In message of Thu, 3 Apr 2008, Marc Zirnheld writes
>D'apres David Floyd <david@floyd.org.uk>,
>dans le forum uk.telecom.voip...
>
>> Apparently the person I call hears me fine and I can hear them OK, but I
>> get an echo form my own voice and sometimes a bit of breaking up when
>> both parties cross talk.
>
>Did you adjust the line impedance settings ? Both for FXO and FXS ?
>
>

Yes, but if you read other posts on this subject in the past as I have
now done, this is a known problem with making PSTN calls on a SPA3K

David