A "text to speech engine" converts text into audio-files . You need this funtion to:
·send text message, which are read out to the called participant.
·listen to E-Mails
·to create greetings for the answering machine
For this function "TTS-Engine" from Microsoft for the languages German, English, Italian and Dutch are installed. However, any other "MS Speech" based TTS engine can also be installed and used.