topic Re: Broadband speed Full Fibre 145 in Full Fibre

Broadband speed Full Fibre 145

Mark38 — Wed, 19 Nov 2025 23:40:43 GMT

Hi,

I had the BT engineers over on 13/11/25 and they installed the new Openreach Full Fibre modem and then connected an Ethernet cable from the modem to my Hub 2 router. I normally get download speeds of around 90 Mbps when I turn my laptop on, but I need to restart the laptop and after that I get speeds of around 145 Mbps, does anyone know why it happens and if it can be sorted so I get speeds of around 145 Mbps without needing to restart all the time? When I connect my mobile phone to the Wi-Fi I always get speeds of around 145 Mbps.

Thank you

Re: Broadband speed Full Fibre 145

markhawkin — Thu, 20 Nov 2025 07:14:01 GMT

90Mb/s sounds like the laptop isn't correctly negotiating a gigabit ethernet connection with the hub instead going for 100Mb/s.

The easy thing to try is a different cable as that is often the problem.

Otherwise it's looking for updated network drivers for the laptop or perhaps forcing the settings to gigabit rather than autonegotiate.

It will be the laptop rather than the Plusnet Hub but you could try a different Ethermet port on the Hub just to check.

Re: Broadband speed Full Fibre 145

Dan_the_Van — Thu, 20 Nov 2025 08:34:30 GMT

I had the BT engineers over on 13/11/25 and they installed the new Openreach Full Fibre modem and then connected an Ethernet cable from the modem to my Hub 2 router

I normally get download speeds of around 90 Mbps when I turn my laptop on, but I need to restart the laptop and after that I get speeds of around 145 Mbps

It's not clear to me if you are connecting your laptop using a LAN port or not. It would be normal for a laptop to use a WiFi connection. If you are connect using WiFi it could be the laptop has connected using the 2.4 GHz signal rather than 5 GHz

Disconnect the WiFi signal should hopefully switch it to 5GHz, I sometimes have to do this.

If you are using a LAN connection then check the previous advice given.

The Hub two GUI >Home >My devices will detail where a device has connected.

Re: Broadband speed Full Fibre 145

MisterW — Thu, 20 Nov 2025 08:42:18 GMT

@Mark38 assuming the laptop is running Windows, then make sure the wireless adapter is set to prefer the 5ghz band.

Re: Broadband speed Full Fibre 145

Mark38 — Thu, 20 Nov 2025 13:04:22 GMT

Hi,

I am connected wirelessly as I don't have a ethernet cable port on my laptop.

Re: Broadband speed Full Fibre 145

Mark38 — Thu, 20 Nov 2025 13:08:09 GMT

Also I was told by the BT engineer the cable has to be connected to the WAN Ethernet port on the Hub.

Re: Broadband speed Full Fibre 145

Mark38 — Thu, 20 Nov 2025 13:11:25 GMT

Hi,

I am connected wirelessly as I don't have a ethernet cable port on my laptop.

when you say Disconnect the WiFi signal do you mean to disconnect the Hub or reset it?

Abd what di you mean by Hub two GUI?

Thank you.

Re: Broadband speed Full Fibre 145

Mark38 — Thu, 20 Nov 2025 13:12:29 GMT

Hi,

it is wireless, how would I set to prefer the 5ghz band?

Regards

Re: Broadband speed Full Fibre 145

Dan_the_Van — Thu, 20 Nov 2025 13:28:53 GMT

@Mark38

The Openreach ONT (modem) connects to the Hub Two WAN port which is correct, unfortunately your first post has been answered with poor advice.

As I stated it is likely your laptop is connecting to the hub on the 2.4 GHz signal that has a slower speed to the 5GHz connection.

Try turning off / on the wireless adapter to see if that resolves the issue. <- I refer to the laptop wireless interface

The Hub GUI (graphic user interface) is reached here http://192.168.1.254 when connected to your home WiFi

Re: Broadband speed Full Fibre 145

jab1 — Thu, 20 Nov 2025 13:17:31 GMT

@Mark38 wrote:

Also I was told by the BT engineer the cable has to be connected to the WAN Ethernet port on the Hub.

That is the cable from the ONT to the router. It won't work at all, otherwise.

Re: Broadband speed Full Fibre 145

pvmb — Thu, 20 Nov 2025 13:43:36 GMT

@Mark38 wrote:

Hi,

I had the BT engineers over on 13/11/25 and they installed the new Openreach Full Fibre modem and then connected an Ethernet cable from the modem to my Hub 2 router. I normally get download speeds of around 90 Mbps when I turn my laptop on, but I need to restart the laptop and after that I get speeds of around 145 Mbps, does anyone know why it happens and if it can be sorted so I get speeds of around 145 Mbps without needing to restart all the time?

As long as you don't have any device that needs to use the 2.4GHz WiFi from the Hub 2 router you can log in to the Hub 2 and turn the 2.4GHz WiFi off, just leaving the 5GHz signal. That's what I did and I always get 150Mbps reported via the Test website.

