[AsteriskBrasil] Trixbox Eco.

[Paulo Sergio Simões]

    Bom dia pessoal tudo bem?

    Eu tenho aqui na empresa onde eu trabalho um pabx ip trixbox/Asterisk, e 
os ramais estão conectados a esse servidor através do software Xten versão 
1.1 3010n. Bom nesse servidor eu tenho um tronco com duas placas TDM410P com 
4 canais FXO cada,  ambas estão funcionando perfeitamente. Porem os usuários 
tem reclamado que as ligações estão com eco. Alguem sabe como eu posso 
resolver esse problema?
    Segue abaixo o conteudo do  meu arquivo chan_dahdi.conf.

Obs.: As ligações recebidas pelo tronco sip vono não apresenta o problema de 
eco.

[channels]
signalling = fxs_ks
usecallerid = yes
hidecallerid = no
callwaiting = yes
callwaitingcallerid = yes
threewaycalling = yes
transfer = yes
canpark = yes
cancallforward = yes
callreturn = yes
echocancel = yes
echocancelwhenbridged = yes
echotraining = 128
relaxdtmf = yes
rxgain = 10.5
txgain = 15.5
busydetect=yes
;busycount=6
answeronpolarityswitch=yes
hanguponpolarityswitch=yes
context = from-empresa
group=1
channel => 1-8

dahdi-channels.conf

; Autogenerated by /usr/sbin/dahdi_genconf on Mon Jun  6 14:19:06 2011
; If you edit this file and execute /usr/sbin/dahdi_genconf again,
; your manual changes will be LOST.
; Dahdi Channels Configurations (chan_dahdi.conf)
;
; This is not intended to be a complete chan_dahdi.conf. Rather, it is 
intended
; to be #include-d by /etc/chan_dahdi.conf that will include the global 
settings
;

; Span 1: WCTDM/0 "Wildcard TDM410P Board 1" (MASTER)
;;; line="1 WCTDM/0/0 FXSKS"
signalling=fxs_ks
callerid=asreceived
group=0
context=from-pstn
channel => 1
callerid=
group=
context=default

;;; line="2 WCTDM/0/1 FXSKS"
signalling=fxs_ks
callerid=asreceived
group=0
context=from-pstn
channel => 2
callerid=
group=
context=default

;;; line="3 WCTDM/0/2 FXSKS"
signalling=fxs_ks
callerid=asreceived
group=0
context=from-pstn
channel => 3
callerid=
group=
context=default

;;; line="4 WCTDM/0/3 FXSKS"
signalling=fxs_ks
callerid=asreceived
group=0
context=from-pstn

; Span 2: WCTDM/1 "Wildcard TDM410P Board 2"
;;; line="5 WCTDM/1/0 FXSKS"
signalling=fxs_ks
callerid=asreceived
group=0
context=from-pstn
channel => 5
callerid=
group=
context=default

;;; line="6 WCTDM/1/1 FXSKS"
signalling=fxs_ks
callerid=asreceived
group=0
context=from-pstn
channel => 6
callerid=
group=
context=default

;;; line="7 WCTDM/1/2 FXSKS"
signalling=fxs_ks
callerid=asreceived
group=0
context=from-pstn
channel => 7
callerid=
group=
context=default

;;; line="8 WCTDM/1/3 FXSKS"
signalling=fxs_ks
callerid=asreceived
group=0
context=from-pstn
channel => 8
callerid=
group=
context=default

Atenciosamente

Paulo Sergio Simões.