Across
- 2. - Silent instructions
- 5. systems - online systems
- 6. phones - You're always on it
- 9. - Old school means of communication
- 11. conferencing - talking with video
Down
- 1. - Also used by a referee
- 3. flares - bright red lights in the sky
- 4. - A communication device
- 7. - every day post on line
- 8. - They beep when you're needed
- 10. hailers - really noisy to speak to a crowd