Abstract: A communications system for general business environments that exploits knowledge of user state to provide advantages of efficiency and control for individual users and for the business. The communications system also provides particular advantages in environments where users have multiple communication devices and for communications of a business with external parties. In other aspects, the communication system provides features of application flexibility and system fault-tolerance with broad applicability to communication systems. The communication system includes a controller that receives requests for establishing communications when a user is in an appropriate state to receive communications and communicates state of the user to other users.

Abstract: A communications system for general business environments that exploits knowledge of user state to provide advantages of efficiency and control for individual users and for the business. The communications system also provides particular advantages in environments where users have multiple communication devices and for communications of a business with external parties. In other aspects, the communication system provides features of application flexibility and system fault-tolerance with broad applicability to communication systems.

Abstract: A communications system for general business environments that exploits knowledge of user state to provide advantages of efficiency and control for individual users and for the business. The communications system also provides particular advantages in environments where users have multiple communication devices and for communications of a business with external parties. In other aspects, the communication system provides features of application flexibility and system fault-tolerance with broad applicability to communication systems.