Adding TTS Languages

Last Updated : Mar 20, 2025 |

The Voicemail Pro application can use Text-to-speech (TTS). It does this using either locally installed TTS files or, for subscription IP Office systems, TTS provide by Google services.

  • Google TTS does not require any installation, just configuration of the Speech UI setting in the IP Office system configuration. When configured, Google TTS overrides locally installed TTS.

  • The process below covers the installation of local TTS files. The TTS languages are downloadable as 3 separate ISO images. You need to upload and install the additional languages on the server or servers running Voicemail Pro.

Warning:
  • TTS files from pre-12.1 releases are not compatible with R12.1.

Checking the TTS Languages Installed

  1. Access the server's web control/platform view menus.

  2. Select Updates.

  3. In the list of Services, each TTS language is shown with the prefix TTS.

Downloading the TTS Languages

You can download the TTS files from Avaya Support:

  1. Select the IP Office release and locate the release with links for the TTS ISO files.

  2. Download the ISO image or images containing the languages required:

    • Disk 1: English, French, German, Italian, Spanish.

    • Disk 2: Danish, Dutch, Finnish, Greek, Norwegian, Portuguese, Swedish.

    • Disk 3: Chinese, Polish, Russian.

  3. Extract the individual RPM installation files from the ISO files by treating them as zipped archives.

Adding a New Language

Warning:
  • This process causes the voicemail service to restart, ending all calls it is handling.

  1. Access the server's web control/platform view menus.

  2. Select Settings | General.

    1. In the Software Repositories section, click on the Browse button for Application.

    2. Browse to and select the RPM file for the required language and click OK.

    3. Repeat for any other TTS languages you require.

  3. Click Add.

  4. Select Updates.

    1. In the Services section, locate the newly added TTS language.

    2. Click Install.

    3. When the installation is complete, repeat for any other TTS language file you added.