isd-t360sa ETC-unknow, isd-t360sa Datasheet - Page 106

• Manufacturer Part Number: isd-t360sa
• Manufacturer: ETC-unknow

ISD-T360SA
2-70
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Index
Busy and Dial Tone:
TONE_DET_OFF_ENERGY_
THRESHOLD
Busy Tone:
BUSY_DET_MIN_TIME
Busy Tone:
BUSY_DET_MIN_ON_TIME
Busy Tone:
BUSY_DET_MAX_ON_TIME
Busy Tone:
BUSY_DET_MIN_OFF_TIME
Busy Tone:
BUSY_DET_MAX_OFF_TIME
Busy Tone:
BUSY_DET_VERIFY_COUNT
Busy Tone:
BUSY_DET_TONE_TYPE
Busy Tone:
BUSY_DET_DIFF_THRESHOLD
Parameter Name
Table 2-7: TUNABLE PARAMETERS: Tone Detection
Maximum energy level at which busy and dial tones are detected
as OFF (after 700Hz filtering). If you divide (multiply) the value by 2
you get about 3 dB decrease (increase) in the threshold.
The mapping between energy level and the parameter value is the
same as for TONE_DET_ON_ENERGY_THRESHOLD
Legal values: 0 to 65535.
Minimum time period for busy detection, in 10 ms units. The
accuracy of the constant is ±10 ms.
Legal values: 0 to 65535.
Minimum period considered as On period for busy tone detection.
Note that for weak signals:
(–30 dB and below) the maximum value is 12 (i.e., 120 ms
minimum detection time).
Unit: 10 ms. Accuracy is ±20 ms.
Legal values: 10 to 1000.
Maximum period considered as On for busy-tone detection. Unit:
10 ms. Accuracy is ±20 ms.
Legal values: 10 to 1000.
Minimum period considered as Off for busy-tone detection. Unit:
10 ms. Accuracy is ±20 ms.
Legal values: 5 to 1000.
Maximum period considered as On for busy-tone detection. Unit:
10 ms. Accuracy is ±20 ms.
Legal values: 5 to 1000.
Number of On/Off cadences that must be detected prior to
reporting busy-tone presence.
Legal values: 9 to 127.
Specifies the type of busy tone to detect:
1 —Two cadences
2 —Three cadences
3 —Both two and three cadences
The maximum allowed difference between two compared On or
Off periods. Unit: 10 ms.
Legal values: 0 to 255.
Description
Voice Solutions in Silicon™
2—SOFTWARE
110
600
10
170
5
130
9
1
9
Default