Problems with analog hardware and xen virtualization

hi folks,

i have a issue with my setup.

i recently install xen in my server, and create several
domu, but when i start a domU or i am working in it
my fxs in my tdm400p have noise. when i am calling
from iax or sip extension trough the fxo there not noise, it
just with the fxs port and domU working at same time.

i check for electrical problems and all its good.

i have the following setup:

software:
centos 5.2
kernel 2.6.18-53.1.19.el5xen
asterisk 1.4.22-rc5
zaptel-1.4.11
xen-3.0.3-64.el5_2.3

installed domUs: centos 5.2 kernel 2.6.18-92.1.17.el5xen

hardware:
tdm400p 1 fxs 1 fxo

FXS /etc/asterisk/zapata.conf -extract-

[channels]
context=from-pstn
signalling=fxs_ks
rxwink=300
usecallerid=yes
hidecallerid=no
callwaiting=yes
usecallingpres=yes
callwaitingcallerid=yes
threewaycalling=yes
transfer=yes
canpark=yes
cancallforward=yes
callreturn=yes
echocancel=yes
echocancelwhenbridged=no
faxdetect=incoming
echotraining=800
rxgain=0.0
txgain=0.0
callgroup=1
pickupgroup=1


thanks

Open Systems - innovate, create, enjoy


jesuslee at gmail dot com