interopDtmfDetectionRiseTimeCriteria
MX-TELIF-MIB ·
.0.1775.1.50000.100.1.200
Object
column
r/w
Enumeration
Rise Time Criteria
Defines how the Rise Time criteria should be configured for
DTMF detection.
* CheckSr: Enable the Step Rise criteria and disable the
Confirm DTMF SNR criteria.
* ConfirmSnr: Enable the Confirm DTMF SNR criteria and
disable the Step Rise criteria.
The Step Rise criteria compares the current frame energy to
the high frequency power of the previous frame. If the
current frame energy is high enough, then it passes the test,
further validating the DTMF.
Disabling the Step Rise criteria may result in deteriorated
talk-off performance, but increases the detection of
malformed DTMF.
The Confirm DTMF SNR criteria is an additional
Signal-to-noise ratio test performed before a confirmed DTMF
report is sent to finally validate the DTMF.
Context
- MIB
- MX-TELIF-MIB
- OID
.0.1775.1.50000.100.1.200- Type
- column
- Access
- readwrite
- Status
- current
- Parent
- interopDtmfDetectionEntry
- Table
- interopDtmfDetectionTable
- Siblings
- 6
Syntax
Enumeration
Values & Constraints
Enumerated Values
100 | checkSr |
200 | confirmSnr |
Related Objects
Sibling Objects
| Object | Type | Syntax | OID |
|---|---|---|---|
| interopDtmfDetectionInterfaceId Interface Identifier
String that identifies an interface in other tables. | column | OctetString | .0.1775.1.50000.100.1.100 |
| interopDtmfDetectionPositiveTwist Malformed DTMF Detection Method
Defines the value for the Positive Twist DTMF detection
parameter.
When the high-group frequency of a DTMF is more po… | column | Unsigned32 | .0.1775.1.50000.100.1.300 |
| interopDtmfDetectionNegativeTwist Malformed DTMF Detection Method
Defines the value for the Negative Twist DTMF detection
parameter.
When the low-group frequency of a DTMF is more pow… | column | Unsigned32 | .0.1775.1.50000.100.1.350 |
| interopDtmfDetectionMaxPowerThreshold Maximum power for dual-tone detection
The average power of a DTMF must be below the value set in
this parameter to be no longer detected. Raising this value
increas… | column | Integer32 | .0.1775.1.50000.100.1.400 |
| interopDtmfDetectionMinPowerThreshold Minimum power for dual-tone detection
The average power of a DTMF must be above the value set in
this parameter for at least 30ms to be detected. Raising this
value… | column | Integer32 | .0.1775.1.50000.100.1.450 |
| interopDtmfDetectionBreakPowerThreshold Power threshold not to be exceeded when looking for break
detection
When the average power of a DTMF falls below the value set in
this parameter for at least 20ms, … | column | Integer32 | .0.1775.1.50000.100.1.500 |