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Adjusting parameters for voice interfaces, Adjusting gains, Adjusting timing parameters – H3C Technologies H3C MSR 5600 User Manual

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18

Step Command

Remarks

1.

Enter system view.

system-view

N/A

2.

Enter voice interface view. subscriber-line line-number N/A

3.

Configure the threshold

parameters for DTMF
detection.

dtmf threshold analog index
value

By default, indexes 0 to 12 correspond to
1400, 458, -9, -9, -9, -9, -3, -12, -12, 30,

300, 3200, and 375, respectively.
This command is used by professional
personnel to adjust the device in the case

of DTMF detection failure. Usually, the

default value is adopted.

4.

Configure the DTMF
detection sensitivity level.

dtmf sensitivity-level { high |
low | medium

[ frequency-tolerance value ] }

By default, the DTMF detection sensitivity
is low.
This command applies to only FXS and

FXO interfaces

Adjusting parameters for voice interfaces

The configuration tasks in this section are all optional.

Adjusting gains

You can adjust gains to control the amount of volume in the input or output direction.

IMPORTANT:

Gain adjustment might lead to call failures. H3C recommends not adjusting the gain. If necessary, do it
under the guidance of technical personnel.

To adjust gains:

Step Command

Remarks

1.

Enter system view.

system-view

N/A

2.

Enter voice interface view.

subscriber-line line-number N/A

3.

Set the input gain.

receive gain value

The default is 0 dB.

4.

Set the output gain.

transmit gain value

The default is 0 dB.

Adjusting timing parameters

Step Command

Remarks

1.

Enter system view.

system-view

N/A

2.

Enter voice interface view.

subscriber-line line-number

N/A