silenceSuppressionType
ZHONE-COM-VOICE-DSP-MIB ·
.1.3.6.1.4.1.5504.4.3.3.1.7
Object
scalar
r/w
Enumeration
This data informs a voice DSP what type of silence
suppression algorithm to use on a channel. Silence
suppression is used to suppress packet generation during
periods of silence of a voice call.
The SID (silence descriptor) frame is generated at the
start of a silence period, or periodically, and it is
used to characterize the power level of the background
noise during silence period on the encode side of the
voice path. The SID frame is then passed to the decode
side through the packet encoding medium (AAL2 or RTP).
The decode side then generates comfort noise at an
equivalent power level dictated by the SID frame
values.
Valid values for the variable are:
* silSupOff - silence suppression is off.
* silSupOnSidOn - send an SID frame at a specified
constant interval (e.g. 100ms).
Following values are not supported:
* silSupOnSidOff - discontinue transmission during
silence periods and no SID frame is sent.
* silSupOnSidConst - send an initial SID frame and then
discontinue transmission.
Silence suppression is not supported on MALC.
The default value is silSupOff.
Context
- MIB
- ZHONE-COM-VOICE-DSP-MIB
- OID
.1.3.6.1.4.1.5504.4.3.3.1.7- Type
- scalar
- Access
- readwrite
- Status
- current
- Parent
- voiceDspDefaultConfiguration
- Siblings
- 7
Syntax
Enumeration
Values & Constraints
Enumerated Values
1 | silSupOff |
2 | silSupOnSidOff |
3 | silSupOnSidOn |
4 | silSupOnSidConst |
Related Objects
Sibling Objects
| Object | Type | Syntax | OID |
|---|---|---|---|
| redundancyOverSubscriptionType voice DSP redundancy over-subscription model.
It is important to know the concept of active versus
standby resources in order to understand how over-
subscription work… | scalar | Enumeration | .1.3.6.1.4.1.5504.4.3.3.1.1 |
| jitterBufferType Voice DSP channel jitter buffer defaults.
There are two types of jitter algorithms: static and
dynamic. Dynamic allows the jitter buffer to grow and
shrink as inter-ar… | scalar | Enumeration | .1.3.6.1.4.1.5504.4.3.3.1.2 |
| jitterBufferSize Voice DSP jitter buffer size in milliseconds. More
specifically, it refers to the amount of memory usage
that can store certain milliseconds of voice.
There are two typ… | scalar | milliseconds Unsigned32 | .1.3.6.1.4.1.5504.4.3.3.1.3 |
| interArrvJitThreshold The inter-arrival jitter threshold per channel used as
a trigger value in milliseconds to generate a trap
when its value is passed.
If this value is 0, the threshold mo… | scalar | milliseconds Unsigned32 | .1.3.6.1.4.1.5504.4.3.3.1.4 |
| pktsLostThreshold Voice DSP channel packets lost per minute threshold.
A trap will be generated when this value is passed.
If this value is 0, the threshold mointoring is
disabled for pa… | scalar | Unsigned32 | .1.3.6.1.4.1.5504.4.3.3.1.5 |
| echoCancellationType This data informs which echo cancellation algorithm to
be used by default: 165 or 168 for a particular
channel. The numbers 165 and 168 are the ITU
designations for the algorithm… | scalar | Enumeration | .1.3.6.1.4.1.5504.4.3.3.1.6 |
| echoReturnLoss The amount of loss between the transmitted signal
and the reflected echo back from the hybrid where
the 4-to-2 wire conversion takes place.
For MALC: 0dB and 6dB. 6dB i… | scalar | Enumeration | .1.3.6.1.4.1.5504.4.3.3.1.8 |