Copyright 2010-2017 Obihai Technology, Inc.
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Dial tone is generated as a mixture of two frequency components:
350 Hz at -18 dBm and 440 Hz at -18 dBm
The expiration time is infinite, and tone active time is infinite.
Busy Tone:
BUSY, "480-18,620-18;10;(.5+.5)"
Busy tone is generated as a mixture of two frequency components:
480 Hz at -18 dBm and 620 Hz at -18 dBm
The expiration time is exactly 10 seconds. It has only one cadence segment, which has tone active 0.5 second and tone
inactive 0.5 second.
Prompt Tone:
PROMPT, "480-16;10"
Prompt tone is generated from a single frequency component:
480 Hz at -16 dBm. The expiration time is exactly 10 seconds. It has only one cadence segment, which has tone infinite
active time.
SIT Tone:
SIT_1, "985-16,1428-16,1777-16;20;(1/.380+0,2/.380+0,4/.380+0,0/0+4)"
Special information tone (SIT) is generated from a set of frequency components:
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1st frequency: 985 Hz at -16 dBm
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2nd frequency: 1428 Hz at -16 dBm
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3rd frequency: 1777 Hz at -16 dBm
The expiration time is exactly 20 seconds. It has only one cadence segment, which includes 4 on-off sections. The
segment has infinite repeating time:
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The 1st on-off section: generated by the 1st frequency component, and it has 0.38 tone second active time
and 0 inactive time.
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The 2nd on-off section: generated by the 2nd frequency component, and it has 0.38 tone second active time
and 0 inactive time.
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The 3rd on-off section: generated by the 3rd frequency component, and it has 0.38 tone second active time
and 0 inactive time.
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The 4th on-off section: only generate silence since no frequency component is specified. It has tone 0 second
active time and 4 seconds inactive time.
Stutter Tone:
STUTTER, "350-18,440-18;10;.6(.1+.1);(/)"
Stutter dial tone is generated from a mixture of two frequency components:
350 Hz at -18 dBm and 440 Hz at -18 dBm. The expiration time is exact
10 seconds. It has two cadence segments.
