X web hosting - Chapter 24 Accessibility 1249 Elements Description conference Connects
Chapter 24 Accessibility 1249 Elements Description conference Connects multiple sessions so that individuals can participate in a conference call. The targetSessionsattribute specifies the identification numbers of the sessions, and the termDigits attribute indicates the touch-tone keys that terminate the call. wait Waits for user input. The valueattribute specifies how long to wait. The termDigitsattribute indicates the touch-tone keys that terminate the waitelement. play Plays an audio file or pronounces a value that is stored as a number, date or amount of money and is indicated by the format attribute. The valueattribute contains the information (location of the audio file, number, date or amount of money) that corresponds to the formatattribute. The clearDigitsattribute specifies whether or not to delete the previously entered input. The termDigitsattribute indicates the touch-tone keys that terminate the audio file, etc. recordAudio Records an audio file and stores it at the URL specified by value. The formatattribute indicates the file extension of the audio clip. Other attributes include termDigits, clearDigits, max- Timeand maxSilence. Fig. 24.21 Fig. 24.2Fg. 24.FFi21ig. 24.21ig.CallXML elements. (Part 2 of 2.) 24.21 24.14 Other Accessibility Tools Many accessibility products are available to assist people with disabilities. One such technology, Microsoft s Active Accessibility , establishes a protocol by which an accessibility aid can retrieve information about an application s user interface in a consistent manner. Accessibility aids require information such as the name, location and layout of particular GUI elements within an application, so that the accessibility aid can render the information properly to the intended audience. Active Accessibility also enables software developers and accessibility-aid developers to design programs and products that are compatible with each other. Moreover, Active Accessibility is packaged in two components, enabling both programmers and individuals who use accessibility aids to employ the software. The Software Development Kit (SDK) component is intended for programmers: It includes testing tools, programmatic libraries and header files. The Redistribution Kit (RDK) component is intended for those who use accessibility aids: It installs a runtime component into the Microsoft operating system. Accessibility aids use the Active Accessibility runtime component to interact with and obtain information from any application software. For more information on Active Accessibility, visit: www.microsoft.com/enable/msaa Another important accessibility tool for individuals with visual impairments is the braille keyboard. In addition to providing keys labeled with the letters they represent, a braille keyboard also has the equivalent braille symbol printed on each key. Most often,
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