System 75: Communications and Control Architecture
- 1 January 1985
- journal article
- website
- Published by Institute of Electrical and Electronics Engineers (IEEE) in AT&T Technical Journal
- Vol. 64 (1) , 153-173
- https://doi.org/10.1002/j.1538-7305.1985.tb00426.x
Abstract
The System 75 office communication system uses a unique communications and control architecture that provides great flexibility and a minimum of overhead for small configurations while growing smoothly to larger line sizes. A distributed communication network provides 64 kb/s connectivity for both voice and data. It consists of a pair of time division multiplexed buses and intelligent port circuits. Flexible conferencing and gain adjustment are supported as an integral part of the network. The control complex supports an operating-system-based software structure.Keywords
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