Configuration
Local Voice
Local Voice Configuration Screen
Voice configuration values must match the other AVA-E units with which it communicates. As with all
voice telecommunication networks, there is no set rule for the various gain values: They are installation
specific and are usually compromises to obtain the highest quality voice with adequate levels and without
excessive echo.
Fields
Voice Rate
Digitization rate for the audio to digital conversion. The local and remote AVA-E voice rate setting
must be identical.
Preamp Gain
Set the audio preamp gain level. The default depends on the voice input.
Input Gain (-42 to +20 dB)
Set the audio input gain level. The actual audio input gain is the sum of Preamp Gain and Input Gain.
The default depends upon the voice input.
Output Gain (-42 to +20 dB)
Set the audio output gain level. The default depends upon the voice input.
Jitter Buffer
The Jitter Buffer is a delay added to the audio sample to accommodate delays in the network. The
default value is 140 ms. The value entered is converted to an integer multiple of 20 ms.
Voice Input
Select the AVA-E audio input. Available options are FXO, FXS, MIC-PTT, and E&M.
Some settings
require internal jumper changes
.
FXS Options
Options are
Normal
and
Always off-hook
. When the FXS input is selected, this option forces the input
off-hook continuously. Default is
Normal
, where off-hook is controlled by the connected telephone
device.
E&M
When the E&M input is selected, this option enables the M input signal to control audio transmission
when set to
M-control
. Default is
Always ON
, where E&M is always transmitting audio.
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