| 379 / | HD | TELEPHONIC COMMUNICATIONS |
| 441 | DF | TERMINAL ACCESSORY OR AUXILIARY EQUIPMENT {9} |
| 447 | ![]() | .~ Attachable to terminal housing {3} |
| 448 | DF | .~.~> Hookswitch operator |
| 449 | DF | .~.~> Handset holder (e.g., shoulder rest) |
| 450 | DF | .~.~> Clips onto terminal structure |