[Asterisk-Users] PowerEdge 17500 with TDM400P - 4 FXO -- NMI, loud noise when dialing out

[Andrei (MPI)]

Guys,

If anybody interested, removing USB support from Debian kernel (2.4.27) 
solved the problem.

Thank you for your help.
Andrei

Andrei (MPI) wrote:

>   ...In about 6-8 hours, when I would try to dial out  from any 
> extension through Zap/1 ... Zap/4 (I have group #1 defined) I would 
> hear continuous loud noise for 20 seconds - then silence. Call stays 
> connected but apparently TDM400P is not even picks up the line to 
> dial. No sounds could be heard after that. Repeat dials for any number 
> of times - same thing.