Libss7 and echo on Extensions

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Mobile operators operates own echocancellers on every 
channel, but not landlines. I operate chan_ss7 witch 
SANGOMA cards with HW echocanceller - and it helps on 
landlines.

On Friday 11 April 2008 06:55, Christopher Bautista wrote:
> Hi guys
>
> Update:
> > PSTN -> Asterisk -> SIP extensions
>
>     landline to sip extension                       .....
> noticeable echo mobile   to sip extension                
>       ..... no echo
>
> > PSTN -> Asterisk -> PSTN                   ..... no
> > echo SIP -> Asterisk -> SIP                         
> > ..... no echo
> >
> > SIP -> Asterisk -> PSTN                       .... no
> > echo
>
> I hope someone can help me.
>
> Thanks
>
> Chris



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