Modify DSP TC Attributes(MOD DSPTC)

Function

A configuration command that modifies some parameters related to the DSP TC in the configuration database. In this command, the system uniquely identifies the DSP TC data record according to the combination of the following key parameters.

Subrack No.

Slot No.

DSP number

This command supports the batch modification function: If you enter the subrack No., slot No., DSP number, and the attributes to be modified, you can modify the TC attributes of a DSP on the specified GDPUC board. If you just enter the subrack No., slot No., and the attributes to be modified, you can modify the TC attributes of all the DSPs on the specified GDPUC/GDPUX board.

Note

None

Parameters

ID Name Description
SRN Subrack No.

Meaning:Subrack No.

Value range:0~11

Explanation:This parameter specifies the number of a subrack.

The BSC6000 can be configured with up to four remote subracks or eight local subracks (four GTCSs and four GMPSs/GEPSs).

Only one local main subrack and one remote main subrack can be configured.

Subrack 0 is the local main subrack and cannot be deleted.

If the BSC should be configured with the GBAM, the GBAM is installed in subrack 12. Deleting subrack 12 is prohibited.

Default value:None

SN Slot No.

Meaning:Slot No.

Value range:0~27

Explanation:This parameter specifies the number of the slot in which the sub-board is located.

Default value:None

DSPNO DSP No.

Meaning:DSP No.

Value range:0~21

Explanation:This parameter specifies the number of the DSP in the DPU.

There is a one-to-one mapping between the DSP TC object and the DSP. The DSP object manages the communication between the DSP chip and the CPU, and the DSP TC object processes services, such as communication status query and DSP log recording. If the DSP TC object is not configured, the DSP chip can run normally but cannot process services.

Default value:None

G711_MODE G711 Mode

Meaning:G711 Mode

Value range:A0,U1

Explanation:This parameter specifies the coding compression mode. Multiple transmission modes such as E1/T1 can be used on the A interface. The code stream in different transmission modes uses different coding compression modes. The value of this parameter indicates the coding compression mode.

Default value:None

IDLE_CODE Idle Code

Meaning:Idle Code

Value range:0~255

Explanation:This parameter specifies the idle code on the A interface.

Default value:None

MUTE_DETECT Mute Detect

Meaning:Mute Detect

Value range:CLOSE(Close),OPEN(Open)

Explanation:This parameter specifies whether to enable the one-way audio check function.

Default value:None

MUTE_TIMER Mute Timer

Meaning:Mute Timer

Value range:0~255

Explanation:This parameter specifies the duration of the one-way audio check.

If this parameter is set to Open, the BSC instructs the GDPUC to check whether one-way audio occurs after a call is set up. The value of this parameter indicates the maximum duration for the GDPUC to perform one-way audio check.

Default value:None

NOISE_DETECT Noise Detect

Meaning:Noise Detect

Value range:CLOSE(Close),OPEN(Open)

Explanation:This parameter specifies whether to enable the noise detection function.

Default value:None

TFO_SWITCH TFO Switch

Meaning:TFO Switch

Value range:CLOSE(Close),OPEN(Open)

Explanation:This parameter specifies whether to enable the Tandem Free Operation (TFO) function.

If the voice quality of an ongoing MS-to-MS call is bad, the TFO function can be enabled to improve end-to-end voice quality.

The TFO function cannot be used to improve the voice quality of an MS-to-PSTN call.

Default value:None

AECSWITCH AEC Switch

Meaning:AEC Switch

Value range:CLOSE(Close),OPEN(Open)

Explanation: This parameter specifies whether the AEC function is enabled.

Default value:None

AECNLPGATE AEC Nlp Gate[dBm0]

Meaning:AEC Nlp Gate[dBm0]

Value range:-60~-35,0

Explanation: This parameter specifies the threshold to enable the NLP. To reduce the echo, if the input level on the near end is lower than the value of this parameter when the far end is speaking, comfortable noise is generated to substitute the voice of the near end. In this way, low voices may be cut.

Default value:None

AECPUREDELAY AEC Path Delay[ms]

Meaning:AEC Path Delay[ms]

Value range:0~1000

Explanation: This parameter specifies the delay brought about by the transmission link. It is used in satellite transmission and should be set according to the actual conditions.

Default value:None

AECTAIL AEC Echo Path Delay[ms]

Meaning:AEC Echo Path Delay[ms]

Value range:0~600

Explanation: If the echo can be traced within the time specified by this parameter, the echo judgment and control is performed on the basis of the traced echo. Otherwise, the echo judgment and control is performed based on the default value.

Default value:None

AECERL AEC Echo Return Loss[dB]

Meaning:AEC Echo Return Loss[dB]

Value range:0~60

Explanation: This parameter specifies the default return loss. If the echo cannot be traced, the echo judgment and control is performed based on the value of this parameter.

Default value:None

AECSNRGATES AEC SNR Gate[dB]

Meaning:AEC SNR Gate[dB]

Value range:0~15

Explanation: This parameter specifies the signal-to-noise ratio threshold on the near end. If the signal-to-noise ratio on the near end is lower than the value of this parameter, the echo control is not performed.

Default value:None

ALCSWITH ALC Switch

Meaning:ALC Switch

Value range:CLOSE(Close),OPEN(Open)

Explanation: This parameter specifies whether the ALC function is enabled.

Default value:None

ALCADAPTMODE ALC Mode

Meaning:ALC Mode

Value range:FIXEDLEVEL(Fixed Level Mode),ADAPTIVE(Adaptive Mode),FIXEDGAIN(Fixed Gain Mode)

Explanation: This parameter specifies the ALC mode.

Default value:None

ALCMAXLEV ALC Max Target Level[dBm0]

Meaning:ALC Max Target Level[dBm0]

Value range:-23~-4

Explanation: This parameter specifies the maximum target level in adaptive ALC mode.

