I have a TT supplied D-Link 3780 which I believe is the/or one of the routers they supply for Fibre and while I'm only on ADSL and sat near the router, I've found it's a vast improvement on what they used to supply.
I'm using that one at the moment as I get a better natural sync speed and have it set to Force 300mbps otherwise the default up to 270 is only knocking out 54mbps.
7800N FTTC Speeds
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- Posts: 15
- Joined: Fri Mar 15, 2013 8:18 pm
Re: 7800N FTTC Speeds
Well, I can't explain it, but after 24 hours back in its box the 7800n has decided to pass on all of the wonderful fibre speed. Speedtests are now 55meg.
I tried the talktalk router for 24 hours and it was much improved over the rubbish they used to send out right enough. Only pitfall was the wifi range, it couldn't reach my patio where as the Billion covers it no problem.
I would love to leave this thread with a worthy conclusion that future users could try if they have the same issue.......................so if you are capped at 38meg on the 7800n and have stumbled upon this post via google:
Spend 2 nights reflashing, wiping, trying all the old firmwares, swearing, trying all the qos config setting in notepad, scratching your head, missing the action in the world cup, then switch it off, replace it with the ISP provided version, walk away for 24 hours, swap back to the 7800n and voila. All is well
I tried the talktalk router for 24 hours and it was much improved over the rubbish they used to send out right enough. Only pitfall was the wifi range, it couldn't reach my patio where as the Billion covers it no problem.
I would love to leave this thread with a worthy conclusion that future users could try if they have the same issue.......................so if you are capped at 38meg on the 7800n and have stumbled upon this post via google:
Spend 2 nights reflashing, wiping, trying all the old firmwares, swearing, trying all the qos config setting in notepad, scratching your head, missing the action in the world cup, then switch it off, replace it with the ISP provided version, walk away for 24 hours, swap back to the 7800n and voila. All is well

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- Joined: Tue Jul 26, 2011 10:31 am
- Location: Co Durham
Re: 7800N FTTC Speeds
Wonder if it needed a Training Period ?
I'd heard that Fibre needs time to settle and that you should leave it connected for a while - perhaps sticking the 7800N on so soon was the cause of the drop ?
I'd heard that Fibre needs time to settle and that you should leave it connected for a while - perhaps sticking the 7800N on so soon was the cause of the drop ?
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- Posts: 15
- Joined: Fri Mar 15, 2013 8:18 pm
Re: 7800N FTTC Speeds
Yes, there is a training period on fibre, but its the openreach modem that does all the work in terms of that and that should be left on during the training perdiod. Speed should be identical no matter which router is used provided the router can handle the speed via its EWAN port.
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- Joined: Mon Aug 04, 2014 9:55 pm
Re: 7800N FTTC Speeds
Hi, I have what seems another crazy 7800N to BT Infinity issue....
On Plusnet now for 10 years, just moved today over to 80/20 FTTC service, and kept my 7800N.
It works, but my upload is an impressive 18meg, but the download has stayed the same as the ADSL2 result of 5.8 meg...
BT line speed checker says my profile is set to 71.22...
I read the QoS threads, never used it or have anything set....
I've done manual reset and configured from scratch....
Latest 1.06h.dt2 firmware - updated yesterday ready
What else can I try? ....it's starting to seriously ***** me off !!!
On Plusnet now for 10 years, just moved today over to 80/20 FTTC service, and kept my 7800N.
It works, but my upload is an impressive 18meg, but the download has stayed the same as the ADSL2 result of 5.8 meg...

BT line speed checker says my profile is set to 71.22...
I read the QoS threads, never used it or have anything set....
I've done manual reset and configured from scratch....
Latest 1.06h.dt2 firmware - updated yesterday ready
What else can I try? ....it's starting to seriously ***** me off !!!
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- Posts: 5398
- Joined: Tue Jul 19, 2011 4:30 pm
Re: 7800N FTTC Speeds
Have you tried to dial into your open reach modem using a PC PPPOE connection and see if there is any change on the download speeds?9designs wrote:Hi, I have what seems another crazy 7800N to BT Infinity issue....
On Plusnet now for 10 years, just moved today over to 80/20 FTTC service, and kept my 7800N.
It works, but my upload is an impressive 18meg, but the download has stayed the same as the ADSL2 result of 5.8 meg...![]()
BT line speed checker says my profile is set to 71.22...
I read the QoS threads, never used it or have anything set....
I've done manual reset and configured from scratch....
Latest 1.06h.dt2 firmware - updated yesterday ready
What else can I try? ....it's starting to seriously ***** me off !!!