Common control for an electronic private branch exchange
- 1 July 1964
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Communication and Electronics
- Vol. 83 (73) , 321-329
- https://doi.org/10.1109/tcome.1964.6541231
Abstract
IN THE BELL System's No. 101 Electronic Switching System (ESS), also known as the electronic private branch exchange (PBX), a single centrally located unit has been designed to control the operation of a maximum of 32 remotely located switch units.1,2 The control unit will be located at a central office, while the switch units each will be located in a different PBX customer's office. A particular switch unit may serve up to 200 lines, while the control unit may accommodate up to 3,200 lines.Keywords
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