electrical interference on ADSL with ETEC router causing lost connection

Has anyone come across a problem with connections their ADSL service
being repeadtedly lost. We have an ETEC router and 2 meg service from
Mistral. Over last week we were getting synch loss on the line every
hour/ 2 hours. We checked everythin..changed the router , lead,
filter.. had BT check the line .. it works of course when thye are
here and then one guy suggested we might be getting electrical
interference.. its in a standard computer rack with a standard compaq
server and UPS ... usual configuration with the UPS at the bottom....
there is then a 2ft gap before a shelf one which the firewall and ADSL
router sit.

To my mind this is comms kit which is naturally installed in a comms
rack next to power supplies and servers etc... surely it should be
screene dfor this type of application ....

Anyone else had any similar experiences??

cheers

rob

I saw a message recently from someone having disconnection problems, it
turned out to be his central heating thermostat causing the interference
when it cut in and out.

jsp21c wrote:
> I saw a message recently from someone having disconnection
> problems, it turned out to be his central heating thermostat
> causing the interference when it cut in and out.

Is now the correct time for a timely rememinder about all those wonder
chaser/musical Xmas lights which do cause problems with DSL???

--
B-)
Don't practice safe hex,
do it!!!

Bobsa, Is the mains power feed to the rack filtered? Interference might be affecting the router if it's plugged directly into the mains. They generally have a cheap voltage adapter. Had experience of one of these failing before and realised what a single point of failure it was.
You could invest in a filtered power adapter that would remove any noise and also protect against surges.
http://www.tlc-direct.co.uk/Main_Ind...ion/index.html
or www.maplin.co.uk DS44X

Graham

"Bobsa" <(E-Mail Removed)> wrote in message news:(E-Mail Removed) om...
> Has anyone come across a problem with connections their ADSL service
> being repeadtedly lost. We have an ETEC router and 2 meg service from
> Mistral. Over last week we were getting synch loss on the line every
> hour/ 2 hours. We checked everythin..changed the router , lead,
> filter.. had BT check the line .. it works of course when thye are
> here and then one guy suggested we might be getting electrical
> interference.. its in a standard computer rack with a standard compaq
> server and UPS ... usual configuration with the UPS at the bottom....
> there is then a 2ft gap before a shelf one which the firewall and ADSL
> router sit.
>
> To my mind this is comms kit which is naturally installed in a comms
> rack next to power supplies and servers etc... surely it should be
> screene dfor this type of application ....
>
> Anyone else had any similar experiences??
>
> cheers
>
> rob

In article <bm7a5q$idsjr$(E-Mail Removed)>, Graham Tavener
<(E-Mail Removed)> writes

>> interference.. its in a standard computer rack with a standard compaq
>> server and UPS ... usual configuration with the UPS at the bottom....
>> there is then a 2ft gap before a shelf one which the firewall and ADSL
>> router sit.
>>
>Bobsa, Is the mains power feed to the rack filtered? Interference
>might be affecting the router if it's plugged directly into the mains.
>They generally have a cheap voltage adapter. Had experience of one of
>these failing before and realised what a single point of failure it was.
>You could invest in a filtered power adapter that would remove any
>noise and also protect against surges.

The UPS may well be able to do all that (depends if it's on/off line).
--
David Mahon
Due to the recent virus attacks, please email any
replies to newsreply_01 AT amigo.co.uk

Strangely after I sent my post re: cheap adapters mine failed tonight and took down the adsl router! Just had the soldering iron out to make some repairs.
Of course your'e right about the UPS.


"David Mahon" <(E-Mail Removed)> wrote in message news:VL+GYTCdY6h$(E-Mail Removed)...
> In article <bm7a5q$idsjr$(E-Mail Removed)>, Graham Tavener
> <(E-Mail Removed)> writes
>
> >> interference.. its in a standard computer rack with a standard compaq
> >> server and UPS ... usual configuration with the UPS at the bottom....
> >> there is then a 2ft gap before a shelf one which the firewall and ADSL
> >> router sit.
> >>
> >Bobsa, Is the mains power feed to the rack filtered? Interference
> >might be affecting the router if it's plugged directly into the mains.
> >They generally have a cheap voltage adapter. Had experience of one of
> >these failing before and realised what a single point of failure it was.
> >You could invest in a filtered power adapter that would remove any
> >noise and also protect against surges.
>
> The UPS may well be able to do all that (depends if it's on/off line).
> --
> David Mahon
> Due to the recent virus attacks, please email any
> replies to newsreply_01 AT amigo.co.uk

Bobsa wrote:

> To my mind this is comms kit which is naturally installed in a comms
> rack next to power supplies and servers etc... surely it should be
> screene dfor this type of application ....

Well I would expect that to be a consideration for serious comms kit
like cisco HP etc but not from eTEC. I mean it is not serious comms kit
it is cheap stuff designed to a price for the home market.

Hiya,

I have an Etec dsl router and have been experiencing the same problems,
though I do have something you can try which has helped me (a bit).

With mine, it turned out not to be interference on the adsl side, but on the
local lan side. It seems very strange that interference on the LAN can
cause the ADSL (wan) connection to be lost, but thats what appears to be
happening. I was just online looking for a solution actually...

When it was happening to me, I disconnected everything except one machine,
and it worked fine. I then started reconnecting nodes one at a time, and
when I got to the last node (which happened to be the furthest away in the
house and thus the longest cat5 cable) the adsl went offline. Strange. I'm
not entirely sure what the hell causes the interference to cross the gap
between local network and the adsl, but I guess the interference going into
the router is enough to cause problems.

My temporary solution has been to leave that node off the network for the
time being, while I try to figure out what powerline/other source of
interference, the cat5 must be running over to be causing the problem.

This may not be your problem of course, but if you do figure it out... let
me know ;-)

Cheers,
Rob

Well everyone thanks for your posts, nice to know I'm not alone..
haha.

finally got it sorted, after changing the router for another supplied
by Mistral and the cable and the filter and going mad. then I changed
the power supply provided with it as well. hmmmm it seemed to be
better but still failed at least twice a day. finally took the whole
ADSL kit out of the cab and put it on the windowsill. Bang it worked
didn't lose it once. Changed the old power supply back synch started
to drop out... changed it back quick.

After two days of running clean I put it back in the cab, testing the
best location by monitoring ping responses...a bit of trial and error,
plus routing cable to the wall box out of the cab all together. It
seemed the proximity of anything to the ADSL line cable caused all
sorts of problems. So I found a good spot.. getting 10 - 20ms
response and left it there. not a murmur since.

subsequently for a test I plugged a network cable into the ETEC router
to check stuff within and without the firewall... suddenly pings
started going astray depending on the proximity of the cable to the
ADSL cable.

Never thought this would be so so sensitive but learnt some big
lessons about the flakiness of this service.


what made it more infuriating was the circuitous route to deal with
the service provider, bt, bt's engineers, all referring things back to
each other aargh.

Oh one last thing depsite two BT engineers testing the plug in filters
supplied by Mistral and giving them a clean bill of health.. the third
guy changed the whole face plate for a BT ADSL item...

All in all a bit of a rats nest of problems...moral of the tale is

Keep that ADSL box and cable away from EVERYTHING....

cheers

rob