[Asterisk-Users] Static on outgoing calls using either X100P or TDM400P

[Ryan Courtnage]

Ben Merrills wrote:

>>Hello.  I've seen several posts talking about line quality using Digium 
>>cards that are sharing IRQs or on machines where X is running but after 
>>trying all of those fixes I am still having a problem with line static 
>>on outoing calls. 

>Apart from that, get a line test done. Your telcom provider should do
>one at your request.
>
Any idea what you would ask the telco to test for? 

I too have seen tdm400ps stop working and output only static noise 
(requiring wcfxs module reload).  The solution to the problem is never 
the same.  Sometimes changing PCI slots, relocating the computer, using 
a noise reducing powerbar, even changing computers completely.  In all 
cases, I'm not 100% confident that the problem has been resolved for good.

If there is a phone-line condition that will trigger the tdm400p driver 
to go into this non-functional state, I'd love to know what it is, and 
how to test for it.

Thanks
Ryan