[asterisk-users] hum noise

[Steve Edwards]

On Sat, 28 Mar 2009, Rilawich Ango wrote:

> We are experiencing the hum noise when the conversion of 2 parties is 
> established.  How can we eliminate that noise?  ango

It depends on the source :)

What computer, what type of connection (Zap (I'm a 1.2 Druid), SIP, IAX), 
what interface hardware (none, t100p, etc.)? Anything else like "the 
channel bank sits atop the isolation transformer for the entire building?"

I built an Asterisk server out of an old Fiire Station. It's Via micro-atx 
in a "shoe-box" and a tdm400. Having everything crammed into such a small 
space put the horizontally mounted tdm card millimeters above the CPU. The 
noise during "dialtone" was so bad I scrapped the project there and then.

Thanks in advance,
------------------------------------------------------------------------
Steve Edwards      sedwards at sedwards.com      Voice: +1-760-468-3867 PST
Newline                                             Fax: +1-760-731-3000