Multiplex communications – Wide area network – Packet switching
Patent
1984-03-30
1986-03-11
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
179 98, 1791752R, 361428, H04J 314, H04M 322
Patent
active
045758409
ABSTRACT:
An access device is provided for a main distribution frame of a telephone system. The access device, which may be structured as a set of access blocks, is positioned between surge protection modules and their corresponding vertical input terminal block so as to make electrical contact with the subscriber telephone line without interruption of the array of harnesses which couple together the various terminal blocks of the main distribution frame. A printed circuit contained within each of the access blocks comprises conductors which contact feed-through terminals of the access block, the conductor coupling these terminals to multiplexers which provide for the selective coupling of messages from the subscriber lines to the subscriber line of a message receiving station.
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patent: 4131934 (1978-12-01), Becker et al.
patent: 4176257 (1979-11-01), DeLuca
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patent: 4273966 (1981-06-01), Briggs et al.
patent: 4288838 (1981-09-01), Van Der Vegte et al.
patent: 4331839 (1982-05-01), Baumbach
Hargrave Franklin
Linke, Jr. Edward J.
Middleton Francisco A.
ITT Corporation
Olms Douglas W.
Van Der Sluys Peter C.
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