[Asterisk-Users] Sipura-SPA2000 background noise

[Tony Hoyle]

Kevin Walsh wrote:
> Try playing with the "FXS Port Impedance" in the "Regional" settings.
> Mine is set to 600.  I imagine that a mismatch here could cause that
> sort of thing.
> 
I've just been through them all... I can change its properties (some 
have a lot of hum, some have a lot of hiss).

The true extent of the problem is apparent through the on-hold music (I 
was dialling myself to test!).  The noise is louder than that, so it 
drowns it out.

Tony