cancel
Showing results for 
Search instead for 
Did you mean: 

Speed dropping recently - is our SNR ok?

NomadGames
Interested
Posts: 1
Registered: ‎24-01-2018

Speed dropping recently - is our SNR ok?

Hi, we've started getting very slow speeds at work recently, (fixed by rebooting the router).

I wondered if our SNR is low and that's part of the problem?

I've attached a snapshot from our DrayTek Vigor 2860 - it looks like downstream SNR is 3 dB?

 

Thanks 

-Mat Draper

3 REPLIES 3
Baldrick1
Moderator
Moderator
Posts: 9,598
Thanks: 4,319
Fixes: 345
Registered: ‎30-06-2016

Re: Speed dropping recently - is our SNR ok?

Welcome to the forum. First of all your router stats are showing that you have a 80/20 service so this should have been posted on the fibre board EXCEPT you also say that this is a 'work' connection, which probably means you have a business account so this should be on the Business board? Which? I have no idea!

Anyway let's address the SNR question. A low SNR under these circumstances generally means that the DLM in your fibre cabinet has reduced the SNR to maximise your speed, hence the 80Mbps speed being reported. If interference was detected that caused excessive transmission errors on your line then the DLM would automatically increase the SNR. The effect of this would be that the detected transmission errors would decrease, as would the sync speed.

If you're detecting slow download speeds then that's a different problem.

 

Moderator and Customer
If this helped - select the Thumb
If it fixed it,  help others - select 'This Fixed My Problem'

Mav
Moderator
Moderator
Posts: 21,652
Thanks: 4,452
Fixes: 504
Registered: ‎06-04-2007

Re: Speed dropping recently - is our SNR ok?

Moderator's note by Mike (Mav): This thread is now in the appropriate board.

Forum Moderator and Customer
Courage is resistance to fear, mastery of fear, not absence of fear - Mark Twain
He who feared he would not succeed sat still

Gandalf
Plusnet Help Team
Plusnet Help Team
Posts: 25,902
Thanks: 9,440
Fixes: 1,511
Registered: ‎21-04-2017

Re: Speed dropping recently - is our SNR ok?

Hi Mat.

Our tests are showing your router in sync at 80mbps. An SNR of 3db means that your line is pushing as much speed as it can to your router which is likely the reason why your router is in sync at the highest speed possible for FTTC.

 

Can you run a BT speedtest at http://www.speedtest.btwholesale.com using a wired connection, completing the further diagnostics at the end? This will store the result on the supplier system and will help us in reporting a fault to our suppliers.

If this post resolved your issue please click the 'This fixed my problem' button.
From 31st October 2022, I'll no longer have a regular presence here as I'm moving on to a new role within Plusnet.

 Anoush Mortazavi
 Plusnet Help Team