3-92 Customer Programming Software (CPS)
6866588D21-D Chapter 3 - MTP850 Ex/MTP810 Ex Product Information Manual March 2009
22.3.1 Mic Gain
The following screen shot shows the features available on the terminal.
This sub menu is used to set the microphone volume used when the terminal is operated with a
Inductive Loop, Inductive Patch or PHF.
22.3.2 Speech Volume
This sub menu is used to set the terminal speech volume.
22.3.3 Howling Suppression
This sub menu is used to set the Howling Speaker and Microphone gain reduction.
22.3.4 AGC
Enables selection of the parameters for the AGC (Automatic Gain Control) Enable Register.
Select one of the following parameters:
• No receiving and no attenuation.
• External Microphone 12 dB attenuator - When this feature is enabled, an Automatic Gain
Control (AGC) is implemented in the microphone path in order to keep the active speech level
at a certain reference power level.
• Digital receiving AGC - When this feature is enabled, an Automatic Gain Control (AGC) is
implemented in the receiver path in order to keep the active speech level at a certain
reference power level.
• Receiving and attenuation.
To choose the setting, put the pointer into the field value, click on the arrow, and drag the pointer to
the desired value.
22.3.5 Voice Filters
The parameters are responsible for transmission and reception Noise Suppression, Echo Control,
and Echo Suppression Threshold to further enhance the audio quality of the terminal.
22.3.6 Ambience Listening
These parameters set the volume heard in the respective accessory during the Ambience Listening.
22.3.7 Alert Tones Volume
An alert is a tone the phone sounds to alert the user of various events. This page allows changing
codeplug values of the alert tone volumes for the various alert tone modes listed in the window.
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