[Asterisk-Users] Some echo?

[Robert Goodyear]

Robbie:

I fought with echocancel and various parameters for a long time with  
little luck. Then I uncommented AGGRESSIVE_SUPPRESSOR and DISABLED  
the Fax/tone detection in in zconfig.h since we're not faxing via  
Asterisk. Recompiled and all echo disappeared.

Hope that helps.
-Rob



-- 
Robert Goodyear
Brand Up LLC
http://www.brand-up.com



On Aug 4, 2005, at 2:10 PM, Robbie Hughes wrote:

> I have a 12 channel PRI with SNOM 190's and asterisk CVS from January.
> Most calls are fine, all incoming calls are fine, but I am getting  
> echo on a significant number of outgoing calls.
> The person on the other side hears a perfect call, but the SIPphone  
> side gets to hear themselves.
>
> It happens 100% of the time to some numbers (outgoing only), and  
> only sporadically to others.
>
> Has anyone ever experienced this?
> the RTT to the phones from the server is less than 10ms and it is a  
> 100mbit network with no traffic and cisco switches.
>
> zapata.conf attached below:
> Note: The commented out gain of +2 on outgoing seems to make no  
> difference to the effect.
>
>
> Has anyone got any ideas?
>
> ;
> ; Zapata telephony interface
> ;
> ; Configuration file
>
> [trunkgroups]
> group => 1,16
> [channels]
> spanmap => 1,1,1
> language=en
> context=from-pstn
> rxwink=300              ; Atlas seems to use long (250ms) winks
>
> usecallerid=yes
> hidecallerid=no
> callwaiting=yes
> usecallingpres=yes
> callwaitingcallerid=yes
> threewaycalling=yes
> transfer=yes
> cancallforward=yes
> callreturn=yes
> echocancel=yes
> echocancelwhenbridged=yes
> echotraining=800
> ;txgain=2.0
> txgain=0.0
> rxgain=0.0
>
> group=1
> callgroup=1
> pickupgroup=1
> immediate=no
> pridialplan=unknown
> overlapdial=yes
> signalling=pri_cpe
> switchtype=euroisdn
> channel=> 1-12
> faxdetect=both
>
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