Hello, I try to make the pre-recorded voice conference announcements available in English as well as in German. From an old howto I found a few steps. I downloaded the German sound file and extracted it into freeswitch/sounds/de/at/ute/... then I made this adjustment to freeswitch/conf/lang/de/de.xml: <include> <language name="de" say-module="de" sound-prefix="$${sounds_dir}/de/at/ute" tts-engine="cepstral" tts-voice="david"> <phrases> <macros> <X-PRE-PROCESS cmd="include" data="demo/demo.xml"/> <!--voicemail_de_tts is purely implemented with tts, we need a files based implementation too --> <X-PRE-PROCESS cmd="include" data="vm/tts.xml"/> </macros> </phrases> </language> </include> and I made sure the de.xml is included in freeswitch.xml: <section name="languages" description="Language Management"> <X-PRE-PROCESS cmd="include" data="lang/de/*.xml"/> I was hoping that by setting the default_language parameter: <action application="set" data="default_language=de"/> before calling the conference application I could exchange the English annoucements with the German ones but this does not work. I read in the docs that the default language parameter is mainly for the say-module but which parameter then selects the language of the pre-recorded announcements? Is the German say-module even required when I dont want to use the say command at all but just want to playback the German soundfiles? In the logfile I see that the language is changed: 83d9e7fc-5212-11e4-a335-2d65638c2a61 Dialplan: sofia/external/04124124124@myprovider.de Action set(default_language=de) But when the conference starts it is using the English sound prefix: 2014-10-12 15:20:34.503660 [INFO] mod_conference.c:10305 using channel sound prefix: /opt/freeswitch/sounds/en/us/callie How can I change the voice conference annoucement language without simply replacing the audio files because I want to have the English announcements also available for English-only participants. Thanks for any help