US PATENT SUBCLASS 370 / 419
.~.~ Input or output circuit, per se (i.e., line interface)

Current as of: June, 1999
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370 /   HD   MULTIPLEX COMMUNICATIONS

351  DF  PATHFINDING OR ROUTING {5}
389  DF  .~ Switching a message which includes an address header {11}
419.~.~ Input or output circuit, per se (i.e., line interface) {1}
420  DF  .~.~.~> For connecting plural subscribers to a network (i.e., network termination) {1}

DEFINITION

Classification: 370/419

Input or output circuit, per se (i.e., line interface):

(under subclass 389) Subject matter having means or techniques for controlling how information is handled at an input or output of a switch.