Default value:None

ALCMINLEV ALC Min Target Level[dBm0]

Meaning:ALC Min Target Level[dBm0]

Value range:-23~-4

Explanation: This parameter specifies the minimum target level in adaptive ALC mode.

Default value:None

ALCFIXLEV ALC Fix Target Level[dBm0]

Meaning:ALC Fix Target Level[dBm0]

Value range:-23~-4

Explanation: This parameter specifies the target level in fixed level ALC mode.

Default value:None

ALCFIXGAIN ALC Fix Gain[dB]

Meaning:ALC Fix Gain[dB]

Value range:-12~12

Explanation: This parameter specifies the gain in fixed gain ALC mode.

Default value:None

ALCMAXGAIN ALC Max Gain[dB]

Meaning:ALC Max Gain[dB]

Value range:3~12

Explanation: This parameter specifies the maximum gain to the input signal. This parameter is valid only in fixed level mode and adaptive mode. If this parameter is set too small, the target level may be difficult to achieve.

Default value:None

ANRSWITH ANR Switch

Meaning:ANR Switch

Value range:CLOSE(Close),OPEN(Open)

Explanation: This parameter specifies whether the ANR function is enabled.

Default value:None

ANRMODE ANR Mode

Meaning:ANR Mode

Value range:MODE0(Mode 0),MODE1(Mode 1),MODE2(Mode 2)

Explanation: This parameter specifies the ANR mode.

Default value:None

ANRDELTANOISE ANR Noise Target Level[dB]

Meaning:ANR Noise Target Level[dB]

Value range:-64~0

Explanation: This parameter specifies the target noise level.

Default value:None

ANRQM ANR Noise Reduction Level[dB]

Meaning:ANR Noise Reduction Level[dB]

Value range:-32~0

Explanation: This parameter specifies the noise suppression level in the ANR. A higher absolute value of this parameter indicates a higher noise suppression level.

Default value:None

ANCSWITH ANC Switch

Meaning:ANC Switch

Value range:CLOSE(Close),OPEN(Open)

Explanation: This parameter specifies whether the ANC function is enabled.

Default value:None

ANCSNRGATERS ANC Target SNR[dB]

Meaning:ANC Target SNR[dB]

Value range:10~20

Explanation: In the ANC algorithm, the input signal on the far end is adjusted to ensure that the ratio of the far-end signal to the near-end noise is higher than the value of this parameter.

Default value:None

ANCMAXGAIN ANC Max Gain[dB]

Meaning:ANC Max Gain[dB]

Value range:3~30

Explanation: This parameter specifies the maximum gain to the far end signal. If this parameter is set too small, the target ratio of the far-end signal to the near-end noise may be difficult to achieve.

Default value:None

NOISELIMITTHRESHOLD Noise Limit Threshold

Meaning:Noise Limit Threshold

Value range:0~19

Explanation: This parameter specifies the noise amplitude limiting threshold when the uplink DTX is enabled. The value 0 indicates that the background noise amplitude limiting function is disabled. A smaller value indicates a lower background noise amplitude.

Default value:None

FORCELIMITTIME Force Limit Time[s]

Meaning:Force Limit Time[s]

Value range:0~30

Explanation: This parameter specifies the forced amplitude limiting period at the beginning of the call.

Default value:None

TFOOPTSWITCH TFO Optimize Switch

Meaning:TFO Optimize Switch

Value range:CLOSE(Close),OPEN(Open)

Explanation:Acoustic Echo Cancellation (AEC) is an important function for improving voice quality. If the proportion of frames with AEC functions in the total frames exceeds the AEC Detect Time, then the AEC function should be disabled. This helps to improve the user satisfaction on voice quality.

Default value:None

AECDETECTTIME AEC Detect Time

Meaning:AEC Detect Time

Value range:1~10

Explanation:This parameter specifies the time for detecting the working status of AEC.

Default value:None

AECDETECTTHRESHOLD AEC Detect Threshold

Meaning:AEC Detect Threshold

Value range:10~100

Explanation:This parameter specifies the threshold for detecting the working status of AEC.

Default value:None

EPLCSWITCH EPLC Switch

Meaning:EPLC Switch

Value range:CLOSE(Close),OPEN(Open)

Explanation:Switch for self check and recovery of the memory.

Default value:None

FAULTDETECTSWITCH Fault Detect Switch

Meaning:Fault Detect Switch

Value range:CLOSE(Close),OPEN(Open)

Explanation:The Enhanced Packet Loss Concealment (EPLC) function helps improve the voice quality.

Default value:None

RESERVEPARA1 Reserved Para 1

Meaning:Reserved Para 1

Value range:0~4294967295

Explanation:none

Default value:None

RESERVEPARA2 Reserved Para 2

Meaning:Reserved Para 2

Value range:0~4294967295

Explanation:none

Default value:None

RESERVEPARA3 Reserved Para 3

Meaning:Reserved Para 3

Value range:0~4294967295

Explanation:none

Default value:None

RESERVEPARA4 Reserved Para 4

Meaning:Reserved Para 4

Value range:0~4294967295

Explanation:none

Default value:None

RESERVEPARA5 Reserved Para 5

Meaning:Reserved Para 5

Value range:0~4294967295

Explanation:none

Default value:None

Example

1. Set the A/U configuration of DSP 0 of GDPUC board at slot 0 in subrack 1.
MOD DSPTC: SRN=1, SN=0, DspNo=0, G711_Mode=A0;
2. Set the A/U configuration for all the DSPs of the GDPUC board that is on slot 0 of subrack 1 to U1:
MOD DSPTC: SRN=1, SN=0, G711_Mode=U1;

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