[Asterisk-Users] echo problem + choppy sound

[McQuiggan, Mark xt46480]

The best way to set gains would be to use ztmonitor (located in
/usr/src/zaptel).  Make a call and note your channel number.  Run
/usr/src/zaptel/ztmonitor <channel number> -v  from a telnet session.  check
to see if your levels are too high or too low and adjust your zapata.conf
accordingly.  I ended up setting my TX to -4.5 to cut out the choppiness.
 
Regards,
 
Mark.


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From: asterisk-users-bounces at lists.digium.com
[mailto:pollux1234567890 at yahoo.com] 
Sent: Tuesday, March 14, 2006 12:11 PM
To: asterisk-users at lists.digium.com
Subject: Re: [Asterisk-Users] echo problem + choppy sound


I have done this but I still get choppy sound and echo on some calls

thanks

Giovanni Miano <giomiano at gmail.com> wrote: 

Of course,
Echo is 2 types: electric and ambiental.

If u gain rx o tx more than you need, its return in recive and gen echo

Try to decrase value, try to set 0 or .. in samecase -1 -2...


2006/3/13, sdgesa gaeharth <pollux1234567890 at yahoo.com
<mailto:pollux1234567890 at yahoo.com> >: 

Can you explain why? 


Giovanni Miano <giomiano at gmail.com  <mailto:giomiano at gmail.com> > wrote:

rxgain=10.0
txgain=10.0

 ????

Maybe this is a problem



2006/3/13, sdgesa gaeharth <  <mailto:pollux1234567890 at yahoo.com>
pollux1234567890 at yahoo.com >: 

I still hear a slight echo of my voice when I talk with somone out the PSTN.
The voice on the other end sounds very choppy and a little distorted. When I
talk to other people within our office, the sound is perfect.Can some help?

We are all using:

Polycom 501 <--> asterisk <--> PSTN

zapata.conf:
[channels]
group = 1
language=en
context=incoming
signalling=fxs_ks 
switchtype=national
usecallerid=yes
hidecallerid=no
callwaiting=yes
musiconhold=default
usecallingpres=yes
callwaitingcallerid=yes
threewaycalling=yes 
transfer=yes
canpark=yes 
cancallforward=yes
callreturn=yes
echocancel=yes
echotraining=yes
echocancelwhenbridged=yes
rxgain=10.0
txgain=10.0
channel => 1-4




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