At&t Bell Laboratories

American Telephone & Telegraph Co., At&t Bell Laboratories

Paul M Zislis

Wu-Hon F Leung

Todd Cartwright Morgan

Carlos Escolar

Wayne E Hyatt

Martin J Welt

Terris L Hansen

John F McDonald

Timothy A Wendt

George F MacLachlan

Hueichi R Liu

Gregory S Yates

Frank Kaplan

John D Palframan

Glenn R Babecki

Deborah D Kimminau

Hsin-Kuo Kan

Craig M Garnant

Peter J Matteo

Roger T Tran

A telecommunication and development system for the switching of voice and data under computer control in a customer programmable environment that allows real-time modification of communication services. The computer program controlling the system is written in a nonprocedural language that allows for the direct control of the telecommunication system on the basis of state definition, event definition, and action definition. Program scripts define a particular feature, and each script consists of a plurality of triples that automatically respond to the system state and signal information to execute the necessary actions to provide part of a feature to the telecommunication system. During provision of telecommunication services, a customer can add new features that not only add new operations to the system, but modify existing operations without interfering with the present operation of the system. This is possible since the nonprocedural language allows for the direct control of interaction between features and provides for the automatic execution of required operations during state transitions. In addition, the nonprocedural language allows a feature or script to control its own deactivation or activation. Also, the software development environment is based on a standard operating system allowing for ease of development. The above features allow a customer to program his or her own individual communication unit to provide desired features without affecting the operation of the telecommunication system or the features provided to other customers.

Customer programmable real-time system

A geographically distributed multiprocessor system is implemented by locating groups of processors at nodes which are interconnected by way of a transport network and which are connected by way of local lines to customer terminals and hosts. Each processor supports a plurality of processes which communicate with other processes in the same processor by way of internal links and with other processes in other processors by way of combinations of internal links and external communication links. Interface processes exchange data between the internal and external links. A process can initiate a call to any other process and define the communication parameters for exchanging data information by selecting the appropriate internal link and supplying the code defining the communication parameters to the selected internal link. The interface process relays the communication parameter code to the external link when the terminating end process is in the remote processor and processes the code when the terminating end process is the interface process.

Geographically distributed multiprocessor time-shared communication

Growing community of inventors

Holmdel, NJ, United States of America

Paul M Zislis