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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