Janet Kay Douglas

US Patent:

6363424, Mar 26, 2002

Filed:

Sep 1, 1999

Appl. No.:

09/388393

Inventors:

Janet Beeler Douglas - Naperville IL
Warren Alan Montgomery - DeKalb IL
Kumar Venkata Vemuri - Naperville IL

Assignee:

Lucent Technologies, Inc. - Murray Hill NJ

International Classification:

G06F 1300

US Classification:

709224, 709227

Abstract:

In an Internet protocol (IP)-based multimedia system having a voice over packet infrastructure call handling involves the execution of a call processing program that controls state transitions in a finite state machine termed the âcall model. â These transitions are representative of the events that occur during the lifetime of the call and result in the execution of pre-defined actions. In order to provide high level Intelligent Network (IN) capabilities to IP end-point subscribers, a call model layer implements the IN call model, but is closely integrated with the IP-based, multimedia call model that runs within the base platform. The integration employs a precisely defined state-level map between states in the IN call model and the corresponding states in the base call model. The IN call model layer is thus able to support access to IN components to permit the existing base of IN services to be easily accessed and to permit the base layer to support client-level interaction and event handling. A call state information is shared between the two layers to enable them to operate in synchrony.