| Platform SDK: Web Telephony Engine |
This section describes the software and hardware requirements of the WTE.
The WTE runs only on machines that have the Microsoft Windows® 2000 operating system installed.
The WTE uses a TTS engine to generate spoken words from the text in an application's HTML pages. It can also use a speech-recognition (SR) engine to receive spoken input from the caller. The WTE can use any TTS or SR engine that supports Microsoft SAPI technology.
Because Windows 2000 includes the Microsoft TTS Engine, you do not need to install a TTS engine in order to use the WTE. However, you need to install an SR engine to enable the WTE to use SR. You can install the Microsoft SR engine from the SAPI 4.0a Software Developer's Kit.
The preferred way to run a Web telephony application is with a voice board or voice modem. For more information, see Installing the Telephony Service Provider and Installing the Audio Driver. You can also run the Web telephony service by using the Internet Protocol (IP) device integral to the Windows 2000 operating system.
To verify that the voice modem or voice board is functioning properly, try calling the telephone line attached to the modem or board. Then, using any sample TAPI application, try to play an audio (wave) file. You should hear the file being played over the telephone if the modem or board is functioning properly.