| 370 / | HD | MULTIPLEX COMMUNICATIONS | 
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| 464 |  | COMMUNICATION TECHNIQUES FOR INFORMATION CARRIED IN PLURAL CHANNELS {9} | 
| 465 | DF | .~> Adaptive {6} | 
| 474 | DF | .~> Assembly or disassembly of messages having address headers | 
| 475 | DF | .~> Address transmitted | 
| 476 | DF | .~> Byte assembly and formatting | 
| 477 | DF | .~> Transmission bandwidth conservation | 
| 478 | DF | .~> Combined time division and frequency division | 
| 479 | DF | .~> Combining or distributing information via code word channels | 
| 480 | DF | .~> Combining or distributing information via frequency channels {11} | 
| 498 | DF | .~> Combining or distributing information via time channels {17} |