New Rock Technologies MX8A Series - Page 44

User Manual HX4E/MX8A Series Voice Gateway
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Figure 2-23 Trunk Characteristics Configuration Interface
Table 2-16 Trunk Characteristics Configuration Parameter
Name
Description
Gain to IP
This parameter is used to adjust the volume of the voice sent from the PSTN to the
device.
When the call volume of the extension set is extremely low, you can increase the
parameter value. When the call volume of the extension set is excessively high, you
can decrease the parameter value.
Range: -3.0 - +9.0 dB. It is set to 0 dB by default.
Gain to PSTN
This parameter is used to adjust the volume of the voice sent from the device to the
PSTN.
When the sound volume is extremely low, you can increase the parameter value.
When the call volume of the extension set is excessively high, you can decrease the
parameter value.
Range: -6.0 - +3.0 dB.
Impedance
Set the parameter of FXO impedance, with the default of 600 ohm. The optional
settings are below:
 Complex (default value)
 600 (ohm)
 900 (ohm)