Multiplex communications – Wide area network – Packet switching
Patent
1981-01-05
1983-08-30
Swann, III, Glen R.
Multiplex communications
Wide area network
Packet switching
370120, H04L 514
Patent
active
044020767
ABSTRACT:
A system comprises two kinds of multiplex stations connected by two wire lines and distinguished by two different predetermined frequency basebands each of which consists of predetermined frequencies for dividing the multiplex channels. The multiplex stations are provided with conversion means in their respective transmit paths so as to convert their own basebands to the different ones of the other multiplex stations connected and vice-versa. The system preferably provides generalized units in both kinds of multiplex stations and is simpler than a known one which uses the same basebands in all multiplex stations and converts the baseband before and after transmitting.
REFERENCES:
patent: 2328450 (1943-08-01), Hagen
patent: 4236244 (1980-11-01), Strehl
Bayly Engineering Limited
Swann III Glen R.
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