Draytek Vigor IPPBX 2820 Series User Manual page 97

Available settings are explained as follows:
Item
Tone Settings
Volume Gain
DTMF
VigorIPPBX 2820 Series User's Guide
Description
Region- Select the proper region which you are located.
The common settings of Dial tone, Ringing tone, Busy
tone and Congestion tone will be shown automatically on
the page. If you cannot find out a suitable one, please
choose User Defined and fill out the corresponding values
for dial tone, ringing tone, busy tone, and congestion tone
by yourself for VoIP phone.
Also, you can specify each field for your necessity. It is
recommended for you to use the default settings for VoIP
communication.
Mic Gain (1-10)/Speaker Gain (1-10) - Adjust the volume
of microphone and speaker by entering number from 1- 10.
The larger of the number, the louder the volume is.
DTMF mode – There are four selections provided here:
InBand: Choose this one then the Vigor will send the
DTMF tone as audio directly when you press the keypad on
the phone.
OutBand: Choose this one then the Vigor will capture the
keypad number you pressed and transform it to digital form
then send to the other side; the receiver will generate the
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