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Messages and Signals
Audible signals
Continuous tone | 3 seconds | Indicates the end of transmission, | - |
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| reception, or copying. |
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| Trouble9. | shooting | ||
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Intermittent tone | 5 seconds | Indicates incomplete transmission, | |||
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(3 beeps) | (1 second on, 1 | reception, or copying. |
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| second off) |
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Rapid intermittent | 35 seconds | Indicates that the handset is off hook. |
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tone | (0.7 seconds on, |
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| 0.3 seconds off) |
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