Time division multiplexer with automatic call function

Multiplex communications – Wide area network – Packet switching

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Details

370 84, H04J 317

Patent

active

048993379

ABSTRACT:
A multiplexer for trunking, over at least one high-speed trunk line on a multiplex basis under statistical time-division multiplexing control, transmission data on low-speed lines connected to a plurality of data terminal units, operates normally to transmit multiplexed data over leased high-speed trunk lines and, when a data buffer which temporarily stores data on the low-speed lines has its contents in excess of a certain level, operates by adding a public line as a high-speed trunking line to the leased high-speed trunk line for implementing the multiplexed data trunking.

REFERENCES:
patent: 4477898 (1984-10-01), Cholat-Namy
patent: 4528660 (1985-07-01), Gentry
patent: 4768188 (1988-08-01), Barnhart et al.

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