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Chapter 12 Troubleshooting
Audible signals
Continuous tone
Intermittent tone
(3 bleeps)
Rapid intermittent tone
90
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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