Voice Parameters

Global parameter defining the pulse-code modulation (PCM) input (received) gain control level (in decibels).

You can also configure the feature per specific calls, using IP Profiles ('Input Gain' parameter) . For a detailed description of the parameter and for configuring the feature, see Configuring IP Profiles.

Note: If the feature is configured for a specific profile, the settings of the global parameter is ignored for calls associated with the profile.

Global parameter defining the voice gain control (in decibels). This defines the level of the transmitted signal.

You can also configure the feature per specific calls, using IP Profiles ('Voice Volume' parameter) . For a detailed description of the parameter and for configuring the feature, see Configuring IP Profiles.

Note: If the feature is configured for a specific profile, the settings of the global parameter is ignored for calls associated with the profile.

Determines the bit ordering of the G.726 voice payload format.

Note: To ensure high voice quality when using G.726, both communicating ends should use the same endianness format. Therefore, when the device communicates with a third-party entity that uses the G.726 voice coder and voice quality is poor, change the settings of the parameter (between Big Endian and Little Endian).

Global parameter enabling echo cancellation (i.e., echo from voice calls is removed).

You can also configure this feature per specific calls, using IP Profiles ('Echo Canceler' parameter) . For a detailed description of the parameter and for configuring the feature, see Configuring IP Profiles .

Note: If the feature is configured for a specific profile, the device ignores this global parameter for calls associated with the profile.

Enables the network Acoustic Echo Suppressor feature on SBC calls. This feature removes echoes and sends only the near-end’s desired speech signal to the network (i.e., to the far-end party).

Note: For the parameter to take effect, a device restart is required.

Defines the echo canceller type.

Defines the acoustic echo suppressor signals identified as echo attenuation intensity.

The valid range is 0 to 3. The default is 0.

Defines the acoustic echo suppressor maximum ratio between signal level and returned echo from the phone (in decibels).

The valid range is 0 to 60. The default is 10.

Defines the acoustic echo suppressor minimum reference delay (in 10-ms units).

The valid range is 0 to 40. The default is 0.

Defines the acoustic echo suppressor maximum reference delay (in 10-ms units).

The valid range is 0 to 40. The default is 40 (i.e., 40 x 10 = 400 ms).

Defines the four-wire to two-wire worst-case Hybrid loss, the ratio between the signal level sent to the hybrid and the echo level returning from the hybrid.

Global parameter enabling Non-Linear Processing (NLP) mode for echo cancellation.

Note: If the feature is configured for a specific Tel Profile, the settings of the global parameter is ignored for calls associated with the Tel Profile.

Enables the Aggressive NLP at the first 0.5 second of the call.

Note: For the parameter to take effect, a device restart is required.