[asterisk-users] High Pitched Noise

[Rob Schall]

Question:

After about having the server running for about an hour, our callers
occationally hear a high pitched beep that lasts the entire call. In
some cases, the noise doesn't start until a minute or 2 into the call,
while others last the entire call. In some of the more serious cases,
calls are dropped after the noise has occurred as well.

Another symptom has been really bad static on a specific channel. After
reseating the card to try to fix both this as well as the problem above,
the problem usually goes away, but it seems to come back quicker each
time. Also, the channel that the static occurs on changes after each
reseating (after some time).

Could this just be a bad digium card? Or could it be a bad PCI bus and
we should try a new PC? Doesn't seem like an asterisk problem, but I
won't rule it out until I know what it is.

Any thoughts?
Rob