Node apparatus for communication network having multi-conjunctio

Details Node apparatus for communication network having multi-conjunctio Node apparatus for communication network having multi-conjunctio

1988-03-18

1989-03-21

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 94, H04J 326

Patent

active

048150703

ABSTRACT:
A node apparatus is used in a communication network having a multi-conjunction architecture. The communication network has a plurality of transmission paths each coupling one node apparatus to another node apparatus or a terminal device. The node apparatus generally comprises an input port, an output port, and a control part for controlling the coupling of input channels of the input port to output channels of the output port. The control part disconnects and releases a fixed communication path when no signal is present at the input and output channels of the input and output ports for a first time period after the communication path is fixed, and initializes the node apparatus when no signal is present at the input and output channels of the input and output ports for a second time period before the communication path is fixed. In the initial state, each input channel other than input channels included in the fixed communication path is coupled to all of the output channels other than an output channel having a corresponding channel number.

REFERENCES:
patent: 4276643 (1981-01-01), Laprie et al.
patent: 4380063 (1983-04-01), Janson et al.
patent: 4393381 (1983-07-01), Seiden
patent: 4399531 (1983-08-01), Grande et al.
patent: 4443875 (1984-04-01), Blausten
patent: 4482996 (1984-11-01), Wilson et al.
patent: 4602364 (1986-07-01), Herman et al.

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