I still hear a slight echo of my voice when I talk with somone out the PSTN. The voice on the other end sounds very choppy and a little distorted. When I talk to other people within our office, the sound is perfect.Can some help?<br> <br> We are all using:<br> <br> Polycom 501 <--> asterisk <--> PSTN<br> <br> zapata.conf:<br> [channels]<br> group = 1<br> language=en<br> context=incoming<br> signalling=fxs_ks<br> switchtype=national<br> usecallerid=yes<br> hidecallerid=no<br> callwaiting=yes<br> musiconhold=default<br> usecallingpres=yes<br> callwaitingcallerid=yes<br> threewaycalling=yes<br> transfer=yes<br> canpark=yes<br> cancallforward=yes<br> callreturn=yes<br> echocancel=yes<br> echotraining=yes<br> echocancelwhenbridged=yes<br> rxgain=10.0<br> txgain=10.0<br> channel => 1-4<br> <br> <br> <br> <p>
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