| 379 / | HD | TELEPHONIC COMMUNICATIONS |
| FOR 112 | DF | TELEPHONE LINE OR SYSTEM COMBINED WITH DIVERSE ELECTRICAL SYSTEM OR SIGNALLING (E.G., COMPOSITE) (379/90) {8} |
| FOR 128 | DF | .~ Remote indication over telephone line (e.g., telemetry) (379/106) {1} |
| FOR 129 | | .~.~ Meter reading (379/107) |