Re: ADSL noise while on the phone

In an earlier contribution to this discussion,
John Chajecki <jchaj@xxxxxxxxxxxxx> wrote:

Hi,

I have had my attention drawn recently to the amount of cracking on
our telephone line. Upon further investgation I found that this was
being generated by our Linksys AM200 ADSL modem. Once the modem was
disconnected the line was clear. Assuming a fault I sent it back to
the vendor who acknowledged a fault and sent me a replaceent.
Unfortunately, the replacement exhibits the same kind of crackly
noise. Assuming an inherent fault with this model, I tried a
completely different brand of modem only to find that this too has
the same problem.

Now it was my understanding that you can use the phone line and be
online at the same time and that broadband equipment was designed to
allow you to do this. Being thorough I also tested various kinds of
ADSL filters - I have 4 to hand, ranging from cheap (£2.00) to very
expensive (£10).. Neither made any difference.

My question is, is it normal to have this cracking on an ADSL line
while the modem is connected? Can one get an ADSL modem that does not
exhibit this kind of problem? What models are recommended?

I do not have cable so ADSL is the ony option apart from dial-up.


Have you checked for noise on the line by doing a BT Quiet Line test? Dial
17070 and then press 2 when prompted.

Do this with and without the modem connected. Also, if necessary, do it with
your handset plugged into the test socket (behind the master socket
faceplate) to eliminate any extension wiring you may have.

As others have said, it's also worth trying a different phone handset -
since some seem to be more sensitive to noise than others.

If you can demonstrate noise when only a known good handset is plugged into
the test socket, you have the evidence to get BT to look at the line.
--
Cheers,
Roger
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