370 / | HD | MULTIPLEX COMMUNICATIONS |
464 | DF | COMMUNICATION TECHNIQUES FOR INFORMATION CARRIED IN PLURAL CHANNELS {9} |
498 | DF | .~ Combining or distributing information via time channels {17} |
503 | DF | .~.~ Synchronizing {6} |
509 | DF | .~.~.~ Using synchronization information contained in a frame {3} |
510 | .~.~.~.~ Synchronization information is distributed over multiple frames {1} | |
511 | DF | .~.~.~.~.~> Using redundant synchronization words |