Noise and echo on outbound zap

hi

When I receive inbound call on Zap channels everything is perfect
but when I place calls through Zap channels I hear noise and echo sometimes…I have these options in my zapata.conf

;default
usecallerid=yes
callerid=asreceived
hidecallerid=no
callwaiting=no
callprogress = yes
threewaycalling=yes
transfer=no
rxgain=8.2
txgain=1
echocancel=yes
echocancelwhenbridged=yes
echotraining=yes

any idea?

You may want to dive into the IRQ’s that the card is using and insure the zaptel card is not sharing an IRQ. Google is your friend on this issue. Try googling Asterisk IRQ Conflict and similar. Also Digium tech support is usually helpful in resolving these type problems.