On Premise Software Help Resource : Help TopicsText to Speech Options
Here you can choose the text-to-speech engine used for computer generated voices.
TTS Plug-In
>In order to pronounce a contact’s name over the phone, you must have VoicentText-to-Speech Plug-In, which enables Voicent Gateway to use a TTS engine/voice for phone calls. It is included in the the product so you can test it.
Please note that the TTS Plug-In does not include a TTS engine/voice. Microsoft Windows have built-in TTS engine/voices, for example, on Windows Vista, it has a voice called “Microsoft Anna”, and on Windows XP, “Microsoft Mary” and “Microsoft Sam”.
You might find that the pronunciation of the name and notes are hard to understand over the phone, especially on Windows XP when Mary and Sam’s voice is used. You could try to get other commercial TTS engines online. For details, please see: http://voicent.com/text-to-speech-telephony.php
You can hear the computer generated voice by selecting Operation > Save TTS audio to file.
Pre-recorded Voice Selection
Used for date, number, time, and phone number, the gateway has both male and female voices.