massive noise margin swings and dropouts

rjk · 26 Aug 2010 at 20:29

any help appreciated on this. currently on Be and have tried three different routers to come to this conclusion

the netgear displays it best so i will post a pic of that.

basically i connect, downstream noise margin is at around 8-12db then slowly the noisemargin creeps down to zero

then turns into this...

im not even really sure how to sort this out.

as soon as it goes to this then the connection wont work and will stay like that until the router is restarted.
tried on my dlink, belkin and netgear routers and the same happens.

i reset the router and its fine again for another five minutes, then it drops and i have to reset.

everything is set up correctly, master socket, tried the test socket.

dont know what else to do.
any suggestions that would allow me to use the internet for more than 4 minutes at a time would be great.

ste_bla · 26 Aug 2010 at 20:45

Damaged filter happen to me same issue

rjk · 26 Aug 2010 at 20:52

oooohhh

good suggestion

i have a few spare

will try swapping some around now

Locky · 26 Aug 2010 at 21:00

Sometimes massive noise spikes on the line can cause the router to display BS on the NM readout.

Didn't realise how shocking your line is rich.

Edit try an ADSL face plate too if you already havn't

Can't really link you to one.

rjk · 26 Aug 2010 at 21:03

right tried swapping filters over and it seems a little more stable

just got to test overnight

the noise margin is still massive.

seems that even when the connection drops out when the NM goes to 2billion

the router status says connected and it still says that everythign has full access to the internet.

its like its freezing

benftl · 26 Aug 2010 at 21:13

That noise margin isn't correct, it's an impossible figure and is being misreported, ignore it.

What Netgear modem are you using?

s-p · 26 Aug 2010 at 21:14

benftl said:
That noise margin isn't correct, it's an impossible figure and is being misreported, ignore it.

What Netgear modem are you using?

Yup, the Netgear is simply misreading a SNR of <=0.

rjk · 26 Aug 2010 at 21:35

its an older netgear the DG834G iirc

its doing it on all three routers?

its like the connection freezes, everything reports as online but i cant use anything.
:confused:

benftl · 26 Aug 2010 at 22:05

What version dude? Try flashing with DGTeam firmware.

rjk · 27 Aug 2010 at 18:01

its on the latest DGTeam

as i mentioned its all three routers as i wanted to limit the router as being a possible cause of the dropouts

k3vst3r · 27 Aug 2010 at 18:03

anything else connected to phone line like fax machine, skybox

V F · 28 Aug 2010 at 01:31

What's wrong with a Sky Digi box connected? I have 3 connected to the line and has no bearing.

rjk · 28 Aug 2010 at 09:38

k3vst3r said:
anything else connected to phone line like fax machine, skybox

only thing i have on the phone line is the router at the moment

dovey · 28 Aug 2010 at 10:25

I have had this issue on a netgear dg834gv3. The noise margin starts off at 9 and after a few mins apparently drops to between 3 and the number you are getting. In the end I switched back to a bt voyager router due to the netgear dropping the connection a lot at night. The voyager router now reports a steady 9-10 during the day and 6 at night.

There may still be a problem with your line though, your upload speed seems a bit slow to me.

ncjok · 28 Aug 2010 at 18:23

Done a quiet line test?
- Analogue telephone connected directly into the test socket (at the master socket), tel: 17070 option 2.