[Asterisk-Users] SIP and ECHO

[Brian West]

I get no echo on mine.. but you can check to make sure your line isn't
reversed.  A reverse wired jack can do that.

bkw

On Thu, 28 Aug 2003, Brian J. Schrock wrote:

> I can minimize doing those tricks, but I cannot seem to get it to go
> away.
>
> On Thu, 2003-08-28 at 11:33, Dan wrote:
> > ----- Original Message -----
> > From: "Brian J. Schrock" <brians at anistonetech.com>
> > To: <asterisk-users at lists.digium.com>
> > Sent: Thursday, August 28, 2003 6:16 PM
> > Subject: [Asterisk-Users] SIP and ECHO
> >
> >
> > > Hello,
> > >
> > > I have read the information on echo and SIP in the FAQ and I have
> > > scoured the mailing list for possible solutions, but as yet I have not
> > > been able to get rid of this echo.
> > >
> > > I have a Sip phone, Digium 4 Port FXS, and 3 Digium FXO cards installed
> > > into an asterisk server. If I call between the Sip Phone
> > > (Budgettone-100) and the 4 FXS ports everything sounds great. If I call
> > > out to the PSTN through the FXO cards I get horrible echo, I have even
> > > been able when talking loud enough to get a horrible feedback loop
> > > going. I have tried 4 different echo cancellers in the Makefile for the
> > > Zap drivers and nonoe of them changed the situation.
> > >
> > > I have echocancel = (Any where from 1 - 256, I have tried alot of
> > > different values), and I have echocanelwhenbridged = yes.I only hear the
> > > echo start when the call gets bridged onto the outgoing PSTN lines.
> > >
> > > Is there anything I can do?
> > >
> > > Brian J. Schrock
> > >
> >
> >
> > Hi,
> >
> > For me:
> >
> > rxgain=0.8
> > txgain=0.8
> >
> > in zapata conf do the trick.
> > Now the echo is allmost inexistant. Maybe the sound is not very strong but
> > the quality is very good.
> > I have the default echo canceller (no modification in the source files).
> >
> > Tested with a lot of SIP phones (ATA (G.711), X-Lite(GSM), SJ_phone(G.711),
> > Cisco 79x0) and one X100P card.
> >
> > BR,
> > Dan
> >
> > _______________________________________________
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> > Asterisk-Users at lists.digium.com
> > http://lists.digium.com/mailman/listinfo/asterisk-users
>
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