AudioCodes 420HD - Configuring Speaker Volume

Administrator's Manual 24. Configuring Volume Levels
Version 2.2.8 161 400HD Series IP Phones
24.4 Configuring Speaker Volume
The speaker volume can be configured using the Configuration File.
Note: It's strongly advisable not to change the default values.
 To configure speaker volume using the Configuration File:
• Use the table below as reference.
Table 24-4: Speaker Parameters
Parameter Description
Hands-free Gain Parameters
Note: Values are in decibels (dB)
 Decimal places: Use underscore instead of period (e.g.,
plus19_5db
).
[voip/audio/gain/NB/handsfree_digital_input_gain]
Digital input gain (in dB) – Narrow Band.
Default = 6.
The valid range is (-32) to 31 (dB), where -32
is mute.
[voip/audio/gain/NB/handsfree_digital_output_gain]
Digital output gain (in dB) – Narrow Band.
Default = 5.
The valid range is (-32) to 31 (dB), where -32
is mute.
[voip/audio/gain/WB/handsfree_digital_input_gain]
Digital input gain (in dB) – Wide Band.
Default = 6.
The valid range is (-32) to 31 (dB), where -32
is mute.
[voip/audio/gain/WB/handsfree_digital_output_gain]
Digital output gain (in dB) – Narrow Band.
Default = 5.
The valid range is (-32) to 31 (dB), where -32
is mute.
[voip/audio/gain/NB/handsfree_analog_output_gain]
Analog output gain (in dB) – Narrow Band.
Valid values: [0db], [minus1_5db],
[minus3db], [minus4_5db], [minus6db],
[minus7_5db], [minus9db],
[minus10_5db], [minus12db],
[minus13_5db], [minus15db],
[minus16_5db], [minus18db],
[minus19_5db], [minus21db],
[minus22_5db], [minus24db],
[minus25_5db], [minus27db],
[minus28_5db], [minus30db],
[minus31_5db], [minus33db],
[minus34_5db], [minus36db],
[minus37_5db], [minus39db],
[minus39db], [minus42db], [minus48db],
[minus54db], [MUTE]