Hi Jennifer

The Google suggestion doesn’t sound right to me for your phone and computer set 
up.

Need to know more about your actual house cabling for phone and modem to offer 
particular suggestions.   Is there no noise from the cordless phone (with 
filter) but noise from the extension phones?  Do you have an ADSL 2+ service?  
Does the wall socket filter include a splitter function?  Is this the first 
entry point from street cable? Do you have filter/splitters on ALL of your wall 
sockets?   Early users of ADSL probably used individual filters that plugged 
into the phone sockets throughout the house .  Later on it was more usual to 
install the filter/splitter right at the street cable entry point so the phone 
and modem connections were split right at the source.  Only one device to go 
wrong!

Look at the website for the manufacturer of the filters (c10 Communications) 
for an explanation of types and connections:   www.c10.com.au

Filters do fail from time to time. Noise gradually gets worse.  If you have old 
filters for ADSL1 they probably were not manufactured for the higher speed 
ADSL2+.   I don't need filters on my service, but I used to have identical 
filter/splitters at all of my wall sockets, but just the socket nearest the 
computer actually used the modem outlet.  

Cheers
Alan

 
On 20 May 2015, at 11:28 am, Jennifer Lefroy <[email protected]> wrote:

> We have a cordless phone base running from a wall mounted socket.  It has an 
> ordinary in line filter.  There seems to be a suggestion on Google that a 
> filter that actually clips over the wall plate might help in lessening the 
> background noise which occurs on it, on the second handset and another 
> standard phone extension connected to a phone extension socket.   Our router 
> is connected to a different  outlet in another room.
> 
> Has anyone had a success with this method, please?
> 
> Regards, 
> Jennifer
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