If my audio system is on but inactive I occasionally get strange dial-out/modem noises through the speakers even though I don't have a modem.

A check on processes or the activity graph on Task Manager doesn't show any unusual activity coinciding with the noise - anybody got a clue?

That will be the mobile phone polling for a cell

it does sound like its your mobile, try moving it away from the unit

I thought that as well but it happens when my mobile is switched off as well.

Doh - just realised maybe its the 3G card that I use for my internet connection that tries to connect even when not being used - will try pulling it out. But it is strange that it doesn't do it when trying to connect or being connected or disconnecting.


[Edited on 8/4/07 by Ivan]

Youll probably find that it mutes the relevant sound channel when its connecting. Things like TV cards often will unmute sound when turned on then mute again after.

Gremlins?