Multiplex communications – Wide area network – Packet switching
Patent
1980-06-02
1982-06-15
Brigance, Gerald L.
Multiplex communications
Wide area network
Packet switching
370 32, 370108, H04M 300
Patent
active
043354556
ABSTRACT:
A method and apparatus for the four-wire type transmission of digital message signals between a superordinate system, such as a digital exchange, and a subordinate system, such as a digital subscriber station, along a two-wire transmission line. A regenerator is inserted at a given point in the transmission line which switches the message signal blocks repeatedly and alternately transmitted between the superordinate system and the subordinate system onto a four-wire line within the regenerator. The message signal blocks transmitted from the subordinate system to the superordinate system are separately delayed within the regenerator by a delay time period sufficient to avoid overlap with the time periods during which the message signal blocks transmitted by the superordinate system are received at the regenerator.
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patent: 4063041 (1977-12-01), Vollnhals
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Brigance Gerald L.
Siemens Aktiengesellschaft
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