Reuse of services between different domains using state machine mapping techniques
US6363424B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 1, 1999 |
| Grant date | Mar 26, 2002 |
| Priority date | — |
| Expiry date | Sep 1, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q3/0054
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
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 “call model.” 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. State transitions made by one call model finite state machine (FSM) are thus re…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.