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Messages and Signals
Audible signals
Continuous tone
Intermittent tone
(3 beeps)
Rapid intermittent
tone
74
3 seconds
5 seconds
(1 second on, 1
second off)
35 seconds
(0.7 seconds on,
0.3 seconds off)
Indicates the end of transmission,
reception, or copying.
Indicates incomplete transmission,
reception, or copying.
Indicates that the handset is off hook.
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