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Tele-Communication (Telecom) Terms Glossary and Dictionary
Audible Busy Tone
Audible busy tone is one of the audible tones in telephone system to signal a busy status. The "Precise" busy signal (Real Audio) / "Precise" busy signal (WAV): 480 and 620 Hz at -24 dBm0/frequency, is generated at telephone exchange, interrupted at 60 interruptions per minute (0.5 sec. on, 0.5 sec. off).
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