Telephonic communications – Audio message storage – retrieval – or synthesis
Patent
1994-03-22
1998-03-03
Hong, Harry S.
Telephonic communications
Audio message storage, retrieval, or synthesis
379 71, 379 84, 379 88, 379 89, 379 9314, 379201, 395 279, 395 284, H04M 350, H04M 1100, H04M 342
Patent
active
057244065
ABSTRACT:
A flexible, object-oriented call processor is employed in a wide range of messaging environments (e.g. voice messaging, facsimile mail, notification and electronic mail) to provide any number and type of messaging service. Call processing procedures can be changed or adapted to provide a new or different messaging service without rewriting large amounts of software or redesigning the messaging system. Various call processing primitives are established to perform various call processing services in a messaging application, with each to primitive performing a single operation. Sets of parameters are also defined for different types of call processing services and different subscribers. A service state table corresponding to a sequence of logical states is set up to provide the requested call processing service. Once a requested call processing service is identified in response to a subscriber call, the call processor executes the service logic in the corresponding service state table. Each primitive is associated with a state in the service state table and is a source of events from that state. Execution of each logical state invokes one primitive for transitioning to the next state in the state table. Using such primitives and parameters, call processing services may be configured and readily adapted without knowledge of specific operating system or application software. A unique layered software architecture called the call processing stack executes call processing services based on corresponding records of configured primitives and parameters. Each layer of the architecture performs dedicated tasks without specific knowledge of the functions of the other layers.
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Ericsson Messaging Systems Inc.
Hong Harry S.
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