I just got a TDM400P with 2 FXO cards. I got it all configured and I can place and receive calls. I seem to be getting static on the call, mainly when I speak. E.g, if I call someone, I can hear them just fine, but they would hear static. Not a lot...more like a constant background "hissing" noise. What can I look at to try and troubleshoot what is going on, or is this normal? I played with the rx and tx values, but it didn't seem to make much difference.
Derek Lee-Wo wrote:> I just got a TDM400P with 2 FXO cards. I got it all configured and I > can place and receive calls. > > I seem to be getting static on the call, mainly when I speak. E.g, if > I call someone, I can hear them just fine, but they would hear static. > Not a lot...more like a constant background "hissing" noise. > > What can I look at to try and troubleshoot what is going on, or is > this normal? > > I played with the rx and tx values, but it didn't seem to make much > difference.I've had the same problem plus low volume audio when the two lines are bridged.. Adjusting rxgain/txgain does make it louder but also increases the noise. In your case make sure you're not sharing irq's. cat /proc/interrupts Also turn off printer/usb/serial (if you're not using them) in the bios. JD