Clue: Hum on the line
We have 1 answer for the clue Hum on the line. See the results below.
Possible Answers:
Related Clues:
- It may follow a click
- Indication of service availability
- Sound after a hang-up
- "It's okay to call now" signal
- Receiver sound
- Signal to place a call
- Caller's need
- Cell phone's lack
- "Ready" signal of a kind
- Landline signal
Last Seen In:
- King Syndicate - Eugene Sheffer - April 16, 2004
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