US PATENT SUBCLASS 370 / 430
.~ FDM switching

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

351  DF  PATHFINDING OR ROUTING {5}
430.~ FDM switching

DEFINITION

Classification: 370/430

FDM switching:

(under subclass 351) Subject matter wherein signals to be switched are frequency division multiplexed in the transmission medium having a frequency spectrum divided into segments and respective information channels are transmitted in different segments.