Example 6: Order an item from a catalog (menu item 3)

In the previous examples you created an application which received an incoming call and presented a menu to the caller. In this example you will add functionality to the third menu item so that the caller can order an item from a catalog. The example introduces the technique of creating separate classes and using them in the main application. This makes your main application less cluttered and allows easy reuse of functionality. The example also introduces the AudioNumber class and the use of arrays to play media sequences.