 May 2026 14:38:16 GMT

I had full fibre broadband installed last week, a free upgrade, (for now). As my pc lives upstairs and to save having cable running who knows where, I put a 20 metre ethernet cable in place of the phone cable I had previously installed. I had to enlarge holes in 2 walls and a ceiling in the garage plus the floor in the room where my pc was as the cable ends were bigger than the phone cable ones. The engineer was very efficient and pleasant, he altered the settings on my router for me as well. BUT for what I ask? It's not full fibre at all, only part fibre from the underground junction box in the path 20 feet from my front door. It is still copper from the green above ground box in the next street. My internet speeds are no better than they were before so what was the point? Very disappointed with it.

Re: Full fibre

iniltous — Fri, 29 May 2026 14:53:07 GMT

What ? , if you had FTTP fitted , the fibre plugs into the newly fitted ONT (a mains powered box fitted inside ) , if you ran your own Ethernet (copper ) cable from here to the router location it’s still called FTTP …if you don’t have an ONT , then your first statement is wrong , you didn’t have full fibre installed last week ….perhaps you can clarify, ONT fitted or not .
I suspect your poor performance from FTTP , is because you have ran an Ethernet cable that isn’t capable of more than 100Mb or it is faulty.

FTTP come from a green box in the street , that’s FTTC , FTTP products are called Full Fibre , FTTC is called partial fibre , this is displayed when you order , plus if its FTTC a visit isn’t usually necessary you self install it yourself.

Re: Full fibre

gg30340 — Fri, 29 May 2026 14:50:15 GMT

Full Fibre or FTTP Fibre to the Premises does not come from the "green box" in the street then copper to your property. That is FTTC, Fibre to the Cabinet.

If you have FTTP fibre is supplied right up to your property. You would have a small grey box fitted to the outside of your property and a small white box, the ONT or "fibre modem" installed inside your property which your BT hub would connect to.

See link

Full Fibre | FTTP Broadband | Fibre to the Premises | BT

Re: Full fibre

WSH — Fri, 29 May 2026 15:19:38 GMT

Are you sure this was not just an upgrade to Digital Voice (DV)?

There is a lot of confusion surrounding DV and Full Fibre (FTTP) but they are actually separate things and DV will run quite happily over the old copper. It does not necessarily involve an upgrade to FTTP.

As has been said, if it is FTTP, he will have fitted a new box to the inside wall, with lights on it, called an Optical Network Terminal (ONT).

If you do have this then, again as has been said, the ethernet cable may well be the problem. It needs all 8 wires connected for anything faster than 100Mb/s. One faulty connection and it drops back to 100Mb/s. Only Cat 5e and above will provide this. (The old Cat 5 was only four wires, although I doubt you can even buy that now).

Re: Full fibre

pandaman — Fri, 29 May 2026 15:54:53 GMT

I already have digital voice installed. There is a grey box on the outside wall and one was fitted inside which has the lights on where the old phone box was. So as mentioned maybe the ethernet cable slowing it down. The ethernet cable was a cat 6. The engineer made a point of asking me this. Any way I was happy with the speed I had before so shouldn't moan I suppose as it seems the same as it was. Thanks for info.

Re: Full fibre

gg30340 — Fri, 29 May 2026 15:56:32 GMT

What FTTP package did you order?

Re: Full fibre

iniltous — Fri, 29 May 2026 16:05:47 GMT

If you had F2 (Fibre 2 80Mb ) on FTTC and were close enough to the ‘cabinet’ that you received 80Mb from it , and you changed to FTTP but remained on F2 speed , then there wouldn’t be any noticeable change , it’s only if your FTTC speed was much reduced because of the distance to the cabinet or you took a much higher speed from FTTP that you could hope to notice any difference, and even then probably not noticeable in real world use , only if you performed a speed tests and compared the previous FTTC one to the FTTP one.

It’s only if you changed to 500Mb or faster when you took FTTP , you could expect to notice any difference at all .

Re: Full fibre

pandaman — Fri, 29 May 2026 17:21:15 GMT

I didn't order anything, just had a message from BT to say I was getting a free upgrade to full fibre and gave me a date for the engineer to visit.

Re: Full fibre

pandaman — Fri, 29 May 2026 17:23:28 GMT

Thanks, not an expert, find it a bit baffling to be honest.

Re: Full fibre

36ULW — Fri, 29 May 2026 18:03:29 GMT

Your speed hasn’t been upgraded, only the line from FTTC to FTTP. You’re probably on the same 55/10 or 80/20 package you had when you were on FTTC.

If you need faster speeds than what you has previously you’d have to upgrade your speed. Depending on what Head End Technology your PON is on you can get up to 1.6Gbps.