Fritzbox 1020 fone ata

Hi all,

I've been using a sipura 1001 ata and have just put a Fritzbox I've
had for sometime back online, It seems to be ok, but people I call
say it seems to have more echo, I cant anywhere in the settings to
increase echo cancellation. One other thing, it says in the manual
that the device allows three way calling and call waiting, but call
waiting does not seem t be active, I use sipgate for in-coming calls
and the same account on the sipura call waiting works, I cant see
anywhere in the Fritzbox config screens about call waiting, any ideas?

Bob