disables DTMF detection (don't need it)

git-svn-id: http://svn.berlios.de/svnroot/repos/sems/trunk@206 8eb893ce-cfd4-0310-b710-fb5ebe64c474

apps/announcement/Announcement.cpp

@@ -113,6 +113,8 @@ void AnnouncementDialog::onSessionStart(const AmSipReply& rep)
 }
 
 void AnnouncementDialog::startSession(){
+    setDtmfDetectionEnabled(false);
+
     if(wav_file.open(filename,AmAudioFile::Read))
 	throw string("AnnouncementDialog::onSessionStart: Cannot open file\n");