| Answer | Crossword Clue |
|---|---|
| STANDSBY | Waits for a signal, perhaps |
| COUGH | Give a subtle signal, perhaps |
| REDIAL | Respond to a busy signal, perhaps |
| OMEN | Danger signal, perhaps |
| SOS | Stranded traveler's signal, perhaps |
| GONG | Signal to leave, perhaps |
| TONE | Signal to begin speaking, perhaps |
| TONE | Signal to start speaking, perhaps |
| WAVEGOODBYE | Signal to from the pier, perhaps |