BTW - The Openreach ONT (Optical Network Terminal) is not a "modem". No modem is used with Full Fibre as it is not a 'Broadband' based service operating over an analogue landline network. 😎

Re: Broadband speed Full Fibre 145

Mark38 — Thu, 20 Nov 2025 19:54:38 GMT

Hi,

Thanks.

I have already turned on and off the router and reset it.

This is what I get when I go my Hub manager, is there anything you think I should change?

Re: Broadband speed Full Fibre 145

jab1 — Thu, 20 Nov 2025 19:59:31 GMT

@Mark38 Is all your kit fairly new? What do you have which needs a Wi-Fi connection to function?

Re: Broadband speed Full Fibre 145

Mark38 — Thu, 20 Nov 2025 23:34:53 GMT

Hi,

I don't use any other devices.

So shall I'll try to turn off the 2.4GHz WiFi off, just leaving the 5GHz as attached, click save and see if I get the 145Mbps without needing to restart everytime?

Re: Broadband speed Full Fibre 145

Anonymous — Fri, 21 Nov 2025 00:02:06 GMT

"BTW - The Openreach ONT (Optical Network Terminal) is not a "modem". No modem is used with Full Fibre as it is not a 'Broadband' based service operating over an analogue landline network"

Consider how signals are translated.

Try plugging a 'router' directly into the fibres before the ONT. There will be a mismatch in the connection. There will be a mismatch in the underlying method of transmitting the data (optical to electrical conversion).

My mind says that the ONT is operating as a modem. It is converting an optical signal into an electrical signal (old style modems converted sound to electrical).

Of course, a lot of consumer grade 'routers' are not routers, but are mainly switches.

Re: Broadband speed Full Fibre 145

Mark38 — Fri, 21 Nov 2025 00:04:05 GMT

I only use my laptop and occasionally my mobile phone and printer.

Re: Broadband speed Full Fibre 145

jab1 — Fri, 21 Nov 2025 07:20:34 GMT

OK, at a guess then the laptop is the 5Ghz device, the printer the 2.4Ghz one, so you do need both bands. That suggests the problem is the laptop.

Re: Broadband speed Full Fibre 145

MisterW — Fri, 21 Nov 2025 07:36:29 GMT

@Mark38

it is wireless, how would I set to prefer the 5ghz band?

Using Device Manager

Open Device Manager by pressing Win + X and selecting it, or by searching for it in the Start Menu.
Expand the Network adapters section.
Right-click on your wireless adapter (it may have "Wireless" or "Wi-Fi" in the name) and select Properties.
Go to the Advanced tab.
Find the Preferred Band or Band Preference property in the list.
Change the value to Prefer 5GHz band from the dropdown menu.
Click OK and restart your computer to apply the changes

Re: Broadband speed Full Fibre 145

krusty — Fri, 21 Nov 2025 10:05:55 GMT

@Anonymous wrote:

"BTW - The Openreach ONT (Optical Network Terminal) is not a "modem". No modem is used with Full Fibre as it is not a 'Broadband' based service operating over an analogue landline network"

Consider how signals are translated.

Try plugging a 'router' directly into the fibres before the ONT. There will be a mismatch in the connection. There will be a mismatch in the underlying method of transmitting the data (optical to electrical conversion).

My mind says that the ONT is operating as a modem. It is converting an optical signal into an electrical signal (old style modems converted sound to electrical).

Of course, a lot of consumer grade 'routers' are not routers, but are mainly switches.

Modem stands for modulation-demodulation so you can exand it to an ont too.. And an ont is effectly a modem plus switch.

modern wifi routers are on a basic level; a switch, firewall, wireless ap, etc.

Re: Broadband speed Full Fibre 145

pvmb — Fri, 21 Nov 2025 19:31:36 GMT

@Anonymous wrote:

"BTW - The Openreach ONT (Optical Network Terminal) is not a "modem". No modem is used with Full Fibre as it is not a 'Broadband' based service operating over an analogue landline network"

Consider how signals are translated.

Try plugging a 'router' directly into the fibres before the ONT. There will be a mismatch in the connection. There will be a mismatch in the underlying method of transmitting the data (optical to electrical conversion).

Impossible! There is no optical input socket on a router. The ONT connects to the router via an electrical Ethernet circuit.

@Anonymous wrote:
My mind says that the ONT is operating as a modem. It is converting an optical signal into an electrical signal (old style modems converted sound to electrical).

So it's a media converter, optical digital signal to electrical digital signal?

Old style modems convert an electrical digital signal into an electrical analogue signal and vice versa.

What does Wikipedia say?

https://en.wikipedia.org/wiki/Modem

"A modulator-demodulator, commonly referred to as a modem, is a computer hardware device that converts data from a digital format into a format suitable for an analog transmission medium such as telephone or radio. A modem transmits data by modulating one or more carrier wave signals to encode digital information, while the receiver demodulates the signal to recreate the original digital information."

But it also says:

https://en.wikipedia.org/wiki/Modem#Optical_modem

"...installed inside or outside a house to convert the optical medium to a copper Ethernet interface..."

"They are not a modem,[disputed – discuss] although they perform a similar function and are sometimes referred to as a modem."

Let's decide to leave it there. 😉