To simplify the process of using a modem, Windows CE provides an implementation of the Microsoft Telephony API (TAPI).
Using TAPI functions included with Windows CE, you can create an application that enables a user to make a phone call by choosing a phone number or choosing an image. A user can set up a conference call, or connect using a modem, to a remote host computer to download data at predetermined times.
TAPI supports outbound calls and address translation services. Windows CE does not support inbound calls. TAPI also supports installable service providers.
The following sections discuss TAPI for Windows CE, the telephony programming model, and TAPI code examples. Also discussed is use of the TAPI in Windows CE–based applications used with a modem.