| Answer | Crossword Clue |
|---|---|
| MOTORIST | Call box user |
| KITTY | Litter box user |
| CAT | Litter box user |
| callbacks | A security feature used by systems accessed by telephone, in which a remote user must log on using a previously registered phone number, to which the system then places a return call |
| ROADSIDE | Call-box locale |
| BATTERUP | Call after which someone fills a box |
