AASTRA 6700i series, 9143, 9480i, 9480i CT SIP Administrator Guide EN - Manual (Page 611)

5-334 41-001343-01 Rev 03, Release 3.2.2
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.
(continued)