Data transmission unit having a plurality of ports

Details Data transmission unit having a plurality of ports Data transmission unit having a plurality of ports

1994-03-18

1995-04-04

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 31, 375222, H04L 500

Patent

active

054043514

ABSTRACT:
A data transmission unit includes a plurality of ports respectively connected to one of a plurality of terminals, a data transmission controller which is connected to a line and controls a data transmission, and a control part which is coupled between the data transmission controller and the ports and exchanges data between one of the ports and the data transmission controller in response to a call out command which is received from one of the terminals via the one of the ports.

REFERENCES:
patent: 4219700 (1980-08-01), Panizzon et al.
patent: 4578796 (1986-03-01), Charalambous et al.
patent: 4718082 (1988-01-01), Parker et al.
patent: 4893305 (1990-01-01), Fernandez et al.
patent: 4924492 (1990-05-01), Gitlin et al.

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