| 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 | ![]() | .~.~.~ Having both input and output queuing {1} |
| 414 | DF | .~.~.~.~> Contention resolution for output |