[cisco-voip] FXO line quality woes

[Ryan Ratliff]

Only thing I could suggest is to run them somewhere else temporarily  
to see if it fixes the problem.

-Ryan

On Feb 8, 2008, at 2:03 PM, Paul Choi wrote:

Hmmm....would a potential problem be that the lines
are suspended (but not touching) above the circuit
breaker box for the entire building?

Paul
--- Ryan Ratliff <rratliff at cisco.com> wrote:

> I'd check cabling for any nearby power lines.  Make
> sure the router
> is grounded properly, etc.
>
> http://www.cisco.com/en/US/tech/tk652/tk698/
> technologies_white_paper09186a00801545e4.shtml#buzz
> "This problem is often caused by an electromagnetic
> source or
> telephone cables run near power lines."
>
> -Ryan
>
> On Feb 8, 2008, at 1:31 PM, Paul Choi wrote:
>
> I am having trouble with a set of eight FXO trunks
> on
> a CCME4.1 system.
>
> The customer is saying that a good percentage of
> their
> outbound calls only encounter a loud electronic hum.
> I
> have already ran impedance tests and set all ports
> to
> the recommended level. What else can I do beyond
> this
> point if the customer is still having issues with
> outbound calls?
>
> Paul
>
>
>
>
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