[asterisk-users] "scratchy" sound on TE410P

[Jeff LaCoursiere]

On Mon, 8 Nov 2010, Daniel Tryba wrote:

> On Sun, Nov 07, 2010 at 10:26:59AM -0500, Jeff LaCoursiere wrote:
>> asterisk 1.4.35
>> dahdi 2.3.0.1+2.3.0
>> one span on a 4port T1 card
>>
>> Got complaints this morning that outbound and inbound calls were
>> "scratchy" and I made a few test calls.  It kind of sounds like the gain
>> is too high somewhere, and the audio is overdriven.
>
> It could be the echo canceller, I had this kind of problem with OSLEC. I
> also thought the PRI provider was sending clipped audio. I switched to
> the VPM450 daughterboard and since audio has been crystal clear. What is
> your setup for echo cancelling?
>

I inherited this board, and don't think it has the echo canceller 
daughterboard.  Is there a way to query for it without taking the machine 
down?  It is loading MG2 otherwise.

Using dahdi_maint -s 1 I am tracking a lot of errors, anyway, so have the 
carrier taking a look this afternoon.

Cheers,

j