2N Helios IP Configuration Manual v2.8.1 - Manual (Page 40)

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2N TELEKOMUNIKACE a.s., www.2n.cz
®
List of Parameters
Master volume – set the master volume for the entire system. This setting
affects the volume of phone calls and all signalling tones.
Adaptive volume – enable the adaptive volume mode in which the speaker
volume is adjusted automatically depending on the noise level of the intercom
installation site.
Minimum volume – set the minimum volume in the adaptive mode to avoid
dropping below the acceptable limit.
Maximum volume – set the maximum volume in the adaptive mode to avoid
exceeding of the acceptable limit.
Tip
If the Speaker volume and Microphone sensitivity values exceed + 12 dB
if put together, the sound quality of the intercom-to-phone signal may
deteriorate in some cases due to acoustic feedback between the
microphone and the speaker depending on the intercom installation site
conditions (mounting method, device placement, environment qualities,
surrounding noise, etc.). If you hear interference in your handset during
intercom communication, set the
value to Low AEC Artefacts Reduction
or High as necessary.
Note
This setting is available in the adaptive mode supporting models only.