Java Programmer's Guide and Reference

Events

JTAPI events, which are used to communicate changes in the states of telephony objects, are sent to the application using Observers that are "registered" with Provider, Call, Terminal, and Address objects. These Observers are called ProviderObservers, CallObservers, TerminalObservers, and AddressObservers, respectively.

Following are important characteristics of events:

• There is a specific event type for each type of object (Provider, Call, Terminal, and Address).
• Events sent to the Observers represent the state of an object at the time the event was created; the events may not necessarily reflect the current state of the object.
• Events created by the IBM CallPath Enterprise Toolkit for Java do not support the META states. The META state is always META_UNKNOWN.

Note:

Some JTAPI events are not sent to CallObservers, TerminalObservers, and AddressObservers, because certain states are not supported in CallPath Enterprise's implementation of the IBM CallPath Enterprise Toolkit for Java. For more information about supported and unsupported states, see the tables in the States sections of Connection class, TerminalConnection class, and Agent class.

For more information, refer to the JavaSoft JTAPI 1.2 documentation.