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Design and implementation of a small scale PABX system using DSP technology

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2 Author(s)
R. S. K. Wong ; Dept. of Electron. Eng., City Polytech. of Hong Kong, Kowloon, Hong Kong ; E. K. N. Yung

A flexible, low cost, and expandable digital private automatic branch exchange (PABX) system is developed. Digital switching and tone generation based on a digital signal processor are adopted. This reduces the overhead in assembling a small scale PABX system. The system can be expanded to handle more lines with the use of parallel processing techniques. A special software structure is developed to handle multiparty calls. The technique simplifies the programming of multiparty calls. Object-oriented design methodology is applied throughout the design of the call processing program. This results in a flexible program structure

Published in:

TENCON '92. ''Technology Enabling Tomorrow : Computers, Communications and Automation towards the 21st Century.' 1992 IEEE Region 10 International Conference.

Date of Conference:

11-13 Nov 1992