A protocol used in conjunction with the Wireless Application Protocol (WAP) to allow a phone number to be linked to a web page. It enables mobile web applications to utilize the phone’s native features and functions, such as making voice calls, accessing call logs, and sending text messages.
Functionality
WTAI (Wireless Telephony Applications Interface) allows web pages to perform actions like dialing numbers, sending messages, or accessing the phonebook. For example, a WAP site could include a link that, when clicked, would initiate a call to a specified number.
Components
WTAI comprises a set of standard functions categorized into libraries. These libraries cover various telephony services, such as call control, phonebook access, and network services.
Usage
To use WTAI in a mobile application, developers write scripts that invoke WTAI commands. These scripts are typically integrated with WML (Wireless Markup Language) pages and can be activated by user actions such as clicking a link or pressing a button.
Compatibility and Decline
WTAI was designed for use in the WAP environment, but its actual implementation and support could vary between mobile devices and operating systems. With the advent of advanced smartphones and the evolution of mobile internet technologies, the use of WTAI has significantly declined. Modern smartphones use more sophisticated platforms and APIs for accessing telephony functions. However, WTAI played an important role in the early stages of mobile application development by providing a bridge between web applications and mobile telephony services.