Aastra Telecom 57I User Manual

Operational, Basic, and Advanced Parameters

41-001160-00, Release 2.1, Rev 04

A-127

Configuration Parameters

Parameter – 
handsfree tx gain

aastra.cfg, <mac>.cfg

This is the increased (+db) or decreased (-db) amount of signal 
transmitted from the base microphone to the 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.

Note: The example below increases the speakerphone mic transmit gain 
by 10 db.

Integer

0

-10 db to +10 db

handsfree tx gain: 10

Parameter – 
audio mode

Options->Set Audio

aastra.cfg, <mac>.cfg

Allows you to configure how the "handsfree" key on the IP phone operates.

Integer

0

Speaker - Calls can be made or received using the handset or 

handsfree speakerphone and can be switched between the two 
modes by pressing the d /fkey. When on speaker, you can return to 
using the handset by placing the handset on the cradle and 
picking it up again.

Headset - Calls can be made or received using the headset. Calls 

can be switched between the headset and handset by pressing the d 
/fkey.

Speaker/headset - Incoming calls are sent to the speakerphone . By 

pressing the d /f key, you can switch between the handsfree 
speakerphone, the headset, and the handset.

Headset/speaker - Incoming calls are sent to the headset. By 

pressing the d /fkey, you can switch between the headset, the 
handsfree speakerphone, and the handset.

audio mode: 2