User's Manual

Operational Features
41-001160-03, Rev 00, Releaes 2.4 5-357
Configuring Operational Features
Audio Transmit and Receive Gain Adjustments
The audio gain properties for the IP phone handset, headset, and speakerphone is
adjusted to reduce side-tone and echo on the local and far-end equipment. You can
adjust these settings from -10 db to +10 db to best suit your comfort level and
deployment environment by using the following parameters in the configuration
files:
• headset tx gain
• headset sidetone gain
• handset tx gain
• handset sidetone gain
• handsfree tx gain
• audio mode
The default setting for these parameters is 0 (zero).
The following table describes each parameter.
Note: Aastra Telecom recommends you leave the default of 0 (zero) as
the settings for these parameters.
Parameter Description
Headset tx gain The increased (+db) or decreased (-db) amount of signal transmitted from
the headset microphone to t he far-end party.
Headset sidetone gain The increased (+db) or decreased (-db) amount of sidetone signal from the
headset microphone to the headset speaker.
Handset tx gain The increased (+db) or decreased (-db) amount of signal transmitted from
the handset microphone to the far-end party.
Handset sidetone gain The increased (+db) or decreased (-db) amount of sidetone signal from the
handset microphone to the handset speaker.
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