Aastra Telecom SIP 57I - Manual (Page 627)

Operational, Basic, and Advanced Parameters
41-001160-00, Release 2.1, Rev 04 A-125
Configuration Parameters
Appendix A Audio Transmit and Receive Gain Adjustment Settings
Parameter –
headset tx gain Configuration Files aastra.cfg, <mac>.cfg
Description This is the increased (+db) or decreased (-db) amount of signal
transmitted from the headset microphone to t he far-end party. The amount
of Tx gain in the IP phone firmware has been reduced to avoid side-tone
and echo on the local and far-end equipment. This parameter allows you
to adjust the Tx gain settings to best suit your comfort level and
deployment environment.
Format Integer
Default Value 0
Range -10 db to +10 db
Example headset tx gain: -5
Parameter –
headset sidetone gain Configuration Files aastra.cfg, <mac>.cfg
Description This is the is the increased (+db) or decreased (-db) amount of sidetone
signal from the headset microphone to the headset speaker. The amount
of sidetone gain in the IP phone firmware has been reduced to avoid
side-tone and echo on the local and far-end equipment. This parameter
allows you to adjust the sidetone gain settings to best suit your comfort
level and deployment environment.
Format Integer
Default Value 0
Range -10 db to +10 db
Example headset sidetone gain: -1