[Asterisk-Users] Terrible TICKING sound

[tmpm]

>Roger that Martin, ...dirty power is a real bite in some places. Im 
>fortunate things are well behaved here, (In 20 years of computing Ive only 
>vaporized one UPS) But everything of high value here is on a UPS. Linux * 
>box, cablemodem, switches, WAP are all backed up on UPS. Buy a cheap one 
>that exceeds the wattage you need for every device or cluster them, and 
>remove the little tiny gell-cell and tie it to a truck battery kept on 
>float at about 70-100ma and youre golden. (Of course maintain water and 
>terminal cleanlyness) I also ran a separate line to the computer room, 
>kept all the other stuff off of it, and have a OVP circuit breaker 
>instaled in the box. I'd rather the system went down than burned up. 
>Having worked in telephony I understand the value of battery backup. Gald 
>to hear the ticking problem was resolved.





>I found that it also can come from the power that you are powering the
>PC with.
>
>My asterisk box emit's ticks especially on my ISDN phones, it didn't do
>so before i moved it recently and the only difference i can see is the
>powerbar.
>
>Originally i had the box on a APC powerbar with filters etc. Now it's on a 
>plain one without filters.
>Moving it back on a powerbar with filters solves the problem.
>
>Kind regards,
>Martin List-Petersen
>martin at list-petersen dot net