The Gain Control settings are used to define Recording Gain and Playback Gain drop down lists.
They contain the allowed gain values, which can be set by the administrator.
The Gain Control page consists of the Transmit Gain and
Receive Gain drop down lists for each line. They contain the allowed gain values,
which can be set by the administrator for every line.
For FXS lines, the Transmit Gain defines the phone speaker volume and Receive Gain
defines the microphone volume.
For FXO trunks, the Transmit Gain defines the
level of voice transmitted by QX200 to the PSTN network and
Receive Gain defines the volume of voice received by QX200 from the PSTN
network.
For Voice Mail, the Recording Gain defines the volume of the phone microphone upon playing voice mails or system messages and the Playback Gain
defines the phone speaker volume upon playing voice mails or system messages.
For Audio Lines, the Transmit Gain (Line Out) defines the level of voice transmitted from QX200 to the Audio Line Out port.
Receive Gain (Line In) defines the volume of voice received by QX200 from the Audio Line In port.
Note: If gain control is configured
incorrectly, DTMF digits may not be recognized properly. The gain control
settings depend solely on the board location (country) and the phone type.
The Restore Default Gains button reloads the default values.