370 / | HD | MULTIPLEX COMMUNICATIONS |
351 | DF | PATHFINDING OR ROUTING {5} |
357 | DF | .~ Through a circuit switch {4} |
360 | DF | .~.~ Switching control {8} |
362 | .~.~.~ Bus switch {2} | |
363 | DF | .~.~.~.~> Having details of control storage arrangement |
364 | DF | .~.~.~.~> Having plural buses {1} |