Supported Speech Language Packs
Microsoft Unified Communications Managed API (UCMA) 3.0 Workflow applications require installation of Microsoft Speech language pack(s) to use Speech Recognition and text-to speech (TTS). Microsoft Speech Recognition and TTS language packs are available in different languages. By default, the UCMA installer only installs support for DTMF, and en-US speech recognition and TTS engines. Additional languages should be downloaded from the Microsoft Download Center.