WAP Overview

What is WTA?

The Wireless Telephony API is an API and framework for accessing telephony and network services. It is intended mostly for use by network operators to control access to resources on the network from a mobile device, and to modify the way the device responds to events on the network.

Event responses are governed by an event table, and the WTA provides a means to interrogate and update this event table. Developers can use it to access a subset of common, non-privileged network services in a network-independent way. An example would be the ability to initiate a telephone call. The facilities are made available though libraries of common services, network specific services and public services. Only the public services are available to content that is not running within the WTA user agent.

Execution of privileged WTA content takes place in a separate user agent that is accessed via its own port under the WTLS protocol.