Profile Management - DSP Pad

Jitter Eval
Period

Jitter evaluation period. Time period in which to decide when to periodically evaluate playout occupancy in milliseconds. This parameter determines the rate at which the jitter buffer is adapted. This value should be set in a range that covers somewhere between 0.5 seconds to 2 seconds although you can set it to numbers outside this range. If this number is too small the jitter buffer algorithm may tend to discard samples too aggressively causing small losses of audio. If the number is too large the excess delay built up in the jitter buffer will remain for a long time before it can be removed. The default setting of 1 second is a reasonable compromise. Must be 10-300000, default is 1000.

Jitter Min Occ
Thsh

Jitter buffer occupancy threshold (in milliseconds). The occupancy below which playout time is advanced if this occupancy has existed for the jitterEvalPeriod. This value is the target occupancy of the buffer assuming the actual network jitter is small enough to reach this number. The occupancy of the jitter buffer over time represents the delay added before audio is played out to the PSTN. This value is used to prevent excess delay from building up in the jitter buffer if the delay is not needed. If the network jitter is small enough the occupancy will gradually be brought down to this level or possibly lower. If you know the expected jitter in your network then you should set this threshold equal to or slightly larger than this jitter in order to have delay. If the actual jitter is higher then some samples may (infrequently) be discarded, depending on the statistics of the signal. If the actual jitter is somewhat smaller then you may have some accumulated delay (less than or equal to this value) in the jitter buffer. This represents the trade-off between maintaining delay and discarding samples. Must be 2- 200 (covering a delay of 2 to 200 milliseconds), default is 20 (milliseconds). Setting this number to 200 will disable jitter buffer adaptation.

RTP DTMF Relay

This integer specifies the RTP payload type to use for DTMF Relay during compressed calls. Must be 96-127, default is 100. When running RFC 2833 with H.323 or SIP signaling, H.323 disallows 0-95.

Sid Min Time

time between silence packets. This integer specifies the time between SID packets, in milliseconds. This ensures that SID packets will not be sent too frequently when the background noise is changing, but instead some amount of compression will still occur. Must be 50-300000, default is 200 (milliseconds).

Sid Max Time

This integer specifies the maximum time between SID packets, in milliseconds. If SID HEARTBEAT in the Packet Service Profile is enabled, the SID packets will be sent during silence intervals lasting longer than the value specified by this parameter. These packets can be used to keep a level of bearer traffic flowing for RTCP calculation purposes. This value must exceed sid MinT i me (below). Must be 50-300000, default is 2000 (or 2 seconds).

Sid Hangover Time

This integer specifies the time after voice is detected inactive before sending a SID packet, in milliseconds. Must be 80-2560, default is 100 (milliseconds).

Sid Min Noise
Floor

This (positive) integer specifies the noise level below which level any noise is considered to be silence (in dBm0s). Must be -62dBm0 to -24dBm0, default is 60 (or-60 dBm0).

Sid Max Noise
Floor

This (positive) integer specifies the maximum noise level above which level any noise is considered to be speech (in dBm0s). Must be -62dBm0 to -24dBm0, default is 48 (or -48 dBm0).

Comfort Energy

This (positive) integer specifies the initial estimate to be used for generating comfort noise when the CODEC in the Packet Service Profile is G711 or G711SS. For G711, when no modem has been detected, it represents the level of comfort noise to generate to fill in the audio if packet losses occur; it is played until the first packet is received. For G711SS, it represents the level of comfort noise to generate if no SID is received, whenever there are gaps without packets (due to either packet losses or silence periods). Must be - 90dBm0 to -35dBm0, default is 56 (or -56 dBm0).

Universal Compression Threshold

This positive integer is a percentage that indicates the usage threshold for universal compression resources in the node. When this usage level or threshold is reached, an event (and possibly a trap) will be generated. Must be 1-100, default is 90.

Universal Compression Threshold State

Specifies whether a trap will be generated when universal compression resources are reduced beyond a threshold value.

The options are:

• Disabled
  
• Enabled (default)

Playout Timeseries Period

Specifies the recording interval size (in milliseconds) used by the SBC 5000 series when monitoring RTP playout buffer quality; used only when an RTP stream is terminated. This parameter applies only to the RTP playout buffer in the DSP. It does not apply to the RTP monitoring function in the network processor. This value must be greater than or equal to 10000 (10 seconds) and less than or equal to 240000 (240 seconds). The default is 20000 (20 seconds).

Playout Timeseries Threshold0

Specifies the playout loss time series threshold (in milliseconds) used by the SBC 5000 series when quantifying packet loss as applied to the playoutTimeseriesPeriod. Loss
durations less than or equal to Threshold0 are considered Good. Loss durations  greater than Threshold0 and less than Threshold1 are considered Acceptable. The default is 0 (0.0 seconds, or 0 percent of the playoutTimeseriesPeriod). This  parameter is applicable for all channel instances.

Playout Timeseries Thershold1

Specifies the playout loss time series threshold (in milliseconds) used by the SBC 5000 series when quantifying packet loss as applied to the playoutTimeseriesPeriod. Loss
durations greater than Threshold0 and less than Threshold1 are considered  Acceptable. Loss durations greater than Threshold1 and less than Threshold2 are
considered Poor. The default is 200 (0.2 seconds, or 1 percent of the  playoutTimeseriesPeriod). This parameter is applicable for all channel instances.

Playout Timeseries Threshold2

Specifies the playout loss time series threshold (in milliseconds) used by the SBC 5000 series when quantifying packet loss as applied to the playoutTimeseriesPeriod. Loss
durations greater than Threshold1 and less than Threshold2 are considered Poor. Loss durations greater than Threshold2 are considered Unacceptable. The default is
600 (0.6 seconds, or 3 percent of the playoutTimeseriesPeriod). This parameter is applicable for all channel instances.

Tone Threshold

Percentage Threshold crossing value for tone resources. When this threshold is reached an event will be generated if toneThresholdState is enabled.

Tone Threshold
State

State of Tone Threshold Event. An event will be generated only if state is enabled.

Audio Tx
During2833

Specifies the state of Audio Transmit During 2833. Parameter that allows the user to inhibit the transmission of audio packets during the period lasting from the start of a transmitted RFC4733 event to the end of the transmitted RFC4733 event.

The options are:

• Disabled
  
• Enabled (default)