Avaya Digital Mobility System Configuration Guide download pdf (Page 106)

106 Chapter 7 Configuring the DMC

N0000623 01.3

Suppression control

Using the Suppression Control command makes the handsets function better in different noisy

environments.

Note that this setting is only available through the DMC OAM program. The Master handset

cannot provide this information.

The purpose of the suppressor is to suppress an echo which is not fully suppressed by the built-in

echo canceller. The suppressor makes the connection effectively simplex, forcing the speakers not

to interrupt one another.

Caution: Only use the Suppression Control command if performance of the built-in echo

canceller is insufficient. Only tune and test the parameters with great care to minimize undesirable

side effects such as distorted or fluctuating audio.

1 On the Settings menu, click Suppression Control.

A Suppression Control dialog box appears, showing the current suppression control values.

Note: You can also click Read to display the current suppression control values in the DMC.

Figure 67 Suppression control through the DMC OAM

Suppression with 6 dB decreases the volume by 50 per cent.

Suppression with 9 dB decreases the volume by 65 per cent.

Suppression with 12 dB decreases the volume by 75 per cent.

Suppression with 15 dB decreases the volume by 95 per cent.

Table 15 Example of suppression control values

Suppression Activate Level Suppression Used in

-26 dB 6 dB/9 dB/12 dB/15 dB/ Office

-20 dB 6 dB/9 dB/12 dB/15 dB/ Light noisy environment

-17 dB 6 dB/9 dB/12 dB/15 dB/ Heavy noisy environment

-8 dB 6 dB/9 dB/12 dB/15 dB/ Extreme noisy environment

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Avaya Digital Mobility System Configuration Guide Page 106