Telephonic communications – Multi-line or key substation system with selective switching...
Patent
1985-02-04
1987-03-17
Dwyer, James L.
Telephonic communications
Multi-line or key substation system with selective switching...
379327, 339198R, H04M 100
Patent
active
046513400
ABSTRACT:
The entrance terminal and network interface connects between the building entrance cable on the telephone facility side and the telephone customer's equipment. A modular, space saving arrangement of single line and multi-line network interfaces provides flexible and readily adaptible system for connecting selected incoming lines to either one or several multiple line users and single line users. By this arrangement, a convenient disconnect point between telephone facilities and all customers is provided. The arrangement greatly reduces costs, saves space and simplifies installation and trouble-shooting.
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Dwyer James L.
Michigan Bell Telephone Company
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