Audible signals
Continuous tone
Intermittent tone
(3 beeps)
Rapid intermittent
tone
3 seconds
5 seconds
(1 second on, 1
second off)
35 seconds
(0.7 seconds on,
0.3 seconds off)
Messages and Signals
Indicates the end of transmission,
reception, or copying.
Indicates incomplete transmission,
reception, or copying.
Indicates that the handset is off hook.
63