[Freeswitch-users] Prolems with DTMF

Hello, I have problems with sending DTMF. The freeswitch server recieves the digits from my telefon (SIP account) if I activate DTMF with: <action application="start_dtmf"/> in my dialplan. The line <--param name="dtmf-type" value="rfc2833"/--> in sofia.conf.xml is active, too. But than I have the problem that the other phone doesn't work. It is a VoATM device. The curious thing is that I see the digits in the logfile whiche were sent from the phone. In the first example I saw nothing. Does anybody have an idea??? Greetz