AVT MAGIC TH6 POTS Hardware & Software Manual page 49

O p e r a t i o n
FIG. 29 CONFIGURATION AGC
Via the button Set AGC on/off for all lines you can switch on respectively
switch off the AGC for all lines.
• An Expander tones down the caller signal automatically, if its level falls
below a certain threshold value. The aim is to completely filter out back-
ground noises of callers who are not currently speaking.
To activate the Expander select the desired line with your mouse. To
switch off the Expander select Off. To switch it on select On.
Via the button Set Expander on/off for all lines you can switch on respec-
tively switch off the Expander for all lines.
Automatic Gain Control Settings (AGC)/Expander
The correct functioning of the AGC can be optimised via several parameters.
• Threshold: The AGC does not start before the signal exceeds the threshold
value set here. The default setting is -45 dBFs.
• Level: The level set here corresponds to the average desired level. Please
consider sufficient head room. The default setting is -24 dBFs.
• Speed: Depending on the desired speed of the level adjustment (Slow,
Medium or Fast) you can adjust the setting of the AGC speed. The faster
the AGC must work the more noticeable are the inconsistencies. If the se-
lected speed is too slow, the caller signal is too low or too loud on average.
The default setting is Medium.
• With the use of the key Default Settings the AGC will be switched off and
the Expander will be activated.
Volume Control
Under Volume Control you can select the Default Value for the volume con-
trol within the range of -16 ... +16 dB.
Voice Disguise
With the Voice Disguise dropdown lists it is possible to adjust the style of the
Voice Disguise funtion. You can choose if the caller voice is pitched up or
pitched down and set the Ratio from 1 (low) to 4 (high). Voice Disguise can
be activated under Operation Settings
TER 5.6.4.1.1, Page 44).
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Mode & Audio Line (see CHAP-
S o f t w a r e
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