US PATENT SUBCLASS 370 / 227
.~.~.~ Using a spare channel

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

216  DF  FAULT RECOVERY {3}
225  DF  .~ Bypass an inoperative channel {2}
226  DF  .~.~ In a repeater system {1}
227.~.~.~ Using a spare channel

DEFINITION

Classification: 370/227

Using a spare channel:

(under subclass 226) Subject matter wherein the multiplex repeater system has a primary and a backup or protection line, and the backup line is activated to route information data when the primary channel is malfunctioning.