| 370 / | HD | MULTIPLEX COMMUNICATIONS | 
| 351 | DF | PATHFINDING OR ROUTING {5} | 
| 389 | DF | .~ Switching a message which includes an address header {11} | 
| 412 | DF | .~.~ Queuing arrangement {3} | 
| 413 | DF | .~.~.~ Having both input and output queuing {1} | 
| 414 |  | .~.~.~.~ Contention resolution for output |