Establishing telecommunications call paths between clustered swi

Details Establishing telecommunications call paths between clustered swi Establishing telecommunications call paths between clustered swi

1992-11-06

1994-11-15

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 60, H04L 1256

Patent

active

053655249

ABSTRACT:
In accordance with the principles of this invention, Pulse Code Modulation (PCM) signal streams are converted into Asynchronous Transfer Mode (ATM) cells for switching and transmission across a telecommunications network. Each cell carries one PCM sample of up to 48 different voice connections, the voice connections selected from the PCM data streams because they have a common destination. The cells are transmitted over ATM virtual circuits, each circuit transmitting one cell every 125 .mu.s. Advantageously, ATM transmission systems interface with PCM systems without adding appreciable delay and without requiring additional buffering. Advantageously, new voice paths can be established most of the time by using available slots in the cells of existing virtual paths. This application relates to the use of the principles of this invention for implementing a large switching system or a cluster of highly interconnected smaller systems.

REFERENCES:
patent: 5093827 (1992-03-01), Franklin et al.
patent: 5189410 (1993-02-01), Kosugi et al.
patent: 5204882 (1993-04-01), Chao et al.
patent: 5214651 (1993-05-01), Baydar et al.
patent: 5233606 (1993-08-01), Pashan et al.
R. Hazell, editor, "Broadband Technology", Electrical Communication, vol. 65, No. 1, (Telecom 91) , Oct. 1991, pp. 12-18-Broadband Technology, pp. 19-21-Evolution of Alcatel Exchanges.
K. Y. Eng et al., "A Framework for a National Broadband (ATM/B-ISDN) Network", International Conference on Communication ICC'90, vol. 2, Apr. 1990, Atlanta, pp. 515-520.

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