View source for Automatic Gain Control (AGC)

{{AEIS}}
{{cons}}
Zenitel IP devices supports '''Automatic Gain Control (AGC)'''. The purpose of the AGC feature ..............


Default active???

Not config in TCIV+?



=== IC-Edge mode===
Log in to the [[Edge Controller]], and navigate to '''Edge Controller''' > '''System Configuration''' > '''Call and Audio''', and enable "'''AGC'''":

[[File:AVC Enable Edge.png|thumb|left|700px|Enabling AGC in an IC-Edge system]]
<br style="clear:both;" />

<br>

=== SIP and ICX-AlphaCom mode ===
Log in to the Zenitel IP device.
* SIP mode: Navigate to '''SIP Configuration''' > '''Audio Settings''', and enable "'''Automatic Gain Control (AGC)'''"
* ICX-AlphaCom mode: Navigate to '''Advanced ICX-AlphaCom''' > '''Audio Settings''', and enable "'''Automatic Gain Control (AGC)'''"

[[File:AGC Basic.png|thumb|left|700px|Enabling AGC on a device in SIP or ICX-AlphaCom mode]]
<br style="clear:both;" />

<br>

Some additional settings are available in '''Advanced Configuration'''.

Go to '''Audio Settings'''. Under '''Audio signal processing''' enable '''AVC Advanced Settings''':

[[File:AVC Settings.PNG|thumb|left|700px|"AVC Advanced" settings]]
<br style="clear:both;" />


*'''Enable AVC''': Check the box to enable automatic volume control. Volume is adjusted according to the ambient noise level. The AVC will perform better if the loudspeaker volume is set to a fairly low level, as this will give the AVC a more dynamic range for adjustments. Note that the AVC adjustment is disabled while the speaker is playing audio. Adjustments are made in silent periods (min. 100 ms silence required).
*'''Debug in Display''': When enabled the station shows current volume level in the OLED display (applicable to TCIS-4, TCIx-5 and TCIx-6 stations)
*'''AVC Advanced Settings''': Check to open for more advanced AVC settings
** '''Lower Threshold''': Threshold level for the AVC to start working. Valid range: 30-80 dBA. Default is 55 dBA.
** '''Upper Threshold''': Threshold level for the AVC to stop working. Valid range: 60-120 dBA. Default is 100 dBA.
** '''Attack Rate''': How quickly the AVC adjusts gain on raising ambient audio level. Range: 1..100 dBA/sec. Default is 10 dBA/sec.
** '''Decay Rate''': How quickly the AVC adjusts gain on falling ambient audio level. Range: 1..100 dBA/sec. Default is 10 dBA/sec.
** '''Hysteresis''': Hysteresis around previous set ambient audio level before doing adjustments. Range: 1..10 dBA/sec. Default is 3 dBA.
** '''Far-End Lockout Time''': When playing audio in AVC zone (far-end-signal) AVC adjustments are locked. When there is a pause in the far-end-signal, adjustment commences after this lockout-time. Range: 1..100. Resolution is 100 ms. Default is "1" (= 100 ms).

[[Category: ICX-AlphaCom features]]
[[Category: SIP intercom - Configuration]]
[[Category: IC-EDGE Configuration]]
[[Category: AlphaCom features]]