asterisk users - Feb 2007 - Strange Noise

Hi,
today with my asterisk during a call I had a very strange noise, it was the
typical noise that you can have  when your device uses a bad power supply.
I change phone and I had the same behavior after I while I tried again and
the noise was disappeared.

What can I check?
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
http://lists.digium.com/pipermail/asterisk-users/attachments/20070222/962c44bd/attachment.htm