Draytek Vigor2760 User Manual page 214

Single Codec
Packet Size
Voice Active Detector
Default SIP Account
Play dial tone only
when account registered
Advanced Settings
Call ID Type
Speaker Gain(1-10)
Mic Gain (1-10)
Phone Gain (1-10)
PCM Gain (1-10)
DTMF Mode
The codec used for each call will be negotiated with the
peer party before each session, and so may not be your
default choice. The default codec is G.729A/B; it occupies
little bandwidth while maintaining good voice quality.
If your upstream speed is only 64Kbps, do not use G.711
codec. It is better for you to have at least 256Kbps
upstream if you would like to use G.711.
If the box is checked, only the selected Codec will be
applied.
The amount of data contained in a single packet. The
default value is 20 ms, which means the data packet will
contain 20 ms voice information.
This function can detect if the voice on both sides is active
or not. If not, the router will do something to save the
bandwidth for other using. Check the box to invoke this
function.
You can set SIP accounts (up to six groups) on SIP
Account page. Use the drop down list to choose one of the
profile names for the accounts as the default one for this
phone setting.
Check this box to invoke the function.
Choose a proper one for such profile.
Adjust the volume of speaker by entering number from 1-
10. The larger of the number, the louder the volume is.
Adjust the volume of microphone by entering number from
1- 10. The larger of the number, the louder the volume is.
Adjust the volume of the phone set by entering number
from 1- 10. The larger of the number, the louder the
volume is.
Adjust the volume of the FXO PCM signal by entering
number from 1-10. The larger of the number, the louder the
volume is.
There are four DTMF modes for you to choose.

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
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Vigor2760 Series User's Guide