[Asterisk-Users] annoying noise on analog phones on tdm400p

[Eric "ManxPower" Wieling]

Sounds like a classic case of the card being on the same IRQ as some 
other device in the system.  "cat /proc/interrupts" will give you 
additional information.  You'll have to move the card to a different 
slot if you find that it is sharing an IRQ.

Thomas Artner wrote:
> hmm.. does really nobody had such an issue before?
> 
> 
> Thomas Artner wrote:
>> Hi!
>>
>> I am using asterisk with two tdm400p cards.
>> Sometimes (one call out of ten), when a call comes in and is taken,
>> there is some terrible noise for a short time in the line (for about a
>> second).
>> Both partys can hear the noise. And sometimes the call has to be hung
>> up, because the noise doesn't disappear.
>>
>>
>> Has anyone any idea where the problem could be?


